300-425 · Question #232
A network engineer is working for an enterprise where most of the laptops support 802.11v. To optimize the client roaming experience, configuration changes must be made on the corporate SSID to…
The correct answer is B. Enable the BSS transition option with an optimized roaming timer for the corporate. To force 802.11v-capable clients to roam to the best available AP, the correct Cisco configuration is enabling BSS transition on the SSID combined with the optimized roaming timer.
Question
A network engineer is working for an enterprise where most of the laptops support 802.11v. To optimize the client roaming experience, configuration changes must be made on the corporate SSID to force clients to use the best APs based on the 802.11 v BSS transition message. Which configuration meets this requirement?
Options
- AEnable BSS transition for the SSID and disable dissociation imminent to avoid client
- BEnable the BSS transition option with an optimized roaming timer for the corporate
- CEnable coverage hole detection and BSS transition and disable dissociation imminent.
- DDisable coverage hole detection and enable 802.11k for the corporate SSID.
How the community answered
(44 responses)- A2% (1)
- B77% (34)
- C14% (6)
- D7% (3)
Why each option
To force 802.11v-capable clients to roam to the best available AP, the correct Cisco configuration is enabling BSS transition on the SSID combined with the optimized roaming timer.
Disabling Disassociation Imminent means the BSS transition frame only suggests roaming rather than compelling it, so stubborn or non-compliant clients can simply ignore the recommendation.
Enabling BSS transition activates 802.11v BSS Transition Management, which allows the AP to send BSS Transition Management Request frames to steer clients toward better APs. Adding the optimized roaming timer configures an RSSI threshold at which the controller automatically triggers these transition requests with the Disassociation Imminent bit set, effectively compelling compliant clients to roam before their signal degrades. This combination is the Cisco-recommended approach for proactive, forced client steering on a corporate SSID.
Coverage hole detection is a reactive mechanism for identifying poor-coverage areas after the fact and does not actively steer clients in real time; additionally, disabling Disassociation Imminent removes the ability to force client transitions.
802.11k provides clients with neighbor AP reports to assist their own roaming decisions but does not instruct or force the client to move, making it insufficient on its own to meet the requirement of forcing clients to the best AP.
Concept tested: 802.11v BSS transition with optimized roaming forced steering
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/config-guide/b_wl_16_10_cg/optimized-roaming.html
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