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Old 11-04-2004
L
 
Posts: n/a
Default Re: Help - GbE speed and duplex


"David Schwartz" <davids@webmaster.com> wrote in message
news:cme5u7$iea$1@nntp.webmaster.com...
>
> "Andrew Balmos (abalmos)" <please@see.sig> wrote in message
> news:pan.2004.11.04.15.26.32.400841@see.sig...
>
> > Ethernet can only send a packet one direction at a time (i.e. a packet

can
> > not be coming to the NIC and leaving the NIC at the same time) if that
> > happens you have whats called a media collision in networking. So GbE
> > allows you to send 1 Gig of data per second, any amount of that 1 Gig

can
> > be going either way.
> >
> > Wire speed is that of how much data it can send per second. In this case

1
> > Gig.

>
> Everything said above is completely incorrect. Full-duplex ethernet

has
> been around for a very long time. In fact, with GigE, all connections are
> full duplex (to date nobody has bothered to implement half-duplex).
>


I'm back to black again :-(

Are you saying:
- data can be sent in both directions at the same time on GbE protocol, and
- the bandwidth of GbE protocol is 2 Gbit/sec for full-duplex (sending data
both ways at the same time) and 1 Gbit/sec for half-duplex?

Thanks,


T.
--


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