How to troubleshoot WiFi interference

1. HOW TO TROUBLESHOOT
WI-FI INTERFERENCE
Presented by Don Norsworthy

2. TABLE OF CONTENTS
• Wi-Fi Interference
• Wi-Fi Modem Location
• Modem Graphic User Interface (GUI)
• 802.11 Radio Channels
• Wireless Access Points
• Wi-Fi Performance
• Closing

3. Wi-Fi Interference
 Wi-Fi radio channels are
shared by others
 Wi-Fi interference can
reduce internet speed
 Interference can cause lost
internet connection
 Interference: Microwaves,
cordless phones, walkie-
talkies, subwoofers
 Avoid mirrors, concrete,
electrical wiring, and metal
Table of Contents
The first wireless signals!

4. Wi-Fi Modem Location
 Centralize your modem
in your home
 Place it as high as
possible
 Place modem as close to
light of sight
 Move away from
kitchen, circuit breakers,
electronics
 Walls can affectWi-Fi
signal
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5. Modem Graphic User Interface
(GUI)
 Modem’sGUI allows you
to changeWi-Fi settings
 Connect directly to
modem via Ethernet
cable
 You may access GUI via
Wi-Fi if possible
 Common address for the
GUI is 192.168.0.1
 GUI has a separate login
and password
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GUI Login Screen

6. 802.11 Radio Channels
 2.4 GHzWi-Fi has 11
channels
 Preferred 2.4 GHz
channels are 1, 6, 11
 Remaining 2.4 GHz
channels have overlap
 5 GHzWi-Fi has more
channels and no overlap
 5 GHzWi-Fi is less
utilized than 2.4GHz
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Change your Wi-Fi channel

7. Wireless Access Points
 NearbyWirelessAccess
Points (AP’s) show
nearbyWi-Fi’s
 WirelessAP’s does not
show non-Wi-Fi devices
 Avoid channels that have
multiple devices
 Lower strength channels
may be a possibility
 May have to refresh to
view moreAP’s
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ScanWireless AP’s

8. Wi-Fi Performance
 Wait 30 minutes before
testing new channel
 Test performance with
http://speedtest.net or
alternate site
 Compare Ethernet and Wi-
Fi internet speeds
 Wi-Fi performance may lag
behind Ethernet speeds
 Power cycling modem can
fix most connection issues
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I feel the need for speed!

9. Closing
 For more information onWi-Fi interference please go to: How to
extendWi-Fi range, increase speed and fix problems
 If you have any other questions, please contact me via
don.norsworthy@knights.ucf.edu
 Click on image below to exit presentation.
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