Re: New guy question

On Tue, Mar 16, 2004 at 04:48:06PM -0600, Michael Scott scratched on the wall:
> Quoting "Jay A. Kreibich" <jak@xxxxxxxx>:
>
> >   Wireless connections have a huge amount of overhead and are
> >   inherently half-duplex since they are all-- literally-- broadcast
> >   traffic.  802.11g also suffers from greatly degraded performance in
> >   the presence of even a single 802.11b client
>
> Wow! I hadn't heard that.  What happens if I have an 11g setup and my
> neighbor has an 11b?  I can't exactly tell them to turn it off.

  If you have a "b" client associate with a "g" access point, then
  *all* stations on that access point drop to nearly "b" speeds (true
  "g" clients are more than 11Mb, but not by much).  This is due to an
  incompatibility in the "backwards compatiable" part of the "g" frame
  headers.  It works, but it all works slowly.

  In the case of a neighbor with a "b" system, unless you are on
  similar frequencies or unless they have a end-station that associates
  with your access point, it shouldn't be a problem.

   -j

--
                     Jay A. Kreibich | Integration & Software Eng.
                        jak@xxxxxxxx | Campus IT & Edu. Svcs.
          <http://www.uiuc.edu/~jak> | University of Illinois at U/C

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