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Operation protection method, node and system

A service protection and node technology, applied in the field of communication transmission, can solve the problems of erroneous reporting of FRR, unsuccessful FRR switching, etc., and achieve the effect of preventing successful switching events

Inactive Publication Date: 2012-08-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a service protection method, node and system, which solves the problem of unsuccessful FRR switching in the prior art and incorrect reporting of successful FRR switching to the management plane

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  • Operation protection method, node and system
  • Operation protection method, node and system
  • Operation protection method, node and system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0027] A service protection method provided by an embodiment of the present invention includes: detecting whether a service flow merging node corresponding to a predetermined bypass protection path is available, and if not available, canceling the bypass protection path; reselecting the bypass protection path , to protect the business.

[0028] In the embodiment of the present invention, the PLR ​​node detects in time whether the predetermined Bypass LSP really has the actual protection capability, that is, detects in time whether the service flow merging node corresponding to the predetermined bypass protection path is available. Protection status, if the predetermined Bypass LSP does not actually have the protection function, cancel the predetermined Bypass LSP, and re-select a suitable Bypass LSP, which can provide protection performance within 50ms as much as possible. Even if the resources of the Bypass LSP are limited and another Bypass LSP cannot be reselected successfu...

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PUM

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Abstract

The embodiment of the invention relates to the field of communication transmission and particularly discloses a operation protection method, a node and a system, which include the following steps: detecting whether the operation flow merge node corresponding to a predefined bypass protection route is available, if no, abolishing the bypass protection route; and reselecting a bypass protection route to use so as to protect the operation. When the operation flow merge node is not available, protection function within 50ms can still be provided. Even if the Bypass LSP source is limited and a second Bypass LSP can not be reselected, report of wrong successful FRR switching incident can be prevented.

Description

technical field [0001] The present invention relates to the field of communication transmission, in particular to a service protection method, node and system. Background technique [0002] Fast Reroute (Fast Reroute, FRR) is a mechanism for protecting Label Switched Path (Label Switched Path, LSP) links and nodes. FRR can use a pre-established LSP to protect one or more LSPs. The protected LSP is called the main LSP, and the pre-established LSP is called the protection LSP, which can also be called the bypass LSP. Each LSP can be established through a protocol such as Resource Reservation Protocol (Resource Reservation Protocol, RSVP) or Label Distribution Protocol (Label Distribution Protocol, LDP). When a link or a node of the primary LSP fails, protection switching is performed on the node where the failure is found. This node is called a local repair node (Point of Local Repair, PLR), and the protection switching is called FRR switching. In this way, the service can c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/56H04L45/24
Inventor 朱飞
Owner HUAWEI TECH CO LTD