Re: OT:QOS understanding

What about port trust states on the upstream core switch?

On Thu, Jun 16, 2011 at 5:21 PM, Dennis Worth <dennis.worth_at_gmail.com>wrote:

> Joe,
> I am running qos on the 3750x, I have tried trusts for dscp, ip prec and
> even tried auto trust for phone. I look at maps, but nothing states TOS to
> dscp mapping.
> On Jun 16, 2011 1:40 PM, "Joe Astorino" <joeastorino1982_at_gmail.com> wrote:
> > Do you have "mls qos" or any other qos configuration on the 3750x switch?
> > On your core switch, do you trust markings?
> >
> > On Thu, Jun 16, 2011 at 4:34 PM, Dennis Worth <dennis.worth_at_gmail.com
> >wrote:
> >
> >> Hi Group,
> >>
> >> I was working on an access-layer routed approach config, and trying to
> >> understand the marking of QOS TOS from the switchport level.
> >>
> >> I have an IP phone on a 3750X switch that then gets routed to a a core
> >> switch. What I am not seeing is a marking of the voice traffic from say
> >> vlan
> >> 20. I created an ACL on the routed interface at core switch to match IP
> >> PREC, DSCP values, but nothing seems to match. According to my config on
> >> the
> >> Voip phone it should be TOS = A0 or IP PPREC 5 or what I thought was EF.
> >>
> >> I am guessing that the TOS byte is just not being automatically mapped
> to
> >> DSCP, but not real sure.
> >>
> >> Thanks for any help guiding me through this.
> >>
> >> --
> >> Dennis Worth
> >>
> >> "Of all men's miseries the bitterest it this: to know so much and to
> have
> >> control over nothing."
> >> --Herodotus
> >>
> >>
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> >>
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> >>
> >>
> >>
> >>
> >>
> >
> >
> > --
> > Regards,
> >
> > Joe Astorino
> > CCIE #24347
> > Blog: http://astorinonetworks.com
> >
> > "He not busy being born is busy dying" - Dylan
>

-- 
Regards,
Joe Astorino
CCIE #24347
Blog: http://astorinonetworks.com
"He not busy being born is busy dying" - Dylan
Blogs and organic groups at http://www.ccie.net