Failure detection and link recovery method based on bidirectional forward link

Abstract

The invention discloses a fault detection and link restore method which is based on a two-way forwarding link, including the following the steps of: configuring the linkage of the next hop of a strategy router and the BFD conversation; configuring the BFD detection parameters under the interfaces of routing equipment; establishing a BFD conversation: carrying out the consultation of BFD detection parameters between two parties after the up of the BFD conversation: generating the IP FRR main standby router; carrying out the BFD detection on a forwarding layer; being down for the forwarding layer after the detection of link overtime; carrying out the IP FRR switch the forwarding layer according to the strategy router configuration, so as to switch to a backup router and notice the application layer of the strategy router. The invention provides the fast and high efficient fault detection and restore method of the next hop of the forwarding layer, which can improve the reliability of the forwarding in the actual network environment, effectively solve the link frequent vibration which is caused by link fast switch, ensure the stability of the link and enrich the application of BFD protocol in the network detection simultaneously.

Description

technical field [0001] The invention relates to the technical field of IP network communication, in particular to a method for fault detection and link recovery based on bidirectional forwarding links. Background technique [0002] With the development of network communication technology, in order to ensure the quality of data transmission, the requirements for network equipment are getting higher and higher. It is required that communication failures between adjacent systems can be quickly detected, so that when a failure occurs, a backup link can be established faster link or switch to other links. But there is a lot of hardware and software that cannot provide such functionality. At present, the commonly used network detection method is implemented by using the Hello (handshake) mechanism, especially in routing protocols, but the detection time generally exceeds 1 second. [0003] In order to quickly discover and switch to other links when a fault occurs, the BFD (Bidir...

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to propose a method for fault detection and link recovery based on bidirectional forwarding links, so as to overcome the problem in the prior art that the failure of the next hop configured by policy routing cannot be quickly detected and recovered

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