
Configuring IP Multicasting and Multimedia Services
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Starting IGMP
IGMP is required for all types of multicasting. If you want the router to receive
and forward multicast packets (that is, packets with destination addresses from
224.0.0.255 to 239.255.255.255), IGMP must be running on the slot and circuit --
even if the circuit is a point-to-point circuit that will not be involved in IGMP
group queries and join messages.
When you configure any multicasting protocol described in this guide, Site
Manager automatically configures IGMP on the slot and circuit.
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