ASA 5505 Site-to-Site VPN dropping at end of lifetime
I have 4 ASA 5505's with Site-to-Site IPSEC VPN tunnels built between them. One of the tunnels stays up just fine but the other 2 drop at the end of the SA lifetime for a period of time equal to 10% of the SA lifetime.
Orignially, I had the the lifetime set to 1 hour and the tunnels would drop for 6 minutes. I changed the lifetime to 8 hours (480 minutes) and they dropped for 48 minutes. I've gone over the configurations and the only differences I can find is that the sites where the tunnel drops have the outside interface forwarded to an VOIP server and all ports but SIP blocked.
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...