A method and device for message forwarding applied to a layer-2 virtual private network

A private network and layer-2 virtualization technology, applied in the field of virtual private network, can solve problems such as unrealized 1+1 protection switching

Active Publication Date: 2011-12-28
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.

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  • A method and device for message forwarding applied to a layer-2 virtual private network
  • A method and device for message forwarding applied to a layer-2 virtual private network
  • A method and device for message forwarding applied to a layer-2 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 invention provides a method and device applied to message forwarding of a two-layer virtual private network. The method comprises the following steps of: establishing an access circuit between a local PE (Provider Edge) and local CE (Customer Edge), establishing an active virtual link and a protection virtual link with an opposite end PE which is connected with a remote end CE through an active tunnel and a protection tunnel respectively, and establishing an association relation among the access circuit, the active virtual link and the protection virtual link; and when a data message forwarded by the access circuit is received, transmitting the data message from the active virtual link and the protection virtual link respectively according to the association relation among the access circuit, the active virtual link and the protection virtual link. Due to the adoption of the method and the device, 1+1 protection switching of a VLL (Virtual Leased Line) service can be realized.

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 Applications(China)
IPC IPC(8): H04L12/56H04L12/46H04L45/243
Inventor 王明辉李华舟赵里遥
Owner XINHUASAN INFORMATION TECH CO LTD
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