FundamentalsNews

30 Random Technical Thoughts by a WiFi Engineer

1) CRC is cyclic redundancy check. This means a radio received a frame and failed the checksum. A normal communication the intended receiver will not ACK and the sender will retransmit the frame. What’s important to understand when sniffing just because you have a high CRC rate in your sniffer window …

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FundamentalsNews

“Wi-Fi Doesn’t Stand For Anything. It Is Not An Acronym. There Is No Meaning.”

Let’s start 2016 with a blog post that will surely get some of you thinking. As a professional who focuses on Wi-Fi communication I’m asked from time to time what does Wi-Fi mean? The conversation usually goes something like this: What does Wi-Fi stand for? Is Wi-Fi an acronym for something? …

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802.11 – TIM and DTIM Information Elements

In this blog post I investigate 802.11 TIM and DTIM. Read the entire blog post here: http://community.arubanetworks.com/t5/Technology-Blog/802-11-TIM-and-DTIM-Information-Elements/ba-p/256997  Traffic Indication Map (TIM) –  After reviewing what the 802.11 standard says about TIM. Lets discuss in real world terms what a TIM is and how it works. You will specifically find TIM …

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Cisco 8.0 MR3 Beta Open To Public

Cisco announced public participation in 8.0 M3 beta testing. If you’re interested visit Cisco Support Community. https://supportforums.cisco.com/discussion/12755726/80mr3-beta-availability  8.0.122.x Available – 8.0MR3 Beta We are pleased to announce the availability of 80MR3 beta (Upcoming 8.0.130.0) for general testing If you are interested in participating on the beta program, please send email …

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#WLPC – Why Should You Attend?

Every year there are tons of conferences to pick and choose from to attend. If you are Aruba focused you have AirHeads, Cisco has Cisco Live, Ruckus has Big Dogs, and so on and so on. As much as I would love to I can’t necessarily attend all nor can …

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WiFi Rockstar Winner – Where Is He Now?

Last year we announced our “The Next WiFi Rockstar” contest hoping to give back to the community and provide someone with a chance to get the tools/hardware needed to learn about wireless. Recently I checked back in with the winner to see how contest prizes has helped him on his …

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News

Field Notice: FN – 64003 – AIR-ANT2568VG-N – Potential Moisture Intrusion to Radome – Replace Antenna

Important Cisco Field Notice for antenna AIR-ANT2568VG-N http://www.cisco.com/c/en/us/support/docs/field-notices/640/fn64003.html?emailclick=CNSemail  

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FundamentalsNews

Which antenna gets deactivated when you provide less than full power to a Cisco 3700 ?

A question was asked on Cisco Support Community (CSC) enquiring about what antenna is deactivated when a Cisco 3700 access point doesn’t receive a full 16.1 Watts. We have purchased 3702e and some of these access points can only get PoE (802.3af). Which antenna will be activated in this case? …

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