300-360 Question #42: Real Exam Question with Answer & Explanation

The correct answer is D: re-anchor roamed voice clients. In an N+N redundant deployment where APs are 'salt and peppered' (interleaved) across controllers, physically adjacent APs are registered to different controllers. When a voice client roams from an AP on Controller A to a nearby AP on Controller B, a mobility tunnel (EoIP tunnel)

Question

A customer has deployed an N+N redundant wireless infrastructure. In this deployment, the access points have been salt and peppered between controllers. What configuration would be necessary to cut down on the use of mobility tunnels for voice clients?

Options

Amobility anchor
BKIS based CAC
Cmedia session snooping
Dre-anchor roamed voice clients

Explanation

In an N+N redundant deployment where APs are 'salt and peppered' (interleaved) across controllers, physically adjacent APs are registered to different controllers. When a voice client roams from an AP on Controller A to a nearby AP on Controller B, a mobility tunnel (EoIP tunnel) is created between the two controllers to maintain session continuity - the client keeps its original IP and anchor controller. Over time, this creates many tunnels that add latency and overhead, degrading voice quality. Enabling 're-anchor roamed voice clients' causes the system to re-anchor the client to the new controller after roaming, eliminating the tunnel and giving the client a local connection. This is the correct solution to reduce mobility tunnel usage in this specific topology.

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