S2S VPN 2 VRs not working

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S2S VPN 2 VRs not working

L1 Bithead



I have an external IP /30 network. I also have another external IP /28.

I have created 2 VRs (with their ZONES).

VR1 is the main router with the /30 IP used for Internet connection.

VR2 is the second router (the one I just created)

I assigned one of the /28 IP to the second VR. When I terminate a S2S vpn (from another PA Box) to this IP(/28) the IPSEC tunnel is up but there is no inbound interesting traffic .

There is outbound traffic, the other site tries to reply to the ping request but no incoming traffic is captured on the box I have the problem(no drops, no nothing). 


On the other side there both in/out bound traffic.


When I terminate the S2S tunnel with the /30 IP (eventhough the tunnel is assigned to a zone on the second VR) the IPSEC tunnel is working as expected.


Any suggestion/thoughts


Thank you in advance


Cyber Elite
Cyber Elite


My guess would be asymmetric routing. Any reason you are using 2 VR's? Just asking since I usually like to keep things simple.


That was my initial though but there is no other device between the 2 boxes...

The first one is sending paccket, second is accepting them and replies.

But no replies on the first one (no drops no nothing) I will keep on searching.


In any case is this a valid approach (assuming that is done correctly should it be working)?


The reason is the integration of 2 networks (one is quite sensitive). I want to have different routing table for each VR...

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