if its non-pnp (eg dlink 220) you'll have to use the manufacturers setup 
software. in the case of the dlink de220 you can fit this on a windows boot 
disk so its a simple case of booting into it from floppy.

GREG

> How can I detect my ne device media options?
> 
> I see from the following that it is probably configured via card jumpers
> (or maybe some vendor software).
> 
> $ ifconfig -m ne0
> ne0: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         address: 00:40:05:6e:04:2a
>         media: Ethernet manual
>         supported Ethernet media:
>                 media manual
>         inet 192.168.0.2 netmask 0xffffff00 broadcast 192.168.0.255
>         inet6 fe80::240:5ff:fe6e:42a%ne0 prefixlen 64 scopeid 0x1
> 
> 
> I'm trying to figure out if this ne0 is configured as half- or
> full-duplex. I assume it is full-duplex, because when sending to other
> systems with half-duplex (no switch) it is two to three times slower than
> when receiving. (Sometimes it justs stalls.)
> 
> (Also, it seems like "netstat -i" always shows zero collisions but my
> other systems show collisions on same network.)
> 
>    Jeremy C. Reed
>    http://www.reedmedia.net/
>