Source-Specific Multicast With Igmpv3, Igmp V3Lite, And Urd; Enabling Ipv4 Multicast Routing Globally; Enabling Ipv4 Pim On Layer 3 Interfaces - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Chapter 25 Configuring IPv4 Multicast Layer 3 Switching

Source-Specific Multicast with IGMPv3, IGMP v3lite, and URD

For complete information and procedures about source-specific multicast with IGMPv3, IGMP v3lite,
and URL Rendezvous Directory (URD), refer to this URL:
http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/1cfssm.html

Enabling IPv4 Multicast Routing Globally

You must enable IP multicast routing globally before you can enable IP multicast Layer 3 switching on
Layer 3 interfaces.
For complete information and procedures, refer to these publications:
•
•
To enable IP multicast routing globally, perform this task:
Command
Router(config)# ip multicast-routing
Router(config)# no ip multicast-routing
This example shows how to enable multicast routing globally:
Router(config)# ip multicast-routing
Router(config)#

Enabling IPv4 PIM on Layer 3 Interfaces

You must enable PIM on the Layer 3 interfaces before IP multicast Layer 3 switching functions on those
interfaces.
To enable IP PIM on a Layer 3 interface, perform this task:
Command
Step 1
Router(config)# interface {{vlan vlan_ID} |
1
{type slot/port}}
Step 2
Router(config-if)# ip pim {dense-mode |
sparse-mode | sparse-dense-mode}
Router(config-if)# no ip pim [dense-mode |
sparse-mode | sparse-dense-mode]
1. type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet
This example shows how to enable PIM on an interface using the default mode (sparse-dense-mode):
Router(config-if)# ip pim
Router(config-if)#
OL-11439-03
Cisco IOS IP and IP Routing Configuration Guide, Release 12.2, at this URL:
http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/fipr_c.html
Cisco IOS IP and IP Routing Command Reference, Release 12.1, at this URL:
http://www.cisco.com/en/US/docs/ios/12_2/ipaddr/command/reference/fipras_r.html
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
Configuring IPv4 Multicast Layer 3 Switching
Purpose
Enables IP multicast routing globally.
Disables IP multicast routing globally.
Purpose
Selects an interface to configure.
Enables IP PIM on a Layer 3 interface.
Disables IP PIM on a Layer 3 interface.
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