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

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



Wavelink Avalanche Cisco 79xx Wireless Phone Deployment

Over the next few weeks I’ll share my deployment strategy, challenges, design overview, testing and hands on experience while deploying one of the largest Wavelink Avalanche Cisco 79xx Wireless Phone deployments on planet earth!

I was challenged to reduce our organizations Cisco 79xx Wireless Phone deployment overhead while improving our post deployment manageability.

After clearly understanding the needs and requirements I evaluated a number of solutions and internal procedural changes to streamline a planned massive Cisco 7925 Wireless Phone deployment. It was clear an enterprise solution was needed.

Communication in Healthcare is arguably the most critical. It could mean life or death. Managing thousands of wireless phones in a healthcare system becomes a very sensitive matter while also posing a massive responsibility and an attention to detail at an extremely high level.

The consideration to demo Wavelink initially was a no brainer. The Wavelink ‘agent’ is already installed from the factory on each Cisco 79xx wireless handset. Wavelink is not new to me. Previously I was employed by a mobility company that deployed WiFi for 2 of the largest rental car companies in the US. We used Wavelink to manage thousands of Motorola hand helds across the nation.

I was surprised and concerned to learn that there wasn’t a lot of web content specific to Wavelink Avalanche and Cisco deployments. If you are considering Wavelink Avalanche I hope these post help you with your Wavelink journey.


Cisco Wavelink (Avalanche) Bug:CSCtb45669 Code 1.3(3)

We are deploying thosands of Cisco 7925 handsets with Wavelink. After extensive testing I discovered that I could not get the phone to reboot after a profile push. I reached out to Wesley Terry (Cisco's Escalation Team) and BAM! He delivers for me ... Thanks Wesley !

792x is not reprovisioning after receiving Wavelink package

Symptom: 792x is not reprovisioning after receiving Wavelink package.
If updating profile 1 or switching from profile 2, there is no provisioning trigger occurring, but the network profile config is updated.

The phone stays connected with the previous network profile information even if not existing in the network profiles.

Condition: Pushing a package to the 792x via Wavelink.

Workaround: Power cycle the phone


This is resolved in code 1.3(4)