Cisco Catalyst 2960-XR - Configuring DNS-Based SSM Mapping

PurposeCommand or Action
You can configure additional static SSM mappings. If
additional SSM mappings are configured and the router
receives an IGMPv1 or IGMPv2 membership report for a
group in the SSM range, the switch determines the source
addresses associated with the group by using each
configured ip igmp ssm-map static command. The switch
associates up to 20 sources per group.
Note
11 172.16.8.11
—
Repeat Step 4 to configure additional static SSM
mappings, if required.
Step 5
Returns to privileged EXEC mode.end
Example:
Switch(config)# end
Step 6
Verifies your entries.show running-config
Example:
Switch# show running-config
Step 7
(Optional) Saves your entries in the configuration file.copy running-config startup-config
Example:
Switch# copy running-config
Step 8
startup-config
Related Topics
Static SSM Mapping, on page 81
Configuring DNS-Based SSM Mapping
To configure DNS-based SSM mapping, you need to create a DNS server zone or add records to an existing
zone. If the routers that are using DNS-based SSM mapping are also using DNS for other purposes, you should
use a normally configured DNS server. If DNS-based SSM mapping is the only DNS implementation being
used on the router, you can configure a false DNS setup with an empty root zone or a root zone that points
back to itself.
Catalyst 2960-XR Switch IP Multicast Routing Configuration Guide, Cisco IOS Release 15.0(2)EX1
OL-29426-01 85
Configuring SSM
Configuring Source Specific Multicast Mapping