From: Scott Hoover (dizzy74_98@yahoo.com)
Date: Wed Nov 13 2002 - 11:03:10 GMT-3
Cisco (been discussed at Networkers for the last 2
years) has made no secret of the fact that they are
going entirely away from ISL. That's probably the
reason why you are only seeing dot1q for the 10G
interfaces. I would simply tell your customer that
Cisco is going entirely over to dot1q in the near
future. Also, for troubleshooting purposes it is
easier to know that every trunk is using the same
encap.. If all else fails, give the customer what he
wants---he is paying your check.
HTH,
Scott
CCIE #9340
--- Hedi Abdelkafi <Hedi.Abdelk@simac.lu> wrote:
> > Hi,
> >
> > I have to setup a new network with Cat6k (with 10
> Ge interface) and Cat3550.
> > ISL encapsulation is not supported on 10 GE
> interface so we have to use Dot1Q encapsualtion on
> that kind of link.
> >
> > The customer wants to use both encapsulation mode
> (ISL on Gigabit and Dot1q on 10 GE).
> > I prefer to use only Dot1Q accross the whole
> network.
> >
> > What argument can I give in order so setup this
> new network with only one encapsulation method ?
> > Does someone have a bad experience when mixing
> both ?
> >
> > PS : I have already said to the customer that some
> device (Cat2950 if I'm wrong) support only Dot1q. He
> told me that the only device that will be used are
> cat 3550 !
> >
> > Any idea or documentation is welcome !
> >
> > Thanks for your help.
> >
> > Bye
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