3Com S7906E Configuration Manual page 1213

3) Configure Switch A
# Enable IGMP snooping globally.
<SwitchA> system-view
[SwitchA] igmp-snooping
[SwitchA-igmp-snooping] quit
# Create VLAN 100, assign GigabitEthernet 2/0/1 through GigabitEthernet 2/0/4 to this VLAN, and
enable IGMP snooping and the function of dropping unknown multicast traffic in the VLAN.
[SwitchA] vlan 100
[SwitchA-vlan100] port gigabitethernet 2/0/1 to gigabitethernet 2/0/4
[SwitchA-vlan100] igmp-snooping enable
[SwitchA-vlan100] igmp-snooping drop-unknown
[SwitchA-vlan100] quit
# Configure a multicast group filter so that the hosts in VLAN 100 can join only the multicast group
224.1.1.1.
[SwitchA] acl number 2001
[SwitchA-acl-basic-2001] rule permit source 224.1.1.1 0
[SwitchA-acl-basic-2001] quit
[SwitchA] igmp-snooping
[SwitchA-igmp-snooping] group-policy 2001 vlan 100
[SwitchA-igmp-snooping] quit
# Configure GigabitEthernet 2/0/3 and GigabitEthernet 2/0/4 as simulated hosts for multicast group
224.1.1.1.
[SwitchA] interface gigabitethernet 2/0/3
[SwitchA-Gigabitethernet2/0/3] igmp-snooping host-join 224.1.1.1 vlan 100
[SwitchA-Gigabitethernet2/0/3] quit
[SwitchA] interface gigabitethernet 2/0/4
[SwitchA-Gigabitethernet2/0/4] igmp-snooping host-join 224.1.1.1 vlan 100
[SwitchA-Gigabitethernet2/0/4] quit
4) Verify the configuration
# Display the detailed IGMP snooping multicast groups information in VLAN 100 on Switch A.
[SwitchA] display igmp-snooping group vlan 100 verbose
Total 1 IP Group(s).
Total 1 IP Source(s).
Total 1 MAC Group(s).
Port flags: D-Dynamic port, S-Static port, C-Copy port
Subvlan flags: R-Real VLAN, C-Copy VLAN
Vlan(id):100.
Total 1 IP Group(s).
Total 1 IP Source(s).
Total 1 MAC Group(s).
Router port unit board: Mask(0x04)
Router port(s):total 1 port.
GE2/0/1
IP group(s):the following ip group(s) match to one mac group.
(D)
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