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Posted by Michelot on November 21, 2007, 6:13 am
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Thanks for these useful words, it makes me thinking more deeply
(euh... I try, I try...).
> Since in principle half duplex makes the individual bits available
> "simultaneously" to all hosts attached to the single Ethernet, there
> is no "store and forward" going on at all. It's always cut-through, at
> least in principle. In fact, half duplex can be considered bit-by-bit
> cut-through.
You're right, the CSMA/CD algorithm is like that. The MAC frame is
sent in a bit-serial form, the collision is observed after each bit
transmitted.
> half duplex can be considered bit-by-bit cut-through.
I like this statement
> ...Unless you use half-duplex just to get access to a switch
> port, which of course is an option.
Face to a collision domain, a switch port needs to be in half-duplex.
Best regards,
Michelot
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