Verilink Net Engine (3150-30626-001) Product Manual - Manual (Page 200)

NetEngine IAD User Guide
Multicast (point-to-multipoint) is a communication feature that allows a
source host to send a message to a group of destination hosts.
Multicasting reduces traffic on the local network by sending only one
(multicast) packet out to a higher-bandwidth relay point.
Multicasting differs from broadcasting in that a receiver must join a
multicast group in order to receive group messages. Each multicast group
has its own group address, which is a Class D IP address—224.0.0.0—
239.255.255.255.
This chapter contains the following topics:
u Enabling and Disabling Global IP Multicasting (page 182 )
u Configuring PIM—Dense Mode by Port (page 183 )
u Adding and Changing the Multicast Route Source (page 185 )
u Displaying IGMP Groups (page 186 )
u Displaying the IGMP Querier (page 186 )
u Displaying the Multicast Routing Table (page 186 )
u Displaying PIM Neighbor (page 187 )
10. Multicast
Configuration
NOTE When the IAD prompts you for input, the current value is
displayed in parentheses. To conveniently accept the current
value, just press Enter.