Dual-homing protection switching method, device and system

A dual-homing protection and link switching technology, applied in the communication field, can solve problems such as slow service switching, interruption, and failure to notify in time, and achieve the effects of reducing impact, reducing the probability of unavailability, and improving reliability

Inactive Publication Date: 2010-09-08
ZTE CORP
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Problems solved by technology

[0004] During the specific implementation process, the inventors of the present invention found that in the VPLS environment, the AC access on the CE side cannot perceive the state of the VC, and when t

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  • Dual-homing protection switching method, device and system
  • Dual-homing protection switching method, device and system
  • Dual-homing protection switching method, device and system

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Embodiment Construction

[0036] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] refer to figure 1 , is a flowchart of an embodiment of a dual-homing protection switching method in the present invention;

[0038] In the embodiment of the present invention, in the VPLS environment, especially when there is a relatively long distance between the CE and the PE, and a transmission device is connected between the PE and the CE, the Ethernet OAM function is enabled between the CE and the PE ( Operation Administration and Maintenance) is the OAM discovery mechanism in IEEE802.3ah or the CFM function in IEEE 802.1ag. At the same time, the MC-LAG function or other modules with active / standby link switching functions are enabled on the CE (MC -LAG: Multi-chassisLink Aggregation Group cross-device link aggregation). In this embodiment, MC-LAG is used to provide link aggregation between devices. The ...

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Abstract

The invention discloses a dual-homing protection switching method. The method comprises the following steps that: when the state of bidirectional forwarding detection BFD of a pseudowire PW is DOWN, operator border equipment PE disables the Ethernet OAM function of a port connected with client border equipment CE; and CE which opens a trunking MC-LAG function of cross-equipment or other modules with a master-slave link switching function switches service flow to backup links of the MC-LAG or other modules with the master-slave link switching function. The invention also provides a corresponding device and a system. Ethernet OAM state association between the CE and the PE by tracking the PW BFD state on the PE; and association with the MC-LAG or other modules with the master-slave link switching function on the CE can achieve linkage of the PE side and the CE side. Therefore, the influence of network failure on service is reduced, the probability of service unavailability is reduced, and the reliability of the service is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a dual-homing protection switching method, device and system. Background technique [0002] In the current communication technology, more and more emphasis is placed on the reliability and fault handling capabilities of the communication network; that is, it is necessary to be able to quickly discover faults and quickly perform service protection switching, that is, to be able to quickly detect faults Switching from the active state to the standby state realizes the normal operation of the business. The IP (Internet Protocol, Internet Internet Protocol) network, especially the popular carrier-class Ethernet in recent years, puts the protection switching capability of the network at the forefront. The current bearer network adopts a variety of technologies to improve the detection speed of network faults and protection switching performance, thereby reducing the imp...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/26H04L12/56
CPCH04L43/0811H04L41/0668H04L41/0654
Inventor 李春红
Owner ZTE CORP
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