Cisco Catalyst 3750-X User Manual

CHAPTER
48-1
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
48
Configuring IP Multicast Routing
This chapter describes how to configure IP multicast routing on the Catalyst 3750-X or 3560-X 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.
To use this feature, the switch or stack master must b
e running the IP services feature set. To use the PIM
stub routing feature, the switch or stack master can be running the IP base image.
Note Multicast routing is not supported on switches running the LAN base feature set.
Unless otherwise noted, the term switc
h refers to a Catalyst 3750-X or 3560-X standalone switch and to
a Catalyst 3750-X switch stack.
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.
• Understanding Cisco’s Implementation of IP Multicast Routing, page 48-2
• Multicast Routing and Switch Stacks, page 48-10
• Configuring IP Multicast Routing, page 48-10
• Configuring Advanced PIM Features, page 48-35
• Configuring Optional IGMP Features, page 48-38
• Configuring Optional Multicast Routing Features, page 48-44
• Configuring Basic DVMRP Interoperability Features, page 48-49
• Configuring Advanced DVMRP Interoperability Features, page 48-54
• Monitoring and Maintaining IP Multicast Routing, page 48-62
For information on configuring the Multicast Source Discovery Protocol (MSDP), see Ch
apter 49,
“Configuring MSDP.”

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing