Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide, Cisco IOS XE 26.1.x
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Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide, Cisco IOS XE 26.1.x
Updated: April 10, 2026
Introduces Opportunistic Key Caching mechanisms and explains how this security feature enables faster client roaming by pre-authenticating devices across wireless access points.
Explains the OKC technique that allows wireless clients and the WLAN infrastructure to cache only one PMK for client association with a WLAN.
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