I have a client running a Linksys USB wireless adapter and for some reason it insists on connecting to the AP farthest away from it. The signal is so low that it drops packets every other second. There is an AP right outside the door (10 feet) and if I remove it's association to the low signal AP (4402 Wireless LAN Controller) it re-associates with the stronger AP. Any thoughts on why it wouldn't automatically select the AP with the strongest signal?
I hate to say it, but the client device itself is responsible for determining which AP to connect to. It runs its own internal algorithms based on the radio environment, so there's little that can be done to convince it to leave a particular AP alone.
One thing that might help is to disable the 1 and 2Mbps data rates. This drastically reduces the poor-quality range of the APs. If it's connecting at that poor of a signal, this might take care of the problem.
If you're desperate, you can always block this client from using the far-away AP. The downside is that the client might legitimately want to roam to this AP one day, and it won't be able to. If you want to use it as a temporary fix, use this config on the AP:
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
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I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...