WO2015165033A1

WO2015165033A1 - Processing method for supporting resource sharing by services with mixed granularities, and nodes

Info

Publication number: WO2015165033A1
Application number: PCT/CN2014/076463
Authority: WO
Inventors: 郑好棉
Original assignee: 华为技术有限公司
Priority date: 2014-04-29
Filing date: 2014-04-29
Publication date: 2015-11-05
Also published as: CN104067539A; CN104067539B

Abstract

Embodiments of the present invention relate to a processing method for supporting resource sharing by services with mixed granularities, and nodes. The method comprises: when a high-order service working path protected by a high-order service protection path has a fault, an intermediate node located in the high-order service protection path receives a first message sent, by using a high-order service overhead, by an upstream neighboring node that is also located in the high-order service protection path; the intermediate node determines whether the high-order service protection path is an available path according to the first message; when the high-order service protection path is an available path, the intermediate node sends, by using a low-order service overhead, the first message to a downstream neighboring node that is also located in the high-order service protection path; the intermediate node adapts a receiving port with the downstream neighboring node to a high-order granularity; and when the intermediate node receives a second message sent, by using the high-order service overhead, by the downstream neighboring node according to the first message, the intermediate node establishes a cross-connection.

Description

Description of the book Supporting mixed granularity business shared resource processing methods and nodes

The present invention relates to the field of communications technologies, and in particular, to a processing method and a node for supporting a hybrid granularity service shared resource. Background technique

Currently, in order to improve the bandwidth resource utilization of optical networks, shared mesh protection is usually adopted.

(Shared Mesh Protection, SMP for short) technology provides delivery services for users' businesses. The SMP technology allows multiple service paths with service protection paths separated by paths (i.e., multiple service work paths are not required to have the same start and end nodes, as shown in Figure 1 below).

In the prior art, the scenario for supporting the shared resource of the hybrid granularity service is as follows: In FIG. 1, the first service working path W1 is between the node A and the node E, and the first service working path supports the low-order service optical channel data unit. (Optical channel data unit, ODU for short) ODUj, the corresponding first service protection path is node A-node B-node C-node D-node E, and the first service protection path supports low-order services, where A to the node B and the node D to the node E segment path support the low-order service ODUj, the node B-node C-node D segment path supports the high-order service ODUk: the node F to the node G is the second service working path W2, The second service working path supports the high-order service ODUk, and the corresponding second service protection path is the node F-node B-node C-node D-node G, wherein the node F-node B-node C-node D-node The G segment path supports the high-order service ODUk (j, the value of k can be 0, 1, 2, 3, 4, representing different 0DU granularity, the default in the prior art: j < k).

When the working path of the service is faulty, each node needs to switch the service carried on the working path to the protection path. When the working path returns to normal, the service carried on the protection path is rolled back to the working path. However, in the prior art, at the same time point, the same node shared by the protection path of the hybrid granularity service can only be adapted to a single granularity service, that is, in the scenario of FIG. 1, the node B, the node C, and the node D only A message that can support a certain granularity (ODUk or ODUj) overhead is transmitted, and cannot support multiple granularity overhead messages at the same time, thereby reducing the working efficiency of the intermediate node. Summary of the invention

The embodiment of the present invention provides a processing method and a node for supporting a hybrid granularity service shared resource, and solves the problem that the intermediate node shared by the protection path shared by the hybrid granularity service in the prior art cannot simultaneously support multiple granularity overhead messages, and reduces the middle. The problem of node productivity.

In a first aspect, an embodiment of the present invention provides a method for supporting a hybrid granularity service shared resource, where the method includes:

When the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the upstream neighboring node that is in the high-order service protection path. The first message sent by the high-order service overhead;

Determining, according to the first message, whether the high-order service protection path is an available path;

When the high-order service protection path is an available path, the intermediate node sends the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead; And the receiving port of the downstream neighboring node is adapted to a high-order granularity; when the intermediate node receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead, The intermediate node establishes an intersection.

In a first possible implementation manner, before the sending, by the intermediate node, the first message to the downstream neighboring node in the high-order service protection path, the intermediate node further includes: when the high-order When the service protection path is an available path, the intermediate node sends the second message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node establishes an intersection according to the second message. In a second possible implementation manner, the method further includes:

When the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node adapts the receiving port of the downstream neighboring node to a low-order granularity, and the intermediate node passes The low-order service overhead sends the first message to the downstream neighboring node.

In a second aspect, an embodiment of the present invention provides a method for supporting a shared resource of a hybrid granularity service, where the method includes:

When the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the upstream neighboring node that is in the high-order service protection path. The first message sent by the low-order service overhead;

When the high-order service protection path is an available path, the intermediate node sends the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead; Adapting the receiving ports of the upstream neighboring node and the downstream neighboring node to a high-order granularity;

When the intermediate node receives the second message sent by the downstream neighboring node according to the first message by the high-order service overhead, the intermediate node establishes an intersection.

In a first possible implementation manner, after the intermediate node respectively adapts the receiving ports of the upstream neighboring node and the downstream neighboring node to a high-order granularity, the method further includes:

And the intermediate node sends the second message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node establishes an intersection according to the second message.

In a second possible implementation manner, the method further includes:

In a third aspect, an embodiment of the present invention provides a support for hybrid granularity service sharing resources. In another method, the method includes:

When the high-order service protection path is an available path, the intermediate node sends the first message to a downstream neighboring node that is in the high-order service protection path by using a high-order service overhead; And the receiving port of the upstream neighboring node is adapted to a high-order granularity; when the intermediate node receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead, The intermediate node establishes an intersection.

In a first possible implementation manner, after the intermediate node adapts the receiving port of the upstream neighboring node to a high-order granularity, the method further includes:

In a second possible implementation manner, the method further includes:

And when the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node sends the first message to the downstream neighboring node by using the high-order service overhead.

In a fourth aspect, an embodiment of the present invention provides a protection method for supporting a hybrid granular service shared resource, where the method includes:

When the high-order service working path protected by the high-order service protection path is normal, the intermediate node receives the first message sent by the upstream neighboring node in the high-order service protection path by using a low-order service overhead;

The intermediate node sends the first message to a downstream neighboring node in the high-order service protection path by using the low-order service overhead, where the first message is used to be in the high-order service protection path. Each node maintains the high-order service protection path. In a first possible implementation manner, before the receiving, by the intermediate node, the first message sent by the upstream neighboring node in the high-order service protection path by using the low-order service overhead, the method further includes:

And when the high-order service working path has recovered from a fault to a normal state, the intermediate node receives a second message that is sent by the upstream neighboring node of the high-order service protection path by using a high-order service overhead;

Transmitting, by the intermediate node, the second message to the downstream neighboring node in the high-order service protection path by using the high-order service overhead;

Receiving, by the intermediate node, a third message sent by the downstream neighboring node by using the high-order service overhead;

According to the third message, the intermediate node adapts the granularity of the high-order service protection path with the downstream neighboring node to a low-order service overhead, and tears down the established with the downstream neighboring node. Cross

Transmitting, by the intermediate node, the third message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node and the intermediate node according to the third message The granularity of the high-order service protection path is adapted to low-order service overhead, and the intersection established with the intermediate node is removed.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the first message includes the message type, an identifier of the high-order service working path, The granularity of the high-order service working path and the time slot required for protection switching after the high-order service working path fails.

In a fifth aspect, an embodiment of the present invention provides a switching node that supports a hybrid granularity service shared resource, where the switching node includes:

a receiving unit, configured to receive, when the high-order service working path protected by the high-order service protection path is faulty, the first message sent by the upstream neighboring node in the high-order service protection path by using a high-order service overhead ;

a determining unit, configured to determine, according to the first message, whether the high-order service protection path is Available path

a sending unit, configured to: when the high-order service protection path is an available path, send the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead; When the high-order service protection path is an available path, the receiving port of the downstream neighboring node is adapted to a high-order granularity;

And an establishing unit, configured to establish an intersection when the receiving unit receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead.

In a first possible implementation manner, the sending unit is further configured to: when the high-order service protection path is an available path, use a low-order service overhead to be in a downstream phase in the high-order service protection path. Before the neighboring node sends the first message, sending the second message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node establishes an intersection according to the second message.

In a second possible implementation manner, the adapting unit is further configured to: when the receiving unit does not receive the second message sent by the downstream neighboring node, The receiving port is adapted to a low-order granularity;

The sending unit is further configured to: when the receiving unit does not receive the second message sent by the downstream neighboring node, send the first to the downstream neighboring node by using the low-order service overhead Message.

In a sixth aspect, an embodiment of the present invention provides a switching node that supports a hybrid granularity service shared resource, where the switching node includes:

a receiving unit, configured to receive, when the high-order service working path protected by the high-order service protection path is faulty, the first message sent by the upstream neighboring node in the high-order service protection path by using a low-order service overhead ;

a determining unit, configured to determine, according to the first message, whether the high-order service protection path is an available path;

a sending unit, configured to: when the high-order service protection path is an available path, pass the low-order service Transmitting the first message to the downstream neighboring node in the high-order service protection path; the adapting unit, configured to: when the high-order service protection path is an available path, respectively The receiving ports of the neighboring node and the downstream neighboring node are adapted to a high-order granularity;

In a first possible implementation manner, the sending unit is further configured to: after the adapting unit respectively adapts a receiving port of the upstream neighboring node and the downstream neighboring node to a high-order granularity, And transmitting, by the high-order service overhead, the second message to the upstream neighboring node, so that the upstream neighboring node establishes an intersection according to the second message.

In a seventh aspect, the embodiment of the present invention provides a switching node that supports a mixed-granular service shared resource, where the switching node includes:

a sending unit, configured to: when the high-order service protection path is an available path, send the first message to a downstream neighboring node that is in the high-order service protection path by using a high-order service overhead; When the high-order service protection path is an available path, the receiving port of the upstream neighboring node is adapted to a high-order granularity; And an establishing unit, configured to establish an intersection when the receiving unit receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead.

In a first possible implementation manner, the sending unit is further configured to: after the adapting unit adapts the receiving port of the upstream neighboring node to a high-order granularity, by using the high-order service overhead The upstream neighbor node sends the second message, so that the upstream neighboring node establishes an intersection according to the second message.

In a second possible implementation manner, the sending unit is further configured to: when the receiving unit does not receive the second message sent by the downstream neighboring node, by using the high-order service overhead The downstream neighbor node sends the first message.

In an eighth aspect, an embodiment of the present invention provides a protection node that supports a hybrid granular service shared resource, where the protection node includes:

a receiving unit, configured to: when the high-order service working path protected by the high-order service protection path is normal, receive a first message sent by an upstream neighboring node in the high-order service protection path by using a low-order service overhead;

a sending unit, configured to send, by using the low-order service overhead, the first message to a downstream neighboring node in the high-order service protection path, where the first message is used to enable the high-order service protection path Each node in the node maintains the high-order service protection path.

In a first possible implementation manner, before the receiving unit receives the first message sent by the upstream neighboring node in the high-order service protection path by using the low-order service overhead, the protection node further includes:

The receiving unit is further configured to: when the high-order service working path has recovered from a fault to a normal state, receive a second message sent by the upstream neighboring node in the high-order service protection path by using a high-order service overhead. ;

The sending unit is further configured to: send, by the high-order service overhead, the second message to the downstream neighboring node that is in the high-order service protection path;

The receiving unit is further configured to: receive, by the downstream neighboring node, by using the high-order service overhead The third message sent;

And an adaptation removal unit, configured to adapt, according to the third message, a granularity of the high-order service protection path between the downstream neighboring node to a low-order service overhead, and remove the adjacent to the downstream The intersection established by the node;

The sending unit is further configured to send the third message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node and the protection node according to the third message The granularity of the high-order service protection path between the two is adapted to a low-order service overhead, and the intersection established with the protection node is removed.

With reference to the eighth aspect, or the first possible implementation manner of the eighth aspect, in a second possible implementation manner, the first message received by the receiving unit includes the message type, the high-order service works The identifier of the path, the granularity of the high-order service working path, and the time slot required for protection switching after the high-order service working path fails.

In a ninth aspect, an embodiment of the present invention provides a switching node that supports a hybrid granularity service shared resource, where the switching node includes:

Processor

Memory

An application physically stored in the memory, the application including instructions operable to cause the processor to perform the following process:

When the high-order service working path protected by the high-order service protection path is faulty, receiving, by the upstream neighboring node in the high-order service protection path, the first message sent by the high-order service overhead;

Determining, according to the first message, whether the high-order service protection path is an available path; when the high-order service protection path is an available path, the low-order service overhead is in the same high-order service protection path Sending, by the downstream neighbor node, the first message;

Adapting the receiving port of the downstream neighboring node to a high-order service overhead;

Receiving, by the downstream neighboring node, the high-order service overhead according to the first message When the second message is sent, a cross is established.

In a first possible implementation, the application further includes instructions operable to cause the processor to perform the following process:

When the high-order service protection path is an available path, the high-order service overhead is used before the first message is sent to the downstream neighboring node in the high-order service protection path by the low-order service overhead. The upstream neighbor node sends the second message, so that the upstream neighboring node establishes an intersection according to the second message.

In a second possible implementation, the application further includes instructions operable to cause the processor to perform the following process:

When the second message sent by the downstream neighboring node is not received, the receiving port of the downstream neighboring node is adapted to a low-order service overhead, and the downstream phase is used to pass the low-order service overhead The neighbor node sends the first message.

In a tenth aspect, the embodiment of the present invention provides a switching node that supports a hybrid service of a granularity service, where the switching node includes:

Processor

Memory

When the high-order service working path protected by the high-order service protection path is faulty, receiving, by the upstream neighboring node in the high-order service protection path, the first message sent by the low-order service overhead;

Adapting the receiving ports of the upstream neighboring node and the downstream neighboring node to high-order service overhead respectively; And when the second neighboring node receives the second message sent by the high-order service overhead according to the first message, establishing an intersection.

After the receiving ports of the upstream neighboring node and the downstream neighboring node are respectively adapted to a high-order granularity, the second message is sent to the upstream neighboring node by the high-order traffic overhead, so that The upstream neighboring node establishes an intersection according to the second message.

In an eleventh aspect, an embodiment of the present invention provides a switching node that supports a mixed-granular service shared resource, where the switching node includes:

Processor

Memory

Determining, according to the first message, whether the high-order service protection path is an available path; when the high-order service protection path is an available path, the high-order service overhead is in the same high-order service protection path Sending, by the downstream neighbor node, the first message;

Adapting the receiving port of the upstream neighboring node to a high-order service overhead;

After the receiving port of the upstream neighboring node is adapted to a high-order granularity, the second message is sent to the upstream neighboring node by the high-order granularity overhead, so that the upstream neighboring node is configured according to the The second message is established to cross.

And when the second message sent by the downstream neighboring node is not received, sending the first message to the downstream neighboring node by using the high-order service overhead.

In a twelfth aspect, an embodiment of the present invention provides a protection node that supports a hybrid granular service shared resource, where the protection node includes:

Processor

Memory

When the high-order service working path protected by the high-order service protection path is normal, receiving, by the upstream neighboring node in the high-order service protection path, the first message sent by the low-order service overhead;

Sending, by the low-order service overhead, the first message to a downstream neighboring node in the high-order service protection path, where the first message is used to make each node pair in the high-order service protection path The high-order service protection path is maintained.

In a first possible implementation manner, before receiving the first message sent by the upstream neighboring node in the high-order service protection path by using a low-order service overhead, when the high-order service working path has recovered from the fault to Normally, receiving, by the upstream neighboring node in the high-order service protection path, a second message sent by a high-order service overhead; Transmitting, by the high-order service overhead, the second message to the downstream neighboring node in the high-order service protection path;

Receiving a third message that is sent by the downstream neighboring node by using the high-order service overhead; and adapting, according to the third message, a service cost of the high-order service protection path between the downstream neighboring node a low-order service overhead, and tearing off an intersection established with the downstream neighboring node; sending the third message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node is configured according to the The third message is to adapt the service cost of the high-order service protection path with the protection node to a low-order service cost, and tear off the intersection established with the protection node.

With reference to the twelfth aspect or the first possible implementation manner of the twelfth aspect, in a second possible implementation, the first message includes the message type, an identifier of the high-order service working path, The service overhead of the high-order service working path and the time slot required for protection switching after the high-order service working path fails.

Therefore, by applying the processing method and the node for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the intermediate node receives the first message sent by the upstream neighboring node through the high-order service overhead, when When the high-order service protection path is available, the first message is sent to the downstream neighboring node through the low-order service overhead, and the receiving port of the downstream neighboring node is adapted to the high-order service overhead, and when the downstream neighboring node is received through the high When the second message is sent by the level service overhead, a cross is established. In the prior art, the intermediate node shared by the protection path of the hybrid granularity service cannot simultaneously support the message with multiple granularity overheads, and reduces the working efficiency of the intermediate node. The processing method and node for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention overcome the limitations of the prior art solution and improve the working efficiency of the intermediate node. DRAWINGS

FIG. 1 is an ODU SMP application scenario supporting different granularity sharing in the prior art;

2 is a flow of a protection method for supporting a hybrid granularity service shared resource according to Embodiment 1 of the present invention; Cheng Tu

3 is a protection signaling diagram of a hybrid granularity service shared resource according to an embodiment of the present invention; FIG. 4 is a back-off signaling diagram of a hybrid granularity service shared resource according to an embodiment of the present invention; A flow chart of a switching method for supporting a mixed-granular service shared resource provided by the second method;

FIG. 6 is a schematic diagram of a switching signaling manner of supporting a hybrid granularity service shared resource according to an embodiment of the present invention; FIG. 6 is a flow chart of a method for switching a hybrid granularity service shared resource according to Embodiment 3 of the present invention;

8 is a flow chart of a method for switching a hybrid granularity service shared resource according to Embodiment 4 of the present invention;

9 is a schematic diagram of a structure of a protection node supporting a hybrid granularity service shared resource according to Embodiment 5 of the present invention;

FIG. 10 is a schematic diagram showing a structure of an switching node supporting a hybrid granularity service shared resource according to Embodiment 6 of the present invention;

FIG. 1 is a schematic structural diagram of a switching node supporting a hybrid granularity service shared resource according to Embodiment 7 of the present invention;

FIG. 12 is a schematic diagram showing a structure of an switching node supporting a hybrid granularity service shared resource according to Embodiment 8 of the present invention; FIG.

FIG. 13 is a schematic structural diagram of a protection node hardware supporting a hybrid granularity service shared resource according to Embodiment 9 of the present invention;

14 is a schematic structural diagram of a switching node hardware supporting a hybrid granularity service shared resource according to Embodiment 10 of the present invention;

15 is a schematic structural diagram of a hardware structure of a switching node supporting a hybrid granularity service shared resource according to Embodiment 11 of the present invention;

FIG. 16 is a schematic structural diagram of a hardware structure of a switching node supporting a hybrid granularity service shared resource according to Embodiment 12 of the present invention. detailed description

The following takes the switching process of the hybrid granularity service shared resource in the prior art as an example. In the prior art, at the same time point, the same node shared by the protection path of the hybrid granular service can only be adapted to a single granularity service, that is, In the scenario of Figure 1, Node B, Node C, and Node D can only support messages with a certain granularity (ODUk or ODUj) overhead, but cannot simultaneously support multiple granularity overhead messages for transmission, and reduce intermediate nodes. The problem of work efficiency.

The specific process is as follows: After detecting the fault of the first working path, the node A completes the bridging (that is, the service carried on the first working path is sent to the first protection path), and sends a signal failure to the node B through the low-order service overhead (S I gna l Fa i lure , abbreviated as: SF ) message, after receiving the message, the node B first sends an adaptation message to the node C through the high-order service overhead, and the node C replies to the node B according to the adaptation message and simultaneously with the node B. Establish a connection point for low-level service overhead and complete the adaptation. After receiving the acknowledgment message, the node B also establishes a connection point with the lower-order service overhead with the node C, and completes the adaptation. Then, the node B sends a signal SF message to the node C through the low-order service overhead. Similarly, the node ( Node D is also similar to Node B. Thus, the SF message can be transmitted from Node A to Node E. Node E bridges and selects according to the SF message and returns a reverse request hop by hop (Rever se Reques t, abbreviated as RR) The message, each intermediate node establishes an intersection, and the node A completes the selection according to the RR message (that is, receives the service from the first protection path).

After detecting the second working path fault, the node F completes the bridging (that is, sends the service carried on the second working path to the second protection path), and sends the SF message to the node B through the high-order service overhead (not shown in FIG. 1). After receiving the SF message, the node B sends the SF message to the node C through the high-order service overhead, and the node C sends the SF message to the node D through the high-order service overhead, and the node D sends the SF message to the node G through the high-order service overhead, the node G bridges and selects according to the SF message, and returns the RR message hop by hop, each intermediate node establishes an intersection, and the node F completes the selection according to the RR message (that is, receives the service from the second protection path).

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the drawings, and the embodiments are described as a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

In order to facilitate the understanding of the embodiments of the present invention, the embodiments of the present invention are not to be construed as limited.

Embodiment 1

The following is a detailed description of a method for protecting a hybrid granularity service shared resource according to the first embodiment of the present invention, and FIG. 2 is a flowchart of a method for protecting a hybrid granularity service shared resource according to the first embodiment of the present invention. In the embodiment, the implementation entity is an intermediate node in the service protection path, and the service protection path is specifically a high-order service protection path or a low-order service protection path, and the high-order service protection path and the low-order service protection path share multiple intermediate nodes. Each intermediate node supports the processing of multiple granular data. In the optical transport network (0TN), the multiple granularity data can be ODU0, 0DU1, 0DU2, etc. In the SDH (Synchronous Digital Hierarchy) network, multiple granular data can be VC12 (Virtual Container) 12, virtual container 12), VC3, VC4, etc.; in the MPLS (Mult i- Protocol Label Switching) network, the multiple granularity data may be PW (Pseudo Wire), LSP (Label Switched Path, Label switching path) and so on.

The protection method for the hybrid granularity service shared resource provided by the embodiment of the present invention is applied to the optical transport network, and the high-order service working path and the low-order service working path are normal, or the high-order service working path is normal, but the low-order service working path is faulty. in the case of. As shown in Figure 1, this embodiment specifically includes the following steps:

Step 210: When the high-order service working path protected by the high-order service protection path is normal, the intermediate node receives the first one sent by the upstream neighboring node in the high-order service protection path by using a low-order service overhead. Message.

Specifically, when the high-order service working path protected by the high-order service protection path is normal, the middle The node receives the first message sent by the upstream neighboring node in the high-order service protection path by the low-order service overhead.

The first message is specifically a 0AM (Operation Administration and Maintenance) message. The protection method of the hybrid granularity service shared resource provided by the embodiment of the present invention is applied to the optical transport network, and the first message may be specifically an Automatic Protection Switched (APS) message. The APS message includes multiple message types, for example, a non-request message (No Request, abbreviated as NR), a back-off message (Revert, referred to as RT), a reverse request message (Reverse Request, abbreviated as RR), and the like.

The following takes the first message as an APS message as an example for description.

Further, in the embodiment of the present invention, the low-order service is 0DU1; and the high-order service is 0DU2. As shown

3, FIG. 3 is a protection signaling diagram supporting a mixed-granular service shared resource. In FIG. 3, a node-to-node E is a low-order service working path, and the low-order service working path supports a low-order service overhead. The granularity is 0DU1, and the corresponding low-order service protection path is node A-node B-node C-node D-node E, where node A to node B and node D to node E segment path support low-order service overhead, granularity For the 0DU1, the node B-node C-node D-segment path supports high-order service overhead, and the granularity is 0DU2: the high-order service working path is supported between the node F and the node G. The high-order service working path supports high-order service overhead and granularity. The corresponding high-order service protection path is 0DU2, and the node F-node B-node C-node D-node G, wherein the node F-node B-node C-node D-node G segment path supports high-order service overhead , the granularity is 0DU2.

It can be understood that the granularity of the low-order service is smaller than the granularity of the high-order service.

Node A and node E are end nodes of the low-order service protection path. Similarly, node F and node G are end nodes of the high-order service protection path; node B, node (and node D are intermediate nodes, and both support A plurality of granularities; node A and node F are upstream neighbor nodes of the node B on the low-order service protection path and the high-order service protection path, respectively, and node C is the node B on the low-order service protection path and the high-order service protection path. The downstream adjacent nodes, the upstream and downstream nodes of other nodes are not described again. The upstream is the direction from the sink node to the source node on the path, and the downstream is the direction from the source node to the sink node on the path. Further, in the embodiment of the present invention, the high-order service working path and the low-order service working path are both normal. In the first example, when the intermediate node is the node B, the node B receives the node A at the same time. And the first message sent by the node F through the low-order service overhead, that is, the Node B receives the first message sent by the node A, and receives the first message sent by the node F.

In the second example, when the intermediate node is node C, node C receives the two first messages sent by node B through the low-order service overhead.

In the third example, when the intermediate node is node D, node D receives the two first messages sent by node C through the low-order traffic overhead.

When the first message received by the Node B is sent by the node A, the first message includes a message type, an identifier of a low-order service working path, a granularity of a low-order service working path, and protection after a low-order service working path fails. Switch the required time slot.

It should be noted that the first message includes an overhead part and a data part, where the overhead part includes a message type, an identifier of a low-order service working path, a granularity of a low-order service working path, and a protection switching after a low-order service working path fails. The required time slot. The message type is specifically an unsolicited message type. In other words, the first message is specifically an NR message; the identifier of the low-order service working path is W1; and the service granularity of the low-order service working path is 0DU1; The time slots required for protection switching after a low-order service working path failure are TS#1 ~ TS#2.

When the first message received by the Node B is sent by the node F, the first message includes a message type, an identifier of a high-order service working path, a granularity of a high-order service working path, and protection after a high-order service working path fails. Switch the required time slot.

It should be noted that the first message includes an overhead part and a data part, where the overhead part includes a message type, an identifier of a high-order service working path, a granularity of a high-order service working path, and a protection switching after a high-order service working path fails. The required time slot. The message type is specifically an unsolicited message type. In other words, the first message is specifically an NR message; the identifier of the high-order service working path is W2; and the service granularity of the high-order service working path is 0DU2; The time slots required for protection switching after a high-order service working path failure are TS#1 ~ TS#8. Step 220: The intermediate node sends the first message to a downstream neighboring node in the high-order service protection path by using the low-order service overhead, where the first message is used to enable the high-order service. Each node in the protection path maintains the high-order service protection path.

Specifically, after the intermediate node receives the first message sent by the upstream neighboring node through the low-order service overhead, the intermediate node sends the first message to the downstream neighboring node in the high-order service protection path by using the low-order service overhead. The first message is used to maintain the high-order service protection path by each node in the high-order service protection path.

Further, as in the foregoing example, when the intermediate node is the Node B, the Node B sends two first messages to the Node C through the low-order service overhead.

When the intermediate node is node C, node C sends two first messages to node D through low-order traffic overhead.

When the intermediate node is node D, node D sends the first message to node G and node E respectively through low-order service overhead.

Each node in the service protection path receives the first message belonging to the respective service protection path, and maintains the path according to the first message, and the high-order and low-order service protection paths send the first message through the low-order service overhead. In the prior art, in the case that the working path is normal, the intermediate node cannot simultaneously support the message with multiple granularity overheads on the protection path, and the problem that the protection path is faulty cannot be sensed in time.

It should be noted that, in the foregoing example, the first message received by the intermediate node is initiated and maintained by the source end node in the service protection path. In an actual application, the intermediate node may also receive the first message sent by the sink node. Maintenance is initiated by the sink node.

In the embodiment of the present invention, when the maintenance is initiated by the sink node, the maintenance process performed by the intermediate node is the same as the foregoing, and is not repeated here. The service carried by the working path and the protection path may be a one-way service or a two-way service.

When the high-order service working path is normal, but the low-order service working path is faulty, the process of maintaining the high-order service protection path by the intermediate node is the same as the foregoing, and is not repeated here. Optionally, before the step 210 of the embodiment of the present invention, the method further includes the step of the intermediate node rolling back the service carried by the service protection path to the service working path when the service working path has been restored from the fault path to the normal path. Through this step, the intermediate node maintains the service cost of the low-order service protection path as a low-order service overhead, and adapts the service cost of the high-order service protection path to the low-order service cost, so that the intermediate node performs the high-order service protection path. During maintenance, the first message is sent using the low-order service overhead, and the low-order service protection path still uses the low-order service overhead to send the first message. Specific steps are as follows:

According to the third message, the intermediate node adapts the granularity overhead of the high-order service protection path with the downstream neighboring node to a low-order service overhead, and tears down and establishes with the downstream neighboring node. Cross

Specifically, when the high-order service working path has been restored from the fault path to the normal path, the intermediate node receives the second message sent by the upstream neighboring node in the high-order service protection path through the high-order service overhead; the intermediate node passes the high-order service. The overhead sends a second message to the downstream neighboring node in the high-order service protection path, where the second message is used to determine that each intermediate node determines that the high-order service working path is a normal path; and the intermediate node receives the downstream neighboring node through the high-order service. The third message sent by the overhead; According to the third message, the intermediate node adapts the granularity of the high-order service protection path with the downstream neighboring node to the low-order service overhead, and tears the intersection established with the downstream neighboring node; the intermediate node passes the high-order service overhead upward The neighboring node sends a third message, so that the upstream neighboring node adapts the granularity of the high-order service protection path with the intermediate node to the low-order service overhead according to the third message, and tears the intersection established with the intermediate node.

Further, as shown in FIG. 4, FIG. 4 is a back-off signaling diagram supporting mixed-granular service shared resources. In FIG. 4, the granularity of each node and path is the same as that in the figure shown in FIG. 3, and will not be repeated here.

The intermediate node keeps the granularity of the low-order service protection path as the low-order service cost, and the service carried in the low-order service protection path is rolled back to the low-order service working path as the prior art, and will not be repeated again.

The following takes the case where the service carried on the high-order service protection path is rolled back to the high-order service working path as an example.

In an example, the node F detects the high-order service working path fault elimination, and when returning to the normal path, the node F sends the second message to the node B through the high-order service overhead; the node B also sends the high-order service overhead to the node C. The second message, and so on, until the node D sends the second message to the node G through the high-order service overhead, the node G determines that the high-order service working path is the normal path according to the second message, and the node G passes the high-order service overhead to the node D. Sending a third message, the node D adapts the granularity of the high-order service protection path between the node G and the node G to the low-order service overhead according to the third message, and tears the intersection established with the node G, and the node D passes the high-order service overhead. Node C sends a third message. Similarly, node C adapts the granularity of the high-order service protection path with node D to low-order service overhead, and tears the intersection established with node D. Similarly, node B, node F adapts the granularity of the high-order service protection path between the downstream neighboring nodes to the low-order service overhead, and removes the intersection established with the downstream adjacent nodes, and then the intermediate section The granularity of the low-order service protection path is low-level service overhead, and the granularity of the high-order service protection path is rolled back to the low-order service cost, so that the intermediate node uses the low-order service overhead when maintaining the high-order service protection path. The automatic protection switching message is sent, and the low-order service protection path still uses the low-order service overhead to send an automatic protection switching message. It should be noted that the second and third messages include an overhead part and a data part, where the overhead part includes a message type and an identifier of a high-order service working path. The message type is specifically a back-off message type (Rever t, abbreviated as RT) or a reverse request message type (Rever se Reque st, abbreviated as RR). In other words, the second message is specifically an RT message, and the third The message is specifically an RR message; the identifier of the high-order service working path is W2.

Therefore, by applying the protection method of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is normal, the intermediate node receives the upstream neighboring node in the high-order service protection path and sends the low-order service overhead. The first message is sent to the downstream neighboring node in the high-order service protection path, so that each intermediate node in the high-order service protection path maintains the high-order service protection path. In the prior art, in the case that the working path is normal, the intermediate node cannot simultaneously support the message with multiple granularity overheads on the protection path, and the problem that the protection path is faulty cannot be sensed in time. The method for protecting the shared resource of the mixed granularity service provided by the embodiment of the present invention overcomes the limitations of the prior art solution and improves the working efficiency of the intermediate node.

Embodiment 2

The following is a detailed description of a method for supporting a hybrid granularity service shared resource according to the second embodiment of the present invention, and FIG. 5 is a flowchart of a method for switching a hybrid granularity service shared resource according to Embodiment 2 of the present invention. In the embodiment, the implementation entity is an intermediate node in the service protection path, and the service protection path is specifically a high-order service protection path or a low-order service protection path, and the high-order service protection path and the low-order service protection path share multiple intermediate nodes. Each intermediate node supports the processing of multiple granular services.

The switching method for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention is applied to the case where the high-order service working path in the optical network system is a fault path. As shown in Figure 5, this embodiment specifically includes the following steps:

Step 51: When the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the same high-order service protection. The first message sent by the upstream neighboring node in the path through the high-order service overhead.

Specifically, when the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the upstream neighboring node that is in the high-order service protection path and sends the high-order service overhead through the high-order service overhead. The first news.

The first message includes an overhead part and a data part, where the overhead part includes a message type, an identifier of a high-order service working path, a granularity of a high-order service working path, and a time required for protection switching after a high-order service working path fails. Gap. The message type is specifically a signal invalidation message type. In other words, the first message is specifically an SF message; the identifier of the high-order service working path is W2; and the service granularity of the high-order service working path is 0DU2; The time slots required for protection switching after a high-order service working path failure are TS#1 ~ TS#8.

It can be understood that the identifier of the low-order service working path is W1 and the service granularity of the low-order business working path is 0DU1.

Further, as shown in FIG. 6, FIG. 6 is a schematic diagram of a switching signaling supporting a hybrid granularity service shared resource according to an embodiment of the present invention. In Fig. 6, the granularity of each node and path is the same as that in the figure shown in Fig. 3, and will not be repeated here.

In an example, the intermediate node is specifically a node B, the upstream neighboring node of the node B is the node F, and the downstream neighboring node is the node (the node F detects the service working path fault between the node and the node G, then The node F initiates a switching process, and sends an SF message to the Node B through a high-order granularity overhead. The Node B receives the SF message.

Step 520: The intermediate node determines, according to the first message, whether the high-order service protection path is an available path.

Specifically, according to the first message, the intermediate node determines whether the high-order service protection path is an available path.

Further, as in the foregoing example, the Node B determines, according to the identifier included in the SF message, a high-order service protection path (Node F-Node B-Node C-Node D-Node G) corresponding to the high-order service working path. The Node B determines whether the high-order service protection path is an available path. The available path is specifically Whether the high-order service protection path is a normal path, or whether the bandwidth of the high-order service protection path is not occupied by other services.

Step 530: When the high-order service protection path is an available path, the intermediate node sends the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead.

Specifically, when the high-order service protection path is an available path, the intermediate node sends the first message to the downstream neighboring node that is in the high-order service protection path by the low-order service.

Further, as in the foregoing example, after the node B determines that the high-order service protection path is an available path, the node B sends the SF message to the node C through the low-order service overhead.

Step 540: The intermediate node adapts the receiving port of the downstream neighboring node to a high-order granularity.

Specifically, after sending the first message to the downstream neighboring node, the intermediate node adapts the receiving port of the downstream neighboring node to a high-order granularity, so as to send and receive messages through the high-order service overhead with the downstream neighboring node.

Further, as in the foregoing example, after transmitting the SF message to the node C, the node B adapts the receiving port of the node C to a high-order granularity.

Step 550: When the intermediate node receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead, the intermediate node establishes an intersection.

Specifically, when the intermediate node receives the second message sent by the downstream neighboring node according to the first message through the high-order service overhead within a preset time (for example, 5 s), the intermediate node establishes a crossover.

It should be noted that when the low-order service working path is faulty, the node A initiates the switching, and each node on the low-order service protection path can directly send the SF message by using the low-order service overhead, and the switching process is the existing technology, and is no longer used again. repeat.

In the embodiment of the present invention, when the source end node of the high-order service working path and the sink end node (for example, the node F and the node G) initiate the switching at the same time, the switching process performed by the node B is the same as the foregoing, and is not repeated here. . After the intermediate node sends the SF message to the downstream neighboring node, it will adapt to the receiving port of the downstream neighboring node, and when receiving the RR message sent by the downstream neighboring node, establish a crossover, thereby shortening the switching time and improving the middle. The working efficiency of the node, at the same time, each intermediate node can receive messages with multiple granularity overheads at the same time, and also solves the problem that messages that cannot support multiple granularity overheads can be transmitted at the same time.

The second message includes an overhead part and a data part, where the overhead part includes a message type, an identifier of a high-order service working path, a granularity of a high-order service working path, and a time required for protection switching after a high-order service working path fails. Gap. The message type is specifically a reverse request message type. In other words, the second message is specifically an RR message; the identifier of the high-order service working path is W2; and the service granularity of the high-order service working path is 0DU2; The time slots required for protection switching after the high-order service working path failure are TS#1 ~ TS#8.

Further, as in the foregoing example, when the Node B receives the RR message sent by the Node C through the high-order service according to the SF message, the Node B establishes an intersection.

Optionally, before the step 530 of the embodiment of the present invention, the step of transmitting, by the intermediate node, the second message by using the high-order service overhead to the upstream neighboring node, by using the step, the upstream neighboring node may establish a cross according to the second message, thereby shortening The switching time improves the working efficiency of the node. At the same time, each node can receive messages with multiple granularity overheads at the same time, and also solves the problem that messages that cannot support multiple granularity overheads can be transmitted at the same time. Specific steps are as follows:

When the high-order service protection path is an available path, the intermediate node sends the second message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node is configured according to the The second message establishes a cross.

Specifically, as in the foregoing example, when the high-order service protection path is an available path, the node B sends an RR message to the node F through the high-order service overhead, so that the node F establishes an intersection according to the RR message.

Optionally, in the embodiment of the present invention, when the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node adapts the receiving port of the downstream neighboring node to a low-order granularity, and passes the low-order The step of the service overhead sending the first message to the downstream neighboring node again, and then performing again Adapt, create a cross. Specific steps are as follows:

When the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node adapts the receiving port of the downstream neighboring node to a low-order granularity;

The intermediate node sends the first message to the downstream neighboring node by using the low-order service overhead.

Specifically, when the intermediate node does not receive the second message sent by the downstream neighboring node within a preset time (for example, 5 s), the intermediate node determines that the downstream node is not successfully adapted, and the intermediate node cancels. The previous adaptation with the receiving port of the downstream neighboring node, that is, the intermediate node will adapt to the receiving port of the downstream neighboring node to a lower-order granularity; the intermediate node again sends the downstream neighboring node to the downstream neighboring node through the low-order service overhead. The first message is further adapted to the downstream neighboring nodes to establish a crossover.

As the foregoing example, when the Node B does not receive the RR message sent by the node C, the Node B adapts the receiving port of the node C to a low-order granularity, and the Node B sends the SF message to the node C again through the low-order service overhead. Then, it is adapted again with the node C to establish a crossover.

Therefore, by applying the switching method of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the intermediate node receives the first message sent by the upstream neighboring node through the high-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the low-order service overhead, and the receiving port of the downstream neighboring node is adapted to a high-order granularity, and the downstream neighboring node receives the high-order service overhead. When the second message is sent, a cross is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The method for switching the shared granularity service shared resources provided by the embodiment of the present invention improves the working efficiency of the intermediate node.

Embodiment 3

The following is a detailed description of a method for supporting a hybrid granularity service shared resource according to Embodiment 3 of the present invention, and FIG. 3 is a flowchart of a method for supporting a hybrid granularity service shared resource according to Embodiment 3 of the present invention. In the embodiment, the implementation entity is an intermediate node in the service protection path, and the service protection path is specifically a high-order service protection path or a low-order service protection path, and The high-order service protection path shares a plurality of intermediate nodes with the low-order service protection path, and each intermediate node supports processing of multiple granular services.

The switching method for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention is applied to the case where the high-order service working path in the optical network system is a fault path. As shown in Figure 7, this embodiment specifically includes the following steps:

Step 71: When the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the upstream in the high-order service protection path. The first message sent by the neighboring node through the low-order service overhead.

Specifically, when the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the upstream neighboring node that is in the high-order service protection path and sends the low-order service overhead. The first news.

In the embodiment of the present invention, the first message is the same as the first message disclosed in the foregoing Embodiment 2, and is not repeatedly described herein.

Further, as shown in FIG. 6, in FIG. 6, the granularity of each node and path is the same as that in the figure shown in FIG. 3, and will not be repeated here.

In one example, the intermediate node is specifically node C, the upstream neighbor node of node C is node B, and the downstream neighbor node is node D. When the node F detects the high-order service working path fault between the node and the node G, the node F initiates a switching process, and sends an SF message to the node B through the high-order service overhead. Node B sends an SF message to Node C through a low-order service overhead, and Node C receives the SF message.

Step 720: The intermediate node determines, according to the first message, whether the high-order service protection path is an available path.

Further, as in the foregoing example, the node C determines a high-order service protection path (node F-node B-node C-node D-node G) corresponding to the high-order service working path according to the identifier included in the SF message. The node C determines whether the high-order service protection path is an available path. The available path is specifically Whether the high-order service protection path is a normal path, or whether the bandwidth of the high-order service protection path is not occupied by other services.

Step 730: When the high-order service protection path is an available path, the intermediate node sends the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead.

Further, as in the foregoing example, after the node C determines that the high-order service protection path is an available path, the node C sends the SF message to the node D through the low-order service overhead.

Step 740: The intermediate node respectively adapts the receiving ports of the upstream neighboring node and the downstream neighboring node to a high-order granularity.

Specifically, after the intermediate node sends the first message to the downstream neighboring node, the receiving port of the upstream neighboring node and the downstream neighboring node are respectively adapted to a high-order granularity, so as to be adjacent to the upstream neighboring node and the downstream node. The neighbor nodes send and receive messages through high-order service overhead.

Further, as in the foregoing example, after transmitting the SF message to the node D, the node C adapts the receiving ports of the node B and the node D to a high-order granularity.

Step 750: When the intermediate node receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead, the intermediate node establishes an intersection.

In the embodiment of the present invention, when the source end node of the high-order service working path and the sink end node (for example, the node F and the node G) initiate the switching at the same time, the switching process performed by the node B is the same as the foregoing, and is not repeated here. . After the intermediate node sends the SF message to the downstream neighboring node, it will adapt to the receiving ports of the upstream neighboring node and the downstream neighboring node respectively, and establish an intersection when receiving the RR message sent by the downstream neighboring node. The switching time is shortened, and the working efficiency of the intermediate node is improved. At the same time, each intermediate node can simultaneously receive messages with multiple granularity overheads, and also solves the problem that messages that cannot support multiple granularity overheads can be transmitted at the same time.

In the embodiment of the present invention, the second message is the same as the second message disclosed in the second embodiment, and is not repeatedly described herein.

Further, as in the foregoing example, when the node C receives the RR message that the node D transmits through the high-order service according to the SF message, the node C establishes an intersection.

Optionally, after the step 740 of the embodiment of the present invention, the method further includes: sending, by the intermediate node, a second message to the upstream neighboring node by using the high-order service overhead, by using the step, the upstream neighboring node may establish a cross according to the second message, thereby shortening The switching time improves the working efficiency of the node. At the same time, each node can receive messages with multiple granularity overheads at the same time, and also solves the problem that messages that cannot support multiple granularity overheads can be transmitted at the same time. Specific steps are as follows:

Specifically, after the intermediate node adapts the receiving port of the upstream neighboring node and the downstream neighboring node to the high-order granularity, the intermediate node sends the second message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node is configured according to the upstream neighboring node. The second message establishes a cross.

As in the foregoing example, after the node C adapts the receiving ports of the node B and the node D to a high-order granularity, the node C sends an RR message to the node B through the high-order service overhead, so that the node B establishes an intersection according to the RR message.

Optionally, in the embodiment of the present invention, when the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node adapts the receiving port of the downstream neighboring node to a low-order granularity, and passes the low-order The step of the service overhead sending the first message to the downstream neighboring node again, and then adapting again to establish the crossover. Specific steps are as follows: When the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node adapts the receiving port of the downstream neighboring node to a low-order granularity;

As the foregoing example, when the node C does not receive the RR message sent by the node D, the node C adapts the receiving port of the node D to a low-order granularity, and the node C sends the SF message to the node D again through the low-order service overhead. Then, it is adapted again with the node D to establish a crossover.

Therefore, by applying the switching method of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the intermediate node receives the first message sent by the upstream neighboring node through the low-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the low-order service overhead, and the receiving port of the downstream neighboring node is adapted to a high-order granularity, and the downstream neighboring node receives the high-order service overhead. When the second message is sent, a cross is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The processing method and the processing node for supporting the mixed granularity service shared resource provided by the embodiment of the present invention improve the working efficiency of the intermediate node.

Embodiment 4

The following is a detailed description of a method for switching a hybrid granularity service shared resource according to Embodiment 4 of the present invention, and FIG. 8 is a flowchart of a method for switching a hybrid granularity service shared resource according to Embodiment 4 of the present invention. In the embodiment, the implementation entity is an intermediate node in the service protection path, and the service protection path is specifically a high-order service protection path or a low-order service protection path, and the high-order service protection path and the low-order service protection path share multiple intermediate nodes. , each intermediate node Handling of multiple granular services.

The switching method for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention is applied to the case where the high-order service working path in the optical network system is a fault path. As shown in Figure 8, this embodiment specifically includes the following steps:

Step 81: When the high-order service working path protected by the high-order service protection path is faulty, the intermediate node in the high-order service protection path receives the upstream in the high-order service protection path. The first message sent by the neighboring node through the low-order service overhead.

In the embodiment of the present invention, the first message is the same as the first message disclosed in the foregoing Embodiment 2 and Embodiment 3, and is not repeatedly described herein.

In one example, the intermediate node is specifically node D, the upstream neighbor node of node D is node C, and the downstream neighbor node is node G. When the node F detects the high-order service working path fault between the node and the node G, the node F initiates a switching process, and sends an SF message to the node B through the high-order service overhead. Node B sends an SF message to node C through low-order service overhead. Node C sends an SF message to node D through low-order service overhead, and node D receives the SF message.

Step 820: The intermediate node determines, according to the first message, whether the high-order service protection path is an available path.

Further, as in the foregoing example, the node D determines a high-order service protection path (node F-node B-node C-node D-node G) corresponding to the high-order service working path according to the identifier included in the SF message. Node D determines whether the high-order service protection path is an available path. The available path is specifically Whether the high-order service protection path is a normal path, or whether the bandwidth of the high-order service protection path is not occupied by other services.

Step 830: When the high-order service protection path is an available path, the intermediate node sends the first message to a downstream neighboring node that is in the high-order service protection path by using a high-order service overhead.

Specifically, when the high-order service protection path is an available path, the intermediate node sends the first message to the downstream neighboring node that is in the high-order service protection path by the high-order service.

Further, as in the foregoing example, after the node D determines that the high-order service protection path is an available path, the node D sends the SF message to the node D through the high-order service overhead.

It can be understood that the node D to node G segment path supports high-order service overhead.

Step 840: The intermediate node adapts the receiving port of the upstream neighboring node to a high-order granularity.

Specifically, after sending the first message to the downstream neighboring node, the intermediate node adapts the receiving port of the upstream neighboring node to a high-order granularity, so as to send and receive messages through the high-order service overhead with the upstream neighboring node.

Further, as in the foregoing example, after transmitting the SF message to the node G, the node D adapts the receiving ports of the node C and the node D to a high-order granularity.

Step 850: When the intermediate node receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead, the intermediate node establishes an intersection.

In the embodiment of the present invention, when the source end node of the high-order service working path and the sink end node (for example, the node F and the node G) initiate the switching at the same time, the switching process performed by the node B is the same as the foregoing, where No longer repeat.

After the intermediate node sends the SF message to the downstream neighboring node, it will adapt to the receiving port of the upstream neighboring node, and when receiving the RR message sent by the downstream neighboring node, establish a crossover, thereby shortening the switching time and improving the middle. The working efficiency of the node, at the same time, each intermediate node can receive messages with multiple granularity overheads at the same time, and also solves the problem that messages that cannot support multiple granularity overheads can be transmitted at the same time.

In the embodiment of the present invention, the second message is the same as the second message disclosed in the second embodiment and the third embodiment, and is not repeatedly described herein.

Further, as in the foregoing example, when the node D receives the RR message sent by the node G through the high-order service according to the SF message, the node D establishes an intersection.

Optionally, after the step 840 of the embodiment of the present invention, the step of transmitting, by the intermediate node, the second message by using the high-order service overhead to the upstream neighboring node, by using the step, the upstream neighboring node may establish a cross according to the second message, thereby shortening The switching time improves the working efficiency of the node. At the same time, each node can receive messages with multiple granularity overheads at the same time, and also solves the problem that messages that cannot support multiple granularity overheads can be transmitted at the same time. Specific steps are as follows:

Specifically, after the intermediate node adapts the receiving port of the upstream neighboring node to the high-order granularity, the intermediate node sends the second message to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node establishes the intersection according to the second message.

As in the previous example, after node D adapts the receiving port of node C to a higher-order granularity, node D sends an RR message to node C through high-order service overhead, so that node C establishes a cross according to the RR message.

Optionally, in the embodiment of the present invention, when the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node sends the first message to the downstream neighboring node by using the low-order service overhead, and then Establish a cross. Specific steps are as follows: When the intermediate node does not receive the second message sent by the downstream neighboring node, the intermediate node sends the first message to the downstream neighboring node by using the high-order service overhead.

Specifically, when the intermediate node does not receive the second message sent by the downstream neighboring node within a preset time (for example, 5 s), the intermediate node determines that the downstream neighboring node is not successfully adapted, and the intermediate node again The first message is sent to the downstream neighboring node through the low-order service overhead, and the crossover is established again.

As in the foregoing example, when the node D does not receive the RR message sent by the node G, the node D sends the SF message to the node G again through the low-order service overhead, and then establishes the cross again.

Therefore, by applying the switching method of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the intermediate node receives the first message sent by the upstream neighboring node through the low-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the high-order service overhead, and the receiving port of the downstream neighboring node is adapted to the high-order granularity, and the downstream neighboring node is sent through the high-order service. The second message is when the cross is established. In the prior art, the intermediate node cannot simultaneously support the message with multiple granularity overheads, and reduces the work efficiency of the intermediate node. The processing method and the processing node for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention improve the working efficiency of the intermediate node.

Further, when the signaling diagram shown in FIG. 6 is a high-order service working path failure, each node on the high-order service protection path performs a switching process, and each intermediate node in the signaling diagram shown in FIG. 6 may be The process described in the foregoing Embodiment 2, Embodiment 3, and Embodiment 4 is performed, and will not be repeated herein.

Embodiment 5

Correspondingly, the fifth embodiment of the present invention further provides a protection node that supports the hybrid granularity service shared resource, and is used to implement the protection method for supporting the hybrid granularity service shared resource provided by the foregoing first embodiment, the high-order service protection path and the low-order The service protection path shares a plurality of the protection nodes, and each of the protection nodes supports processing of multiple granular services. As shown in FIG. 9, the protection node includes: a receiving unit 91 0 and a sending unit 920. The receiving node, which is included in the protection node, is configured to: when the high-order service working path protected by the high-order service protection path is normal, receive the upstream neighboring node in the high-order service protection path to pass the low-order The first message sent by the service overhead;

The sending unit 920 is configured to send, by using the low-order service overhead, the first message to a downstream neighboring node in the high-order service protection path, where the first message is used to enable the high-order service protection Each node in the path maintains the high-order service protection path.

Further, before the receiving unit receives the first message sent by the upstream neighboring node in the high-order service protection path by using the low-order service overhead, the protection node further includes:

The receiving unit 91 0 is further configured to: when the high-order service working path has recovered from a fault to a normal state, receive, by using the high-order service overhead, the upstream neighboring node that is in the high-order service protection path Second message

The sending unit 920 is further configured to send, by using the high-order service overhead, the second message to the downstream neighboring node that is in the high-order service protection path;

The receiving unit 910 is further configured to receive a third message that is sent by the downstream neighboring node by the high-order service.

The adaptation removal unit 930 is configured to adapt, according to the third message, the granularity of the high-order service protection path with the downstream neighboring node to a low-order service cost, and remove the downstream phase The intersection established by the neighboring nodes;

The sending unit 920 is further configured to send the third message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node performs the protection according to the third message. The granularity of the high-order service protection path between the nodes is adapted to a low-order service overhead, and the intersection established with the protection node is removed.

The first message received by the receiving unit 910 includes the message type, the identifier of the high-order service working path, the granularity of the high-order service working path, and the failure of the high-order service working path. Protect the time slots required for switching.

Therefore, by applying the protection node that supports the hybrid granular shared resource provided by the embodiment of the present invention, When the high-order service working path is normal, the protection node receives the first message sent by the upstream neighboring node in the high-order service protection path by using the low-order service overhead, and the first message is in the high-order service protection path. The downstream neighboring nodes send, so that each node in the high-order service protection path maintains the high-order service protection path. In the prior art, in the case that the working path is normal, the protection node cannot simultaneously support the message with multiple granularity overheads on the protection path, and the problem that the protection path is faulty cannot be sensed in time. The protection node supporting the hybrid granularity service shared resource provided by the embodiment of the present invention overcomes the limitations of the prior art solution and improves the working efficiency of the intermediate node.

Embodiment 6

Correspondingly, the sixth embodiment of the present invention further provides a switching node that supports the mixed-grain service sharing resource, and implements the switching method for supporting the hybrid granularity service shared resource provided by the foregoing Embodiment 2, the high-order service protection path and the low-order The service protection path shares a plurality of the switching nodes, and each of the switching nodes supports processing of multiple granular services. As shown in FIG. 10, the switching node includes: a receiving unit 1010, a determining unit 1 020, and a sending unit 1 030, an adaptation unit 1040, and an establishment unit 1 050.

The receiving unit 1010 is configured to receive, when the high-order service working path protected by the high-order service protection path is faulty, receive an upstream neighbor node that is in the high-order service protection path, and pass the high-order The first message sent by the service overhead;

The determining unit 1020 is configured to determine, according to the first message, whether the high-order service protection path is an available path.

The sending unit 1030 is configured to: when the high-order service protection path is an available path, send the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead;

The adapting unit 1040 is configured to: when the high-order service protection path is an available path, adapt the receiving port of the downstream neighboring node to a high-order granularity;

The establishing unit 1050 is configured to: when the receiving unit receives the downstream neighboring node, according to the The cross is established when the first message is sent by the high-order service overhead.

Further, the sending unit 1 030 is further configured to send, when the high-order service protection path is an available path, to the downstream neighboring node that is in the high-order service protection path by using a low-order service overhead. Before the first message, sending the second message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node establishes an intersection according to the second message.

Further, the adapting unit 1 040 is further configured to: when the receiving unit does not receive the second message sent by the downstream neighboring node, adapt the receiving port of the downstream neighboring node Low-order granularity;

The sending unit 1030 is further configured to: when the receiving unit 1 010 does not receive the second message sent by the downstream neighboring node, send the location to the downstream neighboring node by using the low-order service overhead. Said the first message.

Therefore, by applying the switching node that supports the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the switching node receives the first message sent by the upstream neighboring node through the high-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the low-order service overhead, and the receiving port of the downstream neighboring node is adapted to the high-order granularity, and the downstream neighboring node receives the high-order service overhead. When the second message is sent, a cross is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The switching node supporting the mixed granularity service shared resource provided by the embodiment of the present invention improves the working efficiency of the intermediate node.

Example 7

Correspondingly, the seventh embodiment of the present invention further provides a switching node that supports the hybrid granularity service shared resource, and implements the switching method for supporting the hybrid granularity service shared resource provided in the foregoing third embodiment, the high-order service protection path and the low-order The service protection path shares a plurality of the switching nodes, and each of the switching nodes supports processing of multiple granular services. As shown in FIG. 11, the switching node includes: a receiving unit 1110, a determining unit 1120, and a sending unit 1. 1 30, an adaptation unit 1140 and an establishment unit 1 150. The receiving unit 1110 includes: a receiving unit 1110, configured to: when the high-order service working path protected by the high-order service protection path is faulty, receive an upstream neighboring node that is in the high-order service protection path and pass the low-order The first message sent by the service overhead;

The determining unit 1120 is configured to determine, according to the first message, whether the high-order service protection path is an available path;

The sending unit 11 30 is configured to: when the high-order service protection path is an available path, send the first message to a downstream neighboring node that is in the high-order service protection path by using a low-order service overhead;

The adapting unit 1140 is configured to: when the high-order service protection path is an available path, respectively adapt the receiving ports of the upstream neighboring node and the downstream neighboring node to a high-order granularity;

The establishing unit 1150 is configured to establish an intersection when the receiving unit receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead.

Further, the sending unit 117 is further configured to: after the adapting unit 1140 respectively adapts the receiving ports of the upstream neighboring node and the downstream neighboring node to a high-order granularity, pass the high The order service overhead sends the second message to the upstream neighboring node, such that the upstream neighboring node establishes an intersection according to the second message.

Further, the adapting unit 1140 is further configured to: when the receiving unit does not receive the second message sent by the downstream neighboring node, adapt the receiving port of the downstream neighboring node Low-order granularity;

The sending unit 117 is further configured to send, when the receiving unit 1 110 does not receive the second message sent by the downstream neighboring node, to the downstream neighboring node by using the low-order service overhead. The first message.

Therefore, by applying the switching node of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the switching node receives the first message sent by the upstream neighboring node through the low-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the low-order service overhead, and the receiving port of the downstream neighboring node is adapted to the high-order granularity. Degree, when a second message sent by a downstream neighbor node through a high-order service is received, an intersection is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The switching node supporting the mixed granularity service shared resource provided by the embodiment of the present invention improves the working efficiency of the intermediate node.

Example eight

Correspondingly, the embodiment 8 of the present invention further provides an switching node that supports the hybrid granularity service sharing resource, and implements the switching method for supporting the hybrid granularity service shared resource provided in the foregoing fourth embodiment, the high-order service protection path and the low-order The service protection path shares a plurality of the switching nodes, and each of the switching nodes supports processing of multiple granular services. As shown in FIG. 12, the switching node includes: a receiving unit 1210, a determining unit 1220, and a sending unit 1230. The adaptation unit 1240 and the establishment unit 1250.

The receiving unit 1210 is configured to receive, when the high-order service working path protected by the high-order service protection path is faulty, receive the upstream neighboring node that is in the high-order service protection path, and pass the low-order The first message sent by the service overhead;

The determining unit 1220 is configured to determine, according to the first message, whether the high-order service protection path is an available path;

The sending unit 1230 is configured to: when the high-order service protection path is an available path, send the first message to a downstream neighboring node that is in the high-order service protection path by using a high-order service overhead;

The adapting unit 1240 is configured to: when the high-order service protection path is an available path, adapt the receiving port of the upstream neighboring node to a high-order granularity;

The establishing unit 1250 is configured to establish an intersection when the receiving unit receives the second message sent by the downstream neighboring node according to the first message by using the high-order service overhead.

Further, the sending unit 1230 is further configured to: after the adapting unit adapts the receiving port of the upstream neighboring node to a high-order granularity, to the upstream neighboring node by using the high-order service overhead Sending the second message, so that the upstream neighboring node establishes according to the second message Cross.

Further, the sending unit 1230 is further configured to: when the receiving unit does not receive the second message sent by the downstream neighboring node, send, by using the high-order service overhead, to the downstream neighboring node. The first message.

Therefore, by applying the switching node that supports the hybrid granularity shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the switching node receives the first message sent by the upstream neighboring node through the low-order service overhead, when the high-order service is sent. When the protection path is available, the first message is sent to the downstream neighboring node through the high-order service overhead, and the receiving port of the downstream neighboring node is adapted to the high-order granularity, and the downstream neighboring node is sent through the high-order service. When the second message is reached, a cross is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The switching node supporting the mixed granularity service shared resource provided by the embodiment of the present invention improves the working efficiency of the intermediate node.

Example nine

In addition, the protection node that supports the hybrid granularity service shared resource provided by the fifth embodiment of the present invention can also be implemented as follows to implement the protection method for supporting the hybrid granularity service shared resource in the foregoing first embodiment of the present invention. The service protection path and the low-order service protection path share a plurality of the protection nodes, and each of the protection nodes supports processing of multiple granular services. As shown in FIG. 13 , the protection node includes: a processor 1 310 and Memory 1 320. System bus 1 330 is used to connect processor 1 310 and memory 1 320.

Memory 1 320 can be a persistent storage, such as a hard drive and flash memory, and memory 1 320 is used to store applications, the application including instructions that can be used to cause processor 1 310 to access and execute the following instructions:

Passing the low-order service overhead to the downstream neighboring node in the high-order service protection path Sending the first message, where the first message is used to maintain the high-order service protection path by each node in the high-order service protection path.

Further, the application further includes instructions operable to cause the processor 1 310 to perform the following process:

Before receiving the first message sent by the upstream neighboring node in the high-order service protection path by using the low-order service overhead, when the high-order service working path has recovered from the fault to normal, receiving the high-order service a second message sent by the upstream neighboring node of the protection path by a high-order service overhead;

Transmitting, by the high-order service overhead, the second message to the downstream neighboring node in the high-order service protection path;

Receiving a third message that is sent by the downstream neighboring node by using the high-order service overhead; and, according to the third message, adapting a granularity of the high-order service protection path between the downstream neighboring node to Lower-order service overhead, and tearing off the intersection established with the downstream neighboring node; transmitting the third message to the upstream neighboring node by using the high-order service overhead, so that the upstream neighboring node is according to the And a third message, the granularity of the high-order service protection path between the protection node is adapted to a low-order service overhead, and the intersection established with the protection node is removed.

Further, the first message includes the message type, the identifier of the high-order service working path, the granularity of the high-order service working path, and a required protection switching after the high-order service working path fails. Time slot.

Therefore, by applying the protection node supporting the hybrid granularity shared resource provided by the embodiment of the present invention, when the high-order service working path is normal, the protection node receives the upstream neighboring node in the high-order service protection path and sends the low-order service overhead. The first message is sent to the downstream neighboring node in the high-order service protection path, so that each node in the high-order service protection path maintains the high-order service protection path. In the prior art, in the case that the working path is normal, the intermediate node cannot simultaneously support the message with multiple granularity overheads on the protection path, and the problem that the protection path is faulty cannot be sensed in time. Supporting hybrid granularity provided by embodiments of the present invention The protection node of the service shared resource overcomes the limitations of the prior art solution and improves the working efficiency of the intermediate node.

Example ten

In addition, the switching node that supports the hybrid granularity service shared resource provided by the sixth embodiment of the present invention can also be implemented as follows, to implement the switching method for supporting the hybrid granularity service shared resource in the foregoing second embodiment of the present invention, The service protection path and the low-order service protection path share a plurality of the switching nodes, and each of the switching nodes supports processing of multiple granular services. As shown in FIG. 14, the switching node includes: a processor 1410 and a memory 1420. . System bus 1430 is used to connect processor 1410 and memory 1420.

The memory 1420 can be a persistent storage, such as a hard drive and flash memory, and the memory 1420 is for storing applications, the application including instructions for enabling the processor 1410 to access and execute the following instructions:

Adapting the receiving port of the downstream neighboring node to a high-order granularity;

And when the second neighboring node receives the second message sent by the high-order service overhead according to the first message, establishing an intersection.

Further, the application further includes instructions operable to cause the processor 1410 to perform the following process:

When the high-order service protection path is an available path, the high-order service overhead is used before the first message is sent to the downstream neighboring node in the high-order service protection path by the low-order service overhead. Sending, by the upstream neighbor node, the second message, so that the upstream adjacent node The point establishes an intersection according to the second message.

Further, the application further includes instructions operable to cause the processor 1420 to perform the following process:

When the second message sent by the downstream neighboring node is not received, the receiving port of the downstream neighboring node is adapted to a low-order granularity, and the downstream neighboring is adjacent to the low-order service overhead. The node sends the first message.

Therefore, by applying the switching node that supports the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the switching node receives the first message sent by the upstream neighboring node through the high-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the low-order service overhead, and the receiving port of the downstream neighboring node is adapted to a high-order granularity, and the downstream neighboring node receives the high-order service overhead. When the second message is sent, a cross is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The switching node supporting the mixed granularity service shared resource provided by the embodiment of the present invention improves the working efficiency of the intermediate node.

Embodiment 11

In addition, the switching node that supports the hybrid granularity service shared resource provided by the sixth embodiment of the present invention can also be implemented as follows, and is used to implement the switching method for supporting the hybrid granularity service shared resource in the foregoing third embodiment of the present invention. The service protection path and the low-order service protection path share a plurality of the switching nodes, and each of the switching nodes supports processing of multiple granular services. As shown in FIG. 15, the switching node includes: a processor 1510 and a memory 1520. . System bus 1530 is used to connect processor 1510 and memory 1520.

The memory 1520 can be a persistent storage, such as a hard drive and flash memory, and the memory 1520 is for storing applications, the application including instructions for enabling the processor 1510 to access and execute the following instructions:

When the high-order service working path protected by the high-order service protection path is faulty, receiving the first cancellation sent by the upstream neighboring node in the high-order service protection path by using a low-order service overhead Interest rate

Adapting the receiving ports of the upstream neighboring node and the downstream neighboring node to a higher-order granularity, respectively;

An intersection is established when receiving the second message sent by the downstream neighboring node according to the first message through the high-order neighboring overhead.

Further, the application further includes instructions operable to cause the processor 1510 to perform the following process:

Further, the application further includes instructions operable to cause the processor 1520 to perform the following process:

Therefore, by applying the switching node of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the switching node receives the first message sent by the upstream neighboring node through the low-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the low-order overhead, and the receiving port of the downstream neighboring node is adapted to the high-order granularity, and the downstream neighboring node is sent through the high-order service overhead. The second message is when the cross is established. In the prior art, the problem that the intermediate node cannot simultaneously support multiple granularity overhead messages to transmit and reduce the working efficiency of the intermediate node is solved. The processing method and the processing node for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention improve the working efficiency of the intermediate node. Example twelve

In addition, the switching node that supports the hybrid granularity service shared resource provided by the embodiment 8 of the present invention can also be implemented as follows, and is used to implement the switching method for supporting the hybrid granularity service shared resource in the foregoing fourth embodiment of the present invention. The service protection path and the low-order service protection path share a plurality of the switching nodes, and each of the switching nodes supports processing of multiple granular services. As shown in FIG. 16, the switching node includes: a processor 1610 and a memory 1620. . System bus 1640 is used to connect processor 1610 and memory 1620.

The memory 1620 can be a persistent storage, such as a hard drive and flash memory, and the memory 1620 is for storing applications, the application including instructions for enabling the processor 1610 to access and execute the following instructions:

Adapting the receiving port of the upstream neighboring node to a high-order granularity;

Further, the application further includes instructions operable to cause the processor 1610 to perform the following process:

After the receiving port of the upstream neighboring node is adapted to a high-order granularity, the second message is sent to the upstream neighboring node by the high-order traffic overhead, so that the upstream neighboring node is configured according to the The second message is established to cross.

Further, the application further includes instructions operable to cause the processor 1620 to perform the following process: And when the second message sent by the downstream neighboring node is not received, sending the first message to the downstream neighboring node by using the high-order service overhead.

Therefore, by applying the switching node of the hybrid granularity service shared resource provided by the embodiment of the present invention, when the high-order service working path is faulty, the switching node receives the first message sent by the upstream neighboring node through the low-order service overhead, when the high-order When the service protection path is available, the first message is sent to the downstream neighboring node through the high-order service overhead, and the receiving port of the downstream neighboring node is adapted to the high-order granularity, and the downstream neighboring node is sent through the high-order service. The second message is when the cross is established. In the prior art, the intermediate node cannot simultaneously support the message with multiple granularity overheads, and reduces the work efficiency of the intermediate node. The processing method and the processing node for supporting the hybrid granularity service shared resource provided by the embodiment of the present invention improve the working efficiency of the intermediate node.

A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field Any other form of storage medium known.

The above described embodiments of the present invention are further described in detail, and the embodiments of the present invention are intended to be illustrative only. The scope of the protection, any modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

claims

1. A switching method that supports mixed-granularity service sharing resources. The high-order service protection path and the low-order service protection path share multiple intermediate nodes, and each of the intermediate nodes supports the high-order service and the low-order service. , characterized in that the method includes:

When the high-order service working path protected by the high-order service protection path fails, the intermediate node in the high-order service protection path receives the upstream adjacent node in the high-order service protection path. The first message sent by high-level business overhead;

According to the first message, the intermediate node determines whether the high-order service protection path is an available path;

When the high-order service protection path is an available path, the intermediate node sends the first message to the downstream adjacent node that is also in the high-order service protection path through the low-order service overhead; the intermediate node will The receiving port of the downstream adjacent node is adapted to a high-order granularity; when the intermediate node receives the second message sent by the downstream adjacent node through the high-order service overhead according to the first message, The intermediate nodes establish crossovers.

2. The switching method according to claim 1, characterized in that, before the intermediate node sends the first message to the downstream adjacent node that is also in the high-order service protection path through the low-order service overhead, it further includes: :

When the high-order service protection path is an available path, the intermediate node sends the second message to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node performs the processing according to the first The two messages create a crossover.

3. The switching method according to claim 1, characterized in that, the method further includes: when the intermediate node does not receive the second message sent by the downstream adjacent node, the intermediate node will The receiving port of the downstream adjacent node is adapted to a low-order granularity, and the intermediate node sends the first message to the downstream adjacent node through the low-order service overhead.

4. A switching method that supports shared resources for mixed-granularity services. A high-order service protection path and a low-order service protection path share multiple intermediate nodes, and each of the intermediate nodes supports the high-order service. and the low-level business, characterized in that the method includes:

When the high-order service working path protected by the high-order service protection path fails, the intermediate node in the high-order service protection path receives the upstream adjacent node in the high-order service protection path. The first message sent by low-level business overhead;

When the high-order service protection path is an available path, the intermediate node sends the first message to downstream adjacent nodes that are also in the high-order service protection path through low-order service overhead; the intermediate nodes respectively adapting receive ports to the upstream neighbor node and the downstream neighbor node to a higher order of granularity;

When the intermediate node receives the second message sent by the downstream adjacent node through the high-order service overhead according to the first message, the intermediate node establishes a cross-connection.

5. The switching method according to claim 4, characterized in that, after the intermediate node respectively adapts the receiving ports of the upstream adjacent node and the downstream adjacent node to high-order granularity, it further includes:

The intermediate node sends the second message to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node establishes a cross-connection according to the second message.

6. The switching method according to claim 4, wherein the method further includes: when the intermediate node does not receive the second message sent by the downstream adjacent node, the intermediate node will The receiving port of the downstream adjacent node is adapted to a low-order granularity, and the intermediate node sends the first message to the downstream adjacent node through the low-order service overhead.

7. A switching method that supports mixed-granularity service sharing resources. The high-order service protection path and the low-order service protection path share multiple intermediate nodes, and each of the intermediate nodes supports the high-order service and the low-order service. , characterized in that the method includes:

When the high-order service working path protected by the high-order service protection path fails, the intermediate node in the high-order service protection path receives the message that is also in the high-order service protection path. The first message sent by the upstream neighbor node through low-order service overhead;

When the high-order service protection path is an available path, the intermediate node sends the first message to the downstream adjacent node that is also in the high-order service protection path through the high-order service overhead; the intermediate node will The receiving port of the upstream neighboring node is adapted to a high-order granularity; when the intermediate node receives the second message sent by the downstream neighboring node according to the first message through the high-order service overhead, The intermediate nodes establish crossovers.

8. The switching method according to claim 7, characterized in that after the intermediate node adapts the receiving port with the upstream adjacent node to a high-order granularity, it further includes:

9. The switching method according to claim 7, wherein the method further includes: when the intermediate node does not receive the second message sent by the downstream adjacent node, the intermediate node passes The high-order service overhead sends the first message to the downstream adjacent node.

10. A protection method that supports mixed-granularity service sharing resources. The high-order service protection path and the low-order service protection path share multiple intermediate nodes, and each of the intermediate nodes supports the high-order service and the low-order service. , characterized in that the method includes:

When the high-order service working path protected by the high-order service protection path is normal, the intermediate node receives the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead;

The intermediate node sends the first message to the downstream adjacent node in the high-order service protection path through the low-order service overhead, and the first message is used to cause the node in the high-order service protection path to Each node maintains the high-order service protection path.

11. The protection method according to claim 10, characterized in that, the intermediate node receives the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead. The message also previously included:

When the high-order service working path has recovered from the fault to normal, the intermediate node receives the second message sent by the upstream adjacent node on the high-order service protection path through high-order service overhead;

The intermediate node sends the second message to the downstream adjacent node in the high-order service protection path through the high-order service overhead;

The intermediate node receives the third message sent by the downstream adjacent node through the high-order service overhead;

According to the third message, the intermediate node adapts the granularity of the high-order service protection path with the downstream adjacent node to a low-order service overhead, and dismantles the link established with the downstream adjacent node. cross; cross

The intermediate node sends the third message to the upstream adjacent node through the high-order service overhead, so that the upstream adjacent node transfers all connections between the intermediate node and the intermediate node according to the third message. The granularity of the high-order service protection path is adapted to the low-order service overhead, and the intersection established with the intermediate node is removed.

12. The protection method according to claim 10 or 11, characterized in that the first message includes the message type, the identification of the high-order service working path, and the identification of the high-order service working path. Granularity and time slots required for protection switching when the high-order service working path fails.

13. A switching node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple switching nodes, and each of the switching nodes supports the high-order service and the low-order service. order service, characterized in that the switching node includes:

A receiving unit, configured to receive a first message sent by an upstream adjacent node that is also in the high-order service protection path through the high-order service overhead when the high-order service working path protected by the high-order service protection path fails. ;

A judging unit, configured to judge whether the high-order service protection path is available paths;

A sending unit, configured to send the first message to downstream adjacent nodes that are also in the high-order service protection path through low-order service overhead when the high-order service protection path is an available path; an adaptation unit, Used to adapt the receiving port with the downstream adjacent node to a high-order granularity when the high-order service protection path is an available path;

An establishing unit, configured to establish a cross-connection when the receiving unit receives the second message sent by the downstream adjacent node through the high-order service overhead according to the first message.

14. The switching node according to claim 13, characterized in that, the sending unit is further configured to: when the high-order service protection path is an available path, send the low-order service overhead to the same person in the high-order service. Before the downstream adjacent node in the service protection path sends the first message, the second message is sent to the upstream adjacent node through the high-order service overhead, so that the upstream adjacent node sends the second message according to the first message. The two messages create a crossover.

15. The switching node according to claim 13, wherein the adaptation unit is further configured to: when the receiving unit does not receive the second message sent by the downstream adjacent node, Adapt to a low-order granularity with the receiving port of the downstream adjacent node;

The sending unit is also configured to: when the receiving unit does not receive the second message sent by the downstream adjacent node, send the first message to the downstream adjacent node through the low-order service overhead. information.

16. A switching node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple switching nodes, and each of the switching nodes supports the high-order service and the low-order service. order service, characterized in that the switching node includes:

A receiving unit, configured to receive a first message sent by an upstream adjacent node in the high-order service protection path through low-order service overhead when the high-order service working path protected by the high-order service protection path fails. ;

A judging unit, configured to judge whether the high-order service protection path is an available path according to the first message; A sending unit, configured to send the first message to downstream adjacent nodes that are also in the high-order service protection path through low-order service overhead when the high-order service protection path is an available path; an adaptation unit, Used to adapt the receiving ports to the upstream adjacent node and the downstream adjacent node to high-order granularity when the high-order service protection path is an available path;

17. The switching node according to claim 16, wherein the sending unit is further configured to: the adapting unit adapts the receiving ports of the upstream adjacent node and the downstream adjacent node respectively. After reaching the high-order granularity, the second message is sent to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node establishes a cross-connection according to the second message.

18. The switching node according to claim 16, wherein the adaptation unit is further configured to: when the receiving unit does not receive the second message sent by the downstream adjacent node, The receiving port of the downstream adjacent node is adapted to a low-order granularity;

19. A switching node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple switching nodes, and each of the switching nodes supports the high-order service and the low-order service. order service, characterized in that the switching node includes:

A judging unit, configured to judge whether the high-order service protection path is an available path according to the first message;

A sending unit, configured to send the first message to downstream adjacent nodes that are also in the high-order service protection path through high-order service overhead when the high-order service protection path is an available path; An adaptation unit configured to adapt the receiving port of the upstream adjacent node to a high-order granularity when the high-order service protection path is an available path;

20. The switching node according to claim 19, characterized in that: the sending unit is further configured to: after the adapting unit adapts the receiving port with the upstream adjacent node to a high-order granularity, through the The high-order service overhead sends the second message to the upstream neighboring node, so that the upstream neighboring node establishes a cross-connection according to the second message.

21. The switching node according to claim 19, wherein the sending unit is further configured to: when the receiving unit does not receive the second message sent by the downstream adjacent node, through the The high-order service overhead sends the first message to the downstream neighboring node.

22. A protection node that supports shared resources for mixed-granularity services. A high-order service protection path and a low-order service protection path share multiple protection nodes, and each of the protection nodes supports the high-order service and the low-order service. level service, characterized in that the protection nodes include:

A receiving unit configured to receive the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead when the high-order service working path protected by the high-order service protection path is normal;

A sending unit, configured to send the first message to the downstream adjacent node in the high-order service protection path through the low-order service overhead, where the first message is used to cause the node in the high-order service protection path to Each node in the system maintains the high-order service protection path.

23. The protection node according to claim 22, characterized in that, before the receiving unit receives the first message sent by the upstream neighboring node in the high-order service protection path through the low-order service overhead, the protection Nodes also include:

The receiving unit is also configured to receive a second message sent by the upstream adjacent node on the high-order service protection path through the high-order service overhead when the high-order service working path has recovered from a fault. ; The sending unit is further configured to send the second message to the downstream adjacent node on the high-order service protection path through the high-order service overhead;

The receiving unit is also configured to receive the third message sent by the downstream adjacent node through the high-order service overhead;

An adaptation and removal unit configured to adapt the granularity of the high-order service protection path with the downstream adjacent node to the low-order service overhead according to the third message, and remove the high-order service protection path with the downstream adjacent node. Node established intersection;

The sending unit is further configured to send the third message to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node will communicate with the protection node according to the third message. The granularity of the high-order service protection path between them is adapted to the low-order service overhead, and the intersection established with the protection node is removed.

24. The protection node according to claim 22 or 23, wherein the first message received by the receiving unit includes the message type, the identifier of the high-order service working path, the The granularity of the high-order service working path and the time slots required for protection switching when the high-order service working path fails.

25. A switching node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple switching nodes, and each of the switching nodes supports the high-order service and the low-order service. order service, characterized in that the switching node includes:

processor;

memory;

An application program physically stored in the memory, the application program including instructions that may be used to cause the processor to perform the following processes:

When the high-order service working path protected by the high-order service protection path fails, receive the first message sent by the upstream adjacent node that is also in the high-order service protection path through the high-order service overhead;

According to the first message, determine whether the high-order service protection path is an available path; When the high-order service protection path is an available path, sending the first message to downstream adjacent nodes that are also in the high-order service protection path through low-order service overhead;

Adapt the receive port to the downstream adjacent node to a higher order of granularity;

When the second message sent by the downstream adjacent node through the high-order service overhead according to the first message is received, a cross-connection is established.

26. The switching node according to claim 25, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

When the high-order service protection path is an available path, before sending the first message to the downstream adjacent node that is also in the high-order service protection path through the low-order service overhead, The upstream neighboring node sends the second message, so that the upstream neighboring node establishes a cross-connection according to the second message.

27. The switching node according to claim 25, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

When the second message sent by the downstream neighboring node is not received, the receiving port with the downstream neighboring node is adapted to a low-order granularity, and the low-order service overhead is used to send the message to the downstream neighboring node. The node sends the first message.

28. A switching node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple switching nodes, and each of the switching nodes supports the high-order service and the low-order service. order service, characterized in that the switching node includes:

processor;

memory;

When the high-order service working path protected by the high-order service protection path fails, receive the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead; According to the first message, it is judged whether the high-order service protection path is an available path; when the high-order service protection path is an available path, the low-order service overhead is used to send information to the user in the high-order service protection path. The downstream adjacent node sends the first message;

Adapt the receiving ports to the upstream adjacent node and the downstream adjacent node to high-order granularity respectively;

29. The switching node according to claim 28, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

After respectively adapting the receiving ports of the upstream neighboring node and the downstream neighboring node to high-order granularity, the second message is sent to the upstream neighboring node through the high-order service overhead, so that The upstream neighboring node establishes the intersection according to the second message.

30. The switching node according to claim 28, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

31. A switching node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple switching nodes, and each of the switching nodes supports the high-order service and the low-order service. order service, characterized in that the switching node includes:

processor;

memory;

When the high-order service working path protected by the high-order service protection path fails, the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead is received. interest;

According to the first message, it is judged whether the high-order service protection path is an available path; when the high-order service protection path is an available path, the high-order service protection path is used to send information to the high-order service protection path through the high-order service overhead. The downstream adjacent node sends the first message;

Adapt the receiving port to the upstream neighboring node to a higher order of granularity;

32. The switching node according to claim 31, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

After adapting the receiving port with the upstream neighboring node to a high-order granularity, the second message is sent to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node can The second message establishes the intersection.

33. The switching node according to claim 31, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

When the second message sent by the downstream adjacent node is not received, the first message is sent to the downstream adjacent node through the high-order service overhead.

34. A protection node that supports mixed-granularity service sharing resources. A high-order service protection path and a low-order service protection path share multiple protection nodes, and each of the protection nodes supports the high-order service and the low-order service. level service, characterized in that the protection nodes include:

processor;

memory;

When the high-order service working path protected by the high-order service protection path is normal, receive the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead; The first message is sent to downstream adjacent nodes in the high-order service protection path through the low-order service overhead, and the first message is used to enable each node in the high-order service protection path to The high-order service protection path is maintained.

35. The protection node according to claim 34, wherein the application program further includes instructions that can be used to cause the processor to perform the following process:

Before receiving the first message sent by the upstream adjacent node in the high-order service protection path through the low-order service overhead, when the high-order service working path has recovered from the fault to normal, receiving the high-order service The second message sent by the upstream adjacent node of the protection path through high-order service overhead;

Send the second message to the downstream adjacent node on the high-order service protection path through the high-order service overhead;

Receive a third message sent by the downstream adjacent node through the high-order service overhead; according to the third message, adapt the granularity of the high-order service protection path with the downstream adjacent node to low-order service overhead, and remove the intersection established with the downstream neighboring node; send the third message to the upstream neighboring node through the high-order service overhead, so that the upstream neighboring node can The third message is to adapt the granularity of the high-order service protection path with the protection node to the low-order service overhead, and remove the intersection established with the protection node.

36. The protection node according to any one of claims 34 or 35, characterized in that the first message includes the message type, the identification of the high-order service working path, and the identification of the high-order service working path. Granularity and time slots required for protection switching when the high-order service working path fails.