[hpsdr] Hermes Host ID

[Ken N9VV]

Oooops.... my apologies Alf. Sorry, showing my age and old-guy 
out-of-date knowledge. Thanks Andrea for your kind explanation.

My apologies to Alf. My commendation to Jeremy as an expert!

Ken N9VV


On 3/8/2013 5:38 PM, Andrea Montefusco wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> On 03/08/2013 11:58 PM, Ken N9VV wrote:
>
>> Do you have "20+ devices on your LAN" ??? the protocol of Ethernet is
>> CSMACD http://en.wikipedia.org/wiki/CSMACD which presents lots
>> of conflicts and lower performance as the number of items increases.
>
> Hi Ken,
>
> not anymore, just now (and really since '90) every ethernet LAN is a
> switched one, and the vast majority of switches (if not all) work at
> wire speed, so they are able to forward frames back and forth to the
> full link speed.
> Finally, the protocol on each link between computers and switch is full
> duplex (not CSMA/CD), each physical link acts as a couple of (very) high
> speed serial line, one for each direction.
> So, no fear of collision: till you have enough ports on your switch, you
> can connect computers at will.
>
>     73 *am*
>
> ----------------------------------------------------------------------
> Andrea Montefusco iw0hdv   (ex FAI10655)     http://www.montefusco.com
> tel: +393356992791                                  fax: +390623318709
> ----------------------------------------------------------------------
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