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High CPU due to SSH process on 3750 switch

Hi All,

I'm facing high CPU  utilization issue due to a ssh process on 3750 switch. What is the use  of SSH proces in the switch? Can I disable it for troubleshooting?

will there be any impact if I disable it?

#sh processes cpu sorted 5min

CPU utilization for five seconds: 99%/0%; one minute: 66%; five minutes: 46%

PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process

159     1896078    589986       3213  3.96% 10.76% 14.00%   0 Hulc LED Process

165       32871       591      55619 77.42% 33.40%  8.85%   3 SSH Process



2 Replies 2

Arumugam Muthaiah
Cisco Employee
Cisco Employee

Hi Thiyagu,

  • SSH Process might go high if capturing a show tech or some debug is enabled.
  • SSH process spike occurs majorly if large amount of data being sent on the ssh session
  • Check if somebody is logged into and executing commands through an SSH session. The use of CLI commands such as show tech-support over SSH can cause very high CPU usage.
  • Ensure that session time out is enabled for the SSH process. Use the 'session-timeout minutes' line configuration command to set the timeout.
  • This doesnt impact any production traffic.

Do you see the high CPU constantly due to SSH Process? If you see high CPU still, please capture #show proc cpu sort | ex 0.00% multiple time and share the detail.



*** Please rate if the post is useful ***

Regards, Aru *** Please rate if the post useful ***

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend
High CPU due to SSH process on 3750 switch

Errrr ... you're not running IOS version 12.2(58)SE or later, are you?

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