Solved

Cisco Wireless Random Drop/Auth Issues

Posted on 2013-11-06
5
490 Views
Last Modified: 2013-11-11
Heyas,

For all the networking guru's out there I am looking for some general guidelines for troubleshooting random drop/auth issues on Cisco Wireless networks. I know that checking the clock sync and signal  on the base station devices are two things.

What other things should I be checking any tips would be much appreciated.

Thank you.
0
Comment
Question by:Zack
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 9

Accepted Solution

by:
neilpage99 earned 250 total points
ID: 39629049
Check the connected hosts table of your access point(s); confirm which hosts are connected via wireless and that they are legitimate.

Wireless cracking is pretty common, and one of the cracking methods involves sending a renegotiation packet to the accesspoint or client, which causes the wireless client to temporarily drop the wireless connection (as it attempts to renegotiate).

Also, confirm from your access point logs if the access point itself is having issues, rather than your clients.

Check for updated wifi NIC drivers on your clients.

Check for signal strength on your wifi clients; are all of them having this same issue?
0
 
LVL 95

Assisted Solution

by:John Hurst
John Hurst earned 250 total points
ID: 39629053
Also make sure Wireless Network cards are set NOT to turn off. Check Device Manager and Uncheck "Allow this card to turn off to save power". In your Windows Power Manager, set Wireless to Maximum Performance.

Default settings cause the wireless card to turn off and disconnect after a period (20 - 30 minutes) of disuse.  

... Thinkpads_User
0
 
LVL 46

Expert Comment

by:Craig Beck
ID: 39629844
Are we talking enterprise Cisco networks, or home/small business Cisco wireless?

The clock is only really relevant if you're using RADIUS, so if you're using preshared keys it's not going to cause a problem.

Interference is a large factor in drops or authentication issues, especially if the AP/client can't work out what's noise and what's not.
0
 

Author Closing Comment

by:Zack
ID: 39637837
Thank you for the advice.
0
 
LVL 95

Expert Comment

by:John Hurst
ID: 39638406
@hellworld12345 - Thanks and I was happy to help.

.... Thinkpads_User
0

Featured Post

Why Off-Site Backups Are The Only Way To Go

You are probably backing up your data—but how and where? Ransomware is on the rise and there are variants that specifically target backups. Read on to discover why off-site is the way to go.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
line utilization 4 30
Cisco 3650 switch 1G port to 10G port 6 51
patch status tool - free 9 61
testing a port being open in firewall 6 56
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

710 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question