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<SwitchA> system-view 
[SwitchA] multicast routing-enable 
[SwitchA] interface vlan-interface 100 
[SwitchA-Vlan-interface100] igmp enable 
[SwitchA-Vlan-interface100] pim sm 
[SwitchA-Vlan-interface100] quit 
[SwitchA] interface vlan-interface 101 
[SwitchA-Vlan-interface101] pim sm 
[SwitchA-Vlan-interface101] quit 
[SwitchA] interface vlan-interface 102 
[SwitchA-Vlan-interface102] pim sm 
[SwitchA-Vlan-interface102] quit 
[SwitchA] interface loopback 0 
[SwitchA-LoopBack0] pim sm 
[SwitchA-LoopBack0] quit 
# Enable IP multicast routing, IGMP and PIM-SM on Switch B, Switch C and Switch D in the same 
way. (Details not shown.)  
# Configure a PIM domain border on Switch C. 
[SwitchC] interface vlan-interface 101 
[SwitchC-Vlan-interface101] pim bsr-boundary 
[SwitchC-Vlan-interface101] quit 
[SwitchC] interface vlan-interface 103 
[SwitchC-Vlan-interface103] pim bsr-boundary 
[SwitchC-Vlan-interface103] quit 
[SwitchC] interface vlan-interface 104 
[SwitchC-Vlan-interface104] pim bsr-boundary 
[SwitchC-Vlan-interface104] quit 
# Configure a PIM domain border on Switch A, Switch B and Switch D in the same way. (Details 
not shown.) 
4.  Configure C-BSRs and C-RPs: 
# Configure Loopback 0 as a C-BSR and a C-RP on Switch A.  
[SwitchA] pim 
[SwitchA-pim] c-bsr loopback 0 
[SwitchA-pim] c-rp loopback 0 
[SwitchA-pim] quit 
# Configure C-BSRs and C-RPs on Switch C and Switch D in the same way. (Details not shown.)  
5.  Configure MSDP peers: 
# Configure an MSDP peer on Switch A. 
[SwitchA] msdp 
[SwitchA-msdp] peer 192.168.1.2 connect-interface vlan-interface 101 
[SwitchA-msdp] quit 
# Configure MSDP peers on Switch C. 
[SwitchC] msdp 
[SwitchC-msdp] peer 192.168.1.1 connect-interface vlan-interface 101 
[SwitchC-msdp] peer 10.110.5.2 connect-interface vlan-interface 104