Configuring Ssm Mapping - Cisco 3845 - Security Bundle Router Software Manual

Chapter 33 Configuring IP Multicast Routing
To look up one or more source addresses for a group that includes G1, G2, G3, and G4, you must
configure these DNS records on the DNS server:
G4.G3.G2.G1 [multicast-domain] [timeout]IN A source-address-1
Refer to your DNS server documentation for more information about configuring DNS resource records,
and go to this URL for additional information on SSM mapping:
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtssmma.html

Configuring SSM Mapping

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Configuring Static SSM Mapping
Beginning in privileged EXEC mode, follow these steps to configure static SSM mapping:
Command
Step 1
configure terminal
Step 2
ip igmp ssm-map enable
Step 3
no ip igmp ssm-map query dns
Step 4
ip igmp ssm-map static access-list
source-address
Step 5
Repeat Step 4 to configure additional
static SSM mappings, if required.
Step 6 end
Step 7 show running-config
Step 8 copy running-config startup-config
OL-23400-01
IN A source-address-2
IN A source-address-n
Configuring Static SSM Mapping, page 33-19
Configuring DNS-Based SSM Mapping, page 33-20
Configuring Static Traffic Forwarding with SSM Mapping, page 33-21
(required)
Purpose
Enter global configuration mode.
Enable SSM mapping for groups in the configured SSM range.
By default, this command enables DNS-based SSM mapping.
Note
(Optional) Disable DNS-based SSM mapping.
Note Disable DNS-based SSM mapping if you only want to rely on
static SSM mapping. By default, the ip igmp ssm-map global
configuration command enables DNS-based SSM mapping.
Configure static SSM mapping.
The ACL supplied for access-list defines the groups to be mapped to the
source IP address entered for the source-address.
Note 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.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Cisco ME 3800X and 3600X Switch Software Configuration Guide
Configuring IP Multicast Routing
(required)
(optional)
33-19