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Link protection method and system for virtual private network

A technology of virtual private network and virtual private network, which is applied in the field of link protection of virtual private network, can solve the problems such as long time for end-to-end business convergence, achieve shortening time of business interruption, increase switching speed, and quickly switch Effect

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

[0004] In addition, the existing technology also provides a VPN FRR technology based on VPN-based fast switching of private network routes, by pre-setting the active and standby forwarding entries pointing to the active PE and the standby PE in the remote PE, combined with the rapid detection of PE failures , aims to solve the problem of long end-to-end service convergence time (more than 1s) caused by PE node failure in MPLS VPN network with CE dual-homing PE, and solve the problem that the recovery time of PE node failure is related to the number of private network routes carried by it Problem, when the PE node fails, the end-to-end service convergence time is less than 1s

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  • Link protection method and system for virtual private network
  • Link protection method and system for virtual private network
  • Link protection method and system for virtual private network

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[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0032] figure 1 A schematic structural diagram of an embodiment of a link protection system for a virtual private network provided by the present invention. figure 1 The sending node and the receiving node in the virtual private network described in the system embodiment shown are all connected to the active forwarding node and the standby forwarding node through a pseudowire, and the system includes:

[0033] a setting module, configured to set a backup tunnel for at least one of the pseudowires;

[0034] The first switching module is configured to switch servic...

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Abstract

The invention provides a link protection method and a link protection system for a virtual private network and relates to the field of communication. Transmitting nodes and receiving nodes in the virtual private network are connected with main forwarding nodes and standby forwarding nodes through pseudowires. The method comprises the following steps of: setting a standby tunnel for at least one pseudowire in the pseudowires; and when the pseudowire provided with the standby tunnel breaks down, switching failed pseudowire-born service to the standby tunnel. The provided technical scheme can be applied to link protection management of a double-layer virtual private network.

Description

technical field [0001] The invention relates to the communication field, in particular to a link protection method and system of a virtual private network. Background technique [0002] MPLS TE FRR (Fast Reroute, fast rerouting) is one of the most commonly used technologies to solve fault fast switchover. Its basic idea is to establish an end-to-end TE tunnel between two PE devices, and The primary LSP (label switching path) of the device has established a backup LSP in advance. When the device detects that the primary LSP is unavailable (node ​​failure or link failure), the traffic will be switched to the backup LSP, so as to realize fast service switching. [0003] MPLS TE FRR technology is a technology to realize local protection of the network. In the network where MPLS TE is applied, when a link or node fails somewhere, the LSP configured with fast rerouting protection can automatically switch data to the protection chain on the road. MPLS TE FRR establishes a local b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/56H04L12/46
CPCH04L45/22H04L45/68H04L41/0663H04L45/28H04L45/50H04L41/40
Inventor 吴世华陈世猛
Owner ZTE CORP
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