Ah!
I wondered as to the references to the SupII but the statements contradicting
that in the pertaining documents for the SupIII.
Thanks very much for clearing that up for me as I was _very_ misunderstood and
don't mind being shown the right answer.
After all how else am I going to learn but to open my big mouth and get shot
down ;-)
Besides it saves anyone else asking the stupid questions if I ask them all!
Tell me if I'm right about the following:
The 3 x 1.2Gbps BUS's on a 550x feed different card slots in the chassis.
In the top couple of slots BUS A, B and C are available, in other slots only 1
or 2 of the 3 BUS's link to them.
By repeating the frame onto all BUS's allows the SupII to communicate with
every card slot from 2-12.
However really it is only communicating at real throughput of 1.2Gbps but
across all 3 BUS's simultaneously.
The SupIII bridges the BUS's and so can select the BUS that will reach it's
correct destination card and use only it.
Last stupid question:
So I remember that the frame is actually copied to all ports and I think it's
EARL that decides which port will transmit the frame and all others drop it.
This must mean however that the frame is only copied to every port on that BUS
and not every port in the chassis?
Darren
PS Thanks for the update on the engine in the 2926G compared to the 2926, I
wish Cisco could update their pages.
Flem wrote:
> 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
> > > >
> > > >
> > > > ___________________________________
> > > > UPDATED Posting Guidelines:
> > http://www.groupstudy.com/list/guide.html
> > > > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com
> > > > Report misconduct and Nondisclosure violations
> > to [EMAIL PROTECTED]
> > > > ---
> > >
> > > ___________________________________
> > > UPDATED Posting Guidelines:
> > http://www.groupstudy.com/list/guide.html
> > > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com
> > > Report misconduct and Nondisclosure violations to
> > [EMAIL PROTECTED]
> >
> > ___________________________________
> > UPDATED Posting Guidelines:
> > http://www.groupstudy.com/list/guide.html
> > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com
> > Report misconduct and Nondisclosure violations to
> [EMAIL PROTECTED]
>
> __________________________________________________
> Do You Yahoo!?
> Kick off your party with Yahoo! Invites.
> http://invites.yahoo.com/
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
