Cisco Catalyst 3650 User Manual

Configuring DNS-Based SSM Mapping (CLI)
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.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
ip igmp ssm-map enable
4.
ip igmp ssm-map query dns
5.
ip domain multicast domain-prefix
6.
ip name-server server-address1 [server-address2... server-address6]
7.
Repeat Step 5 to configure additional DNS servers for redundancy, if required.
8.
end
9.
show running-config
10.
copy running-config startup-config
DETAILED STEPS
PurposeCommand or Action
Enables privileged EXEC mode.enable
Step 1
Example:
Device> enable
•
Enter your password if prompted.
Enters the global configuration mode.configure terminal
Example:
Device# configure terminal
Step 2
Enables SSM mapping for groups in a configured SSM
range.
ip igmp ssm-map enable
Example:
Device(config)# ip igmp ssm-map
Step 3
enable
(Optional) Enables DNS-based SSM mapping.ip igmp ssm-map query dns
Step 4
Example:
Device(config)# ip igmp ssm-map
By default, the ip igmp ssm-map command enables
DNS-based SSM mapping. Only the no form of this
command is saved to the running configuration.
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
242 OL-29890-01
Configuring SSM
Configuring Source Specific Multicast Mapping

Cisco Catalyst 3650 Specifications

General

Brand	Cisco
Model	Catalyst 3650
Category	Switch
Language	English