Method for restarting virtual router redundancy protocol and router

Abstract

The embodiment of the invention discloses a restarting method of virtual router redundancy protocol. The method includes: setting a first interval that is a time limit parameter of elegant restarting negotiation; sending elegant restarting inquiry message to other routers for starting pre-set elegant restarting negotiation function, and starting timing service for starting time counting; executing router state setting operation according with elegant restarting negotiation inquiry result of other routers in first interval, the router state is a parameter for representing present state of local router in router group. Consequently, the embodiment of the invention also discloses a router. The embodiment of the invention can reduce user operation short interruption caused by state switching and increase serviceability of backup router device through elegant negotiation between router rearranged by main-service main control board and assistant-service main control board and other routers.

Description

technical field [0001] The invention relates to the communication field, in particular to a restart method of a virtual router redundancy protocol and a router. Background technique [0002] Usually, in the communication between the internal network and the external network, all the hosts in the internal network set the same default route, and all the packets sent by the internal hosts with destination addresses not in the network segment will be sent to the egress gateway through the default route. The implementation can be a router, or a device with a router function, such as a layer 3 switch or some servers, so as to realize the communication between the host and the external network. However, once the device fails, all hosts in the network segment that use this device as the default route will interrupt the communication with the outside world. Therefore, this method puts forward high requirements on the stability of the default gateway device. Adding multiple egress ga...

AI Technical Summary

Problems solved by technology

The switching process between the main control board and the standby main control board and the switching process between the active router and the message processing are often busy. If the sent free ARP entry message is blocked or processed abnormally, you must wait for the subsequent message to refresh the downstream switch. MAC (Media Access Control, Media Access Control) entry, during this period will cause user packets to be discarded and user services to be interrupted. If there are multiple handovers, the system will be more busy and user services will be more unstable. At the same time, it will affect other protocols. normal operation

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