topic RE: tNetTask & CPU Load in ExtremeSwitching (Other)

tNetTask & CPU Load

Simone_Magagnin — Mon, 15 Sep 2014 20:25:00 GMT

Hi, I have a problem with a Enterasys G3 and CPU load: through MRTG monitoring tool I known that the CPU goes to 98% for a few minutes and then stabilize at around 15-20%. Sometimes this peak causes a reboot of the device. During the peak load, tNetTask process goes to 90% and more.

My G3 have 06.61.12.0005 firmware and only four FC ports used.

What process is this?

Has anyone encountered the same problem?

Thanks a lot

Simone

RE: tNetTask & CPU Load

Jason_Parker — Mon, 15 Sep 2014 21:45:00 GMT

IPNetTask
is referenced to
Ip Stack information

I would investigate by using a sniffer.
It could be tied down to SNMP of the box, MIB walks or even traffic hitting the host that could cause slowness.
Capture of traffic would be best
Jason

RE: tNetTask & CPU Load

Simone_Magagnin — Tue, 16 Sep 2014 13:44:00 GMT

Thanks Jason, i'm going to monitor the device in order to understand if the issue is systematic...this could help me for a sniffer session....you know which kind of traffic could generate the issue?

RE: tNetTask & CPU Load

Jason_Parker — Tue, 16 Sep 2014 15:31:00 GMT

You could start by looking at SNMP traffic but it could be flooding traffic. good luck