I'm currently studying for the CWDP exam and I have the following question:
Page 446 describes a Real World Scenario where a CWNE has used a protocol analyzer to check RF Channel utilization. How can I do it using Wireshark/Airpcap, Omnipeek, AirMagnet and CommView for WiFi?
Ok, ok guys let's be fair. If you know how to do it with any protocol analyzer please let me know. Things that I am considering:
1) RF channel utilization consider IFS?
2) Real numbers only achieved if the analyzer uses a static channel
3) RF channel utilization does not depend on the rates used, it's a raw measure, correct?
4) Is it like duty cycle?
I'll get to the first part of your question... in the meantime...
2. Analyzers sit on a channel for a short period of time (250 ms) when you're scanning, so they make the utilization calculation based on that observed time interval. The utilization numbers are more reliable if you use a static channel.
4. Yes, but Wi-Fi only.
In CWDP book page 674 I can see how it is done with AirMagnet.
If IFS are not considered then a 100% utilization should be impossible right?
Unfortunately I don't have AirMagnet so I'm still interested in knowing how to do it with Wireshark or OminiPeek.