Jim,
What is attached to the switchport? We saw this happen with
our Unity
server one time. I think we mistakenly turned on auto qos
and had trust
cisco phone on the port. The fact that it wasn't a phone
was causing
the COS not to be trusted. This in turn would remove EF
setting when
exiting the switch. The fix was to put the command mls qos
trust dscp
on the port.
Carlos
-----Original Message-----
From: cisco-voip-bounces puck.nether.net
[mailto:cisco-voip-bouncespuck.nether.net] On Behalf
Of Jim McBurnett
Sent: Sunday, July 30, 2006 12:53 AM
To: Ted Nugent; cisco-voippuck.nether.net
Subject: Re: [cisco-voip] 3560 QOS bug?
The thing that really gets me, is it comes in to the 3560 as
EF
It leaves it and comes into the 4500 as DCSP 0
I could see a COS trust map issue putting it to something
else.. But
this?
J
-----Original Message-----
From: Ted Nugent [mailto:tednugent69yahoo.com]
Sent: Saturday, July 29, 2006 11:44 PM
To: Jim McBurnett; cisco-voippuck.nether.net
Subject: Re: [cisco-voip] 3560 QOS bug?
Also check your trunk to the 4500 and make sure your
trusting DSCP...
sorry to state the obvious.
--- Jim McBurnett <jimtgasolutions.com> wrote:
>
>
>
> Has anyone seen a bug where a 3560 with a QOS config
will remove the
> EF DSCP tagging on a packet as it traverses the switch?
> I have a packet capture where a packet came in marked
on a Fast E port
> and when it comes into the upstream 4500 it is not
marked EF
> anymore...
>
> Thoughts?
>
> Thanks,
> Jim
>
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> cisco-voippuck.nether.net
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