Solved

Cisco Wireless Controller 4402 Clients dropping connection

Posted on 2009-04-03
7
12,845 Views
Last Modified: 2013-12-27
We are using a Cisco 4402 wireless controller in one of my facilities and havent had a very good experience.  The clients connect wirelessly to the network and since I put this controller in, I am seeing clients drop connections. The connections will intermittently drop and then reconnect. Of course when this happens they lose their terminal sessions and other network or system access. Prior to this the aps were all autonomous and there were no problems with wireless connectivity but since the addition of the controller, we have seen several issues.  What could cause this? I have included some network info and the traps from today below.

Switch---------------------- AP -   -   -   -   -   -   -  Client
    |
Switch---------------------- AP -   -   -   -   -   -   -  Client
    |
Switch---------------------- AP -   -   -   -   -   -   -  Client
    |      |
    |    Wireless Controller
    |
Router

These are the Traps being Logged

Log System Time Trap
0 Fri Apr 3 13:13:41 2009 Interference Profile Updated to Pass for Base Radio MAC: 00:1e:13:07:9f:d0 and slotNo: 0  
1 Fri Apr 3 13:13:38 2009 Decrypt errors occurred for client 00:16:ea:f0:af:68 using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9e:d0
2 Fri Apr 3 13:10:41 2009 Interference Profile Failed for Base Radio MAC: 00:1e:13:07:9f:d0 and slotNo: 0  
3 Fri Apr 3 13:09:41 2009 Decrypt errors occurred for client 00:40:96:b7:7a:97 using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
4 Fri Apr 3 13:07:41 2009 Decrypt errors occurred for client 00:40:96:b7:7a:97 using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
5 Fri Apr 3 12:41:41 2009 Decrypt errors occurred for client 00:40:96:b7:7a:97 using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
6 Fri Apr 3 10:45:37 2009 Decrypt errors occurred for client 00:40:96:b6:38:56 using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9e:20
7 Fri Apr 3 01:25:41 2009 Load Profile Updated to Pass for Base Radio MAC: 00:1e:13:07:9f:d0 and slotNo: 0  
8 Fri Apr 3 01:23:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
9 Fri Apr 3 01:17:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
10 Fri Apr 3 01:13:41 2009 Load Profile Failed for Base Radio MAC: 00:1e:13:07:9f:d0 and slotNo: 0  
11 Fri Apr 3 01:11:41 2009 Load Profile Updated to Pass for Base Radio MAC: 00:1e:13:07:9f:d0 and slotNo: 0  
12 Fri Apr 3 01:05:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
13 Fri Apr 3 01:01:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
14 Fri Apr 3 00:45:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
15 Fri Apr 3 00:35:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
16 Fri Apr 3 00:31:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
17 Fri Apr 3 00:25:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
18 Fri Apr 3 00:23:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
19 Fri Apr 3 00:19:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
20 Fri Apr 3 00:17:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
21 Fri Apr 3 00:09:41 2009 Decrypt errors occurred for client 00:40:96:b6:38:fc using WPA2 key on 802.11b/g interface of AP 00:1e:13:07:9f:d0
0
Comment
Question by:ctna
[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
7 Comments
 
LVL 9

Accepted Solution

by:
Donboo earned 500 total points
ID: 24067923
What version of the WLC are you running?
0
 
LVL 1

Author Comment

by:ctna
ID: 24124656
Reconfigured LAG - Sorry for delay in Posting
0
 
LVL 1

Author Closing Comment

by:ctna
ID: 31566380
Thank for being only person to respond.
0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 

Expert Comment

by:imsaguy
ID: 24264238
What do you mean you reconfigured your LAG?  We're having the same issues.  Right now I have my LAG setup for mirroring.  
0
 

Expert Comment

by:DM006
ID: 31749521
I have eth same problem and don't even use LAG... I have all 1140's running on 4402's with 6.0.196 software...
0
 

Expert Comment

by:cmhtech
ID: 32864158
Anybody ever find a real solution to this problem?  We just upgraded to 6.0.196.0 and are having the same decrypt errors.
0
 

Expert Comment

by:imsaguy
ID: 32865510
Nope.
0

Featured Post

Ready to get started with anonymous questions?

It's easy! Check out this step-by-step guide for asking an anonymous question on Experts Exchange.

Question has a verified solution.

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

This subject  of securing wireless devices conjures up visions of your PC or mobile phone connecting to the Internet through some hotspot at Starbucks. But it is so much more than that. Let’s look at the facts: devices#sthash.eoFY7dic.
This paper addresses the security of Sennheiser DECT Contact Center and Office (CC&O) headsets. It describes the DECT security chain comprised of “Pairing”, “Per Call Authentication” and “Encryption”, which are all part of the standard DECT protocol.
This Micro Tutorial will show you how to maximize your wireless card to its maximum capability. This will be demonstrated using Intel(R) Centrino(R) Wireless-N 2230 wireless card on Windows 8 operating system.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…

623 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