Cisco Centralized Key Management (CCKM) is a form of
Fast Roaming
IEEE 802.11r-2008 or fast BSS transition (FT), is an amendment to the IEEE 802.11 standard to permit continuous connectivity aboard wireless devices in motion, with fast and secure client transitions from one Basic Service Set (abbreviated BSS, an ...
and a subset of the
Cisco Compatible EXtensions
The Cisco Compatible Extensions (CCX) Specification describes a list of functional extensions to the IEEE 802.11 Wireless LAN standard to support fast roaming (CCKM) with upgraded security, reliability, and diagnostic performance. This specificati ...
(CCX) specification.
When a
wireless LAN is configured for fast reconnection, a
Lightweight Extensible Authentication Protocol Lightweight Extensible Authentication Protocol (LEAP) is a proprietary wireless LAN authentication method developed by Cisco Systems. Important features of LEAP are dynamic WEP keys and mutual authentication (between a wireless client and a RADIUS ...
(LEAP) enabled
client device can roam from one
wireless access point to another without involving the main
server
Server may refer to:
Computing
*Server (computing), a computer program or a device that provides functionality for other programs or devices, called clients
Role
* Waiting staff, those who work at a restaurant or a bar attending customers and su ...
. Using CCKM, an access point configured to provide
Wireless Domain Services (WDS) takes the place of the
RADIUS server, and authenticates the client without perceptible delay in voice or other time-sensitive applications.
The WDS (which can be run as a service on a Cisco Access Point or on various router modules) caches the user credentials after the initial log-on. The user must authenticate with the Radius server the first time – then they can roam between access points using cached credentials. This saves time in the roaming process, especially valuable for
VoIP devices.
The current implementation of CCKM requires Cisco compatible hardware and either LEAP, EAP-FAST (CCXv3) or PEAP-GTC, PEAP-MSCHAP, EAP-TLS (CCXv4).
External links
*http://www.cisco.com/web/partners/pr46/pr147/program_additional_information_new_release_features.html
Wireless networking
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