From: William Chen (kwchen@netvigator.com)
Date: Mon Dec 22 2003 - 14:16:32 GMT-3
So if the question ask to match for cos 5 and set DSCP to 50, I can set the
ingress interface to trust the cos and set the cos-to-dscp map? Is it a
better and simpler solution than use a policy map?
William Chen
----- Original Message -----
From: "Ozgur Guler (Garanti Teknoloji)" <OzgurG@garanti.com.tr>
To: "William Chen" <kwchen@netvigator.com>; <ccielab@groupstudy.com>
Sent: Monday, December 22, 2003 5:26 PM
Subject: RE: Catalyst 3550 QoS
> that is configurable actually.
> the default is both values are modified.(dscp, cos)
> but with 12.1(11)EA1 or later,
> you can use
>
> mls qos trust cos pass-through dscp
> trust cos and do not change dscp value via cos-dscp map
> (assuming no dscp-dscp mutation map set)
> or
> mls qos trust dscp pass-through cos
> (trus dscp and do not change cos via dscp-cos map.)
>
> Ozgur
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
William Chen
> Sent: Sunday, December 21, 2003 9:17 AM
> To: ccielab@groupstudy.com
> Subject: Catalyst 3550 QoS
>
>
> Dear all,
>
> The Catalyst 3550's Classification will result an internal DSCP. Will
> this DSCP be actually marked in the packets or just for internal use only?
> How about the COS value after DSCP-to-COS map applied, will it be internal
> use only to select the output queue or will actually marked in the tagged
> frames. I think DocCD don't clearly states it.
>
> Best Regards,
> William Chen
>
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