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Cisco Bug: CSCuo53926 - Slowport statistics are not properly displayed on 9148S/9250i

Last Modified

Dec 18, 2018

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

6.2(13)FM(0.68) 6.2(9)FM(0.50)

Description (partial)

Symptom:slow port statistics as displayed in the output of commands <i>show process creditmon slowport-monitor-events</i> and <i>show logging onboard slowport-monitor-events</i> does not show "oper delay" value properly when timeout discards are happening for that port.

Example: Suppose that a slow device connected to the interface fc1/10 provides R_RDY delay of 50ms for every frame. Due to this, timeout drops are happening for fc1/10. The oper delay value is expected to be 50ms. But the output of <i>show process creditmon slowport-monitor-events</i> does not show the oper delay correctly.

<pre>
switch# show interface fc1/10 counters details | i timeout
      1324134 timeout discards, 0 credit loss
switch# show process creditmon slowport-monitor-events
`show process creditmon slowport-monitor-events`

        Module: 01      Slowport Detected: YES
=========================================================================
 Interface = fc1/10
----------------------------------------------------------------
| admin  | slowport  | oper  |            Timestamp            |
| delay  | detection | delay |                                 |
| (ms)   | count     | (ms)  |                                 |
----------------------------------------------------------------
|  1     |        32 |   12  | 1. 05/12/15 20:06:07.893        |
|  1     |        31 |   23  | 2. 05/12/15 20:06:07.784        |
|  1     |        30 |    8  | 3. 05/12/15 20:05:52.865        |
|  1     |        28 |   44  | 4. 05/12/15 20:05:37.955        |
|  1     |        27 |   34  | 5. 05/12/15 20:05:37.845        |
|  1     |        26 |   45  | 6. 05/12/15 20:05:22.965        |
|  1     |        25 |   21  | 7. 05/12/15 20:05:22.855        |
|  1     |        24 |    6  | 8. 05/12/15 20:05:07.853        |
|  1     |        22 |   23  | 9. 05/12/15 20:04:52.914        |
|  1     |        21 |   50  |10. 05/12/15 20:04:52.804        |
----------------------------------------------------------------
</pre>
Conditions:Only affects MDS 9250i and MDS 9148S, when <i>system timeout slowport-monitor</i> is configured in the switch.
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