
7-1
Chapter 7
Configuring IP Multicasting
An IP environment can include both unicast and multicast routers.
•A unicast router forwards unicast datagrams — datagrams that bear a unicast
IP destination address. Each unicast datagram is delivered to a single
destination.
•A multicast router forwards unicast datagrams and can also forward IP
multicast datagrams — datagrams that bear a multicast IP address. Each
multicast datagram is delivered to a host group, a set of zero or more hosts
designated by the address.
This chapter contains the following sections describing Bay Networks support for
IP multicast routing:
• Host Groups - page 7-2
• Multicast Networks and Multicast Source Networks - page 7-2
• Internet Group Management Protocol - page 7-3
• Distance Vector Multicast Routing Protocol - page 7-4
• Types of Multicast Support - page 7-11
• Editing Multicasting Parameters - page 7-12
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