Method and device for BFD protection by utilizing multiple board cards

Abstract

The invention provides a method for BFD (Bidirectional Forwarding Detection) protection by utilizing multiple board cards. The method, applied to BFD equipment, includes the following steps: arranging a main service processing board card and at least one standby service processing board card; detecting whether the main service processing board card is off line, and then switching one of the standby service processing board cards into a new main service processing board card if the main service processing board card is off line; receiving a BFD message and a non-BFD common IP forwarding message from an interface card; and sending the BFD message to the new main service processing board card and other standby service processing board cards at the same time, and sending the non-BFD common IP forwarding message to the new main service processing board card. The invention also provides a device for BFD protection by utilizing multiple board cards. The beneficial effects of the method for BFD protection by utilizing multiple board cards are that interboard protection can be performed on BFD in a rapid, highly efficient and stable manner to ensure that services are not interrupted.

Description

technical field [0001] The invention relates to the field of bidirectional transmission detection, in particular to a method and equipment for protecting BFD (Bidirectional Forwarding Detection, bidirectional forwarding detection) by using multiple boards. Background technique [0002] With the development of science and technology and the times, Ethernet technology has gradually become an important technical means for social production and office work. In particular, with the rapid growth of smart terminal holdings, the mobile Internet industry is also becoming increasingly mature. The wireless network is developing towards an All-IP (All-IP) network, which requires the aggregation layer equipment to have a large capacity and a fast service recovery mechanism to ensure that the service will never be interrupted and highly reliable. Traditional Ethernet aggregation layer devices are usually equipped with one service processing board and multiple service interface cards, whi...

AI Technical Summary

Problems solved by technology

When the service board of the aggregation layer device fails, all services connected to it will be interrupted

At the same time, a single service processing board will cause service interruption when upgrading the aggregation layer equipment

[0003] For this reason, there have been some inter-board protection technologies, such as LAG (LinkAggregationGroup, Link Aggregation Group), but this protection technology has some bottlenecks and defects, it can only protect the relevant business traffic on the device, and for the BFD Detect traffic and alarm, can't handle it well

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