cisco asa high cpu and hangs

secureIT · ‎12-27-2013

Hi All,

I am having a cisco ASA5510 - 8.2(5) version in standalone mode. Randomly this firewall gets high cpu have to reboot it everytime.

during the issue, when enter show cpu usage, im getting core cpu as 99% after 5 minutes. Hence getting a console output also takes time.

I have just configured syslog and monitoring it. Apart from that do i need to check anything else right now. Because during the problem i dont get any

access to the fw. After reboot it works for sometime, and if we check connection count/cpu/memory etc all found to be normal.

pls help.

Maykol Rojas · ‎12-29-2013

Have you tried to check any possible Loop on the network?

The fact that you reload the ASA and the issue goes away sounds like a conn is stuck on the ASA or there is a process consumming the CPU.

Get the show process CPU when the issue happens, you will be able to know what is causing it.

Mike

secureIT · ‎12-29-2013

Thanks Mike,

Any other commands you would prefer to collect. The console would be very slow to respond during the time of issue.

Maykol Rojas · ‎12-29-2013

No problem.

Clear the counters on the interface. Grab the output of show interface, show traffic and show service-policy.

Mike

secureIT · ‎12-29-2013

Hi Mike,

Since the console access is very very slow, i am planning to collect only the below. please suggest.

show cpu usage

show conn count

show process CPU

terminal page line 0

show local-host | include host|count/limit

Below is also a part of the this thread. Can you please copy past the Bug details or attach in a notepad please, since i do not have access to this bug.

https://supportforums.cisco.com/thread/2258409?tstart=0