IPv6演进技术要求　 第5部分：基于IPv6段路由（SRv6）的 虚拟专用网（VPN） IPv6 evolution technical requirements— Part 5：SRv6﹘based VPN  ICS  33.040.40 CCS  L 78   中华人民共和国国家标准 GB/T 44887.5—2024 2024-11-2 8发布 2025-03-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 引言   ·····································································································   Ⅳ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     缩略语   ································································································   1 5     基于SRv6的VPN网络技术架构   ·····································································   2 6     SRv6服务TLV技术要求   ·············································································   3      6.1     SRv6服务TLV   ··················································································   3      6.2     SRv6服务子TLV   ················································································   4      6.3     SRv6 SID信息子TLV   ···········································································   4      6.4     SRv6服务数据Sub﹘Sub﹘TLV   ····································································   5      6.5     SRv6 SID结构Sub﹘Sub﹘TLV   ····································································   5 7     基于SRv6 VPN网络的三层服务   ·····································································   6      7.1     三层服务实现机制   ···············································································   6      7.2     IPv4 VPN服务   ···················································································   7      7.3     IPv6 VPN服务   ···················································································   7      7.4     全球可寻址IPv4服务   ············································································   7      7.5     全球可寻址IPv6服务   ············································································   8 8     基于SRv6 VPN网络的二层服务   ·····································································   8      8.1     二层服务实现机制   ···············································································   8      8.2     以太网自动发现路由   ·············································································   9      8.3     MAC/IP 通告路由   ···············································································   9      8.4     泛组播以太网标签路由   ·········································································   10      8.5     以太网分段路由   ················································································   11      8.6     IP前缀路由   ·····················································································   11      8.7     EVPN组播路由   ················································································   12 9     协议消息错误的处理   ················································································   12 参考文献   ································································································   13 GB/T 44887.5—2024     Ⅰ