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Did you know Cisco and Intel have a joint program called E2E which enhances roaming !? Its called E2E, End-2-End.

A google search yields almost nothing on the technicals of this technology other then what is mentioned in the Cisco deployment guides. As early as Cisco code release 4.0 through 6.0 mentions "E2E". It states the following:

Enhanced neighbor list request (E2E)—The End-2-End (E2E) specification is a Cisco and Intel joint program that defines new protocols and interfaces to improve the overall voice and roaming experience. It applies only to Intel clients in a Cisco Compatible Extensions environment. Specifically, it enables Intel clients to request a neighbor list at will. When this occurs, the AP forwards the request to the WLC. The WLC receives the request and replies with the current Cisco Compatible Extensions roaming sublist of neighbors for the AP to which the client is associated.

You can do the following commands to determine if your Intel clients are E2E compatible:

(Cisco_2006_WLC) >show client detail <Client Mac Address>

(Cisco_2006_WLC) >show client detail 00:21:6a:11:a8:02

Client MAC Address............................... 00:21:6a:11:a8:02

Client Username ................................. unknown

AP MAC Address................................... 00:1c:b0:06:d2:d0

Client State..................................... Associated

Wireless LAN Id.................................. 1

BSSID............................................ 00:1c:b0:06:d2:d0

Connected For ................................... 3165 secs

Channel.......................................... 11

IP Address....................................... 10.10.0.243

Association Id................................... 2

Authentication Algorithm......................... Open System

Reason Code...................................... 0

Status Code...................................... 0

Session Timeout.................................. 0

Client CCX version............................... 4

Client E2E version............................... 1

QoS Level........................................ Silver

Diff Serv Code Point (DSCP)...................... disabled

802.1P Priority Tag.............................. disabled

WMM Support...................................... Disabled

Power Save....................................... OFF

Current Rate..................................... 54.0

You can also view this in the gui.

WIRLESS-->CLIENTS-->DETAIL