SRv6中基于故障信息的路径转移策略

Path transition strategy based on fault information in SRv6

针对解决在段路由网络中提供弹性保护以及段路由头中插入过多段标识等问题,提出一种基于故障信息的静态快速路径转移协议。设计快速故障检测机制,改进段路由头存储故障信息;提出路径对比筛选算法与映射段标识策略优化在段路由头中插入的段标识;提出拓扑路径对比策略,源节点判断自身是否存储当前网络拓扑下的转发路径,避免路径收敛计算过程。仿真结果表明,与对比协议相比,该协议在节点压缩率、控制开销和丢包率等网络性能方面均优于对比协议。

To solve the problems of providing elastic protection in segment routing network and inserting multiple segment identities in segment routing headers,a static fast path transfer protocol based on fault information was proposed.A fast fault detection mechanism was designed to improve the storage of fault information in segment routing headers.The path comparison filtering algorithm and mapping segment identification strategy were proposed to optimize the segment identification inserted in the segment routing header.A topology path comparison strategy was proposed to determine whether the source node stored the forwarding path under the current network topology to avoid path convergence calculation.Simulation results show that compared with the comparison protocol,the protocol is superior to the comparison protocol in terms of network performance such as node compression ratio,control overhead and packet loss rate.