Configuring Ip Multicast Routing - Cisco WS-C3750-48PS-S Software Configuration Manual

Configuring IP Multicast Routing

This chapter describes how to configure IP multicast routing on the Catalyst 3750 switch. IP multicasting
is a more efficient way to use network resources, especially for bandwidth-intensive services such as
audio and video. IP multicast routing enables a host (source) to send packets to a group of hosts
(receivers) anywhere within the IP network by using a special form of IP address called the IP multicast
group address. The sending host inserts the multicast group address into the IP destination address field
of the packet, and IP multicast routers and multilayer switches forward incoming IP multicast packets
out all interfaces that lead to members of the multicast group. Any host, regardless of whether it is a
member of a group, can sent to a group. However, only the members of a group receive the message.
To use this feature, the stack master must be running the enhanced multilayer image (EMI). Unless
otherwise noted, the term switch refers to a standalone switch and to a switch stack.
For complete syntax and usage information for the commands used in this chapter, refer to the Cisco IOS
Note
IP Command Reference, Volume 3 of 3: Multicast, Release 12.2.
This chapter consists of these sections:
Understanding Cisco's Implementation of IP Multicast Routing, page 36-2
•
• Multicast Routing and Switch Stacks, page 36-8
Configuring IP Multicast Routing, page 36-8
•
Configuring Advanced PIM Features, page 36-23
•
Configuring Optional IGMP Features, page 36-27
•
Configuring Optional Multicast Routing Features, page 36-32
•
Configuring Basic DVMRP Interoperability Features, page 36-37
•
Configuring Advanced DVMRP Interoperability Features, page 36-42
•
Monitoring and Maintaining IP Multicast Routing, page 36-50
•
For information on configuring the Multicast Source Discovery Protocol (MSDP), see
"Configuring MSDP."
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Catalyst 3750 Switch Software Configuration Guide
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Chapter 37,
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