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Method and system for preventing circuit loop after failure recovery

A fault recovery and loop technology, applied in the field of network communication, can solve problems such as easy loops

Inactive Publication Date: 2009-02-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of this, the main purpose of the present invention is to provide a method for avoiding loops after fault recovery, and solve the problem that loops are prone to occur when one of the two fault points at the two ends of the cross-ring node recovers.
[0012] The second object of the present invention is to provide a system that avoids loops after fault recovery, and solves the problem that loops are prone to occur when one of the two fault points at the two ends of the cross-ring node is recovered.

Method used

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  • Method and system for preventing circuit loop after failure recovery
  • Method and system for preventing circuit loop after failure recovery
  • Method and system for preventing circuit loop after failure recovery

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Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments.

[0058] First, the system provided by the present invention is described in detail, as image 3 as shown, image 3 System structure diagram for avoiding loops after failure recovery. The system is mainly composed of: failure recovery node 300 and cross-ring node 310 .

[0059] Here, the failover node is a non-spanning node.

[0060] The fault recovery node 300 sets a delay time after the fault recovery, and then sends a fault recovery notification message from the two RPR rings to the cross-ring node; when the delay time expires, the working state of the fault recovery node is set to normal.

[0061] The cross-ring node 310 receives the failure recovery notification message sent by the failure recovery node, and sets its own working status.

[0062] The fault recove...

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Abstract

The invention relates to a method for avoiding annular loop when the accidence is removed, and relative system, wherein recovered node via setting delay time sends accidence recover report from two RPR loops to the loop-span node; when the delay is over, setting operation state as normal; in delay period, loop-span node receives the report, and sets the operation state of loop-span node that based on its state and the states of other loop-span nodes on RPR loop, decides to change its work state or not.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and system for avoiding loops after fault recovery. Background technique [0002] As the competition focus of communication network operators has shifted from the backbone network to the metropolitan area network, the establishment of an efficient and economical metropolitan area transmission network supporting multiple services has become a common goal of major operators. Due to its many advantages, the Resilient Packet Ring (RPR) technology gradually enters the field of metro transport network and becomes one of the hot spots. [0003] RPR technology is a new type of network architecture and technology designed to meet the requirements of packet-based metropolitan area network; it is a ring network composed of packet switching nodes, and adjacent nodes are connected by a pair of optical fibers; its network topology is based on two a ring that travels in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/437H04L12/24H04L12/44
CPCH04L12/437
Inventor 张义龙张钟凯何智峰
Owner HUAWEI TECH CO LTD