From freebsd-hackers  Wed Jul 31 21:20:38 1996
From: Nate Williams <nate () mt ! sri ! com>
Date: Wed, 31 Jul 1996 21:20:38 +0000
To: freebsd-hackers
Subject: Re: tcp/ip over lp0
X-MARC-Message: https://marc.info/?l=freebsd-hackers&m=94346786426587

> are there any parameters to play with for getting tcp/ip over the parallel
> port working

None that I'm aware of.

> 4308 packets transmitted, 617 packets received, 85% packet loss

That anything gets through implies that at least the software is setup
correctly, so the remaining factor is hardware.

> time ago - but now some parts of them have changed - and the cable was
> different) ? - or can it be that the cable is too long (it's really long -
> about 5 meters or so) ?

That's a *really* long cable.  Also, *MAKE SURE* that neither machine
has another device using it's interrupt, and that there is a driver for
all hardware that generate interrupts.

If you happen to use the commonly-used IRQ 7 for the parallel port and
something other than the parallel port either generates interrupts on 7
or one another unregistered port you'll have lots of problems.

Make sure both machines have don't have IRQ conflicts and shorten the
cable.



Nate