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 <fabre.gilles_at_voila.fr> 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
>> >
>> >
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>>
>>
>>
>
>
>
>
> Quand Jean-Luc Delarue parlait de son grand amourb& C lire surB Voila.fr
> ___________________________________________________________
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Received on Thu Aug 30 2012 - 10:52:21 ART