How to determine the cause of the ipsec tunnel fall on ASA 5510

Is there an easy way to determine the cause of tunnel VPN ipsec l2l fall on one asa 5510? I have enabled logging, but the buffer is full so fast, I can't find something when it is 24 hours later. I'm working on obtaining a server/aggregator syslog configuration but... until it is complete I need a temporary measure. Suggestions?

Hi Jessica.

For the buffering limit, you can try:

Increase the maximum buffer size.

limit the newspapers to the class of vpn:

Buffered Debug class vpn connection.

On the other hand, you can try him debugs:

Debug crypto peer peer_address condition

debugging cry isa 128

debugging ipsec 128 cry

If you lose the ssh session debugging is disabled.  Finally for the vpn tunnels usually it goes down due to:

Idle time-out

the dead peer detection

remove it from the other end.

HTH.

Tags: Cisco Security

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