Hello,

I have the following scenario:

MT1 (LAN) -> Cisco -> (LAN )MT2 -> Internet

MT1 and MT2 LAN's are directly connected to the CISCO. I need to setup a default route in MT1 pointing to the MT2 LAN IP to offer internet to MT1. The CISCO router has only the directly connected routes (no default route). I tried using the recursive routing with scope and target scope and managed to make the default route reachable. However, traceroutes stop at the CISCO device. Is there any way to make this work? I am temporarily using an IP-IP tunnel.

Thanks in advance,
Ibra

Hi IbraR,
recursive routing is used to check what's behind your first hop, not to jump it, therefore your packets are travelling from your LAN through the CISCO router and if it doesn't have the default route it will always drop the packet because it doesn't know where to forward it.

IMHO the only way to have this setup working is using a tunnel, I would personally use an EoIP tunnel so I can bridge it with the MT2 LAN and I'll have the MT2 LAN behind MT1 (aka CISCO router will become transparent)

Hi Matteo,

Thanks for your reply. I am currently using an IP-IP tunnel as I said before. I know that you can use the scope/target scope pair in BGP environments, but never had to think about the default route in the middle hops until now. Anyway, if there is no other way I will continue with the IPIP.

Grazie,
Ibra