Cisco CRS Configuration Manual page 254

Configuring Carrier Supporting Carrier
Step 4
neighbor A.B.C.D
Example:
RP/0/RP0/CPU0:router(config-bgp-af)#neighbor 10.10.10.0
RP/0/RP0/CPU0:router(config-bgp-nbr)#
Configures the IP address for the BGP neighbor.
Step 5 remote-as as-number
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr)# remote-as 888
Configures the AS number for the BGP neighbor.
Step 6 update-source type interface-path-id
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr)# update-source loopback0
Allows BGP sessions to use the primary IP address from a particular interface as the local address.
Step 7
address-family vpnv4 unicast
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr)# address-family vpnv4 unicast
RP/0/RP0/CPU0:router(config-bgp-nbr-af)#
Configures VPNv4 unicast address family.
Step 8 vrf vrf-name
Example:
RP/0/RP0/CPU0:router(config-bgp-nbr-af)# vrf 9999
RP/0/RP0/CPU0:router(config-bgp-vrf)#
Configures a VRF instance.
Step 9
rd {as-number:nn | ip-address:nn | auto}
Example:
RP/0/RP0/CPU0:router(onfig-bgp-vrf)# rd auto
RP/0/RP0/CPU0:router(config-bgp-vrf)# address-family ipv4 unicast
Configures a route distinguisher.
Use the auto keyword to automatically assign a unique route distinguisher.
Note
Step 10
address-family ipv4 unicast
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
240
Implementing MPLS Layer 3 VPNs