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Cisco LAP Connecting to Wrong WLC

3 minute read Published:

Dealing with a difficult access point that isn't connecting to the primary Wireless LAN Controller
After setting up a new Cisco Wireless LAN Controller (WLC), I decided to go ahead and setup a spare Cisco Lightweight Access Point (LAP) to connect to it. I did so by changing DHCP option 43 to point to the new WLC instead of the old one for that DHCP reservation. I plugged in the AP and… Damn, it still connected to the production WLC. I rebooted it again, and then a third time.