Manual

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through downstream ports.
Example2: IGMP Proxy for multicast sources from downstream ports.
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
Multicast
Server
Multicast
Router
IGMP
PROXY
Switch 2
IGMP
PROXY
Switch 1
IGMP
PROXY
Switch 3
Multicast
Router