From: Larry Roberts (larryr@netbeam.net)
Date: Tue Feb 18 2003 - 22:15:08 GMT-3
Hello group,
The default is for all interfaces on the Catalyst 3550 is "switchport
dynamic desirable". In other words a switch will try to automatically set
its' port to work with whatever device it is connected to - i.e. 802.1q
trunk, ISL trunk, etc. If you are connecting 2 3550s together you must
hardcode one of them.
HTH,
Larry Roberts
CCIE #7886 (R&S / Security)
----- Original Message -----
From: "Jerry" <phase90@comcast.net>
To: "FRANCISCO JAVIER COPETE AGUADO" <F.COPETE.AGUADO@valenciamail.net>;
"Group Study CCIE LAB" <ccielab@groupstudy.com>
Sent: Tuesday, February 18, 2003 1:18 PM
Subject: Re: Default trunk encapsulation
> I vote ISL because #1) Cisco proprietary for Cisco to Cisco trunk
>
> and #2) it can form trunk with lower-end Cisco switches that don't
> understand dot1q
>
>
> Jerry
> ----- Original Message -----
> From: FRANCISCO JAVIER COPETE AGUADO <F.COPETE.AGUADO@valenciamail.net>
> To: Group Study CCIE LAB <ccielab@groupstudy.com>
> Sent: Tuesday, February 18, 2003 12:14 PM
> Subject: Default trunk encapsulation
>
>
> > Hi group,
> >
> > if you have two Cat 3550 connect with a crossover cable, ports in mode
> > desirable and encapsulation negotiate. What's the default
> > encapsulation? ISL or 802.1Q?
> >
> > If the default encapsulation is ISL, is possible to force encapsulation
> > 802.1Q without enable 802.1Q?
> >
> > Thank you in advance.
> >
> > Regards.
> >
> >
> > Copete
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