Cisco Systems ME 3400 Configuring Static Traffic Forwarding with SSM Mapping

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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide

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Chapter 40 Configuring IP Multicast Routing Configuring IP Multicast Routing

Configuring Static Traffic Forwarding with SSM Mapping

Use static traffic forwarding with SSM mapping to statically forward SSM traffic for certain groups.

Beginning in privileged EXEC mode, follow these steps to configure static traffic forwarding with SSM

mapping:

Step 3 ip igmp ssm-map query dns (Optional) Enable DNS-based SSM mapping.

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.

Note Use this command to re-enable DNS-based SSM mapping if

DNS-based SSM mapping is disabled.

Step 4 ip domain multicast domain-prefix (Optional) Change the domain prefix used by the switch for DNS-based

SSM mapping.

By default, the switch uses the ip-addr.arpa domain prefix.

Step 5 ip name-server server-address1

[server-address2... server-address6]Specify the address of one or more name servers to use for name and

address resolution.

Step 6 Repeat Step 5 to configure additional

DNS servers for redundancy, if required. —

Step 7 end Return to privileged EXEC mode.

Step 8 show running-config Verify your entries.

Step 9 copy running-config startup-config (Optional) Save your entries in the configuration file.

Command Purpose

Step 1 configure terminal Enter global configuration mode.

Step 2 interface type number Select an interface on which to statically forward traffic for a multicast

group using SSM mapping, and enter interface configuration mode.

Note Static forwarding of traffic with SSM mapping works with either

DNS-based SSM mapping or statically configured SSM

mapping.

Step 3 ip igmp static-group group-address

source ssm-map Configure SSM mapping to statically forward a (S, G) channel from the

interface.

Use this command if you want to statically forward SSM traffic for

certain groups. Use DNS-based SSM mapping to determine the source

addresses of the channels.

Step 4 show running-config Verify your entries.

Step 5 copy running-config startup-config (Optional) Save your entries in the configuration file.