PLANET XGS3-24040 - Manual (Page 401)

Chapter 43 Ipv4 Multicast Protocol
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Example2: IGMP Proxy for multicast sources from downstream ports.
Figure 1-13 IGMP Proxy for multicast sources from downstream ports
As it is show in the figure above, IGMP Proxy enabled switches connected to the network in tree topology. The
multicast source server connects to the downstream port of Switch1, the multicast dataflow is distributed
through the upstream port and other downstream ports. Three IGMP Proxy enabled switches which are
connected in tree topology, respectively have one port connected to multicast routers, and no less than one
ports connected to hosts or upstream ports from other IGMP proxy enabled switches.
The configuration steps are listed below:
IGMP PROXY Switch1 configuration：
Switch#config
Switch(config)#ip igmp proxy
Switch(Config)#interface vlan 1
Switch(Config-if-Vlan1)#ip igmp proxy upstream
Switch(Config)#interface vlan 2
Switch(Config-if-Vlan2)#ip igmp proxy downstream
Switch(Config-if-Vlan2)#ip igmp proxy multicast-source
Route1 configuration:
Switch#config
Switch(config)#ip pim multicast
Switch(Config)#interface vlan 1
Switch(Config-if-Vlan1)#ip pim sparse-mode
Switch(Config-if-Vlan1)#ip pim bsr-border
Multicast
Server
Multicast
Router
IGMP PROXY
Switch 2
IGMP PROXY
Switch 1
IGMP PROXY
Switch 3
Multicast
Router