VPN support for IPv4 and IPv6 address families.
Which command enables a VRF that supports these requirements?
A. Router(config-vrf)#route-target 004:006
B. Router(config)#ip vrf CUSTOMER
C. Router(config)#vrf definition CUSTOMER
D. Router(config-vrf)#rd 004:006
Came back to post why the answer is D
Question wants a VRF that works for IPv4 and IPv6. Obviously the route-target and RD commands are there in both instances. these instances are how you initially setup your VRF. The old way was to use from global config mode “ip vrf ” but using this configures a IPv4 ONLY VRF instance, we need IPv6 as well. the route-target and RD commands are useless for determining if this is an IPv6 compatible VRF
“vrf definition creates an IPv4 and IPv6 compatible VRF
https://community.cisco.com/t5/switching/what-s-the-difference-between-vrf-definition-and-ip-vrf/td-p/3393534
C
C
http://rizzitech.blogspot.com/2010/11/vrf-definition-command-how-to-survive.html
Which requirements?
D
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/15-02SG/configuration/guide/config/vrf.html
Configuring VRFs
To configure one or more VRFs, perform this task:
This link is for a 4500 switch config, those are chassis based much like the 6500 and likely outside of the scope of CCNP, especially since this is a Route test, not the switch. Route-target and RD are also both 8byte values, cisco states its either to AS followed by random integer (xxx:y) or an IP address followed by random integer a.b.c.d:y
VRF definition CUSTOMER command creates a new VRF (or enables, starts) that VRF in router