high cpu utilisation in 2960x switches

[mahimkaleem]

Hi,

I am facing high utilisation 

100
   90
   80                      *
   70                      *
   60                      *
   50 *       *           *** ***  * *   *  * * *         **  *     *
   40 **********************************************************************
   30 ######################################################################
   20 ######################################################################
   10 ######################################################################
     0....5....1....1....2....2....3....3....4....4....5....5....6....6....7..
               0    5    0    5    0    5    0    5    0    5    0    5    0
                   CPU% per hour (last 72 hours)
                  * = maximum CPU%   # = average CPU%

Switch#sh processes cpu sorted
CPU utilization for five seconds: 30%/0%; one minute: 32%; five minutes: 31%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
 161    88077042    12563877       7010 14.96% 14.93% 14.96%   0 Hulc LED Process
 130     1897730      502571       3776  0.90%  0.89%  0.89%   0 hpm counter proc
 206      347031     2807801        123  0.24%  0.18%  0.14%   0 IP Input       
   2        1911      100515         19  0.05%  0.00%  0.00%   0 Load Meter     
 219      114032      521729        218  0.05%  0.02%  0.00%   0 Spanning Tree  
 173      268297      200292       1339  0.05%  0.04%  0.05%   0 HRPC qos request
 182      591282      167525       3529  0.05%  0.10%  0.11%   0 Power RPS Proces
 101       38552     2512825         15  0.05%  0.00%  0.00%   0 apm86xxx_enet_pr
   9           0           1          0  0.00%  0.00%  0.00%   0 DiscardQ Backgro
  10           0           2          0  0.00%  0.00%  0.00%   0 Timers      

As it can be seen Hulc LED process is utilising more than 14% .

Switch is not stacked.

Please help!!!

[Dragan Ilic · Accepted solution]

Nothing strange for this catalyst serie...you can find a lot of answers online related to that problem - I think that even cisco somewhere stated that observed utilization on 2960x series is correct and that it is normal behavior.

BTW it's a huge difference between them and ie regular 2960 or 2960S...

So - I think you should leave them working as they are and that's it...

BR,

Dragan

[mahimkaleem]

Thank you for the reply 

Could you please help me in stopping these out put queue drops.

Switch#sh platform port-asic stats drop

Port-asic Port Drop Statistics - Summary
========================================
  Port  0 TxQueue Drop Stats: 0
  Port  1 TxQueue Drop Stats: 15013
  Port  2 TxQueue Drop Stats: 19693
  Port  3 TxQueue Drop Stats: 32596
  Port  4 TxQueue Drop Stats: 36203
  Port  5 TxQueue Drop Stats: 0
  Port  6 TxQueue Drop Stats: 84058
  Port  7 TxQueue Drop Stats: 98235
  Port  8 TxQueue Drop Stats: 255503
  Port  9 TxQueue Drop Stats: 6467
  Port 10 TxQueue Drop Stats: 0
  Port 11 TxQueue Drop Stats: 0
  Port 12 TxQueue Drop Stats: 183201
  Port 13 TxQueue Drop Stats: 0
  Port 14 TxQueue Drop Stats: 0
  Port 15 TxQueue Drop Stats: 40297
  Port 16 TxQueue Drop Stats: 1511
  Port 17 TxQueue Drop Stats: 35882
  Port 18 TxQueue Drop Stats: 0
  Port 19 TxQueue Drop Stats: 0
  Port 20 TxQueue Drop Stats: 0
  Port 21 TxQueue Drop Stats: 304294
  Port 22 TxQueue Drop Stats: 0
  Port 23 TxQueue Drop Stats: 10937
  Port 24 TxQueue Drop Stats: 55487
  Port 25 TxQueue Drop Stats: 165419
  Port 26 TxQueue Drop Stats: 278803
  Port 27 TxQueue Drop Stats: 0

  Supervisor TxQueue Drop Statistics
    Queue  0: 0
    Queue  1: 0
    Queue  2: 0
    Queue  3: 0
    Queue  4: 0
    Queue  5: 0
    Queue  6: 0
    Queue  7: 0
    Queue  8: 150
    Queue  9: 0
    Queue 10: 0
    Queue 11: 0
    Queue 12: 0
    Queue 13: 0
    Queue 14: 0
    Queue 15: 0

Port-asic Port Drop Statistics - Details
========================================

  Port 0 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 1 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 15012
      Weight 1 Frames 0
      Weight 2 Frames 1
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 2 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 19693
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 3 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 32595
      Weight 1 Frames 1
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 4 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 36203
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 5 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 6 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 84057
      Weight 1 Frames 1
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 7 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 90911
      Weight 1 Frames 1
      Weight 2 Frames 4
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7319

  Port 8 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 255205
      Weight 1 Frames 0
      Weight 2 Frames 5
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 293

  Port 9 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 6467
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 10 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 11 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 12 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 183198
      Weight 1 Frames 0
      Weight 2 Frames 3
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 13 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
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      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
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      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 14 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
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      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 4
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 5
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 15 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 32825
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7472

  Port 16 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 1511
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 17 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 28562
      Weight 1 Frames 1
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7319

  Port 18 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 19 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 20 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 21 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 304291
      Weight 1 Frames 1
      Weight 2 Frames 2
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 22 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 23 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 10936
      Weight 1 Frames 0
      Weight 2 Frames 1
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 24 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 55334
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 153

  Port 25 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 158097
      Weight 1 Frames 1
      Weight 2 Frames 2
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7319

  Port 26 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 278800
      Weight 1 Frames 2
      Weight 2 Frames 1
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 27 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
  Supervisor TxQueue Drop Statistics
    Queue  0: 0
    Queue  1: 0
    Queue  2: 0
    Queue  3: 0
    Queue  4: 0
    Queue  5: 0
    Queue  6: 0
    Queue  7: 0
    Queue  8: 150
    Queue  9: 0
    Queue 10: 0
    Queue 11: 0
    Queue 12: 0
    Queue 13: 0
    Queue 14: 0
    Queue 15: 0

[Mark Malone · Accepted solution]

Hi thats not really high cpu thats actually ok and that output is from 72hr which means it only spiked to 80 during that period it did not stay at that level , its running on average 30-40

second the HULC is a bug so cpu is only running at 15% in reality

you dont have a cpu issue here , if it sits at 60-70 or above constant  then you might want to start looking at cpu

[mahimkaleem]

thank you for the reply.

There are many drops in output queues. how do i stop them. 

Switch#sh platform port-asic stats drop

Port-asic Port Drop Statistics - Summary
========================================
  Port  0 TxQueue Drop Stats: 0
  Port  1 TxQueue Drop Stats: 15013
  Port  2 TxQueue Drop Stats: 19693
  Port  3 TxQueue Drop Stats: 32596
  Port  4 TxQueue Drop Stats: 36203
  Port  5 TxQueue Drop Stats: 0
  Port  6 TxQueue Drop Stats: 84058
  Port  7 TxQueue Drop Stats: 98235
  Port  8 TxQueue Drop Stats: 255503
  Port  9 TxQueue Drop Stats: 6467
  Port 10 TxQueue Drop Stats: 0
  Port 11 TxQueue Drop Stats: 0
  Port 12 TxQueue Drop Stats: 183201
  Port 13 TxQueue Drop Stats: 0
  Port 14 TxQueue Drop Stats: 0
  Port 15 TxQueue Drop Stats: 40297
  Port 16 TxQueue Drop Stats: 1511
  Port 17 TxQueue Drop Stats: 35882
  Port 18 TxQueue Drop Stats: 0
  Port 19 TxQueue Drop Stats: 0
  Port 20 TxQueue Drop Stats: 0
  Port 21 TxQueue Drop Stats: 304294
  Port 22 TxQueue Drop Stats: 0
  Port 23 TxQueue Drop Stats: 10937
  Port 24 TxQueue Drop Stats: 55487
  Port 25 TxQueue Drop Stats: 165419
  Port 26 TxQueue Drop Stats: 278803
  Port 27 TxQueue Drop Stats: 0

  Supervisor TxQueue Drop Statistics
    Queue  0: 0
    Queue  1: 0
    Queue  2: 0
    Queue  3: 0
    Queue  4: 0
    Queue  5: 0
    Queue  6: 0
    Queue  7: 0
    Queue  8: 150
    Queue  9: 0
    Queue 10: 0
    Queue 11: 0
    Queue 12: 0
    Queue 13: 0
    Queue 14: 0
    Queue 15: 0

Port-asic Port Drop Statistics - Details
========================================

  Port 0 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
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      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 1 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 15012
      Weight 1 Frames 0
      Weight 2 Frames 1
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 2 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 19693
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 3 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 32595
      Weight 1 Frames 1
      Weight 2 Frames 0
    Queue 2
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      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
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  Port 4 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 36203
      Weight 1 Frames 0
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    Queue 2
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      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 5 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 6 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 84057
      Weight 1 Frames 1
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 7 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 90911
      Weight 1 Frames 1
      Weight 2 Frames 4
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7319

  Port 8 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 255205
      Weight 1 Frames 0
      Weight 2 Frames 5
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 293

  Port 9 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 6467
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 10 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 11 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 12 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 183198
      Weight 1 Frames 0
      Weight 2 Frames 3
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 13 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 14 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 4
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 5
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 15 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 32825
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7472

  Port 16 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 1511
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 17 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 28562
      Weight 1 Frames 1
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7319

  Port 18 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 19 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 20 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 21 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 304291
      Weight 1 Frames 1
      Weight 2 Frames 2
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 22 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 23 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 10936
      Weight 1 Frames 0
      Weight 2 Frames 1
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 24 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 55334
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 153

  Port 25 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 158097
      Weight 1 Frames 1
      Weight 2 Frames 2
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 7319

  Port 26 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 278800
      Weight 1 Frames 2
      Weight 2 Frames 1
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0

  Port 27 TxQueue Drop Statistics
    Queue 0
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 1
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 2
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
    Queue 3
      Weight 0 Frames 0
      Weight 1 Frames 0
      Weight 2 Frames 0
  Supervisor TxQueue Drop Statistics
    Queue  0: 0
    Queue  1: 0
    Queue  2: 0
    Queue  3: 0
    Queue  4: 0
    Queue  5: 0
    Queue  6: 0
    Queue  7: 0
    Queue  8: 150
    Queue  9: 0
    Queue 10: 0
    Queue 11: 0
    Queue 12: 0
    Queue 13: 0
    Queue 14: 0
    Queue 15: 0

[Mark Malone]

Port-asic drops is over subscription of the interfaces can be caused by too much traffic or by micro burst traffic that for short periods over whelms the interface , do you have qos enabled at all ? 

[mahimkaleem]

No we havent enabled QOS

[Mark Malone]

whats connected to the switch pcs,phones, servers ?

you could enable mls qos on the switch to allow for queuing at interface level it may prevent so many drops but you might have to tweak it as well when enabled to suit your traffic depending on what the results are and depending on what you have connected to the switch , as i said some of these drops are from superscription depending on the devices connected they can be sending too much traffic for the port to handle

do you see these drops in the output section of each interface as well or just on platform outputs

heres a link that explains how to enable qos on 2960x

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/qos/configuration_guide/b_qos_152ex_2960-x_cg/b_qos_152ex_2960-x_cg_chapter_011.html

[mahimkaleem]

This switch is connected to PCs and ip phones.

There are output drops on interface aswell

Switch#sh interfaces | include Total output
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 19693
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 15013
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 36203
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 32596
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 84058
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 269918
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 98235
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 6467
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 183201
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1511
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 41047
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 35882
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 304457
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 55487
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 15163
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 279304
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 165419
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 36275
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 140017
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 42733
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 64554
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 906977
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 9
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 532221
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

[Mark Malone]

How old are the counters ? if there up a long time you can expect drops on output queue you will never fully get rid of them as some are legitimate drops

for our 2960 switches at layer 2 with pc and phones we have applied mls qos trust dscp on the uplink and the edge ports , this trusts voice traffic prioritizes it and puts the other traffic into specific mls queues to alleviate drops , you will need to enable mls qos globally as well but if your traffic is being caused by micro burst traffic from certain applications on the pcs you would need to look at the app rather than the switch as micro bursts will nearly always cause drops as they spike oversubscribing the interface for a few seconds at a time resuming in drops

[mahimkaleem]

ok thank you will implement qos and check.