TIP: Click on subject to list as thread! ANSI
echo: lan
to: MIKE BILOW
from: LEE ARONER
date: 1997-08-13 18:18:00
subject: throughput

 MB> Ethernet is inherently half-duplex.
 MF> Our 100mbps cards at work are running full duplex to the hubs 
 MF> as when they are at half duplex transfers are too slow for the 
 MF> high speed lan segment they sit on.
MB> Unless you use a switching hub, an Ethernet concentrator simply repeats
  > whatever electrical signal is on any input to all outputs.  Although UTP
  > Ethernet cards have a transmit pair and a receive pair, any transmitter 
will
  > see its own data coming back in real time on the receive pair.
MB> It is more common to see switching hubs on 100 Mbps than on 10 Mbps, but 
it is
  > still awfully expensive.  If you need the speed, then you pay the money.
   So the advertisements for 100meg cards that claims "Full Duplex" 
   capabilities are only if you have a switching hub?
                                       L.A.
 -- SPEED 2.00 #2720: _M*Y_ mother?  I thought she was YOUR mother!
--- Platinum Xpress/Win/Wildcat5! v2.0
---------------
* Origin: Grey Matter * Seattle, WA * 1:343/210 * (206) 528-1941 (1:343/210)

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