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Date: Sat, 1 Jun 2002 11:45:39 +0200 (CEST)
From: =?iso-8859-1?q?Johan=20Petersson?= <kjep@yahoo.com>
Subject: Duplex problem with Etherlink XL (3c900B) and xl driver.
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Hi everyone,

I'm having problems getting FreeBSD to use full duplex with my
3com Etherlink XL card. The NIC is connected to a 10/100 switch
and during power up and boot the full duplex LED on the switch
is on, until the probing of the NIC (using xl driver). Then the
LED goes out indicating half duplex mode. When I boot DOS the
LED stays on all the time.

Trying to force full duplex with ifconfig does not seem to work.
There is no error message, but the LED remains off and instead
network thruput falls to about 30 kbit/s... I have tried both
auto (NWAY) and manual settings of the card using a 3com DOS
utility, but no change.

Relevant (?) lines from dmesg (boot -v):
xl0: <3Com 3c900B-COMBO Etherlink XL> port 0x4000-0x407f mem
0x60000000-0x600000
7f irq 10 at device 15.0 on pci0
xl0: Ethernet address: 00:50:04:22:a1:a2
xl0: media options word: 38
xl0: guessing COMBO (AUI/BNC/TP)
xl0: found 10baseT
xl0: found AUI
xl0: found BNC
xl0: selecting 10baseT transceiver, half duplex

"ifconfig xl0" gives me:
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.254 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:50:04:22:a1:a2
        media: Ethernet 10baseT/UTP (10baseT/UTP <half-duplex>)

Finally, "uname -a":
FreeBSD hawk.sigtuna.lan 4.4-RELEASE FreeBSD 4.4-RELEASE #4: Fri May 31
13:01:43 CEST 2002     johan@falcon.sigtuna.lan:/usr/src/sys/compile/HAWK  i386

The computer is an old IBM PC Pentium 133.

Does anyone have any ideas how to enable full duplex under FreeBSD?

Regards
Johan Petersson


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