Configuring an Aerohive AP on ExtremeCloud IQ

It has been a while I did a blog post, work has been relatively busier post Covid19 lockdown. Some time ago I did a site survey for my home and found insufficient 5GHz coverage. As we are all aiming to have 5 GHz wherever possible why not start with the home. I had a couple…

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Analyzing Frame Exchanges – #CWAP #Wireshark

This blog post will focus on certain aspects of Wireshark frames which can be brought to use for analyzing and troubleshooting Wi-Fi issues. I recommend downloading metageek color filters and apply it to your Wireshark for filtering specific frame types with applied colorization. You can read more about applying the color filters here. SSID/BSSID information….

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HT/VHT – #CWAP – Exam specific revision

CWAP-403 covers this topic under the 802.11 Frame Exchanges section. I’ve found this topic a bit hard to grasp. I have attempted to read the CWAP-403 study guide but honestly I could not get closer to fully grasp the topic. Much of the explanation in that book is direct copy/paste from standards documents. There is…

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Spectrum Analysis II – #CWAP #Revision

Exam Specific only as I’ve outlined another post on this topic here 1. Spectrum Analysis – 15% 1.1 Capture RF spectrum data and understand the common views available in spectrum analyzers1.1.1 Install, configure and use spectrum analysis software and hardware Configure Wi-Fi integration Save and export capture data1.1.2 Capture RF spectrum data using handheld, laptop-based…

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Medium Access Methods & QoS Frame Exchanges. #CWAP #Notes #Revision

Contention Algorithms The client STA must locate an AP to which it desires to connect which it does either actively or passively. The 802.11 MAC layer provides the following functions. Scanning – Process used to discover BSS or to discover access points within a known BSS. It can either be done passively (Beacon frames) or…

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Spectrum Analyzer – CWAP#13

Spectrum Analyzer – comprises of 15% syllabus for CWAP-403 exam. You can roughly expect around 9 questions from this section. Spectrum Analyzers range in price from a few hundred $ to thousands. They are not free to use like in the case of Wireshark etc.. I was unable to source spectrum analyzers easily and ended…

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CWAP Reference Guide so far… #CWAP12

I’ve tried to condense my notes from the study for CWAP-403 exam. The exam consists of lot of details which need to be learnt if you have not done enough capturing and analyzing 802.11 wireless frames before. CWAP 403 – Start > Introductory blog 802.11 Mac Header explained Key 802.11 Frames Troubleshooting WLAN issues #mindmap…

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802.11ac and a bit of 802.11ax #CWAP11

This blog post will be focusing on 802.11ac in particular. We visited the aspects of 802.11n in the last blog post. 802.11ac introduced the VHT (Very High Throughput) along with some core technological advancement like MU-MIMO, 256 QAM addition & support for 80MHz/160MHz channels. One of the key differences also lie in the support of…

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