From: ashwin kohli (ashwin_kohli1@yahoo.com)
Date: Sun Aug 14 2005 - 14:46:40 GMT-3
J,
If you want to change the C0S values, then your config
is correct.
If you want to trust the phone, then you can use this.
If the phone is a Cisco phone, then there is a
different command you can use - mls qos trust
cisco-phone (Check CCO for syntax).
I am not too sure about the flow-control as I have not
experienced that before, but I will research that and
let you know shortly.
I hope that helps.
Thanks
Ashwin Kohli
CCIE#8877 (R&S, Security)
http://www.ccbootcamp.com/nliipv6labguide.asp
http://www.ccbootcamp.com/nlicciecore.asp
--- Jvrg Buesink <buesink@fma.nl> wrote:
> Hi there,
>
> Thank you for the quick response.
> So if I want to change the COS value coming in on a
> port i have to use :
>
> mls qos:
> inf f0/15
> mls qos cos overrid
> mls qos cos 1
>
> If I trust the incoming COS received on that port, I
> have to do
>
> mls qos:
> inf f0/15
> mls qos trust cos
>
> The switchport command does the same but only for ip
> phones ??
>
> Do you need to disable flow-control on that port? If
> I enable mls qos , the switch says "
> Switch(config)#mls qos
> > QoS: ensure flow-control on all interfaces are OFF
> > for proper operation.
> >
>
> Regards and thanks
>
> Jorg.
>
>
>
>
>
> ________________________________
>
> Van: ashwin kohli [mailto:ashwin_kohli1@yahoo.com]
> Verzonden: za 8/13/2005 16:23
> Aan: Jvrg Buesink; ccielab@groupstudy.com
> Onderwerp: Re: MLS qos cos override / switchport
> priority
>
>
>
> J,
>
> EXAMPLE 1
> ---------
> mls qos cos override - By default, CoS override is
> disabled. This command overrides all incoming
> packet's
> CoS value to the default which is 0.
>
> Even if a port was previously set to trust CoS
> (using
> the mls qos trust cos command), the mls qos cos
> override command superceeds any previously
> configured
> trust state, and all the incoming CoS values are
> assigned the default CoS value of 0.
>
> So, I am not too sure why you would type both the
> commands on the same port at the same time.
>
> EXAMPLE 2
> ---------
> switchport priority extend cos 1 - You can connect a
> PC or other data device to a Cisco 7960 IP Phone
> port.
> The PC can generate packets with an assigned CoS
> value. You can configure the switch to override the
> priority of frames arriving on the IP phone port
> from
> connected devices.
>
> I hope the above helped. Let me know if you have any
> further questions.
>
> Thanks
> Ashwin Kohli
> CCIE#8877 (R&S, Security)
> http://www.ccbootcamp.com/nliipv6labguide.asp
> http://www.ccbootcamp.com/nlicciecore.asp
>
> --- buesink@fma.nl wrote:
>
> > Hi guys,
> >
> >
> > Question1:
> >
> > example 1
> > ==========
> > mls qos
> > int f0/1
> > mls qos cos override
> > mls qos trust cos
> >
> > example 2
> > ==========
> > mls qos
> > int f0/1
> > switchport priority extend cos 1
> >
> > what is the difference, could somebody explain me
> > briefly When you use the switchport command and
> when
> > you use the mls qos cos command? Whats the
> > difference?
> >
> >
> > Question2:
> > When I enable "mls qos" on a switch it says:
> >
> > Switch(config)#mls qos
> > QoS: ensure flow-control on all interfaces are OFF
> > for proper operation.
> >
> > Does this mean I have to dlso on example 1 or
> > example2 the command "no flow-control receive"
> >
> > Regards and thanks in advance
> >
> > J.
> >
> >
>
This archive was generated by hypermail 2.1.4 : Sun Sep 04 2005 - 17:01:19 GMT-3