Wireless equipments choosing help needed

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Hi,
My name is Saeesh Pai Vaidya & I work in D-Link india Ltd as senior
engineer R&D department.We are in process of developing an Wireless
router so i wanted to buy the wireless testing tools for the same.
I wanted to know wether the IXIA  IXWLAN Tool can alone be sufficient
for the same  ,I want to note the RF parameters readings like the *TX &
RX signal readings (in dB)* also in addition i want to *sniff the
wirelesspackets & check them for various parametrers  can IXIA  IXWLAN
tester alone be sufficient to achieve this ????*
One more probable solution i found was using  *Agilent N4010 Wireless
testing suit plue 2.4Ghz WLAN testing module  for testing RF section
*also using  *Aeronet wireless sniffer (AiroPeek SE) to sniff wireless
packets ..*

can anybody advise me which will be the best cost effective solution
which will help me to test my Wireless router  for all these
parameters.
if has any better suggestion or advise Please  mail me at :
*saeeshv@dlink.co.in*

Thanks in Advance
Saeesh Pai Vaidya


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Re: Wireless equipments choosing help needed


On Fri, 15 Jun 2007 03:37:34 -0400, saeesh007

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Probably not.  It's mostly a benchmarking program.  If you're only
interested in testing and optimizing for performance, then the various
IXIA products are fine.
<http://www.ixiacom.com/products/test_applications/
If you're trying to get the timing right, or diagnose MAC layer
problems, these won't work.

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No way.  Sniffing is always done independently because at the higher
speeds, the capture buffer will swamp any attempt to do anything else
at the same time.  There's really no need to do sniffing unless you're
doing compliance testing or protocol optimization.  What "various
parameters" are you looking for?  If it's data corruption, timing, or
collisions, most PC based software won't work because the corrupted
garbage will never get past the PAD (packet assembler/disassembler).
Reminder:  ethernet switches and bridges do NOT pass corrupted packets
and collisions.

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RF parameters are best measured with RF test equipment, such as the
Agilent N4010.
<http://www.home.agilent.com/agilent/industry.jspx?nid=-35767.0.00&cc=US&lc=eng
This can later be moved to production test or possibly QA.

You might want to look at:
<http://www.veriwave.com
Be sure to tell Veriwave that their capacity calculator spreadsheet
downloads a corrupted file.
<http://www.azimuthsystems.com
<http://www.smallnetbuilder.com/content/view/26746/100/

Also, you can do quite a bit using a traffic and stream simulator such
as IPerf:
<http://dast.nlanr.net/Projects/Iperf/>

There's a big problem using sniffers and protocol analyzers.  Neither
will show packet corruption or collisions at the MAC layer.  They all
tend to work at the IP layer.  To get raw packet statistics, the data
collection has to built into the wireless chips on the product, and
delivered to the JTAG port from the usually pre-compiled RF chip
drivers supplied by the chip vendor.  If you dive into the SNMP stack
on your new product (if it has one), and you don't see MAC layer
packet statistics, you're going to have a big problem doing RF traffic
optimization and troubleshooting.  If you have a decent client that
displays these statistics, you have perhaps half a chance of getting
it right.

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No, I can't advise.  I have no idea what you trying to accomplish.  Is
it development engineering, protocol optimization, compliance testing,
regulatory certification, production test, QA, etc?  Much of what you
suggest will work for some of this, but no single solution is "best"
or "cost effective" for all of these functions.  It's also impossible
to provide a "cost effectve" solution if I don't know your budget
limitations.

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If you can post messages to a usenet newsgroup, you can also read your
replies in the same newsgroup.  If you want private email, I'll gladly
send you may consulting rate card.

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