[lug] NIC Question (full duplex)

Doug Shaw shawd at pcisys.net
Mon Mar 18 23:20:08 MST 2002


At 09:01 PM 3/18/02, Jeffrey Siegal wrote:

>Some cards (many newer cards) will do the swap automatically, so you can 
>use a regular cable.  And you won't have *any* collsions, since each 
>system will transmit over a separate pair of wires.

This is full-duplex; any card that runs in or autodetects this 
functionality in its network connection should be able to do 
this.  Half-duplex - even on the same card - puts you back to transmitting 
on 1,2 and receiving on 3,6, meaning you'll need to a crossover cable if 
you're running at half duplex.

Any "modern" card that does FD will almost certainly do HD as well.  This 
means that unless you manually configure these cards to FD, they had better 
both autodetect it correctly or your machine-to-machine link won't work at all.

Doug   (not a fan of autodetection)





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