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Double-homing protection method and device

A dual-homing protection and protection group technology, applied in the field of communication, can solve problems such as complex management and achieve simple management

Active Publication Date: 2012-07-11
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the second solution of the prior art, although the PW protection and the access link protection in the network do not affect each other, it is necessary to establish PWs for different PW protection groups between the two PEs of the dual-homing node. The sending and receiving of traffic on the PW also needs to conform to the protection mode of the access link, and the management is more complicated

Method used

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Embodiment Construction

[0041] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] see Figure 4 , Figure 4 It is a flowchart of a dual-homing protection method according to an embodiment of the present invention, which is applied to any one of two PE devices in a dual-homing node, and a cross-device access link negotiation channel has been established between the two PE devices , and cross-device access link protection has been configured on the access link of the dual-homing node according to the method in the prior art; the method includes the following steps:

[0043] Step 401, the current PE device establishes a data transmission channel and a forwarding entry synchronization channel with another PE device in the dual-homing node, so as to make the current PE device and the other PE device a logic...

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Abstract

The invention provides double-homing protection method and device. According the method provided by the invention, a forwarding item synchronizing channel and a data sending channel are built between two PE (Provider Edge) devices of a double-homing node; and a PW (Pseudo Wire) and an LSP (Label Switched Path) protection group bearing the PE are built between an opposite end PE device and a logic device which is actually formed by two PE devices, thereby realizing the LSP protection in the network. Through the invention, the in-network protection and the access link protection do not influence each other, the management is simple.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a dual-homing protection method and device. Background technique [0002] Two service provider edge devices (Provider Edge, PE) devices (dual-homing nodes) are connected to the same user edge device (Custom Edge, CE) device through their respective access links, so that PE nodes at both ends of the bearer network are connected. The protection of inbound services is called dual homing protection. In the following, the application of dual-homing protection will be described by taking the transmission network of mobile backhaul as an example. [0003] see figure 1 , figure 1 It is a schematic diagram of the transport network for mobile backhaul. The base station connects to PE3 through the access link, passes through the Layer 2 network of Multi-protocol Label Switching (MPLS), and reaches the core PE equipment: PE1 and PE2, and finally connects to PE2. into the base stat...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H04L45/24H04L45/247H04L45/28H04L45/50
CPCH04L12/24H04L45/28H04L41/0846H04L45/68H04L45/22H04L45/50H04W60/005
Inventor 常向青刘建锋姚民郜忠华赵里遥
Owner NEW H3C TECH CO LTD
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