1-18
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.
<SwitchA> display igmp-snooping group vlan100
Total 1 IP Group(s).
Total 1 MAC Group(s).
Vlan(id):100.
Total 1 IP Group(s).
Total 1 MAC Group(s).
Static Router port(s):
Dynamic Router port(s):
Ethernet1/0/1
IP group(s):the following ip group(s) match to one mac group.
IP group address: 224.1.1.1
Static host port(s):
Dynamic host port(s):
Ethernet1/0/3 Ethernet1/0/4
MAC group(s):
MAC group address: 0100-5e01-0101
Host port(s): Ethernet1/0/3 Ethernet1/0/4
As shown above, the multicast group 224.1.1.1 has been registered on Switch A, with the dynamic
router port Ethernet 1/0/1 and dynamic member ports Ethernet 1/0/3 and Ethernet 1/0/4. This means
that Host A and Host B have joined the multicast group 224.1.1.1.
Configuring Multicast VLAN
Network requirements
As shown in Figure 3-4, Workstation is a multicast source. Switch A forwards multicast data from the
multicast source. A Layer 2 switch, Switch B forwards the multicast data to the end users Host A and
Host B.
Table 3-2 describes the network devices involved in this example and the configurations you should
make on them.
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