Dot11 phone will enable the 2 Cisco versions, where dot11 phone dot11e will enable both CCA versions (802.11e and Cisco
version 2). It is recommended to enable dot11 phone dot11e.
Below are the commands to change the QBSS max threshold for each platform type.
Cisco Unified Wireless LAN Controller = config advanced 802.11b 7920VSIEConfig call-admission-limit <value>
Cisco Autonomous Access Point = dot11 phone cac-thresh <value>
CCKM Timestamp Tolerance
As of the 7.0.98.218 release, the CCKM timestamp tolerance is configurable.
In previous releases, the CCKM timestamp tolerance was set to 1000 ms and non-configurable.
The default CCKM timestamp tolerance is still set to 1000 ms in the later releases.
It is recommended to adjust the CCKM timestamp tolerance to 5000 ms to optimize the Cisco Unified IP Phone 9971 roaming
experience.
(Cisco Controller) >config wlan security wpa akm cckm timestamp-tolerance ?
<tolerance> Allow CCKM IE time-stamp tolerance <1000 to 5000> milliseconds; Default tolerance 1000 msecs
Use the following command to configure the CCKM timestamp tolerance per Cisco recommendations.
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