Monitoring Ssm; Configuring Source Specific Multicast Mapping - Cisco Catalyst 3560-X Software Configuration Manual

Chapter 1 Configuring IP Multicast Routing
Configuring SSM
Beginning in privileged EXEC mode, follow these steps to configure SSM. This procedure is optional.
Command
Step 1 ip pim ssm [default | range access-list]
Step 2 interface type number
Step 3 ip pim {sparse-mode | sparse-dense-mode}
Step 4 ip igmp version 3

Monitoring SSM

Beginning in privileged EXEC mode, use these commands to monitor SSM.
Command
show ip igmp groups detail
show ip mroute

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.
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SSM Mapping Configuration Guidelines and Restrictions
These are the SSM mapping configuration guidelines:
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OL-25303-03
SSM Mapping Configuration Guidelines and Restrictions, page 1-17
SSM Mapping Overview, page 1-18
Configuring SSM Mapping, page 1-19
Monitoring SSM Mapping, page 1-22
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
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 1, "Configuring Network Security with ACLs."
Purpose
Define the SSM range of IP multicast addresses.
Select an interface that is connected to hosts on which
IGMPv3 can be enabled, and enter the interface configuration
mode.
Enable PIM on an interface. You must use either sparse mode
or sparse-dense mode.
Enable IGMPv3 on this interface. The default version of
IGMP is set to Version 2.
Purpose
Display the (S, G) channel subscription through IGMPv3.
Display whether a multicast group supports SSM service or
whether a source-specific host report was received.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
Configuring IP Multicast Routing
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