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Configuring IP Multicast Routing
Configuring IP Multicast Routing
interface GigabitEthernet3/1/0
ip address 172.21.200.203 255.255.255.0
description backbone interface
ip pim sparse-mode
!
interface GigabitEthernet3/2/0
ip address 131.108.1.2 255.255.255.0
ip pim sparse-mode
description ethernet connected to hosts
ip igmp version 3
!
Verifying SSM Configuration
Configuring SSM Mapping
This section includes the following topics:
Configuring Static SSM Mapping, page 693 (required)
Configuring DNS-Based SSM Mapping, page 694 (required)
Configuring Static Traffic Forwarding with SSM Mapping, page 696 (optional)
Configuring Static SSM Mapping
BEFORE YOU BEGIN
See Information About Source Specific Multicast Mapping, page 683 and SSM Mapping Configuration Guidelines,
page 688.
Before you configure SSM mapping, enable IP multicast routing, enable PIM sparse mode, and configure SSM. For
information on enabling IP multicast routing and PIM sparse mode, see Configuring Basic Multicast Routing,
page 689.
Before you configure static SSM mapping, you must configure access control lists (ACLs) that define the group
ranges to be mapped to source addresses.
Command Purpose
show ip igmp groups detail Display the (S, G) channel subscription through IGMPv3.
show ip mroute Display whether a multicast group supports SSM service or whether a
source-specific host report was received.
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