3650 Switch Stack Sees High CPU

[coolviper]

Core 0: CPU utilization for five seconds: 7%; one minute: 8%; five minutes: 9%
Core 1: CPU utilization for five seconds: 2%; one minute: 2%; five minutes: 3%
Core 2: CPU utilization for five seconds: 2%; one minute: 2%; five minutes: 2%
Core 3: CPU utilization for five seconds: 1%; one minute: 1%; five minutes: 1%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
6014 2552496 23058905 109 1.76 1.74 1.78 1088 fed
8882 1877038 16390790 145 1.62 1.75 1.77 0 iosd
6016 424516 16981294 154 0.25 0.15 0.15 0 stack-mgr
6491 811550 8784610 92 0.05 0.02 0.04 0 idope.py
6554 247248 30190208 43 0.05 0.08 0.09 0 pdsd
1 1780 1222 1456 0.00 0.00 0.00 0 init

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There was one switch which was having this problem , i restarted the switch after some time another switch started giving this problem

please help

[Leo Laohoo]

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@coolviper wrote:
8882 1877038 16390790 145 1.62 1.75 1.77 0 iosd
6016 424516 16981294 154 0.25 0.15 0.15 0 stack-mgr

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This is a very well-known and "popular" bug: CSCuo14511

[Deepak Kumar]

Hi,

This may a bug and same time tries to control on Excessive mac-address flapping, Aggressive mac-aging timer configuration, Spanning-tree Topology Change Notification (TCN).