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Method and device for preventing BFD (bidirectional forwarding detection) conversation interruption

A technology of equipment and peer equipment, applied in the field of communication, can solve problems such as standby board switching, BFD session interruption, etc., and achieve the effect of avoiding adverse effects

Active Publication Date: 2011-10-19
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The present invention provides a method and device for preventing BFD session interruption, which is used to solve the problem in the prior art that the backup single board cannot be switched to the main single board in time after the failure of the current main single board, which further leads to the interruption of the BFD session

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  • Method and device for preventing BFD (bidirectional forwarding detection) conversation interruption
  • Method and device for preventing BFD (bidirectional forwarding detection) conversation interruption

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Embodiment Construction

[0052] As described in the background technology, in the process of switching the main board of the existing OAM equipment, the detection of the main board needs to be completed by the main control board, and multiple IPC communications are required, and all communications and table entries need to be After the change is completed, the standby board can be switched to the main board to continue the corresponding OAM session. The completion time of the above process is often longer than the response time requirement of the OAM session fast detection mechanism (BFD packet detection mechanism). , the peer device may interrupt the corresponding OAM session because it cannot receive the BFD packet sent by the OAM device in time, reducing the reliability and stability of the OAM service.

[0053] In order to solve such problems, the present invention proposes a method for preventing BFD session from being interrupted, and establishes a fast connection detection mechanism between the ...

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Abstract

The invention discloses a method and device for preventing BFD (bidirectional forwarding detection) conversation interruption. By establishing a quick connecting and detecting mechanism between a main veneer and a standby veneer of an OAM (operation administration and maintenance) device, the standby veneer can quickly detect the failure of the main veneer, thus preferably opening the OAM sendingfunction of the standby veneer; therefore, the equipment at the opposite end does not interrupt the BFD conversion owning to the shifting of main veneer in the OAM equipment of the current end; afterthe relative item shifting is completed at the OAM equipment of the current end in the message receiving direction, the standby veneer opens the OAM receiving function and informs the OAM equipment to shift the standby veneer as the main veneer. By applying the technical scheme, the OAM conversion and the BFD conversion at two sides can always be kept in a connected state, thus avoiding the disadvantageous influence of the shifting of the main veneer on the stability of the business.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for preventing BFD session interruption. Background technique [0002] In order to protect key applications, certain redundant backup links are designed in the network. When a network failure occurs, network devices are required to quickly detect the failure and switch traffic to the backup link to speed up network convergence. [0003] At present, for the application of OAM (Operations, Administration and Maintenance, operation, management and maintenance), there are many related rapid detection protocols have been designed, such as 802.1ag / RRPP (Rapid Ring Protection Protocol, fast ring protection protocol) / BFD (Bidirectional Forwarding Detection, bidirectional forwarding detection) protocol, etc. [0004] The BFD protocol provides a general and standardized medium-independent and protocol-independent fast fault detection mechanism. The BFD...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/56H04L45/28
Inventor 王明辉刘兴兵
Owner NEW H3C TECH CO LTD
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