Solved

Wireless Client Disconnecting when swapping APs

Posted on 2012-03-22
5
542 Views
Last Modified: 2012-04-10
We have semi-recently deployed a handful of Cisco AIR-AP1141N-A-K9 access points in our warehouse.  They are all configured as stand-alone APs, on non-overlapping channels.  They are all connected to the same LAN, and are configured with the same SSID settings.

We are able to connect to all of them, I have walked around with my phone ( <3 WiFi Analyzer) and can swap between them with no issues.

The trouble we are having is with the forktrucks.  Each truck has a PC mounted to it, utilizing WiFi to connect to the network.  These trucks run our Warehouse Management and Enterprise Resource Management software to track stock movements.  The specific problem is two pronged.  

The first symptom is the client-server based software disconnects, requiring a restart of the software, loosing all work-in-progress.

The second symptom is the trucks will eventually just give up on wifi, and refuse to connect to anything.  This has lasted for up to an hour.  Usually, by the time the driver parks, gets off the truck to make note of it, it has fixed itself (~5m).  Occasionally, it requires a system reboot before it will reconnect.

I have tried using a wireless bridge mounted to the outside of the trucks to attempt for any signal attenuation from the safety cage.  I have tried using the internal card (PRISM chipset).  I have tried using a Belkin USB Wifi adapter (broadcom chip).  All to no improvement.  

Is the correct answer to this problem a Cisco WLAN Controller?  Will that prevent the disconnect/reconnect issue?   Could I have too much overlap in my networks, causing the clients to hop between too many SSIDs in too short of a time?

Looking for suggestions - this has been plaguing us for months.

Thank you!
0
Comment
Question by:tholman
  • 3
  • 2
5 Comments
 
LVL 45

Expert Comment

by:Craig Beck
ID: 37754742
Can you post the config from one of the APs?
0
 

Author Comment

by:tholman
ID: 37754769
Please see attached file.
config.txt
0
 
LVL 45

Accepted Solution

by:
Craig Beck earned 500 total points
ID: 37754799
0
 

Author Comment

by:tholman
ID: 37754821
I will read through this tonight.  Any section in particular I should focus on?
0
 
LVL 45

Expert Comment

by:Craig Beck
ID: 37754861
Start here...

http://www.cisco.com/en/US/docs/wireless/access_point/12.2_15_JA/configuration/guide/s15roamg.html#wp1051848

Go as far as the 'Enabling Layer 3 Mobility on an SSID' section.
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

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.
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.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

770 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