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Network protection method and network protection framework

A network protection and network technology, applied in the direction of network interconnection, data exchange network, digital transmission system, etc., can solve the problems of reducing network utilization and reliability, and not being able to protect the intermediate links and nodes of PBB-TE tunnels alone , to achieve the effect of improving utilization and reliability

Inactive Publication Date: 2011-01-12
ZTE CORP
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Problems solved by technology

[0006] For Ethernet, link and node protection are part of Ethernet protection. Most network failures occur on a certain link or node. The current end-to-end network protection scheme, more importantly, cannot The intermediate links and nodes of the PBB-TE tunnel are individually protected, but the entire tunnel must be protected, which reduces the utilization rate and reliability of the network

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  • Network protection method and network protection framework

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Embodiment Construction

[0043] figure 2A schematic diagram of the network architecture based on the dual-node protection model for realizing Ethernet tunnel segment protection in the present invention, the dual-node protection model is used for a certain local segment and one of the end points on the segment in the PBB-TE network A group of Traffic Engineering Service Instances (TESI, Traffic Engineering Service Instance) are used for protection. Such as figure 2 As shown, for the part of the network that needs to be protected on the PBB-TE tunnel, a primary segment (Primary Segment) and a backup segment (Backup Segment) are set, and the backup segment is used to protect the primary segment. The primary segment and the backup segment share only one endpoint bridge, and the other endpoint bridge of the backup segment is used to protect the other endpoint bridge of the primary segment. The active section and the standby section together form a V-shaped structure and form a protection domain. Vario...

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Abstract

The invention provides a network protection method and a network protection framework. Through a double-node protection mould of the invention, a part of networks needing to be protected on a provider backbone bridge traffic engineering (PBB-TE) tunnel which supports traffic engineering are provided with a protection domain consisting of a primary section and a standby section, so that a certain section and an end point bridge of a part of the PBB-TE tunnel are protected to the maximum extent. The PBB-TE segmented protection network framework provided by the invention realizes the partial segmented protection of the PBB-TE tunnel, protects a partial section needing to be protected and solves the problem that the entire Ethernet tunnel needs to be switched when a part fails. The method and the framework have the advantages of enhancing the utilization ratio and reliability of the network, achieving high flexibility on the protection of networking implementation and meeting common requirements during practical networking.

Description

technical field [0001] The present invention relates to network protection technology, in particular to a network protection method and network protection architecture based on carrier-grade Ethernet technology, that is, Provider Backbone Bridge Traffic Engineering (PBB-TE, Provider Backbone Bridge Traffic Engineering) that supports traffic engineering. Background technique [0002] With the introduction of the concept of Carrier Ethernet (CE, Carrier Ethernet) to meet the requirements of telecommunication networks, the connection-oriented Ethernet technology, that is, Provider Backbone Transport (PBT, Provider Backbone Transport) has also been proposed one after another. [0003] The PBT technology is a connection-oriented Ethernet transmission technology, also called Provider Backbone Bridge Traffic Engineering (PBB-TE, Provider Backbone Bridge Traffic Engineering). PBB-TE technology is based on PBB technology, and its core is to improve PBB technology. The source device o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/46H04L12/56H04L1/22H04L45/24
Inventor 敖婷吴少勇魏月华王斌
Owner ZTE CORP
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