19 display igmp-snooping group vlan100Total 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):Ethernet1/0/1IP group(s):the following ip group(s) match to one mac group.IP group address: 224.1.1.1Static host port(s):Dynamic host port(s):Ethernet1/0/3 Ethernet1/0/4MAC group(s):MAC group address: 0100-5e01-0101Host port(s): Ethernet1/0/3 Ethernet1/0/4As shown above, the multicast group 224.1.1.1 has been registered on Switch A, with the dynamicrouter port Ethernet 1/0/1 and dynamic member ports Ethernet 1/0/3 and Ethernet 1/0/4. This meansthat Host A and Host B have joined the multicast group 224.1.1.1.Configuring Multicast VLANNetwork requirementsAs shown in Figure 6-4, Workstation is a multicast source. Switch A forwards multicast data from themulticast source. A Layer 2 switch, Switch B forwards the multicast data to the end users Host A andHost B.Table 6-2 describes the network devices involved in this example and the configurations you shouldmake on them.Table 6-2 Network devices and their configurationsDevice Device description Networking descriptionSwitch A Layer 3 switchThe interface IP address of VLAN 20 is 168.10.1.1. Ethernet1/0/1 is connected to the workstation and belongs to VLAN20.The interface IP address of VLAN 10 is 168.10.2.1. Ethernet1/0/10 belongs to VLAN 10. Ethernet 1/0/10 is connected toSwitch B.Switch B Layer 2 switchz VLAN 2 contains Ethernet 1/0/1 and VLAN 3 containsEthernet 1/0/2.z The default VLANs of Ethernet 1/0/1 and Ethernet 1/0/2are VLAN 2 and VLAN 3 respectively.z VLAN 10 contains Ethernet 1/0/10, Ethernet 1/0/1, andEthernet 1/0/2. Ethernet 1/0/10 is connected to Switch A.z VLAN 10 is a multicast VLAN.z Ethernet 1/0/1 sends untagged packets for VLAN 2 andVLAN 10.z Ethernet 1/0/2 sends untagged packets for VLAN 3 andVLAN 10.
