Chapter 18. IGMP
This chapter covers the following topics:
Data Link Layer Support for Multicast—Describes three methods to send multicasts to ports where the traffic is wanted and to hide multicasts from other hosts.
Understanding IGMP—Describes the features of IGMPv1, IGMPv2, and IGMPv3 and how to determine which IGMP version is running on a router.
Configuring IGMP—Describes enabling IGMP groups and configuring IGMP snooping.
Because not everyone on a network wants to receive the traffic from a multicast source, routers must have some means of forwarding traffic to only the destinations that want to receive it. This chapter covers IP multicast and some of the protocols used to forward multicast packets. You will learn the basic features and operation ...
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