Cisco Bug: CSCvi89941 - Add options for optimized roaming to be configurable on a per WLAN basis and/or for 11v clients only
May 22, 2018
- Cisco 5500 Series Wireless Controllers
Known Affected Releases
8.2(166.0) 8.3(141.0) 8.5(120.0)
Symptom: There should exist the option to explicitly enable/disable Optimized Roaming not only for a particular WLAN, but to also only use this feature if the client devices support 802.11v BSS Transition Management. This allows for a graceful 11v BSS Transition Management Request to be leveraged rather than a harsh disassociation and rejection of further (re)association attempts without recommendations for non-11v client devices. For many verticals, such as healthcare, where there are a large number of legacy devices and non-11v capable STAs. Optimized Roaming may actually induce a poor quality of experience for many client device types and driver versions, whereas there may still be a need / use-case for more modern devices that support 802.11v. Conditions: For example, in the Advanced tab of a given WLAN should be a drop-down option for the Optimized Roaming feature (default is 'Disabled'). If 'Enabled' is selected, then the option should be presented to use either Global parameters for Optimized Roaming (Wireless > Advanced > Optimized Roaming), or configure these same parameters uniquely per WLAN. This would include an additional checkbox in the per-WLAN options for Optimized Roaming to "Use only with 802.11v capable clients." The end result being that Optimized Roaming would be invoked only for those clients associated to that WLAN that support 802.11v BSS Transition, and all other clients would not be affected whatsoever. In addition, these per-WLAN Optimized Roaming options should also be tunable/overriden on a per AP Group basis. This would allow for greater flexibility for a number of enterprise and service provider verticals and use-cases with diverse client mixes.
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