Wi-Fi Latency requirements

Voice calls require no more than 50% of airtime (PHY) to be used ( including voice calls) on the medium. It should in basics not exceed 50%. So why is that? Because the devices that do the voice call should be on and off the medium fast. If they need to wait it may exceed […]

What we need to know about the standard-power AP class

What we need to know about the standard-power AP class. Last time I wrote a small article about LPI (Low Powered Indoor) and one of the benefits the 6Ghz band brings to us. So what about the second type of device class type? SP (Standard Power) With LPI APs, it doesn’t matter what channels or […]

Cisco Spaces VS CMX counting difference

With the cloud adapting era and the high energy prices a lot of companies to moving their solutions to the cloud.

6Ghz benefits with Power Spectral Density

Wi-Fi 6e gives us a fresh low noisy floor and 24x 20mhz channels to play with in Europe. Currently, there are classes of Wi-Fi 6e Access Points (APs). There is “Standard Power” and Low Power Most APs that hit the market in Europe currently only support Low Power AKA LPI (Low Power Indoor). The change […]

BLE on sidekick spectrum view

BLE’s advertising channels are 37, 38, and 39, and we also see something between 8-9 that’s actually also BLE but one of the data channels, and you see current data go over it. There are actually more data channels used by BLE as well as Zigbee, here is an illustration

CWAP – From the Physical to Data link layer.

I’m currently studying for my CWAP (Certified Wireless Analysis Professional exam.so I need to write something down otherwise it will fright my mind basically. The Mac and LLC header, inside the frame you can see both. Wireless works in the Physical and part in the data link layer ( it does the hand of their […]

Remote Spectrum analysis with Cisco

When there is a problem with a wireless client, and you have determined the coverage is good. A look into the spectrum to troubleshoot the layer 1 characteristics is a good start.This we do to rule out or find any interference on the spectrum. For that we use Chanalyzer. It comes with an accessory to […]

Awesome CWAP training

CWAP Training from Peter Mackenzie Himself, how nice to get this training from one of the most passionate wireless analysts that walks the earth :))

Packet capture under 2 min with IPHONE AND WLANPI

Checkout my video on youtube: Hookup your wlanPI do the network ( to use it as a sensor) We use its wlan0 adapter for captures so we cannot connect to its wireless side. 1) Open the Airtool PI APP on your iPhone and select your sensor (wlanpi) to get automatically discovered (also over different subnets) […]

SGT = Security Group Tag or Scalable Group Tag?

I saw often people use different terms for SGT in a Cisco environment, depending on where their start working with the technologies. Cisco is sometimes in the habit of reusing acronyms. I Don’t want to write a full blog about this but with acronyms especially with Cisco make sure all people in the conversation are […]