3Com 4500 PWR 26-Port Configuration Manual page 340

Network diagram
Figure 27-3 Network diagram for IGMP Snooping configuratio
Configuration procedure
1) Configure the IP address of each interface
Configure an IP address and subnet mask for each interface as per
configuration steps are omitted.
2) Configure Router A
# Enable IP multicast routing, enable PIM-DM on each interface, and enable IGMP on Ethernet 1/0/1.
<RouterA> system-view
[RouterA] multicast routing-enable
[RouterA] interface Ethernet 1/0/1
[RouterA-Ethernet1/0/1] igmp enable
[RouterA-Ethernet1/0/1] pim dm
[RouterA-Ethernet1/0/1] quit
[RouterA] interface Ethernet 1/0/2
[RouterA-Ethernet1/0/2] pim dm
[RouterA-Ethernet1/0/2] quit
3) Configure Switch A
# Enable IGMP Snooping globally.
<SwitchA> system-view
[SwitchA] igmp-snooping enable
Enable IGMP-Snooping ok.
# Create VLAN 100, assign Ethernet 1/0/1 through Ethernet 1/0/4 to this VLAN, and enable IGMP
Snooping in the VLAN.
[SwitchA] vlan 100
[SwitchA-vlan100] port Ethernet 1/0/1 to Ethernet 1/0/4
[SwitchA-vlan100] igmp-snooping enable
[SwitchA-vlan100] quit
4) Verify the configuration
# View the detailed information of the multicast group in VLAN 100 on Switch A.
n
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Figure 27-3. The detailed