02-02-2018 07:33 AM - edited 03-08-2019 01:41 PM
Hi All
It appears we have hit an issue with our 3850s running an old version of code, the fed process seems to be maxing out the CPU.
Can anyone tell me if this will have any impact when forwarding traffic?
As forwarding is done in hardware I would expect not, however 100% cpu must me having an impact somewhere?
what is the best fix, IOS upgrade ?
cheers
Solved! Go to Solution.
02-03-2018 01:16 AM
02-02-2018 08:26 AM
02-02-2018 09:39 AM
02-03-2018 01:01 AM
Hi
just for info, all 4 cpus are running at 100%.
would this cause traffic forwarding issues ?
02-03-2018 01:16 AM
02-02-2018 10:02 AM - edited 02-02-2018 10:05 AM
Hi,
If this switch is in production, it is critical to your environment and the CPU is100%, all the time, you need to fix it right away as it will crash sooner than later. As Mark said, 3.6.6 is pretty good. With 3.6.6 the CPU will be ok, but the memory still at 40% on a simple layer-2 box which is not good. Oh, well 40 is better than 80 or 90. In general, Cisco 3850s run high on CPU or memory or both.
HTH
02-02-2018 03:25 PM - edited 02-02-2018 05:02 PM
Exactly what "old" version?
It could be CSCuo14511 or CSCux85960.
High CPU Utilization on Catalyst Switches due to IPv6 Multicast Traffic
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