A realizing method for notifying downstream device in case of switch of uplink link status

Abstract

The invention discloses a method for notifying downstream equipment when switching the uplink status, comprising: configuring a tracking command in the uplink equipment of a route redundant backup system according to existing technology; binding the primary equipment of the route redundant backup system and the core router link as an uplink via the tracking command; binding the primary equipment and a standby equipment link as a downlink via the tracking command. By using the method for notifying downstream equipment when switching the uplink status provided by the invention, when error occurs in the upstream equipment or malfunction occurs in the upstream equipment link, the route redundant backup system can detect the status of the upstream equipment, in order to correctly configure the equipment according to VRRP to realize the primary-standby switching; thus, the open circuit error of the access layer equipment caused by error occurred in the uplink equipment can be prevented, and the anti-error ability of the route redundant backup system in actual network can be enhanced.

Description

technical field [0001] The invention relates to the technical field of route redundancy backup in equipment at the same level, in particular to a method for notifying downstream equipment when an uplink state is switched. Background technique [0002] With the rapid development of network scale and continuous improvement of network quality, network applications have higher and higher requirements for reliability, and various link protection mechanisms have emerged. At present, the VRRP protocol is commonly used in link protection, that is, the virtual routing redundancy protocol, which realizes the backup between devices at the same level of network layer, and mainly completes the basic routing redundancy backup function at the network layer. The election mechanism can quickly realize the backup switch when the equipment fails. For the general configuration, it takes 3-5 seconds, which can basically meet the uninterrupted demand of the business, and there is no special requi...

AI Technical Summary

Problems solved by technology

[0004] like figure 2 As shown, when the link of the upstream device fails, for example, the link between the S3 device and the core router is completely interrupted, the VRRP status of S1 and S2 will not change at this time, S1 is still the MASTER device, and the downstream device All the traffic of S1 leads to S1, but S1 has no way out to the core router, so the network of downstream users will be completely interrupted. Currently, there is no good solution to this problem in the existing technology

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