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Configuring Radio Settings on an Access Point

Enabling and Disabling Short Radio Preambles on an Access Point

Perform this task to enable or disable short radio preambles.

Radio Preambles

The radio preamble (sometimes called a header) is a section of data at the head of a packet that contains

information that the AP and client devices need when sending and receiving packets. You can set the

radio preamble to long or short:

•

You cannot configure short or long radio preambles on the 5-GHz radio.

Note

SUMMARY STEPS

Short—A short preamble improves throughput performance. Cisco Aironet Wireless LAN Client

Adapters support short preambles. Early models of Cisco Aironet's Wireless LAN Adapter (PC4800

and PC4800A) require long preambles.

Long—A long preamble ensures compatibility between the AP and all early models of Cisco

Aironet Wireless LAN Adapters (PC4800 and PC4800A). If these client devices do not associate to

your access points, you should use short preambles.

enable

configure terminal

interface dot11Radio interface

preamble-short

end

copy running-config startup-config

How to Configure Radio Settings on an Access Point