Re: DTP

well, actually I think I didn't use the right terms sorry
DTP is more a send/receive than a request/reply protocol

so I would say that
B configuring switchport mode access or switchport mode trunk stops the
processing of received dtp frames
B configuring switchport nonegociate stops sending DTP frames

do you agree ?

> Message du 30/08/12 C 16h55
> De : "Tim Cribbs Jr."
> A : "Gilles Fabre"
> Copie C : "Cisco certification"
> Objet : Re: DTP
>
> From the reference, it says the "switchport nonegotiate" command will
> not send DTP packets out the interface (vice stopping the reply).
> Would it do both? Or would it reply to requests but just not send?
>
> "When you enter the switchport nonegotiate command, DTP negotiation
> packets are not sent on the interface. The device does or does not
> trunk according to the mode parameter: access or trunk."
>
>
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12
.2_25_se/command/reference/cli3.html#wp1989134
>
> -Tim
>
> On Thu, Aug 30, 2012 at 9:55 AM, Gilles Fabre wrote:
> > Good explanation, thanks for reminding
> >
> > In my opinion, it is important to remember is that "switchport
nonegociate"
> > command doesn't stop the local device using DTP, but instead it stops the
> > reply to a DTP request (& so a remote device won't be able to negociate a
> > trunk if the local device is set to "nonegociate")
> >
> > If you want your local interface not to negociate, just force to
"switchport
> > mode access" or "switchport mode trunk"
> >
> > Hope this helps
> > Gilles.
> >
> >
> >
> >> Message du 30/08/12 C 10h11
> >> De : "Anthony Sequeira"
> >> A : "dmp7515" , ccielab_at_groupstudy.com
> >> Copie C :
> >> Objet : Re: DTP
> >>
> >> As I recall, according to Cisco, switchport nonegotiate is only
> >> appropriate in two configurations:
> >>
> >> switchport mode access
> >> and
> >> switchport mode trunk
> >>
> >> So if you try and get crazy and apply it to each link in your example B
-
> >> you should get a big batch of nothing as a result :-).
> >>
> >> Here is the documentation quote and link "This command is valid only
when
> >> the interface switchport mode is access or trunk (configured by using
the
> >> switchport mode access or the switchport mode trunk interface
> >> configuration command). This command returns an error if you attempt to
> >> execute it in dynamic (auto or desirable) mode."
> >>
> >>
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/
> >> 12.2_25_se/command/reference/cli3.html#wp1989134
> >>
> >> Anthony Sequeira, CCIE, CCSI, VCP
> >> http://www.stormwind.com
> >> Twitter: @compsolv
> >> Facebook: http://www.facebook.com/compsolv
> >>
> >>
> >>
> >> On 8/29/12 11:45 PM, "dmp7515" wrote:
> >>
> >> >Q. of the 4 scenarios, which configuration/s can you apply switchport
> >> >nonegatiate to disable DTP based on the supplied switchport mode
setting
> >> >
> >> >
> >> >
> >> >A. SW1/desirable -> Sw2/Auto
> >> >
> >> >B. SW1/Auto -> SW2/Trunk
> >> >
> >> >C. SW1/Trunk -> Sw2/Trunk
> >> >
> >> >d. SW1/Access -> SW2/Trunk
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >In my efforts to not overlook the most obvious, which I did, I thought
I
> >> >would post this to the group J
> >> >
> >> >
> >> >Blogs and organic groups at http://www.ccie.net
> >> >
> >> >_______________________________________________________________________
> >> >Subscription information may be found at:
> >> >http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> > Quand Jean-Luc Delarue parlait de son grand amourb& C lire surB Voila.fr
> > ___________________________________________________________
> > Quand Jean-Luc Delarue parlait de son grand amourb& C lire sur Voila.fr
> >
http://people.voila.fr/people/actu-stars/personnalites/quand-jean-luc-delarue
> > -parlait-d-anissa-kehl-son-grand-amour-people_8397.html
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>
Received on Thu Aug 30 2012 - 18:05:42 ART