Method for accelerating PBT tunnel failure fast switching

Abstract

A method for quickening rapid switch of faults in a provider backbone transport (PBT) tunnel, relating to PBT tunnel fault handling, comprises the following steps: (101) a wire card real-time collecting tunnel fault information in a batch size, and encapsulating into a data packet; (102) the wire card reports the data packet to a master control panel card; (103) the master control panel card receives the data packet and carrying fault handling, generates tunnel fault switch messages, and storing in a tunnel switch message base; (104) the master control panel card dispatches the switch messages to all fault-related wire cards in a batch size after processing all data in a data packet; and (105) all fault-related wire cards receive the switch messages and write into switch operations conducted by a hardware list in a batch size. Through collection and report of tunnel faults in a batch size and dispatch and write-in of tunnel switch messages in a batch size, the method can ensure 50 millisecond switch time even in the case of failure in multiple PBT tunnels at the same time, does not occupy oversized CPU and management pathway resources, and is easy to implement and expand.

Description

technical field [0001] The invention relates to PBT tunnel fault processing, in particular to a method for accelerating fast switching of PBT tunnel faults. Background technique [0002] With the development and maturity of PBT technology (Provider Backbone Transport, operator backbone transport), it is a problem to be solved to provide a protection switching time of less than 50 milliseconds for multiple PBT tunnels. The current PBT tunnel fault handling scheme is as follows: when a fault occurs, the line card reports the fault tunnel information to the main control board one by one through the management channel, and the main control board receives and processes the reported single faulty tunnel information and generates the corresponding tunnel Switching information, and then the main control board sends the switching information of a single faulty tunnel to all line cards associated with the fault through the management channel to perform the switching operation. In thi...

AI Technical Summary

Problems solved by technology

This PBT tunnel fault protection switching method not only consumes the management bandwidth but also increases the protection switching delay. When the number of PBT tunnels is small, the protection switching time can be less than 50 milliseconds. If the number of PBT protection tunnels increases, the corresponding fault switching time It will also increase, unable to meet the protection switching time requirement of less than 50 milliseconds, so there is a certain limit on the number of PBT tunnels

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