How does the optimized roaming function operate in a WLC implementation?

Optimized Roaming forces clients to roam sooner by monitoring their RSSI. When a client’s RSSI drops below the configured threshold (or packet loss exceeds a set value), the AP immediately sends a disassociation frame, compelling the client to search for a stronger AP and improving overall WLAN performance.

B – Feature is local to WLC/AP, no external integration required.

C – Uses RSSI/packet loss, not peer-to-peer beacons, for location.

D – No static load balancing; clients make dynamic roam decisions.

1. Cisco Optimized Roaming Deployment Guide, v1.2, p. 3 “AP disassociates clients below RSSI threshold.”

2. Cisco Catalyst 9800 Series Configuration Guide, “Configure Optimized Roaming,” Sec. “client-disconnect-threshold,” IOS XE 17.9.