Cisco Systems 1200 Manual De Usuario

Because the access point is a radio device, it is susceptible to interference that can reduce throughput 
and range. Follow these basic guidelines to ensure the best possible performance:

Ensure that a site survey has been performed to determine the optimum placement of access points.

For lightweight access points, check the latest release notes to ensure that your controller software 
version supports the access points to be installed. You can find the controller release notes by 
selecting your controller under Wireless LAN Controllers at this URL:

Ensure that access points are not mounted closer than 20 cm (7.9 in) from the body of all persons.

Do not mount the access point within 3 ft (91.4 cm) of metal obstructions. 

Install the access point away from microwave ovens. Microwave ovens operate on the same 
frequency as the access point and can cause signal interference.

Do not mount the access point outside of buildings.

Do not mount the access points on building perimeter walls unless outside coverage is desired.

The lightweight access point supports these controller discovery processes:

DHCP server discovery—Uses DHCP Option 43 to provide controller IP addresses to the access 
points. Cisco switches support a DHCP server option. For additional information, refer to the 

DNS server discovery—The access point uses the name CISCO-LWAPP-CONTROLLER.<local 
domain> to discover the controller IP addresses from a DNS server. Where <local domain> is the 
access point domain name.

Locally stored controller IP addresses—If the access point was previously associated to a controller, 
the IP addresses of the primary, secondary, and tertiary controllers are stored in the access point 
non-volitile memory. The process of storing controller IP addresses in access points for later 
deployment is called priming the access point. For additional information, refer to the 

.

You can also manually configure controller information using CLI commands on new 
(out-of-the-box) access points that are not connected to a controller. For additional information refer 
to the 

.

Cisco recommends that you configure a DHCP server with Option 43 to provide the controller IP 
addresses to your access points. Cisco switches provide a DHCP server option that is typically used for 
this purpose.