Subject: Re: Multiport Ethernet NICs
To: John Hayward <>
From: Jason R Thorpe <>
List: tech-kern
Date: 07/05/2000 06:43:05
On Wed, Jul 05, 2000 at 07:25:57AM -0500, John Hayward wrote:

 > Under 1.3.3 autoselect seems to work - the 100 light is on (not sure if
 > we are running full or half duplex).
 > Under 1.4.1 autoselect seems to work at 10baseT but not at 100.
 > Under 1.5 autoselect does not seem to work, setting at 100 we can get
 >   get half duplex to work but not full duplex.
 > Anyone else experiencing similar problems?
 > johnh...

Not really... we have tons of these interfaces in various machines,
plugged into all sorts of different hubs/switches, and they always
seem to get speed/duplex correct.

Hard-wiring one side for 100 or 100-fdx requires that you also hard-wire
the other side to the same thing in order for it to function properly,
so you should do this only if you have a managed switch that has these

        -- Jason R. Thorpe <>