conf t
!
hostname R3
!
group CCIE-ISIS
 router isis '.*'
  is-type level-2-only
  add ipv4 uni
   metric-style wide
   mpls ldp auto-config
  !
  int 'Lo.*'
   add ipv4 uni
    passive
   !
  !
  int 'Gi.*'
   point-to-point
   add ipv4 uni
   !
  root
  !
 !
!
vrf CustA
 add ipv4 uni
  import route-target
   100:100
  !
  export route-target 
   100:100
  !
 !
!
vrf CustB
 add ipv4 uni
  import route-target 
   200:200
  !
  export route-target 
   200:200
  !
 !
!
int lo 0
 ipv4 add 3.3.3.3/32
!
int lo 10
 description /// Loopback at CustA ///
 vrf CustA
 ipv4 add 30.30.30.30/32
!
int lo 20
 description /// Loopback at CustB ///
 vrf CustB
 ipv4 add 33.33.33.33/32
!
int gi0/0/0/1
 ipv4 add 10.10.23.3/24
 no sh
!
int gi0/0/0/2
 description /// Inter-AS OptionA ///
 no sh
!
int gi0/0/0/2.100
 description /// CustA-1 ///
 vrf CustA
 encapsulation dot1q 100
 ipv4 add 10.10.134.3/24
 no sh
!
int gi0/0/0/2.200
 description /// CustB-1 ///
 vrf CustB
 encapsulation dot1q 200
 ipv4 add 10.10.234.3/24
 no sh
!
router isis 1
 apply-group CCIE-ISIS
 net 49.0000.3.3.3.3.00
 int lo 0
 !
 int gi0/0/0/1
!
router bgp 100
 bgp router-id 3.3.3.3
 add vpnv4 uni
 !
 neighbor 1.1.1.1
  remote-as 100
  update-source lo0
  add vpnv4 uni
   next-hop-self
  !
 !
 vrf CustA
  rd 100:100
  bgp unsafe-ebgp-policy
  add ipv4 uni
   net 30.30.30.30/32
  !
  neighbor 10.10.134.4
   remote-as 200
   add ipv4 uni
   !
  !
 !
 vrf CustB
  rd 200:200
  bgp unsafe-ebgp-policy
  add ipv4 uni
   net 33.33.33.33/32
  !
  neighbor 10.10.234.4
   remote-as 200
   add ipv4 uni
   !
  !
 !
!
mpls ldp
!