Chapter 3 Featured Functions
host to multiple hosts. Only those hosts that belong to a specific multicast group will receive the
multicast. The Internet Group Management Protocol (IGMP) snooping enables the switch to forward
multicast traffic intelligently to only the interface that request the multicast traffic. So the network
resource is not wasted too much.
If there is a network without the multicast filtering, and a host needs to send data to many hosts,
then it needs to produce several copies in the network. It wastes too much network bandwidth. If
there is a network with the multicast filtering, then it reduces the load of resources (ex. a server) and
makes the network bandwidth efficient.
Network without Multicast Filtering:
(All hosts receive the multicast traffic.)
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