Cisco Wireless Random Drop/Auth Issues

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.
ZackGeneral IT Goto GuyAsked:
Who is Participating?
 
neilpage99Connect With a Mentor Commented:
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
 
John HurstConnect With a Mentor Business Consultant (Owner)Commented:
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
 
Craig BeckCommented:
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
 
ZackGeneral IT Goto GuyAuthor Commented:
Thank you for the advice.
0
 
John HurstBusiness Consultant (Owner)Commented:
@hellworld12345 - Thanks and I was happy to help.

.... Thinkpads_User
0
All Courses

From novice to tech pro — start learning today.