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Method and device applied to message forwarding of two-layer virtual private network

A private network, layer 2 virtualization technology, applied in the field of virtual private network, can solve the problem of not realizing 1+1 protection switching and so on

Active Publication Date: 2014-11-26
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, for point-to-point VLL services, only 1:1 protection switching has been realized, and 1+1 protection switching has not yet been realized.

Method used

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  • Method and device applied to message forwarding of two-layer virtual private network
  • Method and device applied to message forwarding of two-layer virtual private network
  • Method and device applied to message forwarding of two-layer virtual private network

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] The main idea of ​​the present invention is: for any virtual circuit, the local service provider edge device (PE) establishes the access circuit with the local user edge device (CE) of the virtual circuit; meanwhile, the local PE connects with the virtual circuit The peer PE of the far-end CE establishes a working tunnel and a protection tunnel, and respectively establishes a working virtual link and a protecting virtual link on the working tunnel and the protecting tunnel; records the access circuit and the working virtual link and The association relationship of the protection virtual link; for the data message forwarded by the access circuit, according to the association relationship, the data message is forwarded from the wor...

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Abstract

The present invention provides a method and device for message forwarding applied to a layer-2 virtual private network. In the method, a local PE establishes an access circuit with a local CE, and communicates with a peer PE connected to a remote CE through a working tunnel and protection The tunnel establishes the working virtual link and the protection virtual link respectively, and establishes the association relationship between the access circuit and the working virtual link and the protection virtual link; when receiving the data message forwarded by the access circuit, according to the It is associated with the working virtual link and the protection virtual link, and the data packets are sent from the working virtual link and the protection virtual link respectively. The invention can realize 1+1 protection switching of VLL service.

Description

technical field [0001] The invention relates to the technical field of a virtual private network, in particular to a method and device for message forwarding applied to a layer-2 virtual private network. Background technique [0002] With the mass application of packet data, the transport MPLS (T-MPLS / MPLS-TP) based on Multi-Protocol Label Switching (MPLS) technology has become the mainstream packet transport technology recognized by the industry. MPLS-TP generally requires services to be carried on traffic engineering (TE) tunnels between peers. The TE tunnels can carry multiple services, such as VLL services, virtual private local area network services (VPLS), L3VPN, etc. The TE tunnel also has a corresponding backup tunnel. Single-send-single-receive 1:1 or dual-send and selective-receive 1+1 protection switching can be performed on the active and standby TE tunnels to achieve end-to-end path protection and ensure the reliability of the services it carries. . [0003] H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L12/46H04L45/243
Inventor 王明辉李华舟赵里遥
Owner XINHUASAN INFORMATION TECH CO LTD
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