Re: show mls qos

It's not the same for COS and DSCP.
A switch works mainly at L2, so L3's DSCP would pass unnoticed (and
unchanged) when QoS is disabled.
But COS has to be regenerated along the new frame at L2 (only when
there's a COS field to begin with, i.e. usually a trunk).

I'm not sure what a switch does there, not even sure all switches do the
same. I would suspect they send COS 0.

-Carlos

marc edwards @ 29/04/2012 20:13 -0300 dixit:
> It will ignore markings
>
> regards,
> marc
>
> On Sun, Apr 29, 2012 at 4:06 PM, emir d souza<emir979_at_gmail.com> wrote:
>> Hi experts,
>>
>> Will a switch rewrite cos/dscp markings to "zero" if qos has been disabled?
>> Or does it choose to ignore any markings.
>>
>> #show mls qos
>> QoS is disabled
>> QoS ip packet dscp rewrite is enabled
>>
>> Cheers!
>>
>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net