Cisco Cisco Aironet 3800i Access Point Guía De Instalación

address and DNS information from a DHCP server, it contacts the DNS to resolve 
CISCO-CAPWAP-CONTROLLER.localdomain. When the DNS sends a list of controller IP 
addresses, the access point sends discovery requests to the controllers.

After you have mounted the access point, follow these steps to deploy it on the wireless network:

Connect and power up the access point.

Observe the access point LED (for LED descriptions, see 

When you power up the access point, it begins a power-up sequence that you can verify by 
observing the access point LED. If the power-up sequence is successful, the discovery and join 
process begins. During this process, the LED blinks sequentially green, red, and off. When the 
access point has joined a controller, the LED is chirping green if no clients are associated or 
green if one or more clients are associated.

If the LED is not on, the access point is most likely not receiving power.

If the LED blinks sequentially for more than 5 minutes, the access point is unable to find its 
primary, secondary, and tertiary Cisco wireless LAN controller. Check the connection 
between the access point and the Cisco wireless LAN controller, and be sure the access point 
and the Cisco wireless LAN controller are either on the same subnet or that the access point 
has a route back to its primary, secondary, and tertiary Cisco wireless LAN controller. Also, 
if the access point is not on the same subnet as the Cisco wireless LAN controller, be sure that 
there is a properly configured DHCP server on the same subnet as the access point. See the 

 for additional information.

Reconfigure the Cisco wireless LAN controller so that it is not the Master. 

A Master Cisco wireless LAN controller should be used only for configuring access 
points and not in a working network.