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List:       freebsd-hackers
Subject:    tcp/ip over lp0
From:       Thomas Graichen <graichen () axp5 ! physik ! fu-berlin ! de>
Date:       1996-07-31 19:30:14
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are there any parameters to play with for getting tcp/ip over the parallel
port working - i tried it with two FreeBSD machines - one 2.1.0 and one
-current but i only get very few packets through the line - here's what i get
from ping -f and netstat:

2874 packets transmitted, 241 packets received, 91% packet loss
round-trip min/avg/max = 9.805/11.167/17.566 ms
root@mordillo:~> netstat -ain
Name  Mtu   Network     Address            Ipkts Ierrs    Opkts Oerrs  Coll
ed0   1500  <Link>00.00.c0.19.fa.ae          566     0      640     0     0
ed0   1500  10          10.0.0.1             566     0      640     0     0
lp0   1500  <Link>                          1019     1     1165  2490     0
lp0   1500  10          10.0.0.3            1019     1     1165  2490     0

the other side:

4308 packets transmitted, 617 packets received, 85% packet loss
round-trip min/avg/max = 11.202/15.700/30.719 ms
root@prospero:~> netstat -ain
Name  Mtu   Network       Address            Ipkts Ierrs    Opkts Oerrs  Coll
ed0   1500  <Link>      00.80.ad.13.bc.7a      638     0      566     0     0
ed0   1500  10/24         10.0.0.2             638     0      566     0     0
lp0   1500  <Link>                            1165     4     1019  3846     0
lp0   1500  10/24         10.0.0.4            1165     4     1019  3846     0

there do these errors come from ? - is there any timing i may change to get it
working or is it the hardware (i had it working between the two machines some
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) ?

does anyone have any ideas ? nate ? - thanks in advance

t

-- 
  thomas graichen    graichen@mail.physik.fu-berlin.de    graichen@FreeBSD.org

  perfection is reached, not when there is no longer anything to add, but when
      there is no longer anything to take away    antoine de saint-exupery

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