According to IEEE NO, 100 Meters is the max cable distance for Half or Full
100MB Ethernet over TP. In reality, Yes it will extend the range, The
reason why is that at full duplex you can not have collisions, and
collisions are the main reason for the distance limitation (Cross Talk comes
into play as well). The reason behind this is that in the original IEEE
spec the distance limitation was set so that a single 64Byte packet (the
smallest) could be transmitted down the line and would collide with another
packet before the 64Byte packet header had been completely transmitted, when
this does not happen properly you see late collisions, these indicate a
collision past the preamble header of the packet and indicate a cable length
that is to long. If you need to even go close to the 100 Meter mark you
should consider 100BaseFX or similar.
Shawn
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Li
Song
Sent: Monday, December 25, 2000 4:33 AM
To: [EMAIL PROTECTED]
Subject: is this statement true ??
"full-duplex can be used over longer distance than
half-duplex" ??
what 's your opinion ??
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