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Q. Is it possible to set a limit to the number of clients that connect to the
access point (AP) on the AP itself?
A. In general, there is no way on the AP to limit the number of clients that connect. The
clients actually load balance between APs once they exceed the profile threshold value, which
by default is 12 users. If you enable aggressive load balancing, the WLCs might disassociate
some clients. Aggressive load balancing sets this threshold value at 3 users.
Radio Resource Management (RRM) load balances new clients across grouped lightweight
access points (LAPs) that report to each controller. The controller provides a centralized view
of client loads on all APs. This information can be used to influence where new clients attach
to the network or to direct existing clients to new APs in order to improve wireless LAN
performance. The result is an even distribution of capacity across an entire wireless network.
Note: Client load balancing works only for a single controller. It does not operate in a
multi−controller environment.
Refer to Radio Resource Management (RRM) for more information.
Troubleshoot FAQ
Q. We have finished our initial deployment of lightweight access points
(LAPs). When our clients move from one end of the building to the other,
they stay associated with the AP to which they were closest. The clients
do not appear to be handed off to the next−closest AP until the signal
strength from the initial AP is completely depleted. why?
A. The client movement from AP coverage area to a different AP zone is entirely controlled
by the WLC. The WLC talks between its APs and manages their signal strength on the basis
of how each AP senses the others. The client movement from AP to AP is entirely controlled
by the client itself. The radio within the client determines when the client wants to make the
jump from one AP to the other. No setting on the WLC, AP, or the rest of your network can
make the client move before it wants to roam to a different AP.
Q. I changed my WLC to Master Controller mode and saved the
configuration. Later, when I rebooted the WLC, I could not see WLC
retaining the Master Controller Mode. Why? Is this an issue or a normal
behavior?
A. This is the expected behavior. Master Controller mode is normally used only while new
access points are added to the Cisco Wireless LAN Solution (Cisco WLAN Solution). When
no more access points are added to the network, Cisco WLAN Solution recommends that you
disable the master controller. Because the master controller is normally not used in a
deployed network, the master controller setting is automatically disabled upon reboot or OS
code upgrade.
Q. Is there any way to recover my 2006 WLC password?
A. No, there is no way to recover the password on your WLC. If you use the Cisco Wireless
Control System (WCS) in order to manage the WLC, Wireless LAN Controller Module