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Label synchronous control method concurrently operating multi-MPLS protocol in MPLS group network

A synchronous control and label technology, applied in data exchange network, digital transmission system, electrical components, etc., can solve problems such as long period interval, lack of clarity, LSP establishment error, etc.

Inactive Publication Date: 2003-11-12
HUAWEI TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the problem of LSP establishment error or loss that may be caused by large-capacity route oscillation in the network, due to the long interval between error occurrence cycles, there is currently no clear solution. Usually, it is only used when an LSP error occurs, at an unimportant time. segment restart method as a temporary remedy

Method used

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  • Label synchronous control method concurrently operating multi-MPLS protocol in MPLS group network
  • Label synchronous control method concurrently operating multi-MPLS protocol in MPLS group network
  • Label synchronous control method concurrently operating multi-MPLS protocol in MPLS group network

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Embodiment Construction

[0018] refer to figure 2 , the specific embodiment of the label allocation control scheme of synchronous label application and asynchronous release proposed by the present invention is: MPLS protocol module and LSP management module can complete label application and LSP creation message notification when LSP is created according to the following rules, and LSP deletion Real-time label true, false release and LSP deletion message notification can perfectly solve the problem that the label processing cannot realize synchronous control after the current router runs multiple MPLS protocols. The rules are as follows:

[0019] (1) Creation of LSP and application of labels

[0020] When the MPLS protocol module creates an LSP, it first uses the MPLS LspmAllocLabel interface to synchronously apply for a label from the LSP management module. If the application is successful, the LSP is created, and MPLS_NotifyLspmLspInfo asynchronously notifies the LSP management module (ucLspOperTy...

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Abstract

The method includes applying countermark from LSP management module in synchronization when LSP being created by MPLS, if the application is successful settnig up LSP; informing countermark cancellation information related to LSP to LSP in asynchronization means by MPLS after the LSP information being cancelled; listing counter mark cancellatino information after all LSP cancellation information in message quene of LSP management module. Since the countermark has no relation with any LSP, which can be applied continuously by the other module so that LSP collision at operation with multiple MPLS protocol modules can be avoided. It provides two strategies of true and false release for asynchronous countermark to solve countermark synchronization control problem considering countermark switching requirement in some cases.

Description

Technical field [0001] The invention belongs to the field of computer network communication, and in particular relates to a label synchronous control method when multiple MPLS protocols are run simultaneously in an MPLS networking. Background technique [0002] With the rapid development of Multi-Protocol Label Switching (MPLS) technology, more and more MPLS-related protocols have been implemented and added to high-end routers and core routers, and are widely used in various MPLS networking environments. For the control and management of multiple MPLS protocols running at the same time in many MPLS networks, usually each manufacturer mainly performs through the LSP management (LSPM) module, which completes: label release and distribution, LSP to the underlying forwarding driver download, label Functions such as information base management, configuration management and interaction of each module. However, due to the continuous increase of MPLS protocol modules in routers, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L29/06H04Q3/00H04Q3/545
Inventor 王雷
Owner HUAWEI TECH CO LTD
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