Configuring The Mdt Source Per Vrf - Cisco XR12000 Series Configuration Manual

Implementing Multicast Routing on Cisco IOS XR Software
DETAILED STEPS
Command or Action
Step 1
configure
Example:
RP/0/0/CPU0:router# configure
Step 2 router igmp
Example:
RP/0/0/CPU0:router(config)# router igmp
Step 3 vrf vrf-name
Example:
RP/0/0/CPU0:router(config-igmp)# vrf
vrf_B
Step 4 Use the commit or end command.

Configuring the MDT Source per VRF

This optional feature lets you change the default routing mechanism in a multicast VPN network topology,
which routes all unicast traffic through a BGP peering loopback configured on a default VRF. Instead, you
may configure a loopback that allows you to specify the MDT source using a specific VRF, as opposed to the
default VRF. This overrides the current behavior and updates BGP as part of a MDT group. BGP then modifies
the source and connector attributes in the MDT SAFI and VPN IPv4 updates.
For VRFs on which the MDT source is not configured, the MDT source for the default VRF is applied. Also,
when the MDT source on a VRF is unconfigured, the configuration of the MDT source default VRF takes
effect.
OL-30405-02
Purpose
Enters global configuration mode.
Enters IGMP configuration mode.
Configures a VRF instance.
commit—Saves the configuration changes, and remains within the
configuration session.
end—Prompts user to take one of these actions:
• Yes— Saves configuration changes and exits the configuration
session.
• No—Exits the configuration session without committing the
configuration changes.
• Cancel—Remains in the configuration mode, without committing
the configuration changes.
Cisco IOS XR Multicast Configuration Guide for the Cisco XR12000 Series Router, Release 5.1.x
Configuring Multicast VPN
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