3Com S7906E Configuration Manual page 1078

<SwitchA> system-view
[SwitchA] multicast routing-enable
[SwitchA] interface vlan-interface 100
[SwitchA-Vlan-interface100] igmp enable
[SwitchA-Vlan-interface100] igmp version 3
[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
The configuration on Switch B and Switch C is similar to that on Switch A. The configuration on Switch D
and Switch E is also similar to that on Switch A except that it is not necessary to enable IGMP on the
corresponding interfaces on these two switches.
3) Configure the SSM group range
# Configure the SSM group range to be 232.1.1.0/24 one Switch A.
[SwitchA] acl number 2000
[SwitchA-acl-basic-2000] rule permit source 232.1.1.0 0.0.0.255
[SwitchA-acl-basic-2000] quit
[SwitchA] pim
[SwitchA-pim] ssm-policy 2000
[SwitchA-pim] quit
The configuration on Switch B, Switch C, Switch D and Switch E is similar to that on Switch A.
4) Verify the configuration
Carry out 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 A.
[SwitchA] display pim interface
Interface
Vlan100
Vlan101
Vlan102
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, while 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:
# View the PIM routing table information on Switch A.
[SwitchA] display pim routing-table
Total 0 (*, G) entry; 1 (S, G) entry
(10.110.5.100, 232.1.1.1)
NbrCnt HelloInt DR-Pri
0 30 1
1 30 1
1 30 1
1-56
DR-Address
10.110.1.1 (local)
192.168.1.2
192.168.9.2