Does anyone know what could be causing this error?
%CRYPTO-4-RECVD_PKT_MAC_ERR: decrypt: mac verify failed for connection id=
I have an GRE over IPSec VPN tunnel using ISAKMP that keep generating this error.
I have verified that the shared keys are the same on both ends. I check the error lookup tool and it seems to point to that.
I also tried disabling CEF and Fast Switching on the interface but that hasn't helped either.