Good morning, strangely one my vpn site2site stopping to work. The
error message I get when I try to begin a new session is: "Unable to
resolve peer GW (VPN Error code 02)".

I found nowhere any indications about the cause of this error, could
you help me?

The encryption domains are coherent on both sides, on my side we have
a CheckPoint over Nokia, on the other side ... I don't know.

Best regards
Marco

On 20 Nov, 09:01, marco74 <marco.canov... [at] gmail.com> wrote:
> Good morning, strangely one my vpn site2site stopping to work. The
> error message I get when I try to begin a new session is: "Unable to
> resolve peer GW (VPN Error code 02)".
>
> I found nowhere any indications about the cause of this error, could
> you help me?
>
> The encryption domains are coherent on both sides, on my side we have
> a CheckPoint over Nokia, on the other side ... I don't know.
>
> Best regards
> Marco

Probably we found the problem: on our firewall there are two site2site
VPN, on both of them there is the same network family (to be sincere
with different subnet masks ...)

VPN1 = 172.30.0.0/16
VPN2 = 172.30.4.181/32 + 172.30.4.195/32

Removing the larger mask from the first encryption domain we got no
more errors. It seems that the firewall detect a conflictual setting
and doesn't take any decision.