华为认证VRP特性描述-IP业务---组播VPN部分技术文档 华为IP...

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6 组播VPN.....................................................................................................................................6-1
6.1 简介..............................................................................................................................................................6-2
6.1.1 MPLS/BGP VPN 概述........................................................................................................................6-2
6.1.2 在VPN 中运行组播业务...................................................................................................................6-3
6.2 VRP 上的MD VPN......................................................................................................................................6-5
6.2.1 VRP 上的MD VPN 基本原理............................................................................................................6-5
6.2.2 MD VPN 中的组播报文.....................................................................................................................6-7
6.2.3 CE、PE 和P 之间的PIM 邻居关系..................................................................................................6-7
6.3 MD VPN 实现机制......................................................................................................................................6-8
6.3.1 创建Share-MDT ................................................................................................................................6-8
6.3.2 基于Share-MDT 的MT 传输过程.................................................................................................6-10
6.3.3 Switch-MDT 切换.............................................................................................................................6-13
6.4 MD VPN 常见应用....................................................................................................................................6-15
6.4.1 单自治域MD VPN..........................................................................................................................6-15
6.4.2 跨自治域MD VPN..........................................................................................................................6-15
6.5 参考资料清单............................................................................................................................................6-17
图6-1 MPLS/BGP VPN 典型应用.....................................................................................................................6-2
图6-2 公网组播................................................................................................................................................6-3
图6-3 VPNA 组播..............................................................................................................................................6-4
图6-4 VPNB 组播..............................................................................................................................................6-4
图6-5 私网数据传输过程示意图.....................................................................................................................6-6
图6-6 MD 方案中CE、PE 和P 的邻居关系..................................................................................................6-8
图6-7 在PIM-SM 网络中创建Share-MDT....................................................................................................6-9
图6-8 在PIM-DM 网络中创建Share-MDT..................................................................................................6-10
图6-9 组播协议报文的传递过程...................................................................................................................6-12
图6-10 组播数据报文的传递过程.................................................................................................................6-13
图6-11 单自治域MD VPN ............................................................................................................................6-15
图6-12 VPN 实例-VPN 实例跨自治域MD VPN..........................................................................................6-16
图6-13 Multihop EBGP 跨自治域MD VPN ..................................................................................................6-16
表6-1 MPLS/BGP VPN 中各设备的功能.........................................................................................................6-2
表6-2 MD VPN 中的组播报文.........................................................................................................................6-7

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