I have the following setup on my network:
[CCR1016 Concentrator] ----------- L2TP Tunnel over Internet ----------- [RB1100AHx2 CPE]
The CCR1016 runs BGP over public ASN, and I'd like to run BGP on RB1100 too, but using another ASN (and its specific IP[v4/v6] subnets), as an eBGP customer from CCR1016.
The L2TP interface on the client side receives an IPv4 /32 from the CCR1016 (which is given to it by a radius attribute), and is unnumbered for IPv6.
However, there are also delegated IPv4 and IPv6 subnets from the CCR to the RB1100.
I managed to setup eBGP multihop (using one of those delegated IPv4/IPv6 as an update-source) between boths, but the announced IPv6 prefix is not installed on the concentrator, because of an unreachable gateway. IPv4 is fine, because of the IPv4 wan address on the l2tp tunnel:
Code: Select all
0 ADS dst-address=193.17.192.96/28 gateway=193.17.192.250
gateway-status=193.17.192.250 reachable via <l2tp-xxxx@xxxxxx> distance=1
scope=30 target-scope=10
0 ADb dst-add 0 ADb dst-address=193.43.214.0/24 gateway=193.17.192.97
gateway-status=193.17.192.97 recursive via 193.17.192.250 <l2tp-xxxx@xxxxxx>
distance=20 scope=30 target-scope=30 bgp-as-path="44097" bgp-local-pref=600 bgp-med=10
bgp-origin=igp bgp-communities=34019:44090,34019:64512,65512:20005
received-from=ebgp-ccavadore-v4
Code: Select all
0 ADS dst-address=2001:67c:1740:200::/62 gateway=<l2tp-xxxx@xxxxxx>
gateway-status=<l2tp-xxxx@xxxxxx> reachable distance=1 scope=30
target-scope=10
0 Db dst-address=2001:67c:ec::/48 gateway=2001:67c:1740:200::1
gateway-status=2001:67c:1740:200::1 unreachable distance=20 scope=30 target-scope=40
bgp-as-path="44097" bgp-local-pref=600 bgp-med=10 bgp-origin=igp
bgp-communities=34019:44090,34019:64512,65512:20005 received-from=ebgp-ccavadore-v6
I tried to play with scope & target-scope attribute, but it seems that nexthops cannot be resolved through interface routes (as said by the wiki), so I do not see any solution for me there.
Thanks for your help !
Regards
Acontios
