From: The Great Ryan (pv.ryan@gmail.com)
Date: Sat Oct 15 2005 - 00:36:54 GMT-3
hi,
in the interface command
int f0/1
mls qos cos 2
Which kind of incoming packet will be set to cos 2 ?
If the incoming packet is already set to cos 3, will it be changed to cos 2?
Thanks !
Ryan
2005/10/14, Dave Temkin <dave@ordinaryworld.com>:
> Right but that's not changing the IP phone CoS... That's relying on the IP
> phone to do it. How would I do it myself?
>
> Thanks,
> -Dave
>
> On Fri, 14 Oct 2005, Ed Lui wrote:
>
> > mls qos
> > !
> > (interface level)
> > mls qos trust device cisco-phone
> > switchport priority extend cos 3
> >
> >
> > On 10/13/05, Dave Temkin <dave@ordinaryworld.com> wrote:
> > > So, let's say I want to se the CoS of the voice traffic to 5, and the CoS
> > > of the data traffic to 3. What are the final commands to do this?
> > >
> > > Thanks,
> > > -Dave
> > >
> > >
> > > On Thu, 13 Oct 2005, Chris Lewis wrote:
> > >
> > > > Hello Stefan,
> > > >
> > > > 1. Mls qos cos cos-vlaue effectively sets an internal DSCP value for untagged frames, it is really setting an input CoS value, but that is mapped to the internal DSCP value. To have tagged and untagged frames set to a given value, use Mls qos cos override. So short answer, the config in Q 1 looks right.
> > > >
> > > >
> > > >
> > > > For 2 and 3, yes they are crazy :) I have not tried them, so I think the only way you'll get your answer is to configure it on a switch and test it out, not easy, but I think the only way you'll get your answer.
> > > >
> > > >
> > > >
> > > > Chris
> > > >
> > > >
> > > > Stefan Grey <examplebrain@hotmail.com> wrote:
> > > > Thank you very much Chris for the link, those explanation is really
> > > > invaluable. I think this is one of those things which someone can't learn
> > > > just from books and documetnation but from lists like this.
> > > >
> > > > Well, I wanted to ask another question to this topic as well
> > > >
> > > > 1. if we wan rewrite the cos value of traffic generated both by Phone and
> > > > the trafic behind the 7960 phone would such configuration be just enough??:
> > > >
> > > > mls qos cos 1
> > > > mls qos cos override
> > > >
> > > > to rewrite all the traffic. (as I understand Yes but I just need the
> > > > confirmation I am thinking correctly)
> > > >
> > > > 2. When we configure:
> > > > switchport priority extend cos 2
> > > > mls qos cos 1
> > > > mls qos cos override
> > > >
> > > > Would this still mean the all traffic will be rewritten to cos 1. And mls
> > > > qoc cos command has biggest priority than switchport priority extend cos 2
> > > > command for traffic behind the phone??
> > > >
> > > > 3. And to make the situation just crazy and far from reality... Could be
> > > > trust the cos value of the traffic behind the phone but ovveride the traffic
> > > > from the phone itself.
> > > >
> > > >
> > > > Thanks.
> > > >
> > > >
> > > >
> > > >
> > > > >From: Chris Lewis
> > > > >To: Stefan Grey , ccielab@groupstudy.com
> > > > >Subject: Re: Voice VLANS Date: Thu, 13 Oct 2005 09:31:31 -0700 (PDT)
> > > > >
> > > > >Google of the archives is wonderful for this sort of thing :)
> > > > >
> > > > >http://shop.groupstudy.com/archives/ccielab/200506/msg01535.html
> > > > >
> > > > >Stefan Grey wrote:
> > > > >Hello,
> > > > >
> > > > >While learning this I read that when a phone is connecte to the 3550 switch
> > > > >it will automatically form an 802.1q trunk to the phone.
> > > > >
> > > > >interface fa0/1
> > > > >switchport voice vlan 2
> > > > >sw acc vlan 3
> > > > >
> > > > >Such a question appeared in my head... Would it be then ok to configure in
> > > > >such situation statical trunk configuration?? ... like
> > > > >
> > > > >int fa0/1
> > > > >sw trunk enc dot1q
> > > > >sw mode trunk
> > > > >
> > > > >If yes is that used in some particular situations in the real networks (or
> > > > >it is always automatically detected).
> > > > >And if yes wouldn't be it just mixing of commands of different switchport
> > > > >modes??
> > > > >
> > > > >sw trunk ..commands are the commands of the trunk mode of the port and sw
> > > > >acc command would be the access command of the switch.
> > > > >
> > > > >Thanks,
> > > > >
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