RE: [K12OSN] PXE boot problems...........resolved

["james" <james mail nbsd org>]

I remember the rules, 5-4-3 and lengths/distances for Cat5 and the rest,
but I've never actually run into the issue prior.  Interesting :)

- James

> -----Original Message-----
> From: Julius Szelagiewicz [mailto:julius turtle com] 
> Sent: Tuesday, March 05, 2002 10:51 PM
> To: james
> Cc: 'Bert Rolston'; 'K12OSN'
> Subject: RE: [K12OSN] PXE boot problems...........resolved
> 
> 
> James,
> 	oh yes, they sure do. some don't pass dhcp, some do but 
> the time lag is too much (remember: "repeat"). sometimes you 
> just get a dad less than what you pay for and there really is 
> a document describing cat 5, and another for cat 3, 
> requirements. guess what, the levels of cascading can not go 
> on forever, actually, without cheating (big bucks), can't go 
> beyond 5, and with crappy hubs, beyound 4. i've seen 3 level 
> cascade break bootp. go figure. it is still electricity. julius
> 
> On Tue, 5 Mar 2002, james wrote:
> 
> > OT:  I don't see why an extra hub (You mean, a regular 10 or 100 or 
> > 10/100 Megabit hub?  Not a switch or router?) would interfere.
> >
> > Hubs are dumb, they just boost signals and repeat 
> everything told to 
> > them.  They shouldn't interfere with any network operations.
> >
> > - James
> >
> > > -----Original Message-----
> > > From: k12osn-admin redhat com [mailto:k12osn-admin redhat com] On 
> > > Behalf Of Bert Rolston
> > > Sent: Tuesday, March 05, 2002 7:28 PM
> > > To: 'K12OSN'
> > > Subject: [K12OSN] PXE boot problems...........resolved
> > >
> > >
> > > Hi folks,
> > >
> > > I figured out the PXE booting problem.
> > >
> > > It was a combination of network infrastructure and bootrom 
> > > alternatives.
> > >
> > > I had one hub too many in the chain (this is in my 
> workshop) and PXE 
> > > selection was using INT19.
> > >
> > > By removing the HUB, and setting the bootrom to INT18, everything 
> > > works well. The old P75 sure rockets along now!
> > >
> > > Well, now it's on to finalising the Win4Lin setup.
> > >
> > > Have fun out there in K12 land!
> > >
> > > Cheers,
> > > Bert
> > >
> > >
> > >
> > >
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