Re: DTP - Interpreting the Question

Hi Sud,

As SW1 should not negotiate, you should configure dot1q / trunk statically:

!
int fax/x
switchport trunk encap dot1q
switchport mode trunk
!

On SW2, it could be either desirable or auto, since SW1 is statically
configured to trunk.

!
int fax/x
switchport mode dynamic [auto | desirable]
!

In order to check this config, issue a "sh int trunk" on both sides. On
switch 1, it should come up with "802.1q" while on switch 2, it should come
up with "n-802.1q", "n" meaning that the trunking protocol was negotiated.

HTH.

Rgrds,

Leonardo Hideki

On Mon, May 16, 2011 at 4:28 AM, Sud Mu <mitsuie2_at_gmail.com> wrote:

> Hi All,
>
> I've got a problem in interpreting this DTP question
>
> If there was a question where SW1 and SW2 are directly connected.
>
> Question:
> =======
> Link between SW1 and SW2 should be a 802.1q trunk. SW1's port should be
> configured statically to have 802.1q trunking. SW2 should negotiate 802.1q
> as trunking protocol to SW1. SW1 should not negotiate 802.1q to SW2.
>
> Where should I put "switchport mode dynamic desirable" ? on SW1 or SW2 ?
>
> Although simple please give you experts idea
>
> Thanks,
> Sud
>
>
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Received on Thu May 19 2011 - 06:24:37 ART