Method and Processor for Detecting Bidirectional Forwarding Path Detecting Session State

Abstract

The present application provides a method and a processor for detecting a bidirectional forwarding path detection session state. The processor includes a control core and a forwarding core; the control core obtains the timeout period agreed upon by the established BFD session between the first and second network devices and outputs it to the forwarding core; the forwarding core bases on the timeout period and the time period for generating a timing interrupt command , in the virtual linked list, determine the first timing node carried by the timer corresponding to the BFD session, the virtual linked list structure represents a timing interrupt instruction, and each timing node constituting the virtual linked list carries at least one timer, each timer and The established BFD sessions have one-to-one correspondence, and the time step between adjacent timing nodes is the duration of generating a timing interrupt instruction; the forwarding core is also used to, when a timing interrupt instruction is generated, send the corresponding timing node to the timing interrupt instruction. The BFD session corresponding to the carried timer performs state detection. In this way, the efficiency of BFD session state detection can be improved.

Description

technical field

[0001] The present application relates to the technical field of communication detection, in particular, to a method and a processor for detecting a bidirectional forwarding path detection session state. Background technique

[0002] In order to reduce the impact of network equipment failure on the business of the communication system and improve the reliability of the communication system, the network equipment needs to be able to detect communication failures with adjacent network equipment as soon as possible, so that the communication system can take business switching measures in time to ensure that the business continues .

[0003] Bidirectional Forwarding Detection (English: Bidirectional Forwarding Detection, BFD for short) provides a general and standardized medium-independent and protocol-independent fast fault detection mechanism. For each upper-layer protocol, for example, Open Shortest Path First (English: Open Shortest Path First, referred to a...

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