Re: Ethernet collision

In article <1192658568.080621.312080@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
Michelot <mhostettler@xxxxxxxx> wrote:


A collision is a condition...

The word "condition" is important, and bring certainly to my
understanding.

A collision is a condition, on a half-duplex Ethernet,
where two or more stations are attempting to transmit a frame at the
same time.

And could we say that? the condition of the collision is on even if
the received signal could have been a correct frame.


Yes; in the situation of two half-duplex NICs connected via
10BASE-T/100BASE-TX, this is exactly the case. The received signal
carries a valid frame, but the NIC declares a collision anyway because
in half-duplex, transmitting while receiving ist verboten.

--
Rich Seifert Networks and Communications Consulting
21885 Bear Creek Way
(408) 395-5700 Los Gatos, CA 95033
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