Fault processing method, device and system

Abstract

The invention provides a fault processing method, device and system. The method comprises the following steps of: receiving a fault event reported by a first linkage module after the first linkage module detects that a main pseudo wire (PW) between local equipment and far-end equipment has a fault; according to a preset linkage mapping relation, announcing the fault event to a second linkage module in the far-end equipment, which is in linkage with the first linkage module, so that the second linkage module carries out fault processing according to the fault event. The invention also provides a fault linkage device, a fault processing device and a fault processing system. When a link at the local equipment side has a fault, the far-end equipment in the embodiment of the invention can senses the fault in time, millisecond scale switching of user flow is realized, and the phenomenon that transferring of the user flow is stopped can be avoided.

Description

technical field [0001] The present invention relates to communication technology, in particular to a fault handling method, device and system. Background technique [0002] With the deployment and development of pseudo-wire services by network operators, operators are paying more and more attention to the ability to quickly detect faults and protect services. When a network fault occurs, millisecond-level switching of services has become the goal pursued by various equipment suppliers. At present, operators use a variety of technologies to improve the detection speed of network faults and protection switching performance requirements, thereby reducing the impact of network faults on services and improving service reliability. Virtual Private Wire Service (hereinafter referred to as: VPWS) is fast Rerouting Fast Reroute (hereinafter referred to as: FRR) technology came into being for this demand. [0003] figure 1 It is a schematic diagram of VPWS FRR application scenarios ...

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Problems solved by technology

[0004] However, in the prior art, when the active PW fails, CE2 cannot detect the failure, and the user traffic in the direction from CE2 to CE1 cannot be switched to the backup PW, resulting in interruption of user traffic forwarding in this direction; similarly, when CE2 and PE2 When the inter-connection link fails, PE1 cannot perceive the failure of the access link (Attachment Circuit; AC for short), which causes the interruption of user traffic forwarding in this direction.

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