3Com S7906E - Switch, Configuration Manual

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# View the PIM neighboring relationships on Switch D.
[SwitchD] display pim neighbor
Total Number of Neighbors = 3
Neighbor Interface Uptime Expires Dr-Priority
192.168.1.1 Vlan103 00:02:22 00:01:27 1
192.168.2.1 Vlan101 00:00:22 00:01:29 3
192.168.3.1 Vlan102 00:00:23 00:01:31 5
Assume that Host A needs to receive the information addressed to multicast group G (225.1.1.1). After
multicast source S (10.110.5.100/24) sends multicast packets to the multicast group G, an SPT is
established through traffic flooding. Switches on the SPT path (Switch A and Switch D) have their (S, G)
entries. Host A sends an IGMP report to Switch A to join the multicast group G, and a (*, G) entry is
generated on Switch A. You can use the display pim routing-table command to view the PIM routing
table information on each switch. For example:
# View the PIM routing table information on Switch A.
[SwitchA] display pim routing-table
Total 1 (*, G) entry; 1 (S, G) entry
(*, 225.1.1.1)
Protocol: pim-dm, Flag: WC
UpTime: 00:04:25
Upstream interface: NULL
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface100
Protocol: igmp, UpTime: 00:04:25, Expires: never
(10.110.5.100, 225.1.1.1)
Protocol: pim-dm, Flag: ACT
UpTime: 00:06:14
Upstream interface: Vlan-interface103
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: pim-dm, UpTime: 00:04:25, Expires: never
The information on Switch B and Switch C is similar to that on Switch A.
# View the PIM routing table information on Switch D.
[SwitchD] display pim routing-table
Total 0 (*, G) entry; 1 (S, G) entry
(10.110.5.100, 225.1.1.1)
Protocol: pim-dm, Flag: LOC ACT