Cisco Catalyst 3750-X User Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 48 Configuring IP Multicast Routing
Configuring IP Multicast Routing
Configuring SSM
Beginning in privileged EXEC mode, follow these steps to configure SSM. This procedure is optional.
Monitoring SSM
Beginning in privileged EXEC mode, use these commands to monitor SSM.
Configuring Source Specific Multicast Mapping
The Source Specific Multicast (SSM) mapping feature supports SSM transition when supporting SSM
on the end system is impossible or unwanted due to administrative or technical reasons. You can use
SSM mapping to leverage SSM for video delivery to legacy STBs that do not support IGMPv3 or for
applications that do not use the IGMPv3 host stack.
• SSM Mapping Configuration Guidelines and Restrictions, page 48-17
• SSM Mapping Overview, page 48-18
• Configuring SSM Mapping, page 48-20
• Monitoring SSM Mapping, page 48-22
SSM Mapping Configuration Guidelines and Restrictions
These are the SSM mapping configuration guidelines:
• Before you configure SSM mapping, enable IP multicast routing, enable PIM sparse mode, and
configure SSM. For information on enabling IP multicast routing and PIM sparse mode, see the
“Default Multicast Routing Configuration” section on page 48-11.
• Before you configure static SSM mapping, you must configure access control lists (ACLs) that
define the group ranges to be mapped to source addresses. For information on configuring an ACL,
see Chapter 37, “Configuring Network Security with ACLs.”
Command Purpose
Step 1
ip pim ssm [default | range access-list] Define the SSM range of IP multicast addresses.
Step 2
interface type number Select an interface that is connected to hosts on which
IGMPv3 can be enabled, and enter the interface configuration
mode.
Step 3
ip pim {sparse-mode | sparse-dense-mode} Enable PIM on an interface. You must use either sparse mode
or sparse-dense mode.
Step 4
ip igmp version 3 Enable IGMPv3 on this interface. The default version of
IGMP is set to Version 2.
Command Purpose
show ip igmp groups detail Display the (S, G) channel subscription through IGMPv3.
show ip mroute Display whether a multicast group supports SSM service or
w
hether a source-specific host report was received.

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