Darren ,
SupII has repeaters between the three busses .
SupIII has a bridge between the three busses , the
bridging functionality is implemented using the
Phoenix ASIC .
Both supII and supIII has a connection to all busses .
Also the 2926G is based on supIII .
flem
--- Darren Ward <[EMAIL PROTECTED]> wrote:
> Ok what I found is:
>
>
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/cnfg_nts/supvr/
>
> Which can be summarised as:
>
> Hardware:
> Supervisor I is engine for 2900
> Supervisor II is engine for 2926
> Any Supervisor can be used in a 500x series
> switch.
> Only Supervisor II and Supervisor III can be
> using the 550x series switches.
>
> Features:
> Supervisor II and Supervisor III support
> redundant supervisor engine option
> available in the 5500 and 5505.
> Supervisor III boots differently from other
> Supervisors - has both a ROM
> monitor and supervisor engine software
>
> Questioned:
> Supervisor III has Phoenix ASIC for using all
> three 1.2Gbps BUS's in a 550x
> to full 3.6Gbps.
>
> I say that last one is questioned because while a
> SupII can be used in a 550x I
> remember from studying for my CLSC Exam that only
> the SupIII had the Phoenix
> ASIC in it which made full use of the 3 bus's work.
>
> Please correct me and provide a reference if I'm
> wrong.
>
> Darren
>
> Albert wrote:
>
> > There is more than just memory difference between
> the two Sup.
> > The major difference is the backplane. The Sup 1
> can only access one
> > backplane (Cat 5000/5002). Sup 2 can access three
> backplane (Cat 550Xs).
> > For VLAN lab, Sup 1 with IOS 4.x is just fine.
> >
> > Albert
> >
> > ""Mark Holloway"" <[EMAIL PROTECTED]> wrote in message
> > 007701bfc92a$1354d7c0$[EMAIL PROTECTED]">news:007701bfc92a$1354d7c0$[EMAIL PROTECTED]...
> > > 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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