Cisco Systems EA6500 Manual De Usuario

For complete information and procedures about source specific multicast with IGMPv3, IGMP v3lite, 
and URL Rendezvous Directory (URD), refer to this URL:

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:

Cisco IOS IP and IP Routing Configuration Guide, Release 12.1, at this URL:

Cisco IOS IP and IP Routing Command Reference, Release 12.1, at this URL:

To enable IP multicast routing globally, perform this task:

This example shows how to enable multicast routing globally:

Router(config)# ip multicast-routing

Router(config)# 

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:

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)# 

Router(config)# ip multicast-routing 

Enables IP multicast routing globally.

Router(config)# no ip multicast-routing 

Disables IP multicast routing globally.

Router(config)# interface {{vlan vlan_ID} | 

{type

1

 slot/port}} 

1.

type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet 

Selects an interface to configure.

Router(config-if)# ip pim {dense-mode | 

 | sparse-dense-mode}

Enables IP PIM on a Layer 3 interface.

Router(config-if)# no ip pim [dense-mode | 

 | sparse-dense-mode]

Disables IP PIM on a Layer 3 interface.