207
Vlan100 0 30 1 10.110.1.1 (local)
Vlan101 1 30 1 192.168.1.2
Vlan102 1 30 1 192.168.9.2
Assume that Host A needs to receive the information a specific multicast source S 10.110.5.100/24 sends
to multicast group G 232.1.1.1. Switch A builds an SPT toward the multicast source. Switches on the SPT
path (Switch A and Switch D) have generated an (S, G) entry, but Switch E, which is not on the SPT path,
does not have multicast routing entries. You can use the display pim routing-table command to view the
PIM routing table information on each switch. For example:
# Display PIM routing table information on Switch A.
[SwitchA] display pim routing-table
VPN-Instance: public net
Total 0 (*, G) entry; 1 (S, G) entry
(10.110.5.100, 232.1.1.1)
Protocol: pim-ssm, Flag:
UpTime: 00:13:25
Upstream interface: Vlan-interface101
Upstream neighbor: 192.168.1.2
RPF prime neighbor: 192.168.1.2
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface100
Protocol: igmp, UpTime: 00:13:25, Expires: 00:03:25
# Display PIM routing table information on Switch D.
[SwitchD] display pim routing-table
VPN-Instance: public net
Total 0 (*, G) entry; 1 (S, G) entry
(10.110.5.100, 232.1.1.1)
Protocol: pim-ssm, Flag: LOC
UpTime: 00:12:05
Upstream interface: Vlan-interface300
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface105
Protocol: pim-ssm, UpTime: 00:12:05, Expires: 00:03:25
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