3Com 4200G 24-Port - Configuring Multicast VLAN

2-17
# 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):
GigabitEthernet1/0/1
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):
GigabitEthernet1/0/3 GigabitEthernet1/0/4
MAC group(s):
MAC group address: 0100-5e01-0101
Host port(s):GigabitEthernet1/0/3 GigabitEthernet1/0/4
As shown above, the multicast group 224.1.1.1 is established on Switch A, with the dynamic router port
GigabitEthernet1/0/1 and dynamic member ports GigabitEthernet1/0/3 and GigabitEthernet1/0/4. 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 2-4, 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 2-22 describes the network devices involved in this example and the configurations you should
make on them.
Table 2-22 Network devices and their configurations
Device Device description Networking description
Switch A Layer 3 switch
The interface IP address of VLAN 20 is 168.10.1.1.
GigabitEthernet 1/0/1 is connected to the
workstation and belongs to VLAN 20.
The interface IP address of VLAN 10 is 168.10.2.1.
GigabitEthernet 1/0/10 belongs to VLAN 10.
GigabitEthernet 1/0/10 is connected to Switch B.