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Cisco Compatible Extensions Example: Cisco Centralized Key Management Cisco Centralized Key Management allows the wireless infrastructure to cache the credentials, thus removing the need to conduct a full reauthentication when roaming
Cisco Compatible Extensions Example: AP-Specified Maximum Power In a heterogeneous environment, a power difference between clients and AP can prevent clients from being heard by the AP. With Cisco Compatible Extensions, the AP can detect and automatically configure the optimal transmit power for the client.
Cisco Compatible Extensions Example: Enhanced Roaming Ping-pong effect occurs when a wireless client is at the edge of two cells and hops between them. Cisco Compatible Extensions allows the AP to determine “inner regions” where scanning is not required and “outer regions” where the client, about to lose connection, would be allowed to scan for a better AP.
Cisco Compatible Extensions Example: Client Link Test Client link test allows the AP to query the client for its own reading of the AP signal, and provide a deeper view of the client connection to the network
Cisco Compatible Extensions Example: Client Reporting Client reporting allows the AP to get information from the client about its various parameters. This allows the administrator to collect data to optimize the network, but also, for example, for the AP to learn where the client would prefer to connect, and to redirect it to the right AP, if it is in range.
Cisco Compatible Extensions Example: Client MFP When using MFP, client and AP use a key to authenticate management messages, thus making AP impersonation virtually impossible
Cisco Compatible Extensions Features and Versions Summary AP-assisted roaming Cisco Centralized Key Management enhancement Gratuitous probe Response Diagnostic channel Association Location service AP-assisted roaming Cisco Centralized Key Management with other EAP types AP-directed roaming Location Keep alive Link test AP-assisted roaming Cisco Centralized Key Management with EAP-FAST Single sign on: LEAP, EAP-FAST AP-assisted roaming Cisco Centralized Key Management with LEAP Proxy ARP information element Mobility And Management Expedited bandwidth request U-APSD TSPEC CAC Voice metrics Voice over IP Wi-Fi Multimedia (WMM) eDCF Multiple SSIDs/VLANs on AP VLANs and QoS Management Frame Protection for clients NAC (wireless) EAT-TLS PEAP-MSCHAP WPA2 EAP-FAST PEAP-GTC WPA WEP IEEE 802.1X LEAP Cisco TKIP Security v5 v4 v3 v2 v1