Path detection method and device

A path detection and timeout detection technology, applied in the field of communication, can solve problems such as bidirectional forwarding detection failure, unstable traffic, link oscillation, etc.

Inactive Publication Date: 2011-04-20
ZTE CORP
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Problems solved by technology

[0005] The embodiment of the present invention provides a path detection method and device, which are used to solve the problems of bidirectional forwarding de...

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Embodiment Construction

[0021] The embodiment of the present invention provides a path detection method and device, which are used to solve the problems of bidirectional forwarding detection failure during active / standby switchover of a main control board on a network device, resulting in link oscillation and traffic instability.

[0022] In the embodiment of the present invention, when the active-standby switchover between the main board and the standby board of the main control board of the network device starts, the network device at the switching end stops the BFD timeout detection, and immediately notifies the peer network device to stop the BFD timeout detection, and waits for the active-standby switchover At the end, the network equipment at the switching end resumes the BFD timeout detection, and notifies the peer network equipment to resume the BFD timeout detection, which solves the problems of BFD detection failure in the past active / standby switching process, which caused the link between n...

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Abstract

The invention discloses a path detection method and a device, which can be used for solving the problems of link oscillation and unstable flow caused by bidirectional forwarding detection failure in the active/standby switchover process of a master control board on network equipment. The path detection method of the invention comprises the steps of: periodically sending bidirectional forwarding detection (BFD) control message to opposite terminal network equipment by local network equipment, and performing BFD overtime detection; and when the local network equipment needs to perform active/standby switchover between the master board and the standby board of the master control board, stopping the BFD overtime detection of the local network equipment, and notifying the opposite terminal network equipment to stop the BFD overtime detection, wherein the BFD overtime detection means to detect whether the BFD message sent by the opposite terminal network equipment is received within the preset time.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a path detection method and device. Background technique [0002] In the field of IP network communication, the Bidirectional Forwarding Detection (BFD, Bidirectional Forwarding Detecting) protocol provides a general standardized fast fault detection mechanism independent of medium and protocol. [0003] BFD establishes a session on two network devices to detect bidirectional forwarding paths between network devices and serve upper-layer applications. After a session is established, network devices will periodically and quickly send BFD packets to each other and perform BFD timeout detection. That is, if a network device does not receive a BFD packet from the peer network device within the detection If the bidirectional forwarding path between the network devices fails, notify the served upper layer application to handle accordingly. [0004] Generally, during ...

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Application Information

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IPC IPC(8): H04L12/26H04L12/24
Inventor 刘星梁堃
Owner ZTE CORP
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