Installation guide

96
Wi-Fi Location-Based Services—Design and Deployment Considerations
OL-11612-01
RFID Tag Considerations
Enable Asset Tag RF Data Timeout
The RFID Data Timeout parameter sets a static value of time (seconds) that must elapse without any
access points on the controller detecting an asset tag before that asset tag is removed from the internal
tables of the controller. Cisco recommends that this parameter be set to between 8 and 10 times the value
that was specified in the asset tag for the beacon interval. The valid range of values for this parameter is
60–7200 seconds and the default value is 1200 seconds.
For example, for a tag with a constant beacon interval of 60 seconds, you may choose to set the RFID
data timeout to 480:
(Cisco Controller) >config rfid timeout 480
(cisco Controller) >
(Cisco Controller) >show rfid config
RFID Tag data Collection......................... Enabled
RFID Tag Auto-Timeout............................ Disabled
RFID Client data Collection...................... Disabled
RFID data timeout................................ 480 seconds
Enable Asset Tag Polling on the Location Appliance
To use the location appliance for asset tag tracking, asset tag polling must be explicitly enabled via the
Locate > Location Server > Polling Parameters GUI panel. To enable it, use the checkbox indicated in
Figure 67 in red.
Figure 67 Enabling L2 Multicast RFID Tag Polling
The default polling interval value represents the time period between the start of subsequent polling
cycles in which the location appliance polls the controller. For example, if a polling cycle requires 30
seconds to complete, and the polling interval is 300 seconds, polling cycles start every 330 seconds, as
shown in Figure 68.