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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. When static traffic

forwarding with SSM mapping is configured, the last hop router uses Domain Name System (DNS)-based SSM mapping

to determine the sources associated with a group. The resulting (S, G) channels are then statically forwarded.

BEFORE YOU BEGIN

Configure DNS-based SSM mapping as described in the Configuring DNS-Based SSM Mapping, page 694.

DETAILED STEPS

EXAMPLE

The following example shows how to configure group address 239.1.2.1 to use SSM mapping for statically forwarded

groups on Ethernet interface 0:

interface ethernet 0

ip igmp static-group 239.1.2.1 source ssm-map

Command Purpose

1. configure terminal Enter global configuration mode.

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.

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.

4. show running-config Verify your entries.

5. copy running-config

startup-config

(Optional) Save your entries in the configuration file.

Cisco IE-5000 User Manual

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