Communication fault detection method and system based on two-way forwarding detection protocol

A bidirectional forwarding detection and communication failure technology, applied in wireless communication, wireless network protocols, electrical components, etc., can solve problems such as failure of business traffic packets and failure to detect packets

Inactive Publication Date: 2010-04-21
ZTE CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0018] In view of this, the present invention provides a communication fault detection scheme based on the bidirectional forwarding detection protocol, which is used to solve the problem that the BFD d

Method used

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  • Communication fault detection method and system based on two-way forwarding detection protocol
  • Communication fault detection method and system based on two-way forwarding detection protocol
  • Communication fault detection method and system based on two-way forwarding detection protocol

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Embodiment Construction

[0035] Functional Overview

[0036] According to the technical solution provided by the embodiment of the present invention, the communication device sends keep-alive messages with different message lengths according to the preset sending cycle, sending rules, and message length change gradient, so as to detect whether a communication failure occurs on the communication link, And according to the message length of the received keep-alive message, determine the specific message length of the traffic message in which the communication failure occurs, wherein the sent keep-alive message is based on the definition of the BFD protocol, and the length of the keep-alive message is not less than The standard BFD protocol controls the length of packets.

[0037] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0038] The preferred embodiments of the present invention will be described below in...

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Abstract

The invention discloses communication fault detection method and system based on a two-way forwarding detection protocol. In the method, local-end equipment in equipment at both ends of the intercommunication of a BFD protocol is configured in advance, and a plurality of live keeping messages based on the BFD protocol are transmitted to opposite-end equipment, wherein the message lengths of the live keeping messages are different and are within the range of a preset length; if the opposite-end equipment does not receive the live keeping messages from the local-end equipment in the preset overtime, a condition that a communication fault occurs in a communication link between the opposite-end equipment and the local-end equipment is determined, and the length range of the messages in which the communication fault occurs is determined according to the message lengths of the live keeping messages which are already received. According to the technical scheme provided by the invention, the problem that a condition whether the communication fault occurs in flow messages of which the message lengths are different from the lengths of standard BFD live keeping messages in the forwarding process or not can not be detected by a BFD detection mechanism in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a communication fault detection method and system based on a bidirectional forwarding detection protocol. Background technique [0002] In the field of data communication technology, in order to have carrier-class reliability, the network is required to quickly self-heal when a fault occurs to ensure that the business will not be interrupted. Therefore, detection technology is required to quickly detect network faults and quickly make routing or link switching. [0003] In the prior art, the detection mechanism of sending HELLO (a message for detecting link) messages is usually used to detect network failures, but the detection time of HELLO messages is generally greater than 1 second. For some special application detection If the time is too long, it is impossible to detect and discover the link state that occurs in a short period of time, and when the routing proto...

Claims

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Application Information

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IPC IPC(8): H04W24/04H04W80/00
Inventor 吴万涛张磊韦红波
Owner ZTE CORP
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