Source Specific Multicast With Igmpv3, Igmp V3Lite, And Urd; Enabling Ip Multicast Routing Globally; Enabling Ip Pim On Layer 3 Interfaces - Cisco 6500 Series Software Configuration Manual

Configuring IP 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/univercd/cc/td/doc/product/software/ios121/121newft/121t/121t5/dtssm5t.htm

Enabling IP 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 IP 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)#
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
18-10
Cisco IOS IP and IP Routing Configuration Guide, Release 12.1, at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/ip_c/index.htm
Cisco IOS IP and IP Routing Command Reference, Release 12.1, at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/ip_r/index.htm
Chapter 18
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.
Configuring IP Multicast Layer 3 Switching
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