[plug] eth0 and ppp

[Len Bird]

russ wrote:

> Len Bird wrote:
> >
> > Check your Interupts first up. Many ethernet cards use IRQ3 by default
> > which is also the default for COM2.
> >
> > Cheers  Len Bird
>
> Having checked my boot up messages, that's exactly what's happening
> with the machine with the PCMCIA cards. Is there a way to configure
> the interrupt? Can I do it in the ifconfig section of the rc.config?
> Or should I try to configure the comport to IRQ 9?
>
> Linux PCMCIA Card Services 3.0.7
> <snip>
> eth0: 3Com 3c575 Boomerang CardBus at 0x100,  00:60:08:b6:f8:f3, IRQ 3
> <snip>
> ttyS01 at 0x02f8 (irq = 9) is a 16550A

The interrupt trap is usually overlooked by the gurus! I am really a novice
in Linux but suggest that you boot up in humble old dos for which there are
a number of programs like FINDIRQ, CHECKIT and others which will identify
which hardware item is using which Interrupt, and which are unused. INT 9 is
paired with INT 2 which therefore needs watching. Most Ethernet Cards these
days are software configured, but you may quite well have a Jumper-link IRQ
selection. It is usually easier to change the IRQ for the Ethernet Card than
for the Com Port. If you are stuck for one of these, I can help.

If you are now sure that IRQ conflict  is the problem, perhaps some of the
more knowledgeable of the PLUG subscribers can better advise you,

Best of luck,

Len Bird