From: Phillip.McCollum@ins.com
Date: Tue Dec 04 2007 - 20:56:57 ART
Straight from the DocCD:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3550/software/relea
se/12.2_25_see/configuration/guide/swqos.html#wp1044737
You cannot use the service-policy interface configuration command to
attach policy maps that contain these elements to an egress interface:
*set or trust policy-map class configuration commands. Instead, you can
use the police policy-map class configuration command to mark down
(reduce) the DSCP value at the egress interface.
*Access control list (ACL) classification.
*Per-port per-VLAN classification.
The answer to your problem is the last bullet point. And as someone else
stated:
The only match criterion in a policy map that can be attached to an
egress interface is the match ip dscp dscp-list class-map configuration
command.
HTH,
Phillip
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Fawaz Habeeb
Sent: Friday, November 30, 2007 9:21 PM
To: Bob Sinclair
Cc: Mohammad Tawfiq Dawod; Cisco certification
Subject: Re: match vlan
Hi all,
Nice to c that we are all on the same page,
On of my gud friend, Nabik has provided a solution for this issue:
Turn on mls qos, set the port to trust cos and have a default cos of
whatever number you want. Then manipulate the cos-ipprec map or
cos-dscp
map to change to the value you desire.
Anything coming in any ports on that vlan will be changed.
i hope this helps.
Please update if there is any comments on this...
Lets have hot discussion on this topic......meal for today ;)
Thanking you,
Rgds,
faw
On Nov 30, 2007 9:43 PM, Bob Sinclair <bob@bobsinclair.net> wrote:
> Mohammad Tawfiq Dawod wrote:
> > Any idea what is wrong with using "match vlan"
> >
> >
> >
>
> Seems to me your question relates to fundamental switch design issues.
> Switches trade options for speed by implementing QoS in hardware.
Most
> Catalysts do not allow outbound policy-maps at all. QoS decisions
are
> made centrally as the frame passes through the switch. Two good
sources
> for study would include:
>
> Cisco Catalyst Qos by Flannagan, Froom and Turec
>
> or
>
> End-to-End QoS Network Design by Szigeti and Hattingh
>
> You might also check out Cisco LAN Switching Fundamentals by Barnes
and
> Sakandar. It has some very good sections on Catalyst architecture.
>
> I am sure one of the CAT gurus on the list can provide more detail.
>
>
> --
>
>
> Bob Sinclair CCIE 10427 CCSI 30427
> www.netmasterclass.net
>
>
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