Overview: Below outlines microwave RF interference on the 2.4GHz radio band using Cisco Spectrum Expert (SE) software and Cisco Access Point (Autonomous).

RF interfrecne is seen across Channels 8-16 and Duty Cycles increases up to  50% on Channels 9-11. 

Kit: Windows 7

Cisco 2702i Autonomous Access Point (Spectrum Mode)
Cisco Spectrum Expert 4.1.11
Microwave Oven

Steps:

Control Environment before switching on the mi

Install Spectrum Expert (SE) – Required CCO
https://software.cisco.com/download/home/281783245/type/281789927/release/4.1.11?imageguid=5619F989C81333FAC3B07E4B47AB0594E93D4982

Connect (SSHv2) to Autonomous Access Point via putty.

Configure the AP into SE-Connect mode using these commands:

int dot11radio 0
station-role spectrum
exit
int dot11radio 1
station-role spectrum

exit

NSI key is required to connect to the Cisco CleanAir Access Point
show spectrum status

Launch Cisco Spectrum Expert and connect to the Cisco 2700 Autonomous Access Point using IP Address and Key

Before Microwave:

Real Time FFT

FFT Duty Cycle

Channel Utilization

Channel Summary

Microwave Switched On:

Real Time FFT – Microwave Interference 

FFT Duty Cycle – Microwave Interference with Duty Cycle increasing across Channels 9-11.

Channel Utilization – Microwave Interference

Channel Utilization Vs Time – Microwave Interference

Channel Summary – Microwave Interference