Hi Manju, > However, are there known issues with IKEv1 with short rekey timers and > how does IKEv2 overcome this problem? IKEv1 has no exchange collision handling, so if both ends rekey concurrently, all bets are off, IKEv2 has (except for reauthentication, so use regular rekeying to avoid problems). Regards, Tobias