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Shared link protection method, node and shared link protection system

A technology for sharing links and protecting systems, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of high data processing overhead, waste of protection resources, bandwidth multiplexing rate, etc. Effect

Active Publication Date: 2011-08-10
ZTE CORP
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a shared link protection method, a node and a shared link protection system, which solve the problems of high data processing overhead, waste of protection resources and low bandwidth reuse rate in the shared link protection process

Method used

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  • Shared link protection method, node and shared link protection system
  • Shared link protection method, node and shared link protection system
  • Shared link protection method, node and shared link protection system

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Embodiment Construction

[0039] There is a cross-ring structure in the ring network, such as figure 1 As shown, there is a shared link between the two ring networks Ring 1 and Ring 2, the shared link uses Node 1 and Node 2 as end nodes, and there is a protection channel for the shared link in both Ring 1 and Ring 2. Taking sending service data from node 1 to node 2 as an example, the routing path of the protection channel of the shared channel in Ring 1 is "Node 1-Node 5-Node 4-Node 3-Node 2", and the shared channel in Ring 2 The routing path of the protection channel of the channel is "node 1-node 9-node 8-node 7-node 6-node 2". When the shared link fails, because the two rings perform their own protection switching, node 2 repeatedly receives the same service data through different protection channels. Out of order; on the other hand, the business data is transmitted twice, occupying double the bandwidth resources, resulting in a waste of bandwidth resources.

[0040] In order to solve the above p...

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Abstract

The invention provides a shared link protection method, a node and a shared link protection system, which relate to networks with ring network structures and solve the problems of high data processing overhead, wasting of protection resources and low bandwidth reusability in a shared link protection process. The method comprises the following steps of: when a terminal node of a shared link detects the shared link fails, acquiring the priority of at least one currently available protection channel; selecting the protection channel with the highest priority from the at least one protection channel as a service protection channel; and switching service data on the current shared link onto the service protection channel for transmission. The technical scheme provided by the invention is applied to the networks with the ring network structures.

Description

technical field [0001] The invention relates to a ring network structure network, in particular to a shared link protection method, a node and a shared link protection system. Background technique [0002] Compared with other networking structures, on the one hand, the ring network structure has fewer nodes and is simpler to implement; on the other hand, the ring network protection can be used to enhance the reliability of the network. Therefore, in the current network, the ring network The network structure has been widely used. [0003] The MPLS ring network can be protected by bypass, which is mainly used to prevent all kinds of network serial gateway devices from becoming a single point of failure due to unexpected failures (such as hardware failures, power failures, software deadlocks, etc.), or to upgrade these gateway devices Provide favorable assistance during maintenance, avoid time delays and difficulties in network operation and maintenance management caused by m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04B1/74
Inventor 刘国满
Owner ZTE CORP
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