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Method and apparatus for uninterrupted forwarding of bi-directional forwarding detection in master-slave switch implementation

A technology of bidirectional forwarding detection and active/standby switching, which is applied in the field of IP network communication, can solve problems such as traffic instability, avoid route switching, avoid link vibration problems, and realize the effect of uninterrupted forwarding

Active Publication Date: 2014-11-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention enhances the reliability of the distributed router, sends messages through the line card to maintain the session state at the forwarding level, avoids unnecessary routing switching, and solves the problem of unstable traffic when the distributed router is switched over in active and standby mode

Method used

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  • Method and apparatus for uninterrupted forwarding of bi-directional forwarding detection in master-slave switch implementation
  • Method and apparatus for uninterrupted forwarding of bi-directional forwarding detection in master-slave switch implementation
  • Method and apparatus for uninterrupted forwarding of bi-directional forwarding detection in master-slave switch implementation

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Embodiment Construction

[0058] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0059] The device for realizing the uninterrupted forwarding of the bidirectional forwarding detection packet in the master-standby switchover of the present invention is mainly composed of a switchover end and an opposite end.

[0060] Among them, the switching end is used to notify the opposite end that the bidirectional forwarding detection session management of the switching end is invalid during the active / standby switching, and suspend the bidirectional forwarding detection session of the switching end; and is used to create a new bidirectional forwarding to the opposite end when the active / standby switching ends Detect sessions and initiate packet negotiation;

[0061] The opposite end is used to suspend the bidirectional forwarding detection session of the local end according to the management failure status information of the switching end du...

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PUM

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Abstract

The invention discloses a method for realizing no interrupted forwarding of bidirectional forwarding detection (BFD) packet in an active / standby changeover, which is applied to the technical field of IP network communication; when the active / standby changeover is carried out, the changeover terminal notifies the opposite terminal, and the BFD session management of the changeover terminal fails; the BFD session between the changeover terminal and the opposite terminal is stopped temporarily; after the active / standby changeover ends, the changeover terminal establishes a new BFD session to the opposite terminal, and the BFD session from the changeover terminal to the opposite terminal takes effect. The invention also provides a device for realizing no interrupted forwarding of BFD packet in the active / standby changeover, so as to realize no interrupted forwarding in the active / standby changeover supported by BFD.

Description

technical field [0001] The present invention relates to the technical field of IP network communication, in particular to a method and a device for realizing BFD (Bidirectional Forwarding Detection, Bidirectional Forwarding Detection) supporting non-stop forwarding (NSF, NoStop Forwarding). Background technique [0002] In network communication, in order to select the fastest and best forwarding path faster and better, the demand for fast detection of communication failure between adjacent systems is increasing, and it is becoming more and more important. [0003] In the absence of hardware signal transmission, in previous routing protocols, the detection mechanism of sending HELLO (a message for detecting link) messages is usually used, but under the detection mechanism of HELLO messages, detection The time is generally greater than 1 second, but this time is too long for some special applications, and it is impossible to detect and discover the link state that occurs in a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/24H04L45/28
Inventor 张磊韦红波何辉
Owner ZTE CORP