CN109995567A - Method, device and system for automatic protection of link aggregation group - Google Patents

Abstract

The invention discloses a method, equipment and system for automatic protection of link aggregation groups. The method includes: a first network element determining that a working bandwidth of a first link aggregation group is less than or equal to a first bandwidth threshold, where the first link aggregation group is a link between the first network element and the second network element aggregation group; the first network element records that the first link aggregation group has a lightweight fault, and switches the first link aggregation group to the second link aggregation group; the working bandwidth of the second link aggregation group is less than Or when it is equal to the second bandwidth threshold, the second link aggregation group is switched to the first link aggregation group according to the record of the light-weight failure of the first link aggregation group. The above method can switch to the second link aggregation group without fault when the first link aggregation group does not meet the expected bandwidth, and when the second link aggregation group fails, switch to the first link aggregation group again, preferably to ensure the quality of data communication.

Description

Method, device and system for automatic protection of link aggregation group

technical field

The present invention relates to the field of communications, and in particular, to a method, device and system for automatic protection of a link aggregation group.

Background technique

With the development of mobile communication technologies, more and more communication systems use a link aggregation group (Link Aggregation Group, LAG) mode to perform data communication. The link aggregation group is a logical link with larger bandwidth formed by aggregating multiple links.

Taking a simple binary communication system as an example, as shown in Figure 1, the first network element and the second network element communicate with each other through the first link aggregation group consisting of link 1, link 2, and link 3. communication. In the normal working state, the working bandwidth of the first link aggregation group is equal to the sum of the working bandwidths of link 1, link 2 and link 3; when some links are damaged, the working bandwidth of the first link aggregation group Less than the sum of the bandwidths of the normal working links. To ensure normal operation between the first network element and the second network element, a second link aggregation group may also be set between the first network element and the second network element, where the second link aggregation group includes links 4. Link 5 and Link 6.

When the normal working bandwidth of the first link aggregation group is damaged and the data communication requirements between the first network element and the second network element cannot be met, the first network element may switch the first link aggregation group to the second network element Link Aggregation Group. That is, before the switchover, data communication is performed between the first network element and the second network element through the first link aggregation group, and after the switchover, the second link aggregation group is used between the first network element and the second network element for data communication. data communication.

However, if the second link aggregation group between the first network element and the second network element fails, even though the first link aggregation group between the first network element and the second network element is only damaged in bandwidth Instead of completely inoperable, data communication between the first network element and the second network element is still impossible.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method, device, and system for automatic protection of a link aggregation group, which can switch to a fault-free second link aggregation group when the first link aggregation group does not meet the expected bandwidth, and the second link aggregation group When the link aggregation group fails, it is switched to the first link aggregation group to better ensure the quality of data communication.

In a first aspect, a method for automatically protecting a link aggregation group is provided, including:

The first network element determines that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, where the first link aggregation group is the link aggregation between the first network element and the second network element Group;

The first network element records that a lightweight fault has occurred in the first link aggregation group, and switches the first link aggregation group to a second link aggregation group, where the second link aggregation group is The aggregation group is a link aggregation group between the first network element and the second network element;

When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, the second link aggregation group is switched to the other link aggregation group according to the record of the light failure of the first link aggregation group the first link aggregation group.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first network element adds links in the second link aggregation group to obtain the added second link aggregation group; the The first network element determines that the working bandwidth of the added second link aggregation group is greater than the working bandwidth of the first link aggregation group; the first network element switches the first link aggregation group to the the added second link aggregation group.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the first network element deletes the links in the first link aggregation group to obtain the deleted first link aggregation group; The first network element determines that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group; The link aggregation group is switched to the second link aggregation group.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum number of active links .

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the lightweight fault is a fault that causes the working bandwidth to be damaged, but can continue to transmit data.

In a second aspect, a network element is provided, including: a determining unit, a recording unit, and a switching unit,

The determining unit is configured to determine that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, wherein the first link aggregation group is a link between the first network element and the second network element. road aggregation group;

The recording unit is configured to record that a lightweight fault occurs in the first link aggregation group, and switch the first link aggregation group to a second link aggregation group, wherein the second link aggregation group is The aggregation group is a link aggregation group between the first network element and the second network element;

The switching unit is configured to, when the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, switch the second link The link aggregation group is switched to the first link aggregation group.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the network element further includes an adding unit, and the adding unit is configured to add links in the second link aggregation group to obtain the added the second link aggregation group; the determining unit is configured to determine that the increased working bandwidth of the second link aggregation group is greater than the working bandwidth of the first link aggregation group; the switching unit is configured to convert the The first link aggregation group is switched to the added second link aggregation group.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the network element further includes a deletion unit, and the deletion unit is further configured to delete the links in the first link aggregation group to obtain deletion. the reduced first link aggregation group; the determining unit is further configured to determine that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group; the switching unit It is also used for switching the deleted first link aggregation group to the second link aggregation group.

With reference to the second aspect, in a third possible implementation manner of the second aspect, the total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum number of active links .

With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the lightweight fault is a fault that causes the working bandwidth to be damaged, but can continue to transmit data.

In a third aspect, a network element is provided, comprising: a processor, a transmitter and a receiver, the processor is connected to the transmitter and the receiver respectively, wherein: the processor is configured to execute the following method:

Determine that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, wherein the first link aggregation group is the link aggregation group between the first network element and the second network element;

Record that a lightweight fault occurs in the first link aggregation group, and switch the first link aggregation group to a second link aggregation group, where the second link aggregation group is the first link aggregation group. A link aggregation group between a network element and the second network element;

When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, the second link aggregation group is switched to the other link aggregation group according to the record of the light failure of the first link aggregation group the first link aggregation group.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the processor is further configured to: increase the links in the second link aggregation group to obtain an increased second link aggregation group; determining that the working bandwidth of the added second link aggregation group is greater than the working bandwidth of the first link aggregation group; switching the first link aggregation group to the added second link aggregation group .

With reference to the third aspect, in a second possible implementation manner of the third aspect, the processor is further configured to: delete the links in the first link aggregation group to obtain the deleted first link aggregation group; determine that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group; switch the deleted first link aggregation group to the second link aggregation group Link Aggregation Group.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum number of active links .

With reference to the third aspect, in a fourth possible implementation manner of the third aspect, the lightweight fault is a fault that causes the working bandwidth to be damaged, but can continue to transmit data.

In the above solution, when a lightweight fault occurs in the first link aggregation group, the first network element records the lightweight fault, switches the first link aggregation group to the second link aggregation group, and then , when the second link aggregation group fails, the first network element can re-switch the second link aggregation group to the first link aggregation group according to the record of the lightweight failure, so that the first link aggregation group can be When the expected bandwidth is not met, it is switched to the second link aggregation group without failure. When the second link aggregation group is faulty, it is switched to the first link aggregation group again, so as to better ensure the quality of data communication.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention, which are of great significance to the art For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a binary communication system in the prior art;

2a is a schematic structural diagram of an application scenario provided by an embodiment of the present application;

FIG. 2b is a schematic structural diagram of another application scenario provided by an embodiment of the present application;

3 is a schematic flowchart of a first method for automatic protection of a link aggregation group provided by an embodiment of the present application;

4 is a schematic flowchart of a second method for automatic protection of a link aggregation group provided by an embodiment of the present application;

5 is a schematic flowchart of a third method for automatic protection of a link aggregation group provided by an embodiment of the present application;

6 is a schematic structural diagram of a device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a first network element provided by an embodiment of the present application.

Detailed ways

The technical solutions of the embodiments of the present invention can be applied to optical networks such as SDH (Synchronous Digital Hierarchy, Synchronous Digital Hierarchy)/SONET (Synchronous Optical Network, Synchronous Optical Network), or OTN (Optical Transport Network, Optical Transport Network).

Please refer to FIG. 2a, which is a schematic diagram of an application scenario disclosed by an embodiment of the present invention. In the application scenario shown in Figure 2a, data communication is performed between the first network element and the second network element through a physical medium. Wherein, the physical medium may be copper cable, optical fiber or other transmission medium.

In this embodiment of the present application, the first network element may be a packet transport network (Packet Transport Network, PTN) device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding (forwarding), quality of service (QoS), network protection, operation management and maintenance, etc. should constitute a specific limitation.

In this embodiment of the present application, the second network element may be a packet transport network (Packet Transport Network, PTN) device, for example, a router, etc., which is not specifically limited here. The second network element can implement functions such as packet forwarding (forwarding), quality of service (QoS), network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the second network element are only used for example, not should constitute a specific limitation.

In the implementation of this application, the first network element and the second network element are connected through a physical medium. Wherein, the first link aggregation group and the second link aggregation group may coexist in the physical medium between the first network element and the second network element.

In the implementation of this application, the first link aggregation group may be a working path, and the second link aggregation group may be a protection path. In normal use, a path with better communication quality can be selected as a working path, and a path with poor communication quality can be selected as a protection path.

When the normal working bandwidth of the first link aggregation group is damaged and the data communication requirements between the first network element and the second network element cannot be met, the first network element may switch the first link aggregation group to the second network element Link Aggregation Group. That is, before the switchover, data communication is performed between the first network element and the second network element through the first link aggregation group, and after the switchover, the second link aggregation group is used between the first network element and the second network element for data communication. data communication.

However, if the bandwidth of the second link aggregation group cannot meet expectations (for example, the second link aggregation group has a serious failure), although the first link aggregation group between the first network element and the second network element is only The bandwidth is damaged rather than completely inoperable, and data communication between the first network element and the second network element is still impossible.

Please refer to FIG. 2b. FIG. 2b is a schematic diagram of another application scenario disclosed by an embodiment of the present invention. In the application scenario shown in Fig. 2b, data communication is performed between the first network element and the second network element through a physical medium. In addition, data communication is performed between the first network element and the third network element through a physical medium, and the third network element is used for data communication. Data communication is performed between the network element and the second network element through a physical medium. Wherein, the physical medium may be copper cable, optical fiber or other transmission medium.

In this embodiment of the present application, the first network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In this embodiment of the present application, the second network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The second network element can implement functions such as packet forwarding, quality of service, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the second network element are only used for example and should not constitute a specific limitation.

In this embodiment of the present application, the third network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The third network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the functions of the third network element described above are only for example and should not constitute a specific limitation.

In the implementation of this application, the first network element and the second network element are connected through a physical medium. Wherein, the first link aggregation combination may exist in the physical medium between the first network element and the second network element. The second link aggregation combination may exist in the physical medium between the first network element and the third network element.

In the implementation of this application, the first link aggregation group may be a working path, and the second link aggregation group may be a protection path. In normal use, a path with better communication quality can be selected as a working path, and a path with poor communication quality can be selected as a protection path.

When the normal working bandwidth of the first link aggregation group is damaged and the data communication requirements between the first network element and the second network element cannot be met, the first network element may switch the first link aggregation group to the second network element Link Aggregation Group. That is, before the switchover, data communication is performed between the first network element and the second network element through the first link aggregation group, and after the switchover, the second link aggregation group is used between the first network element and the second network element for data communication. data communication.

However, if the bandwidth of the second link aggregation group cannot meet expectations (for example, the second link aggregation group has a serious failure), although the first link aggregation group between the first network element and the second network element is only The bandwidth is damaged rather than completely inoperable, and data communication between the first network element and the second network element is still impossible.

In order to solve the above problems, the prior art provides a method, device and system for automatic protection of a link aggregation group, which can switch to a fault-free second link aggregation when the first link aggregation group does not meet the expected bandwidth When the second link aggregation group fails, it is switched to the first link aggregation group to better ensure the quality of data communication.

As shown in FIG. 3 , an embodiment of the present application provides a schematic flowchart of a first method for automatic protection of a link aggregation group. In the embodiment of the present application, the method for automatic protection of the link aggregation group includes:

S101: The first network element determines that the working bandwidth of the first link aggregation group is less than or equal to a first bandwidth threshold, and records that a lightweight fault occurs in the first link aggregation group. The first link aggregation group is a link aggregation group between the first network element and the second network element.

In this embodiment of the present application, the first network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In this embodiment of the present application, the second network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In the implementation of this application, the first network element and the second network element are connected through a physical medium, and the physical medium may be a copper cable, an optical fiber, or other transmission medium. Wherein, the first link aggregation group and the second link aggregation group may coexist in the physical medium. The first LAG and the second LAG can coexist in the same physical medium, for example, the first LAG and the second LAG coexist in the same copper cable; the first LAG and the second LAG The two link aggregation groups may exist in different physical media, for example, the first link aggregation group may exist in copper cables, and the second link aggregation group may exist in optical fibers. It should be noted that the second link aggregation group may be directly connected to the second network element, or may be connected to the second network element through other switching devices (for example, a third network element), which is not specifically limited here.

In the implementation of this application, the first link aggregation group may be a working path, and the second link aggregation group may be a protection path. In normal use, the path with better communication quality can be selected as the working path, and the path with poor communication quality can be selected as the protection path. If the working path fails during data communication, it can be switched to the protection path to ensure the reliability of data communication.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the first link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the working bandwidth of the first link aggregation group. working bandwidth. If the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, it is determined that a light failure has occurred in the first link aggregation group.

In a specific embodiment, the first network element may obtain the total number of links a and the number i of faulty links of the first link aggregation group, respectively, so as to determine that the number of normal working links is a-i. If the number of normal working links of the first link aggregation group is less than or equal to the first number threshold, it is determined that a light failure has occurred in the first link aggregation group.

In this embodiment of the present application, a lightweight fault refers to a fault that causes the bandwidth between network devices to be damaged, but the network devices can still communicate with each other. For example, the light failure may mean that a small part of the links in the first link aggregation group are not activated, or the light failure may refer to the failure of a small part of the links in the first link aggregation group, etc. etc., which are not specifically limited here.

S102: The first network element switches the first link aggregation group to a second link aggregation group, where the second link aggregation group is the first network element and the second network element link aggregation group between.

In this embodiment of the present application, the first network element detects that a lightweight fault occurs in the first link aggregation group, causing the working bandwidth of the first link aggregation group to not meet the first bandwidth threshold, and records that a signal occurs in the first link aggregation group Deterioration failure, switch to the second link aggregation group for data communication, and send an APS protocol packet to notify the second network element that signal degradation has occurred in the first link aggregation group, and data communication needs to be performed through the second link aggregation group in the future.

S103: When the working bandwidth of the second link aggregation group is less than or equal to a second bandwidth threshold, switch the second link aggregation group according to the record of the light-weight failure of the first link aggregation group is the first link aggregation group.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the second link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the operating bandwidth of the second link aggregation group. working bandwidth. If the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, it is determined that a heavyweight fault has occurred in the second link aggregation group.

In a specific embodiment, the first network element may obtain the total number of links b and the number of faulty links j of the second link aggregation group, respectively, so as to determine that the number of normal working links is b-j. If the number of normal working links of the first link aggregation group is less than or equal to the second number threshold, it is determined that a heavyweight fault has occurred in the second link aggregation group.

In this embodiment of the present application, the heavyweight fault means that the bandwidth between network devices is severely damaged to the point that it is almost impossible to communicate normally, or communication between network devices is completely impossible. For example, the heavyweight fault may mean that most or all links in the second link aggregation group are not activated, or the heavyweight fault may refer to most or all links in the second link aggregation group A failure or the like has occurred, which is not specifically limited here.

In this embodiment of the present application, the first network element detects that a heavyweight fault occurs in the second link aggregation group, resulting in that the working bandwidth of the second link aggregation group does not meet the second bandwidth threshold, and records that a heavyweight failure occurs in the second link aggregation group. If the fault occurs, switch to the first link aggregation group again for data communication, and send an APS protocol packet to notify the second network element that a heavy fault has occurred in the second link aggregation group. communication.

In the above solution, when a lightweight fault occurs in the first link aggregation group, the first network element records the lightweight fault, switches the first link aggregation group to the second link aggregation group, and then , when the second link aggregation group fails, the first network element can re-switch the second link aggregation group to the first link aggregation group according to the record of the lightweight failure, so that the first link aggregation group can be When the expected bandwidth is not met, it is switched to a fault-free second link aggregation group, and when the second link aggregation group fails, the first link aggregation group is re-switched to better ensure service forwarding quality.

As shown in FIG. 4 , an embodiment of the present application provides a schematic flowchart of a second method for automatic protection of a link aggregation group. In the embodiment of the present application, the method for automatic protection of the link aggregation group includes:

S201: The first network element determines that the working bandwidth of the first link aggregation group is less than or equal to a first bandwidth threshold, and records that a light fault occurs in the first link aggregation group. The first link aggregation group is a link aggregation group between the first network element and the second network element.

In this embodiment of the present application, the first network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In this embodiment of the present application, the second network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In the implementation of this application, the first network element and the second network element are connected through a physical medium, and the physical medium may be a copper cable, an optical fiber, or other transmission medium. Wherein, the first link aggregation group and the second link aggregation group may coexist in the physical medium. The first LAG and the second LAG can coexist in the same physical medium, for example, the first LAG and the second LAG coexist in the same copper cable; the first LAG and the second LAG The two link aggregation groups may exist in different physical media, for example, the first link aggregation group may exist in copper cables, and the second link aggregation group may exist in optical fibers. It should be noted that the second link aggregation group may be directly connected to the second network element, or may be connected to the second network element through other switching devices (for example, a third network element), which is not specifically limited here.

In the implementation of this application, the first link aggregation group may be a working path, and the second link aggregation group may be a protection path. In normal use, the path with better communication quality can be selected as the working path, and the path with poor communication quality can be selected as the protection path. If the working path fails during data communication, it can be switched to the protection path to ensure the reliability of data communication.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the first link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the working bandwidth of the first link aggregation group. working bandwidth. If the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, it is determined that a light failure has occurred in the first link aggregation group.

In a specific embodiment, the first network element may obtain the total number of links a and the number i of faulty links of the first link aggregation group, respectively, so as to determine that the number of normal working links is a-i. If the number of normal working links of the first link aggregation group is less than or equal to the first number threshold, it is determined that a light failure has occurred in the first link aggregation group.

In this embodiment of the present application, a lightweight fault refers to a fault that causes the bandwidth between network devices to be damaged, but the network devices can still communicate with each other. For example, the light failure may mean that a small part of the links in the first link aggregation group are not activated, or the light failure may refer to the failure of a small part of the links in the first link aggregation group, etc. etc., which are not specifically limited here.

S202: The first network element switches the first link aggregation group to a second link aggregation group, where the second link aggregation group is the first network element and the second network element link aggregation group between.

In this embodiment of the present application, the first network element detects that a lightweight fault occurs in the first link aggregation group, causing the working bandwidth of the first link aggregation group to not meet the first bandwidth threshold, and records that a signal occurs in the first link aggregation group Deterioration failure, switch to the second link aggregation group for data communication, and send an APS protocol packet to notify the second network element that signal degradation has occurred in the first link aggregation group, and data communication needs to be performed through the second link aggregation group in the future.

S203: When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, switch the second link aggregation group according to the record of the light-weight failure of the first link aggregation group is the first link aggregation group, wherein the second bandwidth threshold is smaller than the first bandwidth threshold.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the second link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the operating bandwidth of the second link aggregation group. working bandwidth. If the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, it is determined that a heavyweight fault has occurred in the second link aggregation group.

In a specific embodiment, the first network element may obtain the total number of links b and the number of faulty links j of the second link aggregation group, respectively, so as to determine that the number of normal working links is b-j. If the number of normal working links of the first link aggregation group is less than or equal to the second number threshold, it is determined that a heavyweight fault has occurred in the second link aggregation group.

In this embodiment of the present application, the heavyweight fault means that the bandwidth between network devices is severely damaged to the point that it is almost impossible to communicate normally, or communication between network devices is completely impossible. For example, the heavyweight fault may mean that most or all links in the second link aggregation group are not activated, or the heavyweight fault may refer to most or all links in the second link aggregation group A failure or the like has occurred, which is not specifically limited here.

In this embodiment of the present application, the first network element detects that a heavyweight fault occurs in the second link aggregation group, resulting in that the working bandwidth of the second link aggregation group does not meet the second bandwidth threshold, and records that a heavyweight failure occurs in the second link aggregation group. If the fault occurs, switch to the first link aggregation group again for data communication, and send an APS protocol packet to notify the second network element that a heavy fault has occurred in the second link aggregation group. communication.

S204: The first network element adds links in the second link aggregation group to obtain an added second link aggregation group.

S205: The first network element determines that the working bandwidth of the added second link aggregation group is greater than the working bandwidth of the first link aggregation group.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the second link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the operating bandwidth of the second link aggregation group. working bandwidth. If the working bandwidth of the second link aggregation group is greater than the first bandwidth threshold, it is determined that the first link aggregation group needs to be switched to the second link aggregation group again.

S206: The first network element switches the first link aggregation group to the added second link aggregation group.

As shown in FIG. 5 , an embodiment of the present application provides a schematic flowchart of a third method for automatic protection of a link aggregation group. In the embodiment of the present application, the method for automatic protection of the link aggregation group includes:

S301: The first network element determines that the working bandwidth of the first link aggregation group is less than or equal to a first bandwidth threshold, and records that a lightweight fault occurs in the first link aggregation group. The first link aggregation group is a link aggregation group between the first network element and the second network element.

In this embodiment of the present application, the first network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In this embodiment of the present application, the second network element may be a packet transmission network device, for example, a router, etc., which is not specifically limited here. The first network element can implement functions such as packet forwarding, service quality, network protection, operation management and maintenance, etc. It can be understood that the above-mentioned functions of the first network element are only used for example and should not constitute a specific limitation.

In the implementation of this application, the first network element and the second network element are connected through a physical medium, and the physical medium may be a copper cable, an optical fiber, or other transmission medium. Wherein, the first link aggregation group and the second link aggregation group may coexist in the physical medium. The first LAG and the second LAG can coexist in the same physical medium, for example, the first LAG and the second LAG coexist in the same copper cable; the first LAG and the second LAG The two link aggregation groups may exist in different physical media, for example, the first link aggregation group may exist in copper cables, and the second link aggregation group may exist in optical fibers. It should be noted that the second link aggregation group may be directly connected to the second network element, or may be connected to the second network element through other switching devices (for example, a third network element), which is not specifically limited here.

In the implementation of this application, the first link aggregation group may be a working path, and the second link aggregation group may be a protection path. In normal use, the path with better communication quality can be selected as the working path, and the path with poor communication quality can be selected as the protection path. If the working path fails during data communication, it can be switched to the protection path to ensure the reliability of data communication.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the first link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the working bandwidth of the first link aggregation group. working bandwidth. If the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, it is determined that a light failure has occurred in the first link aggregation group.

In a specific embodiment, the first network element may obtain the total number of links a and the number i of faulty links of the first link aggregation group, respectively, so as to determine that the number of normal working links is a-i. If the number of normal working links of the first link aggregation group is less than or equal to the first number threshold, it is determined that a light failure has occurred in the first link aggregation group.

In this embodiment of the present application, a lightweight fault refers to a fault that causes the bandwidth between network devices to be damaged, but the network devices can still communicate with each other. For example, the light failure may mean that a small part of the links in the first link aggregation group are not activated, or the light failure may refer to the failure of a small part of the links in the first link aggregation group, etc. etc., which are not specifically limited here.

S302: The first network element switches the first link aggregation group to a second link aggregation group, where the second link aggregation group is the first network element and the second network element link aggregation group between.

In this embodiment of the present application, the first network element detects that a lightweight fault occurs in the first link aggregation group, causing the working bandwidth of the first link aggregation group to not meet the first bandwidth threshold, and records that a signal occurs in the first link aggregation group Deterioration failure, switch to the second link aggregation group for data communication, and send an APS protocol packet to notify the second network element that signal degradation has occurred in the first link aggregation group, and data communication needs to be performed through the second link aggregation group in the future.

S303: When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, switch the second link aggregation group according to the record of the light-weight failure of the first link aggregation group is the first link aggregation group, wherein the second bandwidth threshold is smaller than the first bandwidth threshold.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the second link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the operating bandwidth of the second link aggregation group. working bandwidth. If the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, it is determined that a heavyweight fault has occurred in the second link aggregation group.

In a specific embodiment, the first network element may obtain the total number of links b and the number of faulty links j of the second link aggregation group, respectively, so as to determine that the number of normal working links is b-j. If the number of normal working links of the first link aggregation group is less than or equal to the second number threshold, it is determined that a heavyweight fault has occurred in the second link aggregation group.

In this embodiment of the present application, the heavyweight fault means that the bandwidth between network devices is severely damaged to the point that it is almost impossible to communicate normally, or communication between network devices is completely impossible. For example, the heavyweight fault may mean that most or all links in the second link aggregation group are not activated, or the heavyweight fault may refer to most or all links in the second link aggregation group A failure or the like has occurred, which is not specifically limited here.

In this embodiment of the present application, the first network element detects that a heavyweight fault occurs in the second link aggregation group, resulting in that the working bandwidth of the second link aggregation group does not meet the second bandwidth threshold, and records that a heavyweight failure occurs in the second link aggregation group. If the fault occurs, switch to the first link aggregation group again for data communication, and send an APS protocol packet to notify the second network element that a heavy fault has occurred in the second link aggregation group. communication.

S304: The first network element deletes the links in the first link aggregation group to obtain the deleted first link aggregation group.

S305: The first network element determines that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group.

In this embodiment of the present application, the first network element may separately obtain the working bandwidth of each link in the first link aggregation group, and collect statistics on the working bandwidth of each link, so as to determine the working bandwidth of the first link aggregation group. working bandwidth. If the working bandwidth of the first link aggregation group is less than or equal to the second bandwidth threshold, it is determined that the first link aggregation group needs to be switched to the second link aggregation group again.

S306: The first network element switches the deleted first link aggregation group to the second link aggregation group.

Based on the same concept as the method for automatic protection of the link aggregation group shown in FIG. 3 to FIG. 5 , an embodiment of the present application further provides a first network element (as shown in FIG. 6 ), and the apparatus is used to realize the foregoing diagrams. Methods described in Examples 3-5. As shown in FIG. 6 , the first network element 30 includes: a transceiver unit 301 , a processing unit 302 and a storage unit 303 . The transceiver unit 301 , the processing unit 302 and the storage unit 303 may be connected by a bus or in other ways (in FIG. 6 , the connection by a bus is taken as an example).

The transceiver unit 301 is used to realize the content interaction between the processing unit 302 and other units or network elements. Specifically, the transceiver unit 301 may be a communication interface of the device, a transceiver circuit or a transceiver, or a transceiver. The transceiver unit 301 may also be a communication interface or a transceiver circuit of the processing unit 302. Optionally, the transceiver unit 301 may be a transceiver chip.

The processing unit 302 is used to realize the processing of data by the device. The processing unit 302 may be a processing circuit or a processor. The processor may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP), or a combination of CPU and NP. The processor 302 described above may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The processor may further include a hardware chip. The above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (Generic Array Logic, GAL) or any combination thereof. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processing unit 302 or the instructions in the form of software. The processing unit 302 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.

The storage unit 303 is used to store computer instructions executed by the processing unit 302 . The storage unit 303 may be a storage circuit or a memory. The memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable Except programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache.

The processing unit 302 is configured to call the program code stored in the storage unit 303, and execute the following steps:

Determine that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, wherein the first link aggregation group is the link aggregation group between the first network element and the second network element;

Record that a lightweight fault occurs in the first link aggregation group, and switch the first link aggregation group to a second link aggregation group, where the second link aggregation group is the first link aggregation group. A link aggregation group between a network element and the second network element;

When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, the second link aggregation group is switched to the other link aggregation group according to the record of the light failure of the first link aggregation group the first link aggregation group.

Optionally, adding links in the second link aggregation group to obtain an added second link aggregation group; determining that the working bandwidth of the added second link aggregation group is greater than that of the first link Working bandwidth of the aggregation group; switching the first link aggregation group to the added second link aggregation group.

Optionally, delete the links in the first link aggregation group to obtain the deleted first link aggregation group; determine that the working bandwidth of the deleted first link aggregation group is smaller than the first link aggregation group after the deletion. Two working bandwidths of the link aggregation group; switching the deleted first link aggregation group to the second link aggregation group.

Optionally, the total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum number of active links.

Optionally, the lightweight fault is a fault that causes the working bandwidth to be damaged but can continue to transmit data.

It should be noted that, for the execution steps of the processing unit 302 and other technical features involved in the processing unit 302, reference may also be made to the relevant content of the first network element described in the method embodiments in FIGS. 3-5, and details are not repeated here.

Based on the same concept as the method for automatic protection of the link aggregation group shown in FIG. 3 to FIG. 5 , an embodiment of the present application further provides a first network element (as shown in FIG. 7 ), and the apparatus is used to realize the foregoing diagrams. Methods described in Examples 3-5. As shown in FIG. 7 , the first network element includes a determining unit 401 , a recording unit 402 and a switching unit 403 .

The determining unit 401 is configured to determine that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, where the first link aggregation group is the connection between the first network element and the second network element. link aggregation group;

The recording unit 402 is configured to record that a lightweight fault occurs in the first link aggregation group, and switch the first link aggregation group to a second link aggregation group, wherein the second link aggregation group is The link aggregation group is a link aggregation group between the first network element and the second network element;

The switching unit 403 is configured to, when the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, convert the second link aggregation group to The link aggregation group is switched to the first link aggregation group.

It should be noted that those skilled in the art can clearly know the implementation method of each functional module included in the first network element through the detailed description of the foregoing embodiments in FIGS. .

In the several embodiments provided in this application, it should be understood that the disclosed system, terminal and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.

The units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solutions in the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or a part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed by the present invention. Modifications or substitutions should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (15)

1. A method for automatically protecting a link aggregation group, comprising: The first network element determines that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, where the first link aggregation group is the link aggregation between the first network element and the second network element Group; The first network element records that a lightweight fault has occurred in the first link aggregation group, and switches the first link aggregation group to a second link aggregation group, where the second link aggregation group is The aggregation group is a link aggregation group between the first network element and the second network element; When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, the second link aggregation group is switched to the other link aggregation group according to the record of the light failure of the first link aggregation group the first link aggregation group. 2. The method according to claim 1, wherein the method further comprises: adding, by the first network element, links in the second link aggregation group to obtain an added second link aggregation group; The first network element determines that the increased working bandwidth of the second link aggregation group is greater than the working bandwidth of the first link aggregation group; The first network element switches the first link aggregation group to the added second link aggregation group. 3. The method according to claim 1 or 2, wherein the method further comprises: The first network element deletes the links in the first link aggregation group to obtain the deleted first link aggregation group; The first network element determines that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group; The first network element switches the deleted first link aggregation group to the second link aggregation group. 4. The method according to any one of claims 1 to 3, wherein the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, comprising: The total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum number of active links. 5 . The method according to claim 1 , wherein the lightweight fault is a fault that causes the working bandwidth to be damaged but can continue to transmit data. 6 . 6. A network element, comprising: a determining unit, a recording unit and a switching unit, The determining unit is configured to determine that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, where the first link aggregation group is a link between the first network element and the second network element. road aggregation group; The recording unit is configured to record that a lightweight fault occurs in the first link aggregation group, and switch the first link aggregation group to a second link aggregation group, wherein the second link aggregation group is The aggregation group is a link aggregation group between the first network element and the second network element; The switching unit is configured to, when the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, switch the second link The link aggregation group is switched to the first link aggregation group. 7. The network element according to claim 6, wherein the network element further comprises an adding unit, The adding unit is configured to add links in the second link aggregation group to obtain the added second link aggregation group; The determining unit is configured to determine that the increased working bandwidth of the second link aggregation group is greater than the working bandwidth of the first link aggregation group; The switching unit is configured to switch the first link aggregation group to the added second link aggregation group. 8. The network element according to claim 6 or 7, wherein the network element further comprises a deletion unit, The deletion unit is further configured to delete the links in the first link aggregation group to obtain the deleted first link aggregation group; The determining unit is further configured to determine that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group; The switching unit is further configured to switch the deleted first link aggregation group to the second link aggregation group. 9 . The network element according to claim 6 , wherein the total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum active link. 10 . number of roads. 10 . The network element according to claim 6 , wherein the lightweight fault is a fault that causes damage to the working bandwidth but can continue to transmit data. 11 . 11. A network element, comprising: a processor, a transmitter and a receiver, the processor is respectively connected to the transmitter and the receiver, wherein: the processor is configured to execute the following method: determining that the working bandwidth of the first link aggregation group is less than or equal to the first bandwidth threshold, wherein the first link aggregation group is a link aggregation group between the first network element and the second network element; Record that a lightweight fault occurs in the first link aggregation group, and switch the first link aggregation group to a second link aggregation group, where the second link aggregation group is the first link aggregation group. A link aggregation group between a network element and the second network element; When the working bandwidth of the second link aggregation group is less than or equal to the second bandwidth threshold, the second link aggregation group is switched to the other link aggregation group according to the record of the light failure of the first link aggregation group the first link aggregation group. 12. The network element according to claim 11, wherein the processor is further configured to: adding links in the second link aggregation group to obtain the added second link aggregation group; determining that the increased working bandwidth of the second link aggregation group is greater than the working bandwidth of the first link aggregation group; The first link aggregation group is switched to the added second link aggregation group. 13. The network element according to claim 11 or 12, wherein the processor is further configured to: deleting the links in the first link aggregation group to obtain the deleted first link aggregation group; determining that the working bandwidth of the deleted first link aggregation group is smaller than the working bandwidth of the second link aggregation group; Switching the deleted first link aggregation group to the second link aggregation group. The network element according to any one of claims 11 to 13, wherein the total number of aggregated links in the first link aggregation group minus the number of faulty links is less than or equal to the minimum active link number of roads. 15 . The network element according to claim 11 , wherein the lightweight fault is a fault that causes damage to the working bandwidth but can continue to transmit data. 16 .