WO2012163233A1

WO2012163233A1 - Loopback detection method and apparatus

Info

Publication number: WO2012163233A1
Application number: PCT/CN2012/075810
Authority: WO
Inventors: 宋兴; 钟磊; 魏涛; 蒋小忠
Original assignee: 华为技术有限公司
Priority date: 2011-05-27
Filing date: 2012-05-21
Publication date: 2012-12-06
Also published as: CN102801575A; CN102801575B

Abstract

Disclosed are a loopback detection method and apparatus. The method comprises: writing the source MAC address and VLAN ID information contained in a received first service packet, and the ID information of the port receiving the first service packet into a MAC address table, and setting the corresponding loopback indication ID to a first state in the MAC address table; and determining the second service packet as a loopback packet if the source MAC address and VLAN ID information contained in a received second service packet are the same as the source MAC address and VLAN ID information contained in the first service packet in the MAC address table, and the port receiving the second service packet is different from the port corresponding to the port ID information in the MAC address table, and the loopback indication ID indicates a first state. The present invention is capable of accurately determining the received service packet as a loopback packet, thereby improving the accuracy and reliability of loopback detection.

Description

Loopback detection method and device

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a loopback detection method and apparatus.

Background of the invention

In Ethernet, there may be loopback on the port of the transport node. In the prior art, the transit node can detect the loopback of the port by constructing a detection packet of a specific Media Access Control (MAC) address.

However, since the specific MAC address may also be the address of the user equipment or other transmission node, the detection message of the transmission node may be identified by other transmission nodes as a service message for extraction, or by the user equipment or other transmission node. The service packet is identified by the transmission node as the detection packet, thereby reducing the accuracy and reliability of the loopback detection. In addition, because the above detection packets occupy a certain amount of network bandwidth, when the network is busy, the transmission of the detection packets may affect the normal operation of the service.

Summary of the invention

The embodiment of the invention provides a loopback detection method and device for improving the accuracy and reliability of the loopback detection and ensuring the normal operation of the service.

The embodiment of the invention provides a loopback detection method, including:

And the source MAC address and the VLAN identification information included in the received first service packet, and the port identification information of the first service packet, are written into the MAC address table, and are in the MAC address table. Setting the corresponding loopback indication identifier to the first state;

And if the source MAC address and the VLAN identifier information included in the received second service packet are the same as the source MAC address and the VLAN identifier information included in the first service packet in the MAC address table, and received And determining, by the second service packet, that the port corresponding to the second service packet is different from the port corresponding to the port identifier information in the MAC address table, and the loopback indication identifier is the first state. The text is the ring return text.

The embodiment of the invention further provides a loopback detection device, including:

a learning unit, configured to write the source MAC address and the VLAN identification information included in the received first service packet, and the port identification information of the first port that receives the first service packet into the MAC address table. And setting a corresponding loopback indication identifier to the first state in the MAC address table;

a determining unit, configured to: if the source MAC address and VLAN identifier information included in the received second service packet, and the source MAC address and the VLAN identifier included in the first service packet in the MAC address table Information phase And the port corresponding to the second service packet is different from the port corresponding to the port identifier information in the MAC address table, and the loopback indication identifier is the first state, The second service message is a loop report.

According to the foregoing technical solution, the embodiment of the present invention sets the corresponding loopback indication identifier to the first state in the service packet learning process, so that the subsequent service packet processing process can be based on the received report. The loopback indication identifier corresponding to the text accurately determines whether the packet is a loopback text, thereby improving the accuracy and reliability of the loopback detection. In addition, since no additional detection packets are introduced, the bandwidth of the network is not additionally occupied, and the normal operation of the service is not affected.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic flowchart of a loopback detection method according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a loopback detecting apparatus according to another embodiment of the present invention.

The way of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying 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 a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a loopback detection method according to an embodiment of the present invention. As shown in FIG. 1, the loopback detection method in this embodiment may include:

101. Write the source MAC address and VLAN identification information included in the received first service packet, and the port identifier information of the first service packet, into the MAC address table, and in the MAC address table. Setting the corresponding loopback indication identifier to the first state;

102. The source MAC address and VLAN identifier information included in the received second service packet are as follows.

The source MAC address and the VLAN identifier information included in the first service packet in the MAC address table are the same, and the port that receives the second service packet is different from the port corresponding to the port identifier information in the MAC address table. And the loopback indication identifier is the first state, and the second service packet is determined to be a loop report.

It can be understood that: the loopback indication identifier in this embodiment does not directly indicate whether the packet is a loopback message, but needs to indicate whether the identifier is the first according to the loopback indication corresponding to the received packet in the MAC address table. The status can be used to determine that the message is a ring report.

The execution bodies of 101 and 102 in this embodiment may be transit nodes. Determining the service packet at the transit node as After the loop returns the text, the user can be notified by means of an alarm. There is a loopback on the network to remind the user to check in time. Further, the transit node may further discard the ring report text to avoid the ring report text affecting the network.

Further, after 101, the loopback indication flag may be set to the second state in the MAC address table in a predetermined preset time (for example, 100 ms). Specifically, the preset time may be set according to actual needs. For example, considering the migration of the host location, the specific value range of the preset time may be determined according to the experience time of the host migration. Then, after the transit node sets the loopback indication identifier to the second state in the MAC address table, if the source MAC address and VLAN identifier information included in the second service packet received by the transit node and the MAC address are The source MAC address and the VLAN identification information included in the first service packet in the table are the same, and the port that receives the second service packet is different from the port corresponding to the port identifier information in the MAC address table, but If the loopback indication is set to the second state at this time, it can be stated that the host location is normally migrated, and the transit node re-executes 101 to perform the service packet learning process.

Optionally, the transit node sets the corresponding loopback indication identifier to the first state in the MAC address table, and specifically, the transit node may set the value of the corresponding loopback indication identifier to 1 in the MAC address table, that is, The transit node sets the corresponding loopback indication identifier to the set state in the MAC address table. Correspondingly, the transport node sets the loopback indication identifier to the second state in the MAC address table, specifically, the transport node is The value of the loopback indication identifier in the MAC address table may be set to 0, that is, the transit node may set the corresponding loopback indication identifier to the unset state in the MAC address table. vice versa.

In this embodiment, the loopback indication flag is set to the set state in the service packet learning process, so that the loopback corresponding to the received packet can be obtained in the subsequent service packet processing process. The indication identifier accurately determines whether the message is a loop report, thereby improving the accuracy and reliability of the loopback detection. In addition, since no additional detection packets are introduced, the bandwidth of the network is not additionally occupied, so that the normal operation of the service is not affected.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments. FIG. 2 is a schematic structural diagram of a loopback detecting apparatus according to another embodiment of the present invention. As shown in FIG. 2, the loopback detecting apparatus of this embodiment may include a learning unit 21 and a determining unit 22. The learning unit 21 is configured to write the source MAC address and the VLAN identification information included in the received first service packet, and the port identifier information of the first port that receives the first service packet, into the MAC address. a table, and setting a corresponding loopback indication identifier to the first state in the foregoing MAC address table; the determining unit 22 is configured to: if the received source MAC address and VLAN identifier information included in the second service packet, and the MAC address The source MAC address and the VLAN identifier information included in the first service packet in the address table are the same, and the port that receives the second service packet is different from the port corresponding to the port identifier information in the MAC address table. And the loopback indication identifier is the foregoing first state, and determining that the second service packet is a ring report text.

The method in the embodiment corresponding to the above FIG. 1 can be implemented by the loopback detecting device provided in this embodiment.

Further, the learning unit 21 in this embodiment may be further configured to set the loopback indication identifier to the second state in the MAC address table in a preset preset time.

Optionally, the learning unit 21 sets the corresponding loopback indication identifier to the first state in the MAC address table. Specifically, the learning unit 21 may set the value of the corresponding loopback indication identifier to 1 in the MAC address table. The learning unit 21 can set the corresponding loopback indication identifier to the set state in the MAC address table. Accordingly, the learning unit 21 sets the loopback indication identifier to the second state in the MAC address table, which may be specifically The learning unit 21 may set the value of the loopback indication identifier to 0 in the MAC address table, that is, the learning unit 21 may set the corresponding loopback indication identifier to the unset state in the MAC address table. vice versa.

In this embodiment, the learning unit sets the corresponding loopback indication identifier to the set state in the service packet learning process, so that the determining unit can receive the received packet according to the received service packet processing process. The corresponding loopback indication identifier accurately determines whether the packet is a loopback text, thereby improving the accuracy and reliability of the loopback detection. In addition, since no additional detection packets are introduced, the bandwidth of the network is not additionally occupied, so that the normal operation of the service is not affected.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above may refer to the corresponding processes 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 unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. Alternatively, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, device Or an indirect coupling or communication connection of the unit, which may be in electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over 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 invention 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, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute 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 transit node, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. 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, which can store program codes.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A loopback detection method, comprising:

And if the source MAC address and the VLAN identifier information included in the received second service packet are the same as the source MAC address and the VLAN identifier information included in the first service packet in the MAC address table, and received And the second service packet is determined to be different from the port corresponding to the port identifier information in the MAC address table, and the loopback indication identifier is the first state. The text is the ring return text.

The method according to claim 1, wherein the setting the corresponding loopback indication identifier to the first state in the MAC address table includes:

Setting a value of the corresponding loopback indication identifier to 1 in the MAC address table; or

The value of the corresponding loopback indication identifier is set to 0 in the MAC address table.

The method according to claim 1 or 2, wherein the setting of the corresponding loopback indication identifier in the MAC address table is set to a first state, and further comprising:

The loopback indication flag is set to the second state in the MAC address table within a preset preset time.

The method according to claim 3, wherein the setting the loopback indication identifier to the second state in the MAC address table includes:

Setting the value of the loopback indication identifier to 0 in the MAC address table; or

The value of the loopback indication identifier is set to 1 in the MAC address table.

5. A loopback detecting device, comprising:

a determining unit, configured to: if the source MAC address and VLAN identifier information included in the received second service packet, and the source MAC address and the VLAN identifier included in the first service packet in the MAC address table If the information is the same, and the port that receives the second service packet is different from the port corresponding to the port identification information in the MAC address table, and the loopback indication identifier is the first state, The second service message is a loop report text.

The apparatus according to claim 5, wherein the learning unit is specifically configured to: receive source MAC address and VLAN identification information included in the received first service packet, and receive the first The port identification information of the first port of the service packet is written into the MAC address table, and the value of the corresponding loopback indication identifier is set to 1 in the MAC address table; or

And the source MAC address and the VLAN identification information included in the received first service packet, and the port identification information of the first port that receives the first service packet are written into the MAC address table, and The value of the corresponding loopback indication identifier is set to 0 in the MAC address table.

The device according to claim 5 or 6, wherein the learning unit is further configured to set the loopback indication identifier to be in the MAC address table in a preset preset time. Two states.

The device according to claim 7, wherein the learning unit is further configured to set the value of the loopback indication identifier in the MAC address table to a predetermined preset time. 0; or

The value of the loopback indication identifier is set to 1 in the MAC address table within a preset preset time.