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Method and device for transmitting L2VPN service by using tunnel group in MPLS network

A technology of group transmission and tunneling, which is applied in the field of MPLS L2VPN service provisioning and protection, and can solve the problems of increasing the complexity of L2VPN service deployment

Inactive Publication Date: 2011-05-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When a tunnel fails, the carried PW can still choose to transmit its business data through the backup tunnel. This method increases the complexity of L2VPN service deployment.

Method used

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  • Method and device for transmitting L2VPN service by using tunnel group in MPLS network
  • Method and device for transmitting L2VPN service by using tunnel group in MPLS network
  • Method and device for transmitting L2VPN service by using tunnel group in MPLS network

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Embodiment Construction

[0086] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0087] In the present invention, a method for using a tunnel group to transmit L2VPN services in an MPLS network, such as figure 1 shown, including the following steps:

[0088] S11) Establish a tunnel group between the sending end PE and the receiving end PE, so that one or more PSN tunnels in the MPLS network join the tunnel group;

[0089] S12) Bind the L2VPN service with the tunnel group, and select the PSN tunnel used to carry the L2VPN service in the tunnel group;

[0090] S13) The PE at the sending end and the PE at the receiving end use the selected PSN tunnel to transmit the L2VPN service.

[0091] Wherein, step S11) also includes:

[0092] se...

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Abstract

The invention relates to a method and a device for transmitting a layer 2 virtual private network (L2VPN) service by using a tunnel group in a multi-protocol label switching (MPLS) network. The method comprises the following steps of: establishing the tunnel group between a transmitting end provider edge device (PE) and a receiving end PE, so that one or more packet switching network (PSN) tunnels in the MPLS network join in the tunnel group; binding the L2VPN service with the tunnel group, and selecting a PSN tunnel for bearing the L2VPN service in the tunnel group; and transmitting the L2VPN service by using the transmitting end PE and the receiving end PE through the selected PSN tunnel. The protection of pseudo wires (PWs) can be neglected in the L2VPN service, and the tunnel group can protect the PWs. The tunnel group technology has high extensibility, can support the conventional MPLS tunnel technology, and also can conveniently support MPLS tunnel technology which possibly occurs in the future. The tunnel group is easy to configure, and the configuration of the tunnel group can be dynamically modified in the state that the L2VPN service is not interrupted.

Description

technical field [0001] The present invention relates to a method and device for providing bearer and protection of MPLS L2VPN services, in particular to a method and a method for integrating one or more PSN tunnels of the same or different types in a tunnel group to realize routing and forwarding device. Background technique [0002] VPN (Virtual Private Network, virtual private network) is a dedicated private network that uses public network resources to provide services for specific users. Among the many classifications of VPNs, MPLS (MultiProtocol Label Switching, Multi-Protocol Label Switching) VPN has become the most popular VPN technology. In MPLS VPN technology, L2VPN (Layer 2Virtual Private Network, that is, two-layer virtual private network), is based on PW (Pseudo Wire, that is, a pseudowire, on a packet-switched network tunnel, between two operator edge devices The mechanism of simulating point-to-point layer-2 business) realizes the technology of layer-2 virtua...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46H04L45/50
Inventor 陈尔严郭瑞芳江乐祁学豪李允
Owner ZTE CORP
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