WO2015051696A1

WO2015051696A1 - Method and apparatus for transmitting oam packet

Info

Publication number: WO2015051696A1
Application number: PCT/CN2014/087062
Authority: WO
Inventors: 蔡亨光; 张慧勇
Original assignee: 华为技术有限公司
Priority date: 2013-10-12
Filing date: 2014-09-22
Publication date: 2015-04-16
Also published as: CN103546316A; CN103546316B

Abstract

Disclosed is a method for transmitting an OAM packet, used for proving a method for implementing client layer OAM for a server layer in a dual-homing scenario. The method comprises: an MEP in a virtual home MEP determining whether the MEP is a master node; when determining that the MEP is a master node, the MEP generating a first OAM packet and sending the first OAM packet to a receive end; and when determining that the MEP is not a master node, the MEP forbidding generation of the first OAM packet, the virtual home MEP comprising at least two MEPs, and attribute parameters of the MEPs being the same. Further disclosed is an apparatus for transmitting an OAM packet.

Description

Method and device for transmitting OAM message

This application claims priority to Chinese Patent Application No. CN201310475699.2, entitled "A Method and Apparatus for Transmitting OAM Messages", filed on October 12, 2013, the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting an OAM message.

Background technique

In the PTN (Packet Transport Network) network, MPLS (Multi-Protocol Label Switching) is a fast packet switching and routing system based on label switching. It can be used to implement fast forwarding of packet services. . The packet network usually adopts the dual-homing mode. As shown in Figure 1, the network element A and the network elements B and C respectively establish a service connection or channel. When the network element B is valid, the network element A can perform service transmission through the network element B. When the network element B fails, the network element A can perform service transmission through the network element C. Therefore, only the traffic between A and B is normally transmitted. The channel between NEs A and C can be considered as the protection path of the working channel between networks A and B. Dual-homing protection is a protection scheme for services when a landing node fails.

In the dual-homing network shown in FIG. 1, for example, the network element A, the network element B, and the network element C are MEPs (Maintenance Entity Group End Point), then the network element A and the network element B, The network element C needs to communicate with the OAM (operation administration and maintenance) message. According to the existing OAM processing model, the network element A receives two OAM packets, which are from the network element B and the network element C.

Under normal circumstances, one network element will only run one MEP, then two copies of OAM will be received. For the network element A of the text, there will be an abnormal report alarm, and there is no solution for this in the prior art.

Summary of the invention

The embodiment of the invention provides a method and a device for transmitting an OAM message, which are used to solve the technical problem that the network element in the prior art may report an alarm abnormally due to an over-received message.

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 a master node;

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

The MEP prohibits generating the first OAM packet when determining that the MEP is not the master node;

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 the MEP in the virtual home MEP determines whether the MEP is a master node, the method further includes: receiving a second OAM packet from the receiving end.

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

The MEP sends the second OAM packet to the primary node in the virtual home MEP when determining that the MEP is not the master node.

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

Combining the first aspect or the first possible implementation to the third possible implementation In a fourth possible implementation manner, the virtual home MEP has one and only one master node; and the method further includes: when the preset condition is met, the MEP is An active/standby switchover takes place on another MEP.

A second aspect of the present invention provides an apparatus for transmitting an OAM message, where the apparatus is applied to an MEP in a virtual home MEP;

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

The operation module is configured to: when the MEP is determined to be the primary node, generate and send the first OAM packet to the receiving end, and when the determining that the MEP is not the primary node, the first OAM packet is prohibited from being generated; 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, the apparatus further includes a receiving module, configured to receive a 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: when determining that the MEP is not the master node, send the second OAM packet to the virtual The primary node in the home MEP.

With reference to the first possible implementation manner, in a third possible implementation manner, the device further includes a processing module, configured to process the second OAM packet when determining that the MEP is a master node.

With reference to the second aspect, or any one of the first possible implementation to the third possible implementation, in the fourth possible implementation, the virtual home MEP has only one A master node; the device further includes a switching module, configured to perform an active/standby switchover with another MEP when the preset condition is met.

In the embodiment of the present invention, the virtual home MEP includes at least two MEPs, and the same attribute parameter of each MEP is equivalent to virtualizing at least two MEPs into one MEP, and the virtual MEP is regarded as a MEP. In the virtual MEP, only the master node generates and sends an OAM packet to the receiving end, and the slave node does not generate an OAM packet. The OAM packet is not sent to the receiving end. Therefore, the virtual MEP sends only one first OAM packet to the receiving end, and the two MEPs do not need to be the same as in the prior art. The receiving end sends two OAM packets, and the receiving end that receives only one OAM packet obviously does not report an abnormal alarm as in the prior art, and ensures normal operation of each network element.

DRAWINGS

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

2 is a method for transmitting an OAM packet according to an embodiment of the present invention;

3 is a schematic diagram of a transmission channel of an OAM packet according to an embodiment of the present invention;

4A is a structural diagram of an apparatus for transmitting an OAM message according to an embodiment of the present invention;

4B is a structural diagram of an apparatus for transmitting an OAM message according to an embodiment of the present invention;

FIG. 5 is a structural diagram of an apparatus for transmitting an OAM message according to an embodiment of the present invention.

detailed description

An embodiment of the present invention provides a method for transmitting an OAM packet, where the method may include: determining, by the MEP in the virtual home MEP, whether the MEP is a master node; and when the MEP determines that the MEP is a master node, generating Sending a first OAM packet to the receiving end; the MEP prohibits generating the first OAM packet when determining that the MEP is not the master node; wherein the virtual home MEP includes at least two MEPs, and attributes 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 same attribute parameter of each MEP is equivalent to virtualizing at least two MEPs into one MEP, and the virtual MEP is regarded as a MEP. In the virtual MEP, only the master node generates and sends an OAM packet to the receiving end, and the slave node does not generate an OAM packet, and does not send an OAM packet to the receiving end. The virtual MEP sends only one copy of the first OAM message to the receiving end, and the two MEPs do not send two OAM messages to the receiving end as in the prior art, but only one is received. The receiving end of the OAM message, Obviously, there will be no abnormal alarms as in the prior art to ensure the normal operation of each network element.

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The techniques described herein can be used in a variety of communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA, Code Division Multiple). Access) system, Time Division Multiple Access (TDMA) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency OFDM (Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, PTN network system, router network system, MSTP (Multi-Service Transmission Platform) network system, and other such communication systems.

The OAMs referred to herein may be MPLS-TP (Multi-Protocol Label Switching Transport Profile) OAM, MPLS OAM, ETH (Ethernet, Ethernet) OAM, and other such OAM.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Embodiment 1

Referring to FIG. 2, an embodiment of the present invention provides a method for transmitting an OAM packet, and the main processes of the method are as follows:

Step 201: The MEP in the virtual home MEP determines whether the MEP is a master node. When it is determined that the MEP is the master node, that is, the determination result is yes, step 202 is performed. When it is determined that the MEP is not the master node, that is, if 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 packet. 2 and 3 in FIG. 3 respectively represent one MEP, and the two MEPs constitute the virtual home MEP, that is, FIG. 3 is an example in which two MEPs are included in the virtual home MEP. However, the virtual home MEP in the embodiment of the present invention is not limited to being composed of only two MEPs, and may include multiple MEPs. The dotted boxes in Fig. 3 are 2 and 3, indicating that 2 and 3 constitute the virtual home MEP. As can be seen from Figure 3, there is a connection path between 2 and 3 through which the 2 and 3 can communicate.

1 in FIG. 3 denotes a MEP. For the convenience of description in the 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 may be connected to the first network side device, and both 2 and 3 may be connected to the second network side device. For example, the first network side device may be a base station, for example, the second network side device may be an RNC (Radio). Network Controller, Radio Network Controller), not shown in FIG.

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 parameter may be set for MEP2 and MEP3 first, which is equivalent to the MEP2 and the MEP3 is set to the virtual home MEP. For the other network elements in the network, the virtual home MEP is an MEP, and the MEP is externally presented as one MEP regardless of how many MEPs are included in the virtual home MEP. Externally presented as a MEP, mainly means that for the receiving end, only one virtual home MEP can be seen.

In the embodiment of the present invention, if only two MEPs are included in the virtual home MEP, the two virtual home MEPs may also be referred to as virtual MEP dual-homing nodes.

In the embodiment of the present invention, an attribute parameter of an MEP may include, but is not limited to, a MEG ID (maintenance entity group identity authentication), a MEP ID (endpoint identity authentication of a maintenance entity group), and a MAC Address (Media Access Control Address). Address), and so on.

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

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

If the second OAM packet is received after determining whether the MEP is the master node, the MEP may not need to determine because the MEP is determined to be the primary node, or the MEP may also It is again determined whether the MEP is a master node.

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

Further, in the embodiment of the present invention, after the MEP determines whether the MEP is a master node, and after receiving the second OAM packet, if the MEP determines that the MEP is not a master node, the MEP may The second OAM packet is sent to the primary node in the virtual home MEP, and the second OAM packet is processed by the primary node. In the embodiment of the present invention, the primary node and the secondary node in the virtual home MEP have a connection path through which the master node and the slave node can communicate.

Step 202: The MEP generates and sends a first OAM packet to the receiving end when determining that the MEP is the master node.

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

In the embodiment of the present invention, the primary node in the virtual home MEP may generate the first OAM packet, and may send the first OAM packet to the receiving end, by the receiving The terminal processes the first OAM packet. Then, one MEP in the virtual home MEP may first determine whether the MEP is a master node, and if the MEP is determined to be a master node, the MEP may generate the first OAM packet.

Step 203: The MEP, when determining that the MEP is not the master node, prohibits generating the first OAM packet. The virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.

In the embodiment of the present invention, if the MEP determines that the MEP is not the master node, the first OAM packet is prohibited from being generated. That is, in the embodiment of the present invention, in the virtual home MEP, only the master node generates an OAM packet, and sends the generated OAM packet to the receiving end, and the slave node does not generate an OAM packet. The OAM packet is not sent to the receiving end, so that the receiving end receives only one OAM packet, which effectively avoids an abnormal alarm on the receiving end.

In the embodiment of the present invention, the receiving end may generate the second OAM packet, and may send the second OAM packet to the virtual home MEP, where one MEP of the virtual home MEP receives the After the second OAM packet, the MEP may be first determined to be the master node. If the MEP is determined to be the master node, the MEP may directly process the second OAM packet. If the MEP is not the master node, the MEP may send the second OAM packet to the master node, and the master node processes the second OAM packet.

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

Further, in an embodiment of the invention, there is one and only one master node in the virtual home MEP. The method may further include: when the preset condition is met, the MEP performs an active/standby switchover with another MEP.

If the MEP is the master node, the MEP can complete the active/standby switchover with a slave node when the preset condition is met.

If the MEP is a slave node, when the preset condition is met, the MEP may be A master node completes the active/standby switchover.

Preferably, if it is determined that the MEP is not a master node, the MEP may monitor whether the master node is normal in real time, timing, or triggered. If the MEP determines that the master node is abnormal, the MEP may use the MEP. Set as the primary 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 may monitor whether the connection path with the master node is normal in real time, timing, or triggered. If the MEP determines that the connection path is abnormal, then The MEP may set the MEP as a master node.

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

Preferably, if the MEP is determined to be a master node, the MEP may monitor the MEP in real time, timing, or triggered. If the MEP is abnormal, the MEP may go to the virtual home MEP. One of the slave nodes sends information 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 the switching instruction for implementing the active/standby switchover, and after receiving the switching instruction, the master node and a slave node in the virtual home MEP can complete the active/standby switchover.

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

Embodiment 2

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

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

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

Optionally, the device may further comprise a receiving module.

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

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

Optionally, the device may further comprise a processing module.

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

Optionally, the device may further comprise a switching module.

In the embodiment of the present invention, the virtual home MEP has one and only one master node, and the switching module may be configured to perform an active/standby switchover with another MEP when the preset condition is met.

Please refer to FIG. 4B , which is a structural diagram of the apparatus including the determining module 401 , the operating module 402 , the receiving module 403 , the processing module 404 , and the switching module 405 .

The device may include the receiving module 403, the processing module 404, and the switching module 405, or may include the receiving module 403, the processing module 404, and the switching module 405, in addition to the determining module 401 and the operating module 402. The module or all modules can be different depending on the actual situation.

Embodiment 3

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

As shown in FIG. 5, the apparatus 500 includes: a bus 540; and a processor 510, a memory 520, and an interface 530 connected to the bus 540, where the interface 530 is configured to send a first OAM message to the receiving end; For storing instructions, the processor 910 is configured to execute the instruction for determining whether the MEP is a master node; the processor 910 executing the instruction is further configured to generate the first OAM when determining that the MEP is a master node a message; the processor 910 executing the instruction is further configured to prohibit generating the first OAM report when determining that the MEP is not a master node Text.

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

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

In the embodiment of the present invention, the processor 910 is configured to perform the processing on the second OAM packet when the MEP is determined to be the master node.

In the 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 the MEP and another MEP occur when a preset condition is met. Active/standby switchover.

Therefore, the apparatus 500 for transmitting an OAM message in the embodiment of the present invention can ensure that the MEP is a master node, and the first OAM packet is prohibited from being generated when the MEP is not the master node. The first OAM packet is sent to the receiving end only, and the two MEPs do not send two OAM packets to the receiving end as in the prior art. For the receiving end that receives only one OAM packet, obviously, the abnormal reporting alarm is not performed as in the prior art, and the normal operation of each network element is guaranteed.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed 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 solution of the embodiment.

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

The integrated unit is implemented as a software functional unit and as a standalone product When sold or used, it can be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to describe the technical solutions of the present application in detail, but the description of the above embodiments is only for helping to understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art will be able to devise variations or alternatives within the scope of the present invention within the scope of the present invention.

Claims

A method for transmitting an OAM message, comprising:

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

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

The MEP prohibits generating the first OAM packet when determining that the MEP is not the master node;

The virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.
The method of claim 1, wherein before the MEP in the virtual home MEP determines whether the MEP is a master node, the method further comprises: receiving a second OAM message from the receiving end.
The method of claim 2, wherein after the MEP in the virtual home MEP determines whether the MEP is a master node and receives the second OAM message, the method further includes:

The MEP sends the second OAM packet to the primary node in the virtual home MEP when determining that the MEP is not the master node.
The method of claim 2, wherein after the MEP in the virtual home MEP determines whether the MEP is a master node and receives the second OAM message, the method further includes:

The MEP processes the second OAM packet when determining that the MEP is the master node.
The method according to any one of claims 1 to 4, wherein the virtual home MEP has one and only one master node; and the method further comprises: when the preset condition is met, the MEP and An active/standby switchover takes place on another MEP.
An apparatus for transmitting an OAM message, where the apparatus is applied to a MEP in a virtual home MEP;

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

The operation module is configured to: when the MEP is determined to be the primary node, generate and send the first OAM packet to the receiving end, and when the determining that the MEP is not the primary node, the first OAM packet is prohibited from being generated; The virtual home MEP includes at least two MEPs, and the attribute parameters of each MEP are the same.
The device according to claim 6, wherein the device further comprises a receiving module, configured to receive a second OAM message from the receiving end.
The apparatus according to claim 7, wherein the operation module is further configured to: when determining that the MEP is not a master node, send the second OAM message to a master node in the virtual home MEP .
The device according to claim 7, wherein the device further comprises a processing module, configured to process the second OAM message when determining that the MEP is a master node.
The device according to any one of claims 6-9, wherein there is one and only one master node in the virtual home MEP; the device further includes a switching module, when the preset condition is met, An active/standby switchover occurs with another MEP.