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Intersected or tangent ring network protection method and system

A technology of tangent ring and ring network, which is applied in the direction of transmission system, digital transmission system, data exchange network, etc., and can solve the problems of increasing configuration workload and wasting transmission bandwidth.

Active Publication Date: 2011-04-27
ZTE CORP
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  • Abstract
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Problems solved by technology

However, when using this ring network superposition linear mode, as shown in Figure 2, it is necessary to increase the configuration of the linear protection group and the linear protection tunnel at nodes B and BB, and to increase the linear working tunnel and the linear protection tunnel TMP (T-MPLS Path, T-MPLS channel layer) OAM (Operation Administration and Maintenance, operation management and maintenance) detection, so the transmission bandwidth is wasted
In addition, each node in the protection link direction (such as Figure 2a all need to configure linear protection tunnels for label switching of linear protection tunnels. Therefore, a lot of configuration workload needs to be increased

Method used

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  • Intersected or tangent ring network protection method and system

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Embodiment Construction

[0045] The core problem solved by the present invention is: in the interconnection protection of intersecting and tangent rings, how to perform switching protection under the condition that all working links on the intersecting and tangent nodes fail. In order to solve this technical problem, the present invention proposes an intersecting and tangent ring network protection switching method, the core idea of ​​which is to perform mutual service exchange processing through two bidirectional and mutually independent ring network protection tunnels.

[0046] Based on the above ideas, the present invention proposes an intersecting and tangent ring network protection method, specifically adopting the following technical solutions:

[0047] Two-way working tunnels are configured on intersecting or tangential nodes of the cross-ring protection, and ring network protection groups are respectively established in each direction of the working tunnels.

[0048] Wherein, for the double-ri...

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Abstract

The invention discloses intersected or tangent ring network protection method and system. A two-way working tunnel is allocated at an intersected or tangent node subjected to transannular guard; a ring network guard set is respectively established in each direction of the working tunnel; and TMSOAM detection is started in the directions of a two-way active link and a protection link. By adopting a two-way intersected or tangent ring network protection method based on T-MPLS (Transport Multi-protocol Label Switching) and provided by the invention, the interconnected link on a dual ring intersected or tangent node can be protected, the end-to-end protection of transannular service can be realized when an interconnected link has a fault, and the protection switching time is ensured to be not longer than 50ms.

Description

technical field [0001] The invention relates to the technical field of ring network protection of a packet transmission network, in particular to an intersecting and tangent ring network protection method and system. Background technique [0002] With the gradual popularization and application of packet transmission networks, users have higher and higher requirements for network reliability. In order to improve the survivability of the network, the protection mechanism of the network is essential. T-MPLS (Transport-Multi Protocol Label Switching) protection mainly includes linear protection and ring network protection. The main advantages of ring network protection switching technology are: it belongs to segment layer protection, which saves a lot of LSP (Label Switched Path, Label Switched Path) entries and configuration workload; it does not need overhead frames at intervals of 3.3ms for each LSP, greatly improving the transmission of service channels bandwidth. [0003...

Claims

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Application Information

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IPC IPC(8): H04L12/437H04L12/24
CPCH04L12/4633H04L12/437H04L45/50
Inventor 郭平
Owner ZTE CORP
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