CPU USAGE AT 90% ON ROUTER!

[Amos Kafwembe]

good day fellaz.

i have a 1900 router...almost new. from this morning i noticed it started hanging and upon troubleshooting i have noticed that the CPU process looks like so;

#sh proc cpu

CPU utilization for five seconds: 93%/31%; one minute: 92%; five minutes: 74%

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

   1           0          11          0  0.00%  0.00%  0.00%   0 Chunk Manager

   2          56         188        297  0.00%  0.01%  0.00%   0 Load Meter

   3           4           1       4000  0.00%  0.00%  0.00%   0 LICENSE AGENT

   4           0           1          0  0.00%  0.00%  0.00%   0 RO Notify Timers

   5        2948         202      14594  0.00%  0.33%  0.28%   0 Check heaps

   6          16          68        235  0.00%  0.00%  0.00%   0 Pool Manager

   7           0           1          0  0.00%  0.00%  0.00%   0 DiscardQ Backgro

108      263388      229210       1149     57.87%      57.29%       37.52%   0 IP Input

why is my IP Input process so high? this router has been working just fine so far. there are no routing protocols on it, just static routes only. what is going on guys?

[paolo bevilacqua]

Likely you have enough traffic to justify that. You did not even mention what exact model router do you have and what average traffic, so it's impossible to say more.

[franck]

Amos

Can you explained which subnet mask are you using on your interface ?

Do you used a secondary ip address ?

Or can you send us a sh ip int of your router.

The IP Input process is often a problem regarding the fast switching.