Method and processor for detecting bi-directional forwarding detection session state

Abstract

A method and processor for detecting bi-directional forwarding detection session state is provided. The processor comprises a control core and a forwarding core. The control core acquires the timeouttime of the established BFD session agreement between the first network device and the second network device and outputs the timeout time to the forwarding core. According to the timeout time length and the time length of generating the timing interrupt instruction, in a virtual linked list, the forwarding core determines a first timing node carried by a timer corresponding to the BFD session, thevirtual link list structure represents a timing interrupt instruction, and at least one timer is carried on every certain time node of the virtual link list, each timer corresponds to the establishedBFD session one by one, and the time step between adjacent timing nodes is the time length during which the timing interrupt instruction is generated; The forwarding core is also used for detecting the state of the BFD session corresponding to the timer carried on the timing node corresponding to the timing interrupt instruction when the timing interrupt instruction is generated. Therefore, thatefficiency 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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