Re: mls qos map cos-dscp

Thanks guys, that has certainly cleared up everything.

On Mon, Aug 30, 2010 at 2:36 PM, Narbik Kocharians <narbikk_at_gmail.com>wrote:

> *The output of the following show commands displays the default DSCP to
> CoS mapping, it means that IF the "MLS QOS" and Mls qos trust dscp
> command is configured, then, the DSCP marking of incoming packets are
mapped
> to outgoing CoS values according to the DSCP-CoS map.*
>
> * *
>
> *The incoming DSCP values are shown in the d1 column and the d2 row,
> whereas, the outgoing CoS values are identified in the body of this
display,
> this is the intersection of d1 column and d2 row.*
>
>
>
> *Therefore, I agree with Bob, DSCP 10 will map to an outgoing CoS value of
> 1, whereas, the DSCP value of 40 will map to a **CoS** value of 5.*
>
> * *
>
> *But remember unlike DSCP-DSCP mapping that can be applied to a given
> interface, this table effects the entire switch.*
>
>
>
> *SW2#Sh mls qos map dscp-cos*
>
>
>
> Dscp-cos map:
>
> d1 : d2 0 1 2 3 4 5 6 7 8 9 *Note by
> default DSCP 10 maps to **CoS***
>
> ---------------------------------------------- *1*
>
> 0 : 00 00 00 00 00 00 00 00 01 01
>
> 1 : *01* 01 01 01 01 01 02 02 02 02
>
> 2 : 02 02 02 02 03 03 03 03 03 03
>
> 3 : 03 03 04 04 04 04 04 04 04 04
>
> 4 : 05 05 05 05 05 05 05 05 06 06
>
> 5 : 06 06 06 06 06 06 07 07 07 07
>
> 6 : 07 07 07 07
>
>
>
>
>
> *SW2#Sh mls qos map dscp-cos*
>
>
>
> Dscp-cos map:
>
> d1 : d2 0 1 2 3 4 5 6 7 8 9 *Note by
> default DSCP 40 maps to **CoS***
>
> ---------------------------------------------- *5*
>
> 0 : 00 00 00 00 00 00 00 00 01 01
>
> 1 : 01 01 01 01 01 01 02 02 02 02
>
> 2 : 02 02 02 02 03 03 03 03 03 03
>
> 3 : 03 03 04 04 04 04 04 04 04 04
>
> 4 : *05* 05 05 05 05 05 05 05 06 06
>
> 5 : 06 06 06 06 06 06 07 07 07 07
>
> 6 : 07 07 07 07
>
> *
> *
>
> On Sun, Aug 29, 2010 at 7:09 PM, Bob Sinclair <bob_at_bobsinclair.net>wrote:
>
>> Hello Emir,
>>
>> Your DSCP values will be mapped to CoS values based on the dscp-cos map.
>> Here is the default dscp-cos map on a current 3560:
>>
>>
>> SW1#sh mls qos map dscp-cos
>> Dscp-cos map:
>> d1 : d2 0 1 2 3 4 5 6 7 8 9
>> ---------------------------------------
>> 0 : 00 00 00 00 00 00 00 00 01 01
>> 1 : 01 01 01 01 01 01 02 02 02 02
>> 2 : 02 02 02 02 03 03 03 03 03 03
>> 3 : 03 03 04 04 04 04 04 04 04 04
>> 4 : 05 05 05 05 05 05 05 05 06 06
>> 5 : 06 06 06 06 06 06 07 07 07 07
>> 6 : 07 07 07 07
>>
>>
>> SW1#
>>
>>
>> Note that is simply divides the dscp value by 8 throws away the remainder.
>>
>> So dscp 10 would map to cos 01 and dscp 40 would map to 05.
>>
>> HTH,
>>
>> Bob Sinclair CCIE 10427 CCSI 30427
>> CIERS2 Online Instructor
>> www.tinyurl.com/ciers2online
>>
>> > -----Original Message-----
>> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
>> > emir d souza
>> > Sent: Sunday, August 29, 2010 9:48 PM
>> > To: Cisco certification
>> > Subject: mls qos map cos-dscp
>> >
>> > Hi,
>> >
>> > I'm a bit confused. My 3560 has this set: mls qos map cos-dscp 0 8 16
>> > 24 34
>> > 46 48 56
>> >
>> > Question: What if I have set dscp markings for DSCP 10 or 40? What CoS
>> > values will they be mapping to?
>> >
>> > Regards,
>> >
>> > emir
>> >
>> >
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>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com <http://www.micronicstraining.com/>
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Received on Mon Aug 30 2010 - 15:20:15 ART