Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Cisco Wireless Controller 4402 Clients dropping connection

Posted on 2009-04-03
7
Medium Priority
?
13,109 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
7 Comments
 
LVL 9

Accepted Solution

by:
Donboo earned 1500 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
New Tabletop Appliances Blow Competitors Away!

WatchGuard’s new T15, T35 and T55 tabletop UTMs provide the highest-performing security inspection in their class, allowing users at small offices, home offices and distributed enterprises to experience blazing-fast Internet speeds without sacrificing enterprise-grade security.

 

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

 The Evil-ution of Network Security Threats

What are the hacks that forever changed the security industry? To answer that question, we created an exciting new eBook that takes you on a trip through hacking history. It explores the top hacks from the 80s to 2010s, why they mattered, and how the security industry responded.

Question has a verified solution.

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

DECT technology has become a popular standard for wireless voice communication. DECT devices are not likely to be affected by other electronic devices and signals because they operate in a separate frequency-band.
WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
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…
Suggested Courses

824 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