PS: if a "rock-solid link is a necessity" as you indicate, you may want to 
consider a "real" wireless bridge with directional yagi antenna's and such.  If 
you must use 802.11x stuff, get something in the 5GHz range and still try to 
use directional antenna.  "Cheap" stuff may or may not work - I don't know your 
environment.  You could always try/test $150 worth of cheap stuff and if it 
doesn't work deploy it elsewhere - or sell it or something.

G


-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Duffer
Sent: Sunday, October 24, 2010 9:31 PM
To: [email protected]
Subject: Re: [Ntop] Testing and Monitoring the uptime and speed of a wireless 
network connection

Now I M CONRUSEEE. WHAT HE Heck


-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Gary Gatten
Sent: Sunday, October 24, 2010 9:16 PM
To: '[email protected]'
Subject: Re: [Ntop] Testing and Monitoring the uptime and speed of a wireless 
network connection

Check out iperf. You need a pc at each end of the link.  Use the udp test as it 
measures loss and jitter and let's you set the rate/throughput of the test 
stream.

Ntop is good for viewing who is doing what, not generating traffic for 
validation tests.
------Original Message------
From: Darren Best
To: [email protected]
ReplyTo: [email protected]
Subject: [Ntop] Testing and Monitoring the uptime and speed of a wireless       
network connection
Sent: Oct 24, 2010 8:52 PM

Hi, noob to ntop (and most things pertaining to network analysis), so please be 
gentle... I'm interested in exploring the possibility of establishing a 
wireless network connection between two buildings (this is not for me, but for 
a friend's business).  I want to be able to evaluate the effectiveness of a 
network link between a wireless router at the main building and a wireless 
extender located at the second building (both off-the-shelf D-Link boxes).  I 
want to be able to log the connection speed over this link over an extended 
period of time, so that I can see if weather conditions adversely affect the 
link.  I want to do this for at least two weeks before I can advise him if the 
link is sufficiently fast and reliable (I need to see if a VOIP softphone is 
feasible in the remote location, so having a rock-solid link is a necessity). 
My question is twofold: 1) What program/tool would you use to generate a 
constant stream of consistent traffic over the wireless link (in order
  to measure the speed and/or reliability of the connection)? Would this 
require a dedicated computer, or could a lightly-used "production" PC do the 
job without causing it performance issues?  Would I also require another 
computer attached to the extender at the other end, or can traffic be 
"received" by the wireless extender alone? 2) (Assuming I can do step 1), is 
ntop the correct tool for analyzing and logging this data?  If so, can you 
point me to any documentation on doing so?  If not, any recommendations? 
Looking forward to your responses.  Thanks. Darren 





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