Cisco ASA 5510 hangs once a month

Unanswered Question
Aug 3rd, 2010

I've got a question.

Our Cisco ASA hangs once a month with ssl vpn. It loads the login screen but that's it.I can't login or what so ever..

When I restart the ASA everythings works fine.

Has anyone here experienced this problem also? I have no idea where to look for this problem..


Geert Reijnders

I have this problem too.
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Todd Pula Tue, 08/03/2010 - 07:07

This is more than likely related to a memory leak. What version of ASA code are you currently running?  You may want to disable WebVPN caching as a first step and then monitor the memory utilization on the appliance.  If the issue persists, we will need to enable some memory tracking features in order to isolate further.

R1-ASA5505-01# conf t
R1-ASA5505-01(config)# webvpn
R1-ASA5505-01(config-webvpn)# cache
R1-ASA5505-01(config-webvpn-cache)# disable

Geert Reijnders Tue, 08/03/2010 - 07:31

Thanks for quick reply.

I just disabled the cache for the webvpn. Hopefully this will help. I will update this as I know something more.

As you can see, the memory usage is pretty high...

SSL-Firewall# sh mem

Free memory:       104391152 bytes (39%)

Used memory:       164044304 bytes (61%)

-------------     ----------------

Total memory:      268435456 bytes (100%)


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