HP 4800G Series Configuration Manual page 854

The configuration on Switch B and Switch C is similar to that on Switch A.
# Enable IP multicast routing on Switch D, and enable PIM-DM on each interface.
<SwitchD> system-view
[SwitchD] multicast routing-enable
[SwitchD] interface vlan-interface 300
[SwitchD-Vlan-interface300] pim dm
[SwitchD-Vlan-interface300] quit
[SwitchD] interface vlan-interface 103
[SwitchD-Vlan-interface103] pim dm
[SwitchD-Vlan-interface103] quit
[SwitchD] interface vlan-interface 101
[SwitchD-Vlan-interface101] pim dm
[SwitchD-Vlan-interface101] quit
[SwitchD] interface vlan-interface 102
[SwitchD-Vlan-interface102] pim dm
[SwitchD-Vlan-interface102] quit
3) Verify the configuration
Use the display pim interface command to view the PIM configuration and running status on each
interface. For example:
# View the PIM configuration information on Switch D.
[SwitchD] display pim interface
Interface
Vlan300
Vlan103
Vlan101
Vlan102
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 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
NbrCnt HelloInt DR-Pri
0 30 1
1 30 1
1 30 1
1 30 1
Uptime
00:02:22 00:01:27 1
00:00:22 00:01:29 3
00:00:23 00:01:31 5
1-38
DR-Address
10.110.5.1 (local)
192.168.1.2 (local)
192.168.2.2 (local)
192.168.3.2 (local)
Expires Dr-Priority