I am getting the following error message from two devices on my network:
CRYPTO-4-RECVD_PKT_MAC_ERR: decrypt: mac verify failed for connection id=<removed> local=<removed> remote=<removed> spi=F1E30F16 seqno=0000905D
Cisco decodes the message as:
%CRYPTO-4-RECVD_PKT_MAC_ERR : decrypt: mac verify failed for connection id=[dec]
Explanation MAC verify processing failed. This may be due to the use of the wrong key by either party during the MAC calculations. Some might consider this a hostile event.
Recommended Action Contact the peer's administrator.
Can anyone help me understand this?
I've looked in vain for MAC Verify processing, I've also checked for MAC calculations etc...
I need to know what's causing this error, and whether it is a significant problem. The VPN seems to work, but am I losing performance as a result of this?
Go to Solution.
If you have verified that your keys are correct, it seems this might be a bug.
View solution in original post
Just FYI, I had the same problem on my 1841 routers and upgraded to the latest release of 12.4(T) and have not had the problem since.
That's just what I wanted to hear thanks.
The device is scheudled for an up to a new revision, and this will do nicely for me to get the donwtime.
Thanks for your help.
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