Wired Stuff
WiFi Tablet Corner
My80211 White Papers (Coming Soon!)

Cisco Wireless Compatibility Matrix (Nov. 2011)

Podcasts / Videos

My80211 Videos

Cisco: 802 11 frames with Cisco VIP George Stefanick

Fluke Networks: Minimize Wi Fi Network Downtime

Aruba: Packets never lie: An in-depth overview of 802.11 frames

ATM15 Ten Talk “Wifi drivers and devices”

Houston Methodist Innovates with Wireless Technology

Bruce Frederick Antennas (1/2)


Bruce Frederick dB,dBi,dBd (2/2)

Cisco AP Group Nugget

Social Links
Revolution WiFi Capacity Planner

Anchor / Office Extends Ports


Peek Inside Cisco's Gear

See inside Cisco's latest wireless gear!

2.4 GHz Channel Overlap




  • CWSP Certified Wireless Security Professional Official Study Guide: Exam PW0-204
    CWSP Certified Wireless Security Professional Official Study Guide: Exam PW0-204
    by David D. Coleman, David A. Westcott, Bryan E. Harkins, Shawn M. Jackman

    Shawn Jackman (Jack) CWNE#54 is a personal friend and has been a mentor to me for many years.  I've had the pleasure and opportunity to work with Jack for 4 years. Jack is a great teacher who takes complex 802.11 standards and breaks them down so almost anyone can understand the concept at hand. I'm excited for you brother. Great job and job well done! Put another notch in the belt!

IEEE 802.11a/g/n Reference Sheet


LWAPP QoS Packet Tagging



Interference Types


Microwave Oven

Cordless Phone


Guest Book

I just want to let you know that your blog is awesome. I like it very much. I wish if I have the time to go through most of what you write here.
I want you please to keep the good work of feeding this blog with updated Wi-Fi information. I bit it will be a very important resource for Wi-Fi beginners and even experts.



April 13, 2013 | Unregistered CommenterAmjad Abdullah

Follow your blog since a while, greate articles!

October 11, 2012 | Unregistered CommenterMarkus Brinkmann

I've acquired a couple of certs over the past 3 years and have no chance to excerise any of that knowledge. I'm building my own lab of routers and switches to get away from packet tracer and expand into wireless studies, and get the hands on that I'm unable to have at work. Last year I got my CWNA and now the contract where I am working is changing in September and I need to get my CCNA Wireless. I picked up a 3745 and then bought a NM-AIR-WLC6. I incorrectly assumed that it would be functional when I bought it, there was no flash memory installed on card thus no operation system. I've since bought a CF card and downloaded the ios (.aes files) for it but the router still does not recognize the module. When doing a sh inventory the module comes up as "Unknown". Also after scouring I found a sentence in the guides that states,"The CompactFlash memory card contains the boot loader, Linux kernel, Cisco WLCM and APs executable file, and the Cisco WLCM configuration." I cannot locate the remainder of the files on nor can I locate instruction to start this thing up from scratch. Can anyone please help me?


July 31, 2012 | Unregistered Commenterwireless newbie

I like the website! Just started one myself, could use some tips. Should be getting my CWDP next week, wish me luck.

July 10, 2011 | Unregistered CommenterSean Rynearson

You helped me out on Cisco wireless forum. I went to your journal and your information helped me solve some of my other problems. Where I currently work there is not a heavy emphasis on wireless. But, that is starting to change with handheld and other wireless devices. Very nice site, keep up the good work.

February 10, 2011 | Unregistered Commenterdfranek


I'm pleasantly surprised by the amount of knowledge you have, at the moment I'm studying for the CCIE wireless written (thinking I already know a lot) and can use your knowledge. I have done the beta written test for fun but failled. I would like to login to your site, wondering though what the extra would be, but cannot find a way to register (perhaps I overlook?)

I would like to know if you also have some information on EAP, I find all kinds of different pieces of puzzle but not the whole, would appriciate if you could help out.

thanks in advance

October 15, 2010 | Unregistered CommenterSaskia

Well... I when your studying anything the more you learn the more you see how much you really don't know. This has happened to me again today. I wrote a review on Amazon regarding the CCNA Wireless book and I now see there is so much more out there than is covered. I admit that the book gave me a basic foundation, but it is just that a basic foundation where there is so much more. amazing... I now feel a bit dumb founded, all there is to do is pick up the pieces and continue on. Learn more, grow more. The milk is already spilled call the cat, life goes on. Glad I found this and looking forward to expanding my knowledge base, being pointed in the right direction and helping other to find there direction when and where I can.

JC. Bogard

April 15, 2010 | Unregistered CommenterJC.Bogard

A nice start and its always nice to pass on various details...

many thanks

April 27, 2009 | Unregistered CommenterDavid Ruane

Looks like a great site getting underway here. I plan on bookmarking it and coming back often. I work for Trapeze Networks and hospitals are a big one for us. Wireless VOIP and Vocera are always being deployed. I will be keeping an eye on your site for tips and tricks!
We may of worked together in the past. Prior to coming to Trapeze I was working out of Mechanicsberg PA with a wireless VAR. I designed the wireless network at Temple University Hospital there in Philadelphia.

April 14, 2009 | Unregistered CommenterJim Ambrose

I came across your site from the CWNP forums. A+ site! I watched your nugget and thought it was well done. Maybe in the future you can do something like a nugget for site surveying and how to set up a public network on your enterprise network. So people can come in and hit the web while they are waiting for an appointment. Good site

March 25, 2009 | Unregistered CommenterWireless_Rules

Cool Site!

February 18, 2009 | Unregistered CommenterBill Murray

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