topic RE: Summit Stack bcmDPC high cpu utilization in ExtremeSwitching (EXOS/Switch Engine)

Summit Stack bcmDPC high cpu utilization

Jim_Herold — Tue, 24 Feb 2015 00:41:00 GMT

I have a stack of Summit 450 and 460 switches. All are running XOS 12.6.2.10 (I know it's old, but we don't pay support so can't upgrade). We regularly have a situation where the management interface (SSH or Telnet) is slow to respond. Traffic does not appear to be affected in any way. Top shows the bcmDPC process is using 60 to 70% of the CPU when this happens. It seems like it started when we expanded the stack from 3 to 4 switches about 6 months ago.

Anyone have any thoughts on what bcmDPC is and what might trigger it to use so much CPU?

RE: Summit Stack bcmDPC high cpu utilization

Sumit_Tokle — Tue, 24 Feb 2015 00:54:00 GMT

You will find the PD.
Please contact the Extreme TAC and they will suggest you to upgrade the software. It's issues with the broadcom and extreme uses broadcom as switch chip.

RE: Summit Stack bcmDPC high cpu utilization

Sumit_Tokle — Tue, 24 Feb 2015 00:55:00 GMT

Temp solution would be to reboot the slot/stack

RE: Summit Stack bcmDPC high cpu utilization

Jim_Herold — Tue, 24 Feb 2015 00:58:00 GMT

'k, thanks. I've been avoiding the reboot of the slot due to the interruption to services, but perhaps the time has come.

RE: Summit Stack bcmDPC high cpu utilization

PARTHIBAN_CHINN — Tue, 24 Feb 2015 07:30:00 GMT

It's a bug in x460 Upgrade will fix it

RE: Summit Stack bcmDPC high cpu utilization

Edson_Fuchigami — Fri, 30 Oct 2015 19:48:00 GMT

https://gtacknowledge.extremenetworks.com/articles/Solution/Traffic-loss-and-bcmDPC-process-running-...