Re: [tlug] Cable modem, which mode ?

["Mario Luoni" <luoni@example.com>]

could somebody explain to me what the significance is of the notions
"half-duplex" and "full duplex" in a connectionless environment.

-mario

----- Original Message -----
From: "Jim Breen" <jwb@example.com>
To: <tlug@example.com>
Sent: Monday, February 25, 2002 05:13
Subject: Re: [tlug] Cable modem, which mode ?


> [Christopher SEKIYA (Re: [tlug] Cable modem, which mode ?) writes:]
> >> > Ethernet is half-duplex. (Either way, but not simultaneous.)
> >>
> >> Ethernet can be full-duplex,
>
> Basic Ethernet technology is half-duplex.
>
> "Full-duplex Ethernet" is a hacky thing using two Ethernet
> "connections". It is strictly point-to-point. (Robert Metcalfe would roll
> in his grave, except that he's still alive.)  8-)}
>
> >> and FastEthernet usually is full-duplex.
>
> Configured the right way, a p-p FastEthernet can be made to run
> Full-duplex. To an oldtimer like me, it is no longer Ethernet; just a
> pair of baseband data adaptors with 4 wires between them. Take away them
> collisions and the common channel and it's like Christianity without
> Christ.
>
> (I still have an Ethernet 1.0 adaptor in the cupboard which I show to
> students. Weighs about 1kg.) 10base5 of course, except it wasn't called
> that then.
>
> Jim
>
> --
> Jim Breen  [j.breen@example.com
http://www.csse.monash.edu.au/~jwb/]
> Computer Science & Software Engineering,                Tel: +61 3 9905
3298
> P.O Box 26, Monash University,                          Fax: +61 3 9905
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