Which option is a valid Cisco IOS XR BGP Layer 3 IPv4 MPLS VPN configuration?
A.
router bgp 65001
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 1.2.3.4 remote-as 65001 neighbor 1.2.3.4 update-source Loopback0
address-family vpnv4
neighbor 1.2.3.4 activate
neighbor 1.2.3.4 send-community extended
exit-address-family
address-family ipv4 vrf VPN
redistribute ospf 100
B.
router bgp 65001
no bgp default ipv4-unicast
bgp log-neighbor-changes
neighbor 1.2.3.4 remote-as 65001
neighbor 1.2.3.4 update-source Loopback0
address-family vpnv4
neighbor 1.2.3.4 activate
exit-address-family
address-family ipv4 vrf VPN
redistribute ospf 100
C.
router bgp 100
address-family vpnv4 unicast
neighbor 2.2.2.2
remote-as 100
update-source Loopback0
address-family vpnv4 unicast
!
vrf VPN_A
rd 100:1
address-family ipv4 unicast
redistribute ospf 100
D.
router bgp 100
address-family vpnv4 unicast
neighbor 2.2.2.2
remote-as 100
update-source Loopback0
address-family ipv4 unicast
!
vrf VPN_A
rd 100:1
address-family ipv4 unicast
redistribute ospf 100