Specifications

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Cisco Wireless LAN Controller Configuration Guide
OL-21524-02
Chapter 4 Configuring Controller Settings
Configuring and Viewing Location Settings
• Configure the RSSI timeout value for various devices by entering this command:
config location expiry ?
where? is one of the following:
– client timeout—Configures the RSSI timeout value for clients. The valid range for the timeout
parameter is 5 to 3600 seconds, and the default value is 5 seconds.
– calibrating-client timeout—Configures the RSSI timeout value for calibrating clients. The
valid range for the timeout parameter is 0 to 3600 seconds, and the default value is 5 seconds.
– tags timeout—Configures the RSSI timeout value for RFID tags. The valid range for the timeout
parameter is 5 to 300 seconds, and the default value is 5 seconds.
– rogue-aps timeout—Configures the RSSI timeout value for rogue access points. The valid
range for the timeout parameter is 5 to 3600 seconds, and the default value is 5 seconds.
Ensuring that recent, strong RSSIs are retained by the CPU is critical to location accuracy. The
config location expiry command enables you to specify the length of time after which old RSSI
averages expire.
Note We recommend that you do not use or modify the config location expiry command.
• Configure the RSSI half life for various devices by entering this command:
config location rssi-half-life ?
where ? is one of the following:
– client half_life—Configures the RSSI half life for clients. The valid range for the half_life
parameter is 0, 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, or 300 seconds, and the default value is 0
seconds.
– calibrating-client half_life—Configures the RSSI half life for calibrating clients. The valid
range for the half_life parameter is 0, 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, or 300 seconds, and
the default value is 0 seconds.
– tags half_life—Configures the RSSI half life for RFID tags. The valid range for the half_life
parameter is 0, 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, or 300 seconds, and the default value is 0
seconds.
– rogue-aps half_life—Configures the RSSI half life for rogue access points. The valid range for
the half_life parameter is 0, 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, or 300 seconds, and the default
value is 0 seconds.
Some client devices transmit at reduced power immediately after changing channels, and RF is
variable, so RSSI values might vary considerably from packet to packet. The config location
rssi-half-life command increases accuracy by averaging nonuniformly arriving data using a
configurable forget period (or half life).
Note We recommend that you do not use or modify the config location rssi-half-life command.
• Configure the NMSP notification threshold for RSSI measurements by entering this command:
config location notify-threshold ?
where ? is one of the following:
– client threshold—Configures the NMSP notification threshold (in dB) for clients and rogue
clients. The valid range for the threshold parameter is 0 to 10 dB, and the default value is 0 dB.