I have a problem with an IPSec tunnel between a 877W router and a 1812 router. Configuration on both routers seems to be OK as soon as the tunnel is going up but goes down after a while. I get those logs :
040687: *Apr 16 10:50:44.415 PCTime: ISAKMP:(0):deleting SA reason "Death by retransmission P1" state (R) MM_SA_SETUP (peer X.X.X.X)
040688: *Apr 16 10:50:57.867 PCTime: ISAKMP:(0):deleting SA reason "Death by retransmission P1" state (I) MM_NO_STATE (peer X.X.X.X)
The 1812 router is ending 2 IPSec tunnel and the second one is working fine. The 877W is behind another router which is performing NAT. Is there something special in this configuration?
Any tips or ideas?
Thanks for your help,