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Active and standby card switching protection system and bidirectional forwarding detection seamless switching method and device

A bidirectional forwarding detection and seamless switching technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as BFD session interruption and restart, and achieve the effect of avoiding changes and improving stability

Active Publication Date: 2015-09-30
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the BFD session is interrupted and restarted due to the abnormal state of the BFD session when the routing device is switching between the active and standby boards.

Method used

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  • Active and standby card switching protection system and bidirectional forwarding detection seamless switching method and device
  • Active and standby card switching protection system and bidirectional forwarding detection seamless switching method and device

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Embodiment Construction

[0017] The present invention provides a two-way forwarding detection seamless switching method and device when the main and standby boards are switched and protected. figure 1 The switch protection system shown in the existing BFD routing equipment has been improved, and a high-speed communication channel is set between the active and standby boards of the routing equipment, which can quickly and real-time switch the BFD session on the active board to The state copy is refreshed to the standby board, so the BFD session can not be interrupted when the main board and the standby board are switched, avoiding the change of the network route, and improving the stability of the switching of the routing device.

[0018] The bidirectional forwarding detection seamless switching method when the active and standby boards are switched and protected by the present invention comprises the following steps:

[0019] The two-way forwarding detection BFD session information on the active board...

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Abstract

The invention discloses a master and backup board card changeover protection system, and a bidirectional forwarding detection (BFD) seamless handover method and a BFD seamless handover device. The method comprises the following steps: BFD session information on a master board card is copied and refreshed on a backup board card in real time; and after the master board card and the backup board card are subjected to changeover protection, the backup board card and the adjacent system perform BFD session with the refreshed BFD session information. A high-speed communication channel is arranged between the master board card and the backup board card of routing equipment, so the BFD session state on the master board card can be copied and refreshed on the backup board card quickly in real time. After the master board card and the backup board card are subjected to changeover protection, the backup board card and the adjacent system perform BFD session with the refreshed BFD session information, so that the problems of BFD session interruption and restart caused by the abnormal BFD session state on the master board card and the backup board card are solved, the BFD session is not interrupted during changeover of the master board card and the backup board card, the change of the network routing state is avoided and the stability of the routing equipment is improved.

Description

technical field [0001] The invention relates to a bidirectional forwarding detection technology, in particular to a master and standby card switching protection system and a bidirectional forwarding detection seamless switching method and device. Background technique [0002] With the continuous improvement of information network capacity and speed, the stability and reliability of network connections are becoming more and more important. In order to meet this demand, Bidirectional Forwarding Detection (BFD) technology was created. BFD is a simple "Hello" protocol. After the adjacent systems establish a connection relationship through BFD technology, they periodically send detection messages to each other on the session channel established between them. If no detection message from the opposite end is received within a certain period of time, it is considered that a failure has occurred on this two-way session channel, which can be a label switching path, other types of tun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/70H04L45/28
Inventor 胡晓君吴清坚汤岚
Owner FENGHUO COMM SCI & TECH CO LTD
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