CN103546316B - A kind of method and device for transmitting OAM message - Google Patents

Abstract

The invention discloses a method for transmitting OAM messages, which is used to provide a method for implementing OAM at the client layer under the double-homing scenario of the server layer. The method includes: the MEP in the virtual home MEP determines whether the MEP is the master node; when the MEP determines that the MEP is the master node, generates and sends the first OAM message to the receiving end; When the MEP is not the master node, it is forbidden to generate the first OAM message; wherein, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same. The invention also discloses a device for transmitting OAM messages.

Description

A method and device for transmitting OAM messages

technical field

The invention relates to the field of communication technology, in particular to a method and device for transmitting OAM messages.

Background technique

In a PTN (Packet Transport Network, packet transport network) network, MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) is a fast data packet switching and routing system based on label switching, which can be used to realize fast forwarding of packet services. A packet network usually adopts a dual-homing method. As shown in Figure 1, a service connection or channel is established between network element A, network element B, and network element C. When network element B is valid, network element A can transmit services through network element B. , when network element B fails, network element A can transmit services through network element C. Therefore, under normal circumstances, only services are transmitted between A and B, and the channel between network elements A and C can be regarded as the protection path of the working channel between network elements A and B. Dual-homing protection is a protection scheme for services when the landing node fails.

In the dual-homing network shown in Figure 1, for example, NE A, NE B, and NE C are all MEPs (Maintenance Entity Group End Point, the endpoint of the maintenance entity group), then NE A, NE B, and NE Element C needs to exchange OAM (operation administration and maintenance, operation, management and maintenance) packets. According to the existing OAM processing model, network element A will receive two OAM packets from network element B and network element C respectively.

Generally, one network element runs only one MEP, and for network element A receiving two OAM messages, an abnormality will be reported and an alarm will be reported, and there is no solution for this in the prior art.

Contents of the invention

Embodiments of the present invention provide a method and device for transmitting OAM messages, which are used to solve the technical problem in the prior art that network elements report abnormal reports and alarms due to receiving too many messages.

A first aspect of the present invention provides a method for transmitting an OAM message, including:

The MEP in the virtual home MEP determines whether the MEP is the master node;

The MEP generates and sends a first OAM message to the receiving end when determining that the MEP is the master node;

When the MEP determines that the MEP is not the master node, prohibiting the generation of the first OAM message;

Wherein, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.

With reference to the first aspect, in a first possible implementation manner, before or after the MEP in the virtual home MEP determines whether the MEP is the master node, the method further includes: receiving the second OAM message from the receiving end.

With reference to the first possible implementation, in the second possible implementation, after the MEP in the virtual home MEP determines whether the MEP is the master node and receives the second OAM message, the method further includes:

When determining that the MEP is not the master node, the MEP sends the second OAM message to the master node in the virtual home MEP.

With reference to the first possible implementation manner, in the third possible implementation manner, after the MEP in the virtual home MEP determines whether the MEP is the master node and receives the second OAM message, it further includes: The MEP processes the second OAM message when determining that the MEP is the master node.

With reference to the first aspect or any possible implementation manner in the first possible implementation manner to the third possible implementation manner, in a fourth possible implementation manner, the virtual home MEP has and only A master node; the method further includes: when a preset condition is met, the MEP performs a master-standby switchover with another MEP.

A second aspect of the present invention provides a device for transmitting OAM messages, and the device is applied to a MEP in a virtual home MEP; including:

A determining module, configured to determine whether the MEP is a master node;

An operation module, configured to generate and send a first OAM message to the receiving end when it is determined that the MEP is a master node, and prohibit generating the first OAM message when it is determined that the MEP is not a master node; wherein , the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.

With reference to the second aspect, in a first possible implementation manner, the apparatus further includes a receiving module, configured to receive the second OAM packet from the receiving end.

With reference to the first possible implementation manner, in a second possible implementation manner, the operation module is further configured to send the second OAM message to the virtual Belongs to the master node in the MEP.

With reference to the first possible implementation manner, in a third possible implementation manner, the apparatus further includes a processing module configured to process the second OAM message when the MEP is determined to be the master node.

With reference to the second aspect or any possible implementation manner in the first possible implementation manner to the third possible implementation manner, in a fourth possible implementation manner, the virtual home MEP has and only A master node; the device also includes a switchover module, configured to perform master-standby switchover with another MEP when a preset condition is met.

In the embodiment of the present invention, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same, which is equivalent to virtualizing at least two MEPs into one MEP, and the virtual MEP is regarded as one MEP externally. In the virtual MEP, only the master node will generate and send an OAM message to the receiving end, while the slave node will not generate an OAM message, let alone send an OAM message to the receiving end, therefore, The virtual MEP will only send one copy of the first OAM message to the receiving end, and two MEPs will not send two copies of the OAM message to the receiving end as in the prior art. The receiving end of an OAM message obviously does not report an abnormality and report an alarm as in the prior art, so as to ensure the normal operation of each network element.

Description of drawings

FIG. 1 is a schematic diagram of a dual-homing network in the prior art;

Fig. 2 is the method for transmitting OAM message in the embodiment of the present invention;

FIG. 3 is a schematic diagram of a transmission channel of an OAM message in an embodiment of the present invention;

FIG. 4A is a structural diagram of an apparatus for transmitting an OAM message in an embodiment of the present invention;

FIG. 4B is a structural diagram of an apparatus for transmitting an OAM message in an embodiment of the present invention;

FIG. 5 is a structural diagram of an apparatus for transmitting an OAM packet in an embodiment of the present invention.

detailed description

An embodiment of the present invention provides a method for transmitting an OAM message. The method may include: the MEP in the virtual home MEP determines whether the MEP is the master node; when the MEP determines that the MEP is the master node, generates and Sending a first OAM message to the receiving end; when the MEP determines that the MEP is not a master node, prohibiting the generation of the first OAM message; wherein, the virtual home MEP includes at least two MEPs, and the attribute of each MEP The parameters are the same.

In the embodiment of the present invention, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same, which is equivalent to virtualizing at least two MEPs into one MEP, and the virtual MEP is regarded as one MEP externally. In the virtual MEP, only the master node will generate and send an OAM message to the receiving end, while the slave node will not generate an OAM message, let alone send an OAM message to the receiving end, therefore, The virtual MEP will only send one copy of the first OAM message to the receiving end, and two MEPs will not send two copies of the OAM message to the receiving end as in the prior art. The receiving end of an OAM message obviously does not report an abnormality and report an alarm as in the prior art, so as to ensure the normal operation of each network element.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The technology described in this article can be used in various communication systems, such as current 2G, 3G communication systems and next-generation communication systems, such as Global System for Mobile Communications (GSM, Global System for Mobile communications), Code Division Multiple Access (CDMA, Code Division Multiple Access) system, Time Division Multiple Access (TDMA, Time Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access Wireless), Frequency Division Multiple Access (FDMA, Frequency Division Multiple Addressing) system, Orthogonal Frequency Division Multiple Access OFDMA (Orthogonal Frequency-Division Multiple Access) system, single-carrier FDMA (SC-FDMA) system, general packet radio service (GPRS, General Packet Radio Service) system, long-term evolution (LTE, Long Term Evolution) system, PTN network system, router network system, MSTP (Multi-Service Transmission Platform, multi-service transmission platform) network system, and other such communication systems.

The OAM involved in this article can be MPLS-TP (Multi-Protocol Label Switching Transport Profile, Multi-Protocol Label Switching Transmission Subset) OAM, MPLS OAM, ETH (Ethernet, Ethernet) OAM, and other such OAM.

Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Embodiment one

Referring to FIG. 2, an embodiment of the present invention provides a method for transmitting an OAM message, and the main flow of the method is as follows:

Step 201: The MEP in the virtual home MEP determines whether the MEP is the master node. Wherein, when it is determined that the MEP is the master node, that is, when the determination result is Yes, step 202 is performed; when it is determined that the MEP is not the master node, that is, when the determination result is No, step 203 is performed.

Please refer to FIG. 3 , which is a schematic diagram of a transmission channel of an OAM message. 2 and 3 in FIG. 3 represent one MEP respectively, and these two MEPs form the virtual home MEP, that is, in FIG. 3 , the virtual home MEP includes two MEPs as an example. However, the virtual home MEP in the embodiment of the present invention is not limited to consist of only two MEPs, and may include multiple MEPs. 2 and 3 are inside the dashed box in FIG. 3 , indicating that 2 and 3 form the virtual home MEP. It can be seen from FIG. 3 that there is a connection path between 2 and 3, and 2 and 3 can communicate through the connection path.

1 in FIG. 3 represents a MEP, and for the convenience of description in this embodiment of the present invention, 1 may be referred to as a receiving end. 1 does not belong to the virtual home MEP.

For example, 1 can be connected to the first network side device, both 2 and 3 can be connected to the second network side device, for example, the first network side device can be a base station, for example, the second network side device can be an RNC (Radio NetworkController, wireless network controller), not shown in FIG. 3 .

Specifically, in the embodiment of the present invention, MEP2 and MEP3 shown in FIG. 3 may be two nodes in the network, and the same attribute parameters may be set for MEP2 and MEP3 first, which is equivalent to setting the MEP2 and the MEP3 is set as the virtual home MEP. For other network elements in the network, the virtual home MEP is one MEP, and no matter how many MEPs are included in the virtual home MEP, it appears as one MEP to the outside. Appearing as a MEP to the outside mainly means that, for the receiving end, only one virtual belonging MEP can be seen.

In the embodiment of the present invention, if the virtual home MEP includes only two MEPs, the two virtual home MEPs may also be called virtual MEP dual-homing nodes.

In the embodiment of the present invention, the attribute parameters of a MEP may include but not limited to MEG ID (maintenance entity group identity authentication), MEP ID (endpoint identity authentication of maintenance entity group), MAC Address (Media Access ControlAddress, media access control address ),wait.

Preferably, in the embodiment of the present invention, before or after the MEP in the virtual home MEP determines whether the MEP is the master node, the MEP may also receive the second OAM message from the receiving end.

If the second OAM message is received before determining whether the MEP is a master node, the MEP may continue to determine whether the MEP is a master node.

If the second OAM message is received after determining whether the MEP is the master node, the MEP may not need to determine whether the MEP is the master node because it has previously determined whether the MEP is the master node, or the MEP may also Determine again whether the MEP is the master node.

Further, in the embodiment of the present invention, after the MEP determines whether the MEP is the master node and receives the second OAM message, if the MEP determines that the MEP is the master node, it may directly The second OAM message is processed.

Further, in the embodiment of the present invention, after the MEP determines whether the MEP is the master node and receives the second OAM message, if the MEP determines that the MEP is not the master node, the MEP may Send the second OAM message to the master node in the virtual home MEP, and the master node processes the second OAM message. In the embodiment of the present invention, there is a connection path between the master node and the slave node in the virtual home MEP, and the master node and the slave node can communicate through the connection path.

Step 202: When the MEP determines that the MEP is the master node, it generates and sends a first OAM message to the receiving end.

In this embodiment of the present invention, if the MEP determines that the MEP is the master node, the MEP may generate and send the first OAM message to the receiving end.

In this embodiment of the present invention, the master node in the virtual home MEP may generate the first OAM message, and may send the first OAM message to the receiving end, and the receiving end may send the first OAM message to the receiving end. An OAM packet is processed. Then, one of the virtual home MEPs may first determine whether the MEP is the master node, and if it is determined that the MEP is the master node, the MEP may generate the first OAM message.

Step 203: When the MEP determines that the MEP is not the primary node, prohibiting the generation of the first OAM message; wherein, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.

In this embodiment of the present invention, if the MEP determines that the MEP is not the master node, generation of the first OAM message is prohibited. That is, in the embodiment of the present invention, in the virtual home MEP, only the master node will generate an OAM message, and send the generated OAM message to the receiving end, while the slave node will not generate an OAM message, and more An OAM message is not sent to the receiving end, thereby ensuring that the receiving end only receives one OAM message, effectively avoiding an abnormal alarm at the receiving end.

In this embodiment of the present invention, the receiving end may generate the second OAM message, and may send the second OAM message to the virtual home MEP, and one of the virtual home MEPs receives the After the second OAM message, it may be first judged whether the MEP is the master node, if it is determined that the MEP is the master node, then the MEP may directly process the second OAM message, if it is determined that the MEP is the master node If the MEP is not the master node, the MEP may send the second OAM message to the master node, and the master node processes the second OAM message.

There may be no sequential relationship between the two methods to be protected in the embodiment of the present invention.

Further, in an embodiment of the present invention, there is one and only one master node in the virtual home MEP. The method may further include: when a preset condition is satisfied, an active-standby switchover occurs between the MEP and another MEP.

If the MEP is the master node, when the preset condition is satisfied, the MEP can complete master-standby switchover with a slave node.

If the MEP is a slave node, when the preset condition is satisfied, the MEP can complete master-standby switchover with a master node.

Preferably, if it is determined that the MEP is not the master node, the MEP can monitor whether the master node is normal in real time, periodically or when triggered, and if the MEP determines that the master node is abnormal, the MEP can send the MEP Set as master node.

At this time, the preset condition is: the MEP determines that the master node is abnormal.

Preferably, if it is determined that the MEP is not the master node, the MEP can monitor whether the connection path with the master node is normal in real time, at regular intervals or when triggered, and if the MEP determines that the connection path is abnormal, then The MEP may set the MEP as the master node.

At this time, the preset condition is: the MEP determines that the connection path is abnormal.

Preferably, if it is determined that the MEP is the master node, the MEP can monitor the MEP in real time, at regular intervals or when triggered, and if the monitoring determines that the MEP is abnormal, the MEP can report to the virtual home MEP A slave node in sends a message to set the slave node as the master node.

At this time, the preset condition is: the MEP determines that the MEP is abnormal.

Preferably, the virtual home MEP can receive a switching instruction for implementing master-standby switchover, and after receiving the switchover command, the master node and a slave node in the virtual home MEP can complete the master-standby switchover.

At this time, the preset condition is: the MEP receives the switching instruction for implementing active/standby switching.

Embodiment two

Referring to FIG. 4A , an embodiment of the present invention provides an apparatus for transmitting OAM packets, and the apparatus can be applied to one MEP in a virtual home MEP. Preferably, the device may be the MEP itself. The apparatus may include a determination module 401 and an operation module 402 .

The determining module 401 may be used to determine whether the MEP is the master node.

The operation module 402 may be configured to generate and send a first OAM message to the receiving end after the MEP is determined to be the master node; wherein, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.

Optionally, the device may further include a receiving module.

The receiving module may be configured to receive the second OAM message from the receiving end.

Optionally, the operation module 402 may also be configured to send the second OAM message to the master node in the virtual home MEP after determining that the MEP is not the master node.

Optionally, the device may further include a processing module.

The processing module may be configured to process the second OAM message.

Optionally, the device may further include a switching module.

In the embodiment of the present invention, there is one and only one master node in the virtual home MEP, and the switchover module can be used to perform master-standby switchover with another MEP when a preset condition is satisfied.

Please refer to FIG. 4B , which is a structural diagram when the device includes a determining module 401 , an operating module 402 , a receiving module 403 , a processing module 404 and a switching module 405 .

Wherein, in addition to the determining module 401 and the operating module 402, the device may not include the receiving module 403, the processing module 404, and the switching module 405, or may include parts of the receiving module 403, the processing module 404, and the switching module 405 Modules or all modules, the details may vary according to the actual situation.

Embodiment Three

The embodiment of the present invention also provides an apparatus 500 for transmitting an OAM packet. In the embodiment of the present invention, the apparatus 500 can be applied to one MEP in the virtual home MEP. Preferably, the device may be the MEP itself.

As shown in FIG. 5 , the device 500 includes: a bus 540; and a processor 510, a memory 520, and an interface 530 connected to the bus 540, wherein the interface 530 is used to send the first OAM message to the receiving end; the memory 920 uses For storing instructions, the processor 910 is used to execute the instructions to determine whether the MEP is the master node; the processor 910 executes the instructions to generate the first OAM when the MEP is determined to be the master node message; the processor 910 executing the instruction is further configured to forbid generating the first OAM message when it is determined that the MEP is not the master node.

In this embodiment of the present invention, optionally, the interface 530 is configured to receive the second OAM packet from the receiving end.

In this embodiment of the present invention, optionally, the interface 530 is configured to send the second OAM message to the virtual home MEP when the processor 910 determines that the MEP is not the master node by executing the instruction master node in .

In this embodiment of the present invention, optionally, the processor 910 executes the instruction and is further configured to process the second OAM packet when the MEP is determined to be the master node.

In this embodiment of the present invention, there is one and only one master node in the virtual home MEP; optionally, the processor 910 executes the instruction and is also used to, when the preset condition is satisfied, the MEP and another MEP Active/standby switchover.

Therefore, the apparatus 500 for transmitting an OAM message in the embodiment of the present invention can ensure Only one copy of the first OAM message is sent to the receiving end, and two MEPs do not need to send two copies of the OAM message to the receiving end as in the prior art. However, for the receiving end that only receives one OAM message, it is obvious that an abnormality will not be reported to an alarm as in the prior art, so as to ensure the normal operation of each network element.

An embodiment of the present invention provides a method for transmitting an OAM message. The method may include: the MEP in the virtual home MEP determines whether the MEP is the master node; when the MEP determines that the MEP is the master node, generates and Sending a first OAM message to the receiving end; when the MEP determines that the MEP is not a master node, prohibiting the generation of the first OAM message; wherein, the virtual home MEP includes at least two MEPs, and the attribute of each MEP The parameters are the same.

In the embodiment of the present invention, the virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same, which is equivalent to virtualizing at least two MEPs into one MEP, and the virtual MEP is regarded as one MEP externally. In the virtual MEP, only the master node will generate and send an OAM message to the receiving end, while the slave node will not generate an OAM message, and will not send an OAM message to the receiving end. Therefore, The virtual MEP will only send one copy of the first OAM message to the receiving end, and two MEPs will not send two copies of the OAM message to the receiving end as in the prior art. The receiving end of an OAM message obviously does not report an abnormality and report an alarm as in the prior art, so as to ensure the normal operation of each network element.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to needs. The internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, 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.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution 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 for enabling a computer device (which may be a personal computer, server, or network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile 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. .

As mentioned above, the above embodiments are only used to introduce the technical solutions of the present application in detail, but the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention, and should not be construed as limiting the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of method for transmitting OAM message, it is characterised in that including：

MEP in Virtual Home MEP determines whether the MEP is host node；

The MEP is generated when it is determined that the MEP is host node and is sent the first OAM message to receiving terminal；

The MEP forbids generation first OAM message when it is determined that the MEP is not host node；

Wherein, Virtual Home MEP includes at least two MEP, and each MEP property parameters are identical.

2. the method as described in claim 1, it is characterised in that the MEP in Virtual Home MEP determine the MEP whether be Before or after host node, in addition to：Receive the second OAM message from the receiving terminal.

3. method as claimed in claim 2, it is characterised in that the MEP in Virtual Home MEP determine the MEP whether be After host node and reception second OAM message, in addition to：

Second OAM message is sent in the Virtual Home MEP by the MEP when it is determined that the MEP is not host node Host node.

4. method as claimed in claim 2, it is characterised in that the MEP in Virtual Home MEP determine the MEP whether be After host node and reception second OAM message, in addition to：

The MEP is handled second OAM message when it is determined that the MEP is host node.

5. the method as described in any claim of Claims 1 to 4, it is characterised in that have in the Virtual Home MEP and only one Individual host node；Methods described also includes：When meeting preparatory condition, masterslave switchover occurs for the MEP and another MEP.

6. a kind of device for transmitting OAM message, it is characterised in that described device is applied to the MEP in Virtual Home MEP；Including：

Determining module, for determining whether the MEP is host node；

Operation module, for when it is determined that the MEP is host node, generating and sending the first OAM message to receiving terminal, and true When the fixed MEP is not host node, forbid generation first OAM message；Wherein, Virtual Home MEP includes at least two MEP, each MEP property parameters are identical.

7. device as claimed in claim 6, it is characterised in that described device also includes receiving module, institute is come from for receiving State the second OAM message of receiving terminal.

8. device as claimed in claim 7, it is characterised in that the operation module be additionally operable to it is determined that the MEP not based on During node, second OAM message is sent to the host node in the Virtual Home MEP.

9. device as claimed in claim 7, it is characterised in that described device also includes processing module, for it is determined that described When MEP is host node, second OAM message is handled.

10. the device as described in any claims of claim 6-9, it is characterised in that have in the Virtual Home MEP and only one Individual host node；Described device also includes switching module, for when meeting preparatory condition, occurring masterslave switchover with another MEP.