SSL_VPN process consumes 100% CPU on UC520

[Jernej Vodopivec]

Hi,

has anyone experienced the same problem as I did: we were using IPsec for remote access for a long time. Without any problem.

We've migated to ssl vpn (anyconnect) two months ago. We're experiencing problem with very slow network throughput. I've discovered CPU in at 100% at the time problem occurs. SSL_VPN and IP input processes consume all resources.

I've tested with sw 8.6.1 and 8.6.2 - and have experienced the same problem with both versions.

[JohnDoe88]

What is the file size of the anyconnection client you are using ? It should be around 5M.  You are using the wrong anyconnect client file if file size is more than that.

[Jernej Vodopivec]

I'm using standard anyconnect pkg file from cisco.com support:

32453012 Aug 21 2013 22:44:06 +02:00 webvpn/anyconnect-win-3.1.04063-k9.pkg

Which one should I use instead?

[Jontheuser]

https://supportforums.cisco.com/message/3946589#3946589

[Alexander Maroukian · Accepted solution]

Hello Jernej,

You should use 2.5.6005 with UC500.

Higher versions may lead to 100% resource utilization.

HTH,

Alex

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[Jernej Vodopivec]

Thank you all! It works ok now.