SRv6 技术白皮书

didibird

技术背景与分析...........................................................................................................................................6
1.1 产生背景...........................................................................................................................................6
1.2 技术特点...........................................................................................................................................6
2 SRv6 技术实现............................................................................................................................................7
2.1 概述...................................................................................................................................................7
2.1.1 SRH 封装.................................................................................................................................7
2.1.2 Segment 类型................................................................................................................................. 9
2.1.3 SRH 中的安全字段....................................................................................................................... 10
2.2 SR 域内部署模型...........................................................................................................................10
2.3 SRv6-TE 路径的建立.................................................................................................................... 11
2.4 报文沿SRv6-TE 路径的转发流程.............................................................................................. 12
2.5 L3VPN over SRv6......................................................................................................................... 13
2.5.1 L3VPN over SRv6-plain（SRv6 BE)................................................................................14
2.5.2 L3VPN over SRv6-TE..........................................................................................................14
2.6 EVPN over SRv6...........................................................................................................................15
2.7 SRv6 Policy.................................................................................................................................... 16
2.8 基于SR 转发机制的TI-LFA........................................................................................................17
2.9 基于SR 转发机制的微环避免..................................................................................................... 18
2.10 SRv6 Ping/Trace-route...............................................................................................................19
2.10.1 SRv6 Ping..........................................................................................................................20
2.10.2 SRv6 Trace-route............................................................................................................ 22
2.11 SRv6 SRH 优化...........................................................................................................................23
3 SRv6 的典型应用及应用现状.................................................................................................................... 24
3.1.1 SRv6 的典型应用......................................................................................................................... 24
3.1.1.1 L2/3 VPN over SRv6 BE............................................................................................... 24
3.1.1.2 L2/3 VPN over SRv6 TE（SRv6 Policy）..................................................................25
3.1.1.3 SRv6 与SR-MPLS 的互联............................................................................................26
3.1.2 SRv6 的应用现状......................................................................................................................... 28
4 总结和客户价值.........................................................................................................................................28
5 术语及缩略语.............................................................................................................................................29