Method and device for routing information synchronization

Abstract

The present application discloses a method for synchronizing routing information. The method includes: any router determines the priority of routing information update packets to be flooded through a configured priority policy, and floods routing information update packets with higher priorities first. file, so that each neighbor router performs route calculation according to the priority policy configured locally. Based on the same inventive idea, this application also proposes a device that can synchronize high-priority routing information to neighbor routers first, and then make high-priority traffic converge first.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a method and device for routing information synchronization. Background technique [0002] An important indicator for measuring unicast routing protocols is the fast convergence of routes. Unicast routing protocols include Open Shortest Path First (OSPF) protocol, intermediate system to intermediate system (IS-IS) protocol, routing information protocol (Routing Information Protocol, RIP), border gateway protocol (border gateway protocol, BGP). With the development of services, higher requirements are put forward for the convergence of unicast routing, and different services require convergence according to priority. [0003] The processing procedures of each unicast routing protocol are similar. The IS-IS protocol is used as an example to illustrate the priority convergence process of different traffic. see figure 1 , figure 1 It is a schematic diagram o...

AI Technical Summary

Problems solved by technology

However, when R4 floods the received routing information on R2 and R3 to R1, R1 will not receive all the routing information on R2 and R3 at the same time, and then process the routing information received at that time according to the service priority When calculating, routes cannot be calculated first for high-priority services, and high-priority service traffic may not be sent first.

[0008] It can be seen from the above that the received routing information can only be calculated according to the priority on the directly connected device, and for the non-directly connected device, since the routing information needs to be flooded, in practical applications, it cannot be prioritized. High routing information is used for routing calculations, so traffic with higher priority cannot be sent first.

Images