Cisco Systems 3560X Manual De Usuario
48-17
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.
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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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
configure SSM. For information on enabling IP multicast routing and PIM sparse mode, see the
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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
define the group ranges to be mapped to source addresses. For information on configuring an ACL,
see
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.
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.
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.
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
whether a source-specific host report was received.
whether a source-specific host report was received.