Cisco Systems 78-11741-02 manual SSM Configuration Examples, SSM with IGMPv3 Example, IPC-468

Configuring Source Specific Multicast

SSM Configuration Examples

SSM Configuration Examples

This section provides the following SSM configuration examples:

•SSM with IGMPv3 Example

•SSM with IGMP v3lite and URD Example

•SSM Filtering Example

SSM with IGMPv3 Example

The following example shows how to configure a router (running IGMPv3) for SSM:

ip multicast-routing

!

interface Ethernet3/1

ip address 172.21.200.203 255.255.255.0 description backbone interface

ip pim sparse-dense-mode

!

interface Ethernet3/2

ip address 131.108.1.2 255.255.255.0 ip pim sparse-dense-mode

description ethernet connected to hosts ip igmp version 3

!

ip pim ssm default

SSM with IGMP v3lite and URD Example

The following example shows how to configure IGMP v3lite and URD on interfaces connected to hosts for SSM. Configuring IGMP v3lite and URD is not required or recommended on backbone interfaces.

interface ethernet 3/1

ip address 172.21.200.203 255.255.255.0 ip pim sparse-dense-mode

description ethernet connected to hosts

!

interface ethernet 1

description ethernet connected to hosts ip address 131.108.1.2 255.255.255.0 ip pim sparse-dense-mode

ip urd

ip igmp v3lite

SSM Filtering Example

The following example shows how to configure filtering on a legacy RP router running Cisco IOS releases earlier than Release 12.1(3)T for SSM routing. This filtering will suppress all unwanted PIM-SM and MSDP traffic in the SSM range. Without this filtering, SSM will still operate, but there may be additional RPT traffic if legacy first hop and last hop routers exist in the network.

ip access-list extended				no-ssm-range
deny	ip	any	232.0.0.0	0.255.255.255 ! SSM range
permit ip		any	any
! Deny	registering in SSM			range

Cisco IOS IP Configuration Guide

IPC-468