Re: 3750 Outbound Queues

From: Tony Singh <mothafungla_at_gmail.com>
Date: Thu, 24 Oct 2013 14:39:52 +0100

As a side note if anyone has a good ref that shows what
stp/vtp/cdp/pagp/lacp/udld/dtp and any other control frames. and what they map
too it would be good as I haven't had the time to do packet captures to
confirm this default action.

--
BR
Tony
Sent from my iPhone on 3
> On 24 Oct 2013, at 14:35, Tony Singh <mothafungla_at_gmail.com> wrote:
>
> Hi Joe
>
> Your 2636 count seems to map to Q1T2
>
> Nothing seems like it is mapped to 2/2 by default.
>
> But looking at doc cd you can map dscp/cos to this space
> Rack1SW1(config)#mls qos srr-queue output dscp-map queue 2 threshold 2 24
26
> Rack1SW1(config)#mls qos srr-queue output cos-map queue 2 threshold 2 3
> --
> BR
>
> Tony
>
> Sent from my iPhone on 3
>
>> On 22 Oct 2013, at 15:13, Joe Astorino <joeastorino1982_at_gmail.com> wrote:
>>
>> I'm trying to figure out how it is possible for any frames to be queued
>> into queue 2 threshold 2 when there is NOTHING in the dscp to output-q or
>> cos to output-q maps that put ANY frames into Q2T2.  You can see in the
>> below output that nothing is mapped to those queues, yet 2636 packets have
>> been sent into Q2T2
>>
>> I think I remember reading something a long time ago about "system"
traffic
>> being sent into queue 2 but I can't find anything on it.  Anyone know why
>> this might be happening?
>>
>> sh mls qos maps dscp-output-q
>>   Dscp-outputq-threshold map:
>>     d1 :d2    0     1     2     3     4     5     6     7     8     9
>>     ------------------------------------------------------------
>>      0 :    04-03 04-03 04-03 04-03 04-03 04-03 04-03 04-03 04-01 04-02
>>      1 :    04-02 04-02 04-02 04-02 04-02 04-02 03-03 03-03 03-03 03-03
>>      2 :    03-03 03-03 03-03 03-03 02-03 02-03 02-03 02-03 02-03 02-03
>>      3 :    02-03 02-03 03-03 03-03 03-03 03-03 03-03 03-03 03-03 03-03
>>      4 :    01-03 01-03 01-03 01-03 01-03 01-03 01-03 01-03 02-03 02-03
>>      5 :    02-03 02-03 02-03 02-03 02-03 02-03 02-03 02-03 02-03 02-03
>>      6 :    02-03 02-03 02-03 02-03
>>
>> sh mls qos maps cos-output-q
>>   Cos-outputq-threshold map:
>>              cos:  0   1   2   3   4   5   6   7
>>              ------------------------------------
>>  queue-threshold: 4-3 4-2 3-3 2-3 3-3 1-3 2-3 2-3
>>
>>
>> sh mls qos int t6/0/1 st | b enqueued
>>  output queues enqueued:
>> queue: threshold1 threshold2 threshold3
>> -----------------------------------------
>> queue 0:           0           0           0
>> queue 1:           0        2636     1347420
>> queue 2:           0           0      210797
>> queue 3:           0           0    43328378
>>
>>
>> --
>> Regards,
>>
>> Joe Astorino
>> CCIE #24347
>> http://astorinonetworks.com
>>
>> "He not busy being born is busy dying" - Dylan
>>
>>
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>>
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Received on Thu Oct 24 2013 - 14:39:52 ART

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