Cisco 2800 Series Configuring - Page 15

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Cisco 2800 Series Configuring
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
1.
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6.
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
15