The differences between auto and desirable is that desireable trys to become
a trunk, auto only is poked at with DTP frames requesting it act as a trunk.
With auto being the default for Fast/Gig Ethernet, you won't have trunks
coming up in places that you don't expect. The other end will have to be
set in on or desirable to actively convert the link to a trunk.
""Pierre-Alex GUANEL"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi All,
>
> I have been struggling all morning trying to understand the difference
> between the "auto" mode and "desirable" mode. The only difference I have
> found is that :
>
> Auto+Auto = no trunking, where as Desirable + Desirable = trunking
>
> Apart from that the Auto and Desirable behave the same way. So when
> would you use "auto" and when would you use "desirable"?
>
> I am sure that if those modes exist, it is because there is some
> practical use for them in a production environment .
>
>
>
>
>
> Pierre-Alex
>
>
>
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