As a student employee I've done some research on 802.11k and I understand that it's intended to help with devices roaming and also helping the client decide on the best (B)SSID to join. In practice for large-scale networks it would be beneficial, especially in areas where Wi-Fi signals "bleed" between floors due to a high volume of access points. The access point would inform the client of nearby BSSIDs that it may join and report the "best" one to request authentication with.
What I have not yet found is how well 802.11k actually performs. I cannot find any reports of problems when enabled in large-scale networks or issues with certain vendor products. So I'd like to ask, what are some, if any, known implications that 802.11k causes on a wireless network when enabled?
Does 802.11k cause connectivity problems with older devices that do not support it?
Does 802.11k cause problems with load-balancing, WMM, 802.11h? (We had to disable 802.11h due to Yosemite connection issues)
Does it rely on other neighbor-detecting protocols (CDP, LLDP)?
Do switches and routers need to be configured to aide 802.11k?
Does it throw clients into a loop by frequently pointing them to different APs to connect to?
In advance, thank you for any comments you make.