Method, system and device for detecting virtual private LAN loop

A loop detection and virtual private technology, applied in the field of communication, can solve problems such as path loops and broadcast storms

Active Publication Date: 2009-10-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the impact of single point failures on services in the Ethernet connected to VPLS, link redundancy backup is required, but link redundancy backup will cause path loops, resulting in broadcast storms

Method used

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  • Method, system and device for detecting virtual private LAN loop
  • Method, system and device for detecting virtual private LAN loop
  • Method, system and device for detecting virtual private LAN loop

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0032] In order to solve the problem that the loop detection technology of the VPLS network depends on the deployment of the user-side network, and effectively avoid loops in the operator's network, the embodiment of the present invention provides a method for loop detection in a virtual private area network, see figure 2 , the method includes:

[0033] 101: The first operator's edge PE of the virtual private local area network generates a loop detection message, and the loop detection message carries the sending interval of the loop detection message and the blockage of the link between the first PE and the user edge CE. break priority;

[0034] 102: The first PE sends the loop detection message to the CE according to the sending interval;

[0035] 103: If the first PE receives the loop detection message, block the link between the first PE and the CE.

[0036] Wherein, the method also includes:

[0037] If the first PE receives the loop detection message sent by the seco...

Embodiment 2

[0058] In order to solve the problem that the loop detection technology of the VPLS network depends on the deployment of the user-side network, and effectively avoid loops in the operator's network, the embodiment of the present invention provides a virtual private local area network loop detection method, in a The PE sends a loop detection packet to detect the user-side network through the link between the CE and the PE. If the loop detection packet can be received on other PEs, it can be considered that the VPLS access The network on the user side is connected, indicating that there is a loop between CE and PE; when a loop is detected, one of the links can be automatically blocked on the PE; if the PE receives this loop detection packets, it can be considered that a loop has occurred inside the user-side network. At this time, the link connecting the PE to the CE can be blocked, thereby isolating the broadcast storm of the user to the user-side network. see image 3 , the s...

Embodiment 3

[0106] The embodiment of the present invention provides a virtual private local area network loop detection system, see Figure 6 , the system includes: a first operator edge PE301 and a user edge CE302, wherein,

[0107] The first PE301 is used to generate a loop detection message, which carries the sending interval of the loop detection message and the blocking priority of the link between the first PE301 and the CE 302; according to the sending interval , sending the loop detection message to CE302; if the first PE301 receives the loop detection message, then block the link between the first PE301 and CE302;

[0108] The CE302 is configured to receive a loop detection message sent by the first PE301; if there is a loop with the first PE301, send a loop detection message to the first PE301.

[0109] Wherein, the first PE301 is also used to, if the loop detection message sent by the second PE is received, according to the link between the second PE and CE302 carried in the r...

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Abstract

The embodiment of the invention provides a method for detecting a virtual private LAN loop, which comprises the following steps that: a first operator edge PE of a virtual private LAN generates a loop detection message carrying the sending interval of the loop detection message and the blocking priority of a link between a first PE and a user edge CE; the first PE sends the loop detection message to the CE according to the sending interval; and if the first PE receives the loop detection message, the link between the first PE and the CE is blocked. The embodiment of the invention also provides a system and a device for detecting the virtual private LAN loop. Through the proposal provided by the embodiment, the problem that a loop detection technique for a VPLS network depends on the deployment of a user side network is solved; and simultaneously, the loop is effectively prevented from appearing in the network of an operator.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, system and equipment for loop detection of a virtual private area network. Background technique [0002] With the continuous development of communication technology, Ethernet is widely used due to its advantages of simplicity, convenience, low price, high speed, and easy configuration and deployment. However, its network topology is very complex, and loops are prone to occur, which in turn leads to broadcast storms. . [0003] VPLS (Virtual Private LAN Services, Virtual Private LAN Service) technology is an Ethernet-based service, which enables users to simultaneously access the Ethernet network from multiple geographically dispersed points and access each other, making Ethernet LAN deployment no longer necessary. Subject to geographical restrictions. VPLS can enable users' LAN (Local Area Network, local area network) to extend their LAN to MAN (Metropolitan Area Network, me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437
CPCH04L45/18H04L12/4641H04L45/26H04L45/66H04L12/462
Inventor 张宇阳
Owner HUAWEI TECH CO LTD
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