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Implementation method, device and system of BFD state machine

An implementation method and a technology of a state machine, applied in the field of communication, can solve the problem that the chip cannot adapt to changes, and achieve a flexible effect

Active Publication Date: 2015-08-05
RAISECOM TECH
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Problems solved by technology

[0013] The purpose of the embodiment of the present invention is to provide a BFD state machine implementation method, device and system, which are used to solve the problem that the chip used to realize the BFD function in the existing BFD state machine implementation mode cannot adapt to the change of the BFD state machine definition question

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  • Implementation method, device and system of BFD state machine
  • Implementation method, device and system of BFD state machine

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Embodiment Construction

[0063] The method, device and system for implementing a BFD state machine provided by the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0064] like Figure 5 As shown, an embodiment of the present invention provides a method for implementing a BFD state machine, and the specific implementation steps are as follows:

[0065] Step 510: Obtain BFD state machine hopping information, where the BFD state machine hopping information includes protocol identification information of the local BFD state machine, current local BFD status, peer BFD status, and information on whether the local BFD session has timed out.

[0066] The local BFD state is the BFD session state of the local device. The peer BFD state is the BFD session state of the peer device that establishes a session with the local device. The jump information of the BFD state machine can also be added with other information related to the BFD state a...

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Abstract

An embodiment of the invention discloses an implementation method, device and system of a BFD state machine. The method includes: obtaining jump information of a BFD state machine, the jump information of the BFD state machine including a home terminal BFD state machine protocol identifier information, a current home terminal BFD state, an opposite terminal BFD state and information about whether a home terminal BFD conversation is overtime; searching for a jumping relation corresponding to the home terminal BFD state machine protocol identifier information, the current home terminal BFD state, the opposite terminal BFD state and the information about whether the home terminal BFD conversation is overtime from jumping relations stored in a read-write storage unit; and jumping the current home terminal BFD state to a target home terminal BFD state included in the jumping relation according to the jumping relation that is found. The jumping relations of the BFD state machine in the read-write storage unit of a read-write memory can be modified, and implementation of the BFD state machine is more flexible.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method, device and system for implementing a BFD state machine. Background technique [0002] Bidirectional Forwarding Dection (BFD) is a method proposed by the Internet Engineering Task Force (IETF) for Multi Protocol Label Switching (MPLS) and Internet Protocol (IP) It has the advantages of high detection accuracy, low overhead and high operating efficiency, independent of the underlying medium and upper-layer protocols, and is suitable for path detection between physical or logical interfaces, data links and forwarding engines. . [0003] Generally, BFD is implemented by sending BFD packets periodically on the path of two devices that communicate with each other. Path failed. [0004] The basic protocol of BFD, Request For Comments (RFC) 5880 (customized in 2010), defines four session states: initialization (init), establishment (up), session teardow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
CPCH04L67/142
Inventor 王震贺彦军张宇
Owner RAISECOM TECH
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