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Cisco Wireless LAN Controller Configuration Guide
OL-9141-03
Chapter 7 Controlling Lightweight Access Points
Dynamic Frequency Selection
Disabling the Reset Button on Access Points Converted to Lightweight Mode
You can disable the reset button on access points converted to lightweight mode. The reset button is
labeled MODE on the outside of the access point.
Use this command to disable or enable the reset button on one or all converted access points associated
to a controller:
config ap reset-button
{
enable
|
disable
} {
ap-name
|
all
}
The reset button on converted access points is enabled by default.
Configuring a Static IP Address on an Access Point Converted to Lightweight
Mode
After an access point converted to lightweight mode associates to a controller, enter this command to
configure a static IP address on the access point:
config ap static-ip enable
ap-name ip-address mask gateway
Note
If you configure an access point to use a static IP address that is not on the same subnet on which the
access point’s previous DHCP address was, the access point falls back to a DHCP address after the
access point reboots. If the access point falls back to a DHCP address, the
show ap config general
ap-name
CLI command correctly shows that the access point is using a fallback IP address. However,
the GUI shows both the static IP address and the DHCP address, but it does not identify the DHCP
address as a fallback address.
Dynamic Frequency Selection
The Cisco UWN Solution complies with regulations that require radio devices to use Dynamic
Frequency Selection (DFS) to detect radar signals and avoid interfering with them.
When a lightweight access point with a 5-GHz radio operates on one of the 15 channels listed in
Table 7-2
, the controller to which the access point is associated automatically uses DFS to set the
operating frequency.
When you manually select a channel for DFS-enabled 5-GHz radios, the controller checks for radar
activity on the channel for 60 seconds. If there is no radar activity, the access point operates on the
channel you selected. If there is radar activity on the channel you selected the controller automatically
selects a different channel, and after 30 minutes, the access point re-tries the channel you selected.
Note
The Rogue Location Detection Protocol (RLDP) is not supported on the channels listed in
Table 7-2
.
Note
The maximum legal transmit power is greater for some 5-GHz channels than for others. When it
randomly selects a 5-GHz channel on which power is restricted, the controller automatically reduces
transmit power to comply with power limits for that channel.
