Hi Flem,
I'm trying to find it.
I had a case logged regarding why there was no ISL of the new 2948G
switches we bought and the answer was that they now only support dot1q
trunking.
The link the case I opened is now no longer visible but I found the
following:
Features of 2948G, you'll notice only 802.1Q VLAN's and VTP Supported.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2948/inst_gd/01intro.htm
Hmmm.. I can't find any references on any statements just yet, but from
the discussion I had with the TAC during the case they said that they
were moving away from proprietory protocols where an equivalent was
supported as in the case of ISL and 802.1Q
Like most things I think we'll see ISL still supported in most future
releases but it's interesting that the 2948G definately has no ISL
support at all.
Darren
Flem wrote:
> Hi Darren ,
>
> Do you have a reference on cco stating that cisco will
> no longer support ISL in the future ?
>
> thanks,
> flem
>
> --- Darren Ward <[EMAIL PROTECTED]> wrote:
> > Well the advantage is that I saw was that some
> > switching modules are supported
> > in 5.x that aren't supported in 4.x
> >
> > I think it was the 36 port 10/100 switching modules
> > from memory.
> >
> > I think there might have also been something with
> > NetFlow enhancements in 5.x
> > over 4.x?
> >
> > Both do support ISL but remember Cisco themselves
> > have stated that they will not
> > support ISL in the future and that VLAN's should use
> > dot1q from now on.
> >
> > In fact there are some 28xx and 29xx switches that
> > now cannot support ISL!
> > I know the 2824G with new software cannot for sure!
> >
> > Darren
> >
> > Mark Holloway wrote:
> >
> > > I know the Catalyst 5000 Supervisor 1 engine only
> > supports LAN Switching IOS
> > > 4.x and lower due to the 16MB memory limit. Some
> > Sup 2 modules only support
> > > 4.x, some support 5.x, but are there really any
> > advantages to running IOS
> > > 5.x versus 4.x? If not, are there any advantages
> > of 4.x on a Sup 2 versus a
> > > Sup 1? Do they all support ISL?
> > >
> > > Thanks,
> > > Mark
> > >
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