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i386/857: DEC Tulip full-duplex
>Synopsis: DEC Tulip full-fuplex not working
>Arrival-Date: Sun Jun 6 12:30:03 MDT 1999
>Originator: Martin Portmann
>Release: OpenBSD 2.4/2.5
System : OpenBSD 2.5 / OpenBSD 2.4
Machine : i386
The [de] network driver has some problems with full-duplex
mode. At least with the network card I was using:
A recent Kingston KNE100 with a 21143 chip fabed by Intel.
Between Firewall and internal Router (both OpenBSD boxes)
I use a crossed patch cable. The two machines are
able to communicate with each other but performance
is very slow (limited to 100kb/s with ftp). With netstat
every output packet is also marked as error (on both
Thinks worked fine (up to 2500kb/s) with a hub in between.
It did not help to specify media options with ifconfig
(seemed to be ignored).
I tested everything with OpenBSD 2.4 and 2.5.
Connect two computers with a crossed patch cable. Test
troughput with ftp.
I changed network cards and everything works fine now (Intel