From: abderrahim sadki (a_sadki1@hotmail.com)
Date: Sat Dec 20 2008 - 10:42:24 ARST
hi,
Thanks for you answer.
Regarding the DSCP to cos table , when is it used?
I understand on the 3550, it is used only before the packets reaches the
egress queue( i know there isnt any ingress queue on the 3550) to do the Cos
to queue mapping, and this happens even if the switch is set as mls qos cos x
on the incoming port.
On the 3560, the DSCP to cos table can be used before the ingress queue.
Am i right?
Thanks,
Abderrahim
PS: sorry if im a pain in the neck ;)
> Date: Fri, 19 Dec 2008 09:05:54 -0800
> From: petr@internetworkexpert.com
> To: asequeira@internetworkexpert.com
> Subject: Re: catalyst 3550 mls qos cos x and policy-map
> CC: ccielab@groupstudy.com
>
> Hi everybody,
>
> It's been discussed on the list a few times. The last applied configuration
> erases the previously applied one, as the "interface-level" and "policy-map
> level" settings are mutually exclusive.
>
> Rack1SW3(config-if)#do sh run int fa 0/5
> interface FastEthernet0/5
> switchport access vlan 45
> switchport mode access
> mls qos cos 5
> mls qos cos override
> end
> Rack1SW3(config-if)#service-policy input MARK
> Rack1SW3(config-if)#do sh run int fa 0/5
> !
> interface FastEthernet0/5
> switchport access vlan 45
> switchport mode access
> service-policy input MARK
> mls qos cos 5
> end
> Rack1SW3(config-if)#mls qos cos override
> Rack1SW3(config-if)#do sh run int fa 0/5
> interface FastEthernet0/5
> switchport access vlan 45
> switchport mode access
> mls qos cos 5
> mls qos cos override
>
> Note that "mls qos cos 5" remains intact, as it defines the default CoS
> value used by the policy-map as well. When you apply the service-policy it
> removes any interface-level "marking" settings.
>
> --
> Petr Lapukhov, CCIE #16379 (R&S/Security/SP/Voice)
> petr@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
> 2008/12/19 Anthony Sequeira <asequeira@internetworkexpert.com>
>
> > If someone does actually have time to lab it up and post an answer in
this
> > thread - it would be swell.
> >
> > Anthony J. Sequeira, CCIE #15626, CCSI #23251
> > Senior CCIE Instructor
> >
> > asequeira@internetworkexpert.com
> >
> > Internetwork Expert, Inc.
> > http://www.InternetworkExpert.com <http://www.internetworkexpert.com/>
> > Toll Free: 877-224-8987
> > Outside US: 775-826-4344
> >
> >
> > On Dec 18, 2008, at 11:51 PM, abderrahim sadki wrote:
> >
> > lol....
> >>
> >> im good thanks Narbik!!i hope things are good for you too!
> >>
> >> I got ur stuff thank you I really appreciate it...just what I was
looking
> >> for
> >> !
> >>
> >> I look forward to attend ur bootcamp again!
> >>
> >> Thanks
> >>
> >> Abderrahim
> >> Date: Thu, 18 Dec 2008 17:03:56 -0800
> >> From: narbikk@gmail.com
> >> To: a_sadki1@hotmail.com
> >> Subject: Re: catalyst 3550 mls qos cos x and policy-map
> >> CC: ccielab@groupstudy.com
> >>
> >> What he means is........hahahahha
> >>
> >> How are you mate????
> >>
> >> The best approach is to lab it up and test it, we could all be wrong,
the
> >> process of thinking as to how to setup a scenario and test it will teach
> >> you
> >> what no one can.
> >>
> >> I will be sending you bunch of new stuff, do those labs and hope to see
> >> you in
> >> Feb.
> >>
> >>
> >> On Thu, Dec 18, 2008 at 4:27 PM, abderrahim sadki <a_sadki1@hotmail.com>
> >> wrote:
> >>
> >> Hi all,
> >>
> >> On the C3550 if on the interface we put the
> >>
> >> mls qos cos 5 and mls qos cos override
> >>
> >>
> >> AND a policy-map with set cos 2 for example.
> >>
> >> which one will the take effect?
> >>
> >> The action on the policy-map (input) or the interface command?
> >>
> >> The configuration guide says the last one configured is applied and
> >> elsewhere
> >>
> >> it says the policy-map supersedes the interface command.
> >>
> >> Which one is correct?
> >>
> >> Thanks,
> >> Abderrahim
> >>
> >> _________________________________________________________________
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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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