Switching between half-duplex and full duplex
Javier Henderson
javier at kjsl.com
Sun Jun 3 17:44:03 UTC 2007
On Sun, 03 Jun 2007 11:46:15 -0400, r17fbsd at xxiii.com wrote:
> At 07:01 AM 6/3/2007, you wrote:
>> I have just installed FreeBSD and found that the nic em0 is set to
>> half-duplex only. Could anyone tell me how I can switch it to
>> full-duplex?
>> media: Ethernet autoselect (10baseT/UTP <half-duplex>)
>
> You should be more concerned that it is only at 10Mb. I'm not sure
> if the old 10bT protocol even supported full duplex. You definitely
> need a switch rather than hub to run full duplex, and 100Mb or better
> may also be required. Once you have that it should auto-detect and
> enable full duplex, if your other hardware is capable.
Auto-negotiation will work only if the other end (ie, the switch) is set to auto-negotiate. Otherwise the FreeBSD host will set itself to half duplex.
-jav
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