On 09/21/2015 04:05 PM, Kristian Kielhofner wrote:
Per existing standards the network doesn't decide AP selection, the client does. The only specific roaming extension I know of is 802.11r which defines a caching mechanism to reduce the authentication delays associated with switching access points; the goal being that even fairly complex 802.1x authenticated networks with RADIUS backends, etc can provide the same general roaming characteristics and timing of unauthenticated networks.
I imagine that various AP equipment vendors with controller based architectures could (and probably do) implement some things to influence client behavior and/or improve the roaming experience; such as enforcing some administrator defined or preferred behavior by having access points trigger client roaming with carefully controlled output power, selective disassociation frames, AP/BSS specific association rules/preferences, etc.
Thanks, that was the precise gap in my understanding. -- Alex Balashov | Principal | Evariste Systems LLC 303 Perimeter Center North, Suite 300 Atlanta, GA 30346 United States Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/