L3VPN Inter-AS Option B with Inter-AS TE

Question

                 Is it possible to route L3VPN traffic through a Inter-AS TE tunnel when Option B is the configuration? If you can please post sample configs with explanations.

Answer 1

can you try to usedestination IP in the hean end that point to the tail-end IP
and use static route that for this IP point to the TE tunnel
e.g.
tunnelx
tunnel destination 2.2.2.2
ip route 2.2.2.2 255.255.255.255 tunnel x
then you may staticaly route traffic to TE tunnel for Layer 3 VPN traffic or autoroute once the next hope is chnaged to 2.2.2.2
To change the next hope of L3VPN MP-iBGP using route-map by making it using the tailend IP (2.2.2.2 ) under the relevant bgp address-family/VPNv4 at the ASBR/RR toward the desired PE ( head end )
e.g
ASBR/RR
bgp xx
address-family vpnv4neighbor [head-end/PE IP] route-map map1 out
route-map map1 permit
set ip next-hope 2.2.2.2
in the path option you should have both your AS ASBR and the remote AS ASBR IPs
in the ASBR of both ends in te phsycial interface facing the other AS:
int x/x
mpls traffic-eng passive-interface nbr-te-id [next-hop ASBR IP ] nbr-igp-id ospf [next-hop ASBR IP]
and let us know if this help !
Message was edited by: Marwan