RE: QOS

From: Phillip.McCollum@ins.com
Date: Fri Dec 21 2007 - 17:02:57 ART

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http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/relea
se/12.2_25_see/configuration/guide/swqos.html#wp1031906

"...Even if a port was previously set to trust DSCP, CoS, or IP
precedence, this command overrides the previously configured trust
state, and all the incoming CoS values are assigned the default CoS
value configured with this command. If an incoming packet is tagged, the
CoS value of the packet is modified with the default CoS of the port at
the ingress port."

Phillip
http://blog.humanmodem.com

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Athaide, Dwayne
Sent: Friday, December 21, 2007 9:41 AM
To: Joseph Saad; Lora Ganeva
Cc: groupstudy
Subject: RE: QOS

Thanks one more question
On an interface what takes precedence for eg if you have the mls trust
qos and the mls qos override command as well.
thanks

________________________________

From: Joseph Saad [mailto:joseph.samir.saad@gmail.com]
Sent: Friday, December 21, 2007 7:55 AM
To: Lora Ganeva
Cc: Athaide, Dwayne; groupstudy
Subject: Re: QOS

and "mls qos" in either cases.

On Dec 21, 2007 5:33 PM, Lora Ganeva <lganeva@mobiltel.bg> wrote:

        For me this is OK but you must add

        Mls qos trust dscp interface level command.

        BR,
        Lora

        P.S. I use this in my own network and it is working:)

        -----Original Message-----
        From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf Of Athaide, Dwayne
        Sent: 21 dEKEMWRI 2007 G. 01:23
        To: groupstudy
        Subject: QOS

        Question states that the incoming DSCP values matching any of
the
        following IP Prec valves of 1,2,3,4 should be reverted back to
DSCP 0.
        Would my way be correct as well?

        thanks

        My solution

        class-map match-all SET-DSCP

         match ip dscp cs1 cs2 cs3 cs4

        !

        !

        policy-map SET-DSCP

         class SET-DSCP

          set dscp default

        Answer guide

        mls qos map dscp-mutation DSCP0 8 16 24 32 to 0

        Dwayne Athaide | Network Architecture Specialist | EPCO, Inc.
|

        2727 N Loop West Houston, TX 77008

        713.803.2401 office | 713 803 2999 fax| dathaide@eprod.com
        <mailto:dathaide@eprod.com> |

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