25-21
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 25 Configuring IPv4 Multicast VPN Support
Configuring MVPN
When configuring PIM on an interface, note the following information:
• You can use one of these interface types:
–
A physical interface on a provider edge (PE) router that is connected to the backbone.
–
A loopback interface that is used for BGP peering.
–
A loopback interface that is used as the source for the sparse PIM network rendezvous point
(RP) address.
• These are the PIM modes:
–
dense-mode—Enables dense mode of operation.
–
sparse-mode—Enables sparse mode of operation.
–
sparse-dense-mode—Enables sparse mode if the multicast group has an RP router defined, or
enables dense mode if an RP router is not defined.
• Use sparse-mode for the physical interfaces of all PE routers that are connected to the backbone,
and on all loopback interfaces that are used for BGP peering or as the source for RP addressing.
This example shows how to configure PIM sparse mode on a physical interface:
Router# configure terminal
interface gigabitethernet 10/1
Router(config-if)# ip pim sparse-mode
This example shows how to configure PIM sparse mode on a loopback interface:
Router# configure terminal
Router(config)# interface loopback 2
Router(config-if)# ip pim sparse-mode
Configuring an Interface for IPv4 VRF Forwarding
To configure an interface for IPv4 VRF forwarding, perform this task:
This example shows how to configure the interface for VRF blue forwarding:
Router(config-if)# ip vrf forwarding blue
Step 3
Router(config-if)# ip pim {dense-mode |
sparse-mode | sparse-dense-mode}
Enables PIM on the interface.
Router(config)# no ip pim [dense-mode |
sparse-mode | sparse-dense-mode]
Disables PIM.
Command or Action Purpose
Command or Action Purpose
Router(config-if)# ip vrf forwarding
vrf_name
(Optional) Associates the specified VRF routing and
forwarding tables with the interface. If this is not specified,
the interface defaults to using the global routing table.
Note Entering this command on an interface removes the IP
address, so reconfigure the IP address.
Router(config-if)# no ip vrf forwarding [
vrf_name
]
Disables IPv4 VRF forwarding.
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