Cisco Systems 3560 Manual De Usuario
C H A P T E R
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Catalyst 3560 Switch Software Configuration Guide
OL-8553-06
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Configuring IP Multicast Routing
This chapter describes how to configure IP multicast routing on the Catalyst 3560 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 send to a group. However, only the members of a group receive the message.
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 send to a group. However, only the members of a group receive the message.
To use the IP multicast routing features, the switch must be running the IP services image (formerly
known as the enhanced multilayer image [EMI]). To use the PIM stub routing feature, theswitch can be
running the IP base image.
known as the enhanced multilayer image [EMI]). To use the PIM stub routing feature, theswitch can be
running the IP base image.
Note
For complete syntax and usage information for the commands used in this chapter, see the Cisco IOS IP
Command Reference, Volume 3 of 3: Multicast, Release 12.2 from the Cisco.com page under
Documentation > Cisco IOS Software > 12.2 Mainline > Command References.
Command Reference, Volume 3 of 3: Multicast, Release 12.2 from the Cisco.com page under
Documentation > Cisco IOS Software > 12.2 Mainline > Command References.
This chapter consists of these sections:
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For information on configuring the Multicast Source Discovery Protocol (MSDP), see