ang=EN-US>4.1 组网需求SwitchA、SwitchB和SwitchC组成一个PIM-SM的组播网络，其中SwitchA连接组播源，SwitchB和SwitchC连接不同的接收者，接收者指定源加入。
如图1 所示：设备接口IP地址设备接口IP地址SwitchA Vlan-int100 10.10.1.1/24 SwitchC Vlan-int102 10.102.1.1/24 Vlan-int12 10.12.1.1/24 Vlan-int23 10.23.1.3/24Vlan-int13 10.13.1.1/24 Vlan-int13 10.13.1.3/24 SwitchB Vlan-int101 10.101.1.1/24Vlan-int12 10.12.1.2/24Vlan-int23 10.23.1.2/24图1 PIM SSM特性典型配置组网图4.2 配置思路●SwitchA、SwitchB和SwitchC上分别配置单播路由协议，使各设备和组播源、接收者之间路由可达；●SwitchA、SwitchB和SwitchC上分别使能组播路由协议，并配置各接口的PIM-SM协议，连接接收者的接口配置IGMPv3协议；●配置SSM组地址范围。
4.3 使用版本本举例是在S12500-CMW520-B1131版本上进行配置和验证的。
说明：本文的组网环境可能与您的实际环境存在差异。
为了保证配置效果，请确认设备上现有配置和以下配置不冲突。
4.4.1 设备A的配置1. 配置步骤(1)全局启动组播路由<SwitchA> system-view[SwitchA] multicast routing-enable(2)配置各接口及接口地址，并使能PIM SM# 配置连接组播源的接口及接口地址，使能PIM SM[SwitchA]vlan 100[SwitchA-vlan100]port GigabitEthernet3/0/1[SwitchA-vlan100]interface vlan 100[SwitchA-Vlan-interface100]ip address 10.10.1.1 24[SwitchA-Vlan-interface100]pim sm# 配置连接SwitchB的接口及接口地址，使能PIM SM[SwitchA]vlan 12[SwitchA-vlan12]port GigabitEthernet3/0/2[SwitchA-vlan12]interface vlan 12[SwitchA-Vlan-interface12]ip address 10.12.1.1 24[SwitchA-Vlan-interface12]pim sm# 配置连接SwitchC的接口及接口地址，使能PIM SM[SwitchA]vlan 13[SwitchA-vlan13]port GigabitEthernet3/0/3[SwitchA-vlan13]interface vlan 13[SwitchA-Vlan-interface13]ip address 10.13.1.1 24[SwitchA-Vlan-interface13]pim sm(3)配置SSM组地址范围[SwitchA]acl number 2000[SwitchA-acl-basic-2000]rule permit source 225.0.0.0 0.255.255.255 [SwitchA-acl-basic-2000]pim[SwitchA-pim]ssm-policy 2000(4)发布PIM接口单播路由[SwitchA]ospf 1[SwitchA-ospf-1]import-route direct[SwitchA-ospf-1]area 0.0.0.0[SwitchA-ospf-1-area-0.0.0.0]network 10.0.0.0 0.255.255.2552. 配置文件<SwitchA> display current-configuration#multicast routing-enable#acl number 2000rule permit source 225.0.0.0 0.255.255.255#interface Vlan-interface12ip address 10.12.1.1 255.255.255.0 pim sm#interface Vlan-interface13ip address 10.13.1.1 255.255.255.0 pim sm#interface Vlan-interface100ip address 10.10.1.1 255.255.255.0 pim sm#ospf 1import-route directarea 0.0.0.0network 10.0.0.0 0.255.255.255 #pimssm-policy 2000#4.4.2 设备B的配置1. 配置步骤(1)全局启动组播路由<SwitchB> system-view[SwtichB]multicast routing-enable(2)配置各接口及接口地址，并使能PIM SM# 配置连接SwtichA的接口及接口地址，使能PIM SM [SwitchB]vlan 12[SwitchB-vlan12]port GigabitEthernet3/0/2[SwitchB-vlan12]interface vlan 12[SwitchB-Vlan-interface12]ip address 10.12.1.2 24 [SwitchB-Vlan-interface12]pim sm# 配置连接SwtichC的接口及接口地址，使能PIM SM [SwitchB]vlan 23[SwitchB-vlan23]port GigabitEthernet3/0/3[SwitchB-vlan23]interface vlan 23[SwitchB-Vlan-interface23]ip address 10.23.1.2 24 [SwitchB-Vlan-interface23]pim sm# 配置连接HostA的接口及接口地址，使能PIM SM和IGMPv3 [SwitchB]vlan 101[SwitchB-vlan101]port GigabitEthernet3/0/1[SwitchB-vlan101]interface vlan 101[SwitchB-Vlan-interface101]ip address 10.101.1.1 24 [SwitchB-Vlan-interface101]pim sm[SwitchB-Vlan-interface101]igmp enable[SwitchB-Vlan-interface101]igmp version 3(3)配置SSM组地址范围[SwitchB]acl number 2000[SwitchB-acl-basic-2000]rule permit source 225.0.0.0 0.255.255.255 [SwitchB-acl-basic-2000]pim[SwitchB-pim]ssm-policy 2000(4)发布PIM接口单播路由[SwitchB]ospf 1[SwitchB-ospf-1]import-route direct[SwitchB-ospf-1]area 0.0.0.0[SwitchB-ospf-1-area-0.0.0.0]network 10.0.0.0 0.255.255.2552. 配置文件<SwitchB> display current-configuration#multicast routing-enable#acl number 2000rule permit source 225.0.0.0 0.255.255.255#interface Vlan-interface12ip address 10.12.1.2 255.255.255.0pim sm#interface Vlan-interface23ip address 10.23.1.2 255.255.255.0pim sm#interface Vlan-interface101ip address 10.101.1.1 255.255.255.0igmp enableigmp version 3pim sm#ospf 1import-route directarea 0.0.0.0network 10.0.0.0 0.255.255.255#pimssm-policy 2000#4.4.3 设备C的配置1. 配置步骤(1)全局启动组播路由<SwitchC> system-view[SwtichC]multicast routing-enable(2)配置各接口及接口地址，并使能PIM SM# 配置连接SwtichA的接口及接口地址，使能PIM SM [SwitchC]vlan 13[SwitchC-vlan13]port GigabitEthernet3/0/3 [SwitchC-vlan13]interface vlan 13[SwitchC-Vlan-interface13]ip address 10.13.1.3 24[SwitchC-Vlan-interface13]pim sm# 配置连接SwtichB的接口及接口地址，使能PIM SM[SwitchC]vlan 23[SwitchC-vlan23]port GigabitEthernet3/0/2[SwitchC-vlan23]interface vlan 23[SwitchC-Vlan-interface23]ip address 10.23.1.3 24[SwitchC-Vlan-interface23]pim sm# 配置连接HostB的接口及接口地址，使能PIM SM和IGMPv3协议[SwitchC]vlan 102[SwitchC-vlan102]port GigabitEthernet3/0/1[SwitchC-vlan102]interface vlan 102[SwitchC-Vlan-interface102]ip address 10.102.1.1 24[SwitchC-Vlan-interface102]pim sm[SwitchC-Vlan-interface102]igmp enable[SwitchC-Vlan-interface102]igmp version 3(3)配置SSM组地址范围[SwitchC]acl number 2000[SwitchC-acl-basic-2000]rule permit source 225.0.0.0 0.255.255.255 [SwitchC-acl-basic-2000]pim[SwitchC-pim]ssm-policy 2000(4)发布PIM接口单播路由[SwitchC]ospf 1[SwitchC-ospf-1]import-route direct[SwitchC-ospf-1]area 0.0.0.0[SwitchC-ospf-1-area-0.0.0.0]network 10.0.0.0 0.255.255.255 2. 配置文件<SwitchC> display current-configuration#multicast routing-enable#acl number 2000rule permit source 225.0.0.0 0.255.255.255#interface Vlan-interface13ip address 10.13.1.3 255.255.255.0pim sm#interface Vlan-interface23ip address 10.23.1.3 255.255.255.0pim sm#interface Vlan-interface102ip address 10.102.1.1 255.255.255.0igmp enableigmp version 3pim sm#ospf 1import-route directarea 0.0.0.0network 10.0.0.0 0.255.255.255#pimssm-policy 2000#4.5 验证结果按照如上配置，SwitchA、SwitchB、SwitchC两两之间建立PIM邻居关系，HostA 进行源为10.10.1.2组为225.1.1.1的IGMPv3加入后能生成SG的PIM Routing 表项。