3Com Switch 4800G 24-Port Configuration Manual page 661

Vlan101 1
Vlan102 1
Carry out the display pim neighbor command to view the PIM neighboring
relationships among the switches. For example:
# View the PIM neighboring relationships on Switch D.
[SwitchD] display pim neighbor
Total Number of Neighbors = 3
Neighbor Interface
192.168.1.1 Vlan103
192.168.2.1 Vlan101
192.168.3.1 Vlan102
Assume that Host A needs to receive the information addressed to a multicast
group G (225.1.1.1/24). 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 registers with Switch A, 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
UpTime: 00:03:27
Upstream interface: Vlan-interface300
Upstream neighbor: NULL
RPF prime neighbor: NULL
PIM Configuration Examples
30 1 192.168.2.2
30 1 192.168.3.2
Uptime Expires
00:02:22 00:01:27
00:00:22 00:01:29
00:00:23 00:01:31
661
(local)
(local)
Dr-Priority
1
3
5