Extended counter showing errors

[sudip.acharya1]

Hi,

I have a 10yr HP blade system that seems to be having issues but need help narrowing down the the exact cause.

Sh Counters int gx/xx

** output omitted**

32 bit counters

10.                      ifOutDiscards = 3239159085

All port counters

24.                      ifOutDiscards = 3239159085

51.                        qos1Outlost = 3239159083

What can I look for to find the culprit?

How can I clear these counters? I tried Clear extended counters but that did not work.

Thanks in advance.

[Chaitra Shree]

Hi Sudip,

The above counters cannot be cleared. Do you see input queue drops,output drops, CRC/ input errors incrementing on the interface connecting the HP blade system ? ( under the show int <> command ). You will need to troubleshoot the issue depending on the counter which increments.

qos1Outlost counter signifies that less prioritized traffic is being dropped and logged under the counter for that queue. Do you have QoS configured on that interface ? If yes, check for QoS drops under the command "show queueing int <>". You may have to increase the resources available for QoS on that interface.

Regards,

Chaitra

[sudip.acharya1]

Hi Chaitra,

Under sho int, i do see the output drops:

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 35544

show queueing int

Interface GigabitEthernet8/48 queueing strategy:  Weighted Round-Robin

  Port QoS is enabled

  Port is untrusted

  Extend trust state: not trusted [COS = 0]

  Default COS is 0

    Queueing Mode In Tx direction: mode-cos

    Transmit queues [type = 1p3q8t]:

    Queue Id    Scheduling  Num of thresholds

    -----------------------------------------

       01         WRR                 08

       02         WRR                 08

       03         WRR                 08

       04         Priority            01

    WRR bandwidth ratios:    5[queue 1]  25[queue 2]  70[queue 3]

    queue-limit ratios:      5[queue 1]  25[queue 2]  40[queue 3]  15[Pri Queue]

    queue tail-drop-thresholds

    --------------------------

    1     70[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

    2     70[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

    3     100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

    queue random-detect-min-thresholds

    ----------------------------------

      1    80[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

      2    80[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

      3    50[1] 60[2] 70[3] 80[4] 90[5] 100[6] 100[7] 100[8]

    queue random-detect-max-thresholds

    ----------------------------------

      1    100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

      2    100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

      3    60[1] 70[2] 80[3] 90[4] 100[5] 100[6] 100[7] 100[8]

    WRED disabled queues:   

    queue thresh cos-map

    ---------------------------------------

    1     1      1

    1     2     

    1     3     

    1     4     

    1     5     

    1     6     

    1     7     

    1     8     

    2     1      0

    2     2     

    2     3     

    2     4     

    2     5     

    2     6     

    2     7     

    2     8     

    3     1      4

    3     2      2

    3     3      3

    3     4      6

    3     5      7

    3     6     

    3     7     

    3     8     

    4     1      5

    Queueing Mode In Rx direction: mode-cos

    Receive queues [type = 1q8t]:

    Queue Id    Scheduling  Num of thresholds

    -----------------------------------------

       01         WRR                 08

    WRR bandwidth ratios:  100[queue 1]

    queue-limit ratios:    100[queue 1]

    queue tail-drop-thresholds

    --------------------------

    1     100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

    queue thresh cos-map

    ---------------------------------------

    1     1      0 1 2 3 4 5 6 7

    1     2     

    1     3     

    1     4     

    1     5     

    1     6     

    1     7     

    1     8     

  Packets dropped on Transmit:

    queue     dropped  [cos-map]

    ---------------------------------------------

    1                        0  [1 ]

    2                    35544  [0 ]

    3                        0  [4 2 3 6 7 ]

    4                        0  [5 ]

  Packets dropped on Receive:

    BPDU packets:  0

    queue              dropped  [cos-map]

    ---------------------------------------------

    1                        0  [0 1 2 3 4 5 6 7 ]

These are the QoS settings we have aon the interface, which queue would need to be modified?

wrr-queue bandwidth 5 25 70

wrr-queue queue-limit 5 25 40

wrr-queue random-detect min-threshold 1 80 100 100 100 100 100 100 100

wrr-queue random-detect min-threshold 2 80 100 100 100 100 100 100 100

wrr-queue random-detect min-threshold 3 50 60 70 80 90 100 100 100

wrr-queue random-detect max-threshold 1 100 100 100 100 100 100 100 100

wrr-queue random-detect max-threshold 2 100 100 100 100 100 100 100 100

wrr-queue random-detect max-threshold 3 60 70 80 90 100 100 100 100

wrr-queue cos-map 1 1 1

wrr-queue cos-map 2 1 0

wrr-queue cos-map 3 1 4

wrr-queue cos-map 3 2 2

wrr-queue cos-map 3 3 3

wrr-queue cos-map 3 4 6

wrr-queue cos-map 3 5 7

Thanks.

[Chaitra Shree]

Hi Sudip,

The output drops seen on the interface is same as the QoS drops seen on Queue 2 :

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops:  35544

    queue     dropped  [cos-map]

     ---------------------------------------------

     1                        0  [1 ]

   2                    35544   [0 ]

    3                        0  [4 2 3 6 7 ]

     4                        0  [5 ]

So you need to look at queue 2.

The below link might be useful:

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/qos.html

Regards,

Chaitra

[sudip.acharya1]

Thanks again.