Enabling And Disabling World-Mode; Disabling And Enabling Short Radio Preambles - Cisco Aironet 1100 Series Installation And Configuration Manual

Chapter 7 Configuring Radio Settings
Command
Step 4 end
Step 5
copy running-config
startup-config

Enabling and Disabling World-Mode

When you enable world mode, the access point adds channel carrier set information to its beacon. Client
devices with world mode enabled receive the carrier set information and adjust their settings
automatically. For example, a client device used primarily in Japan could rely on world mode to adjust
its channel and power settings automatically when it travels to Italy and joins a network there. World
mode is disabled by default.
Beginning in privileged EXEC mode, follow these steps to enable world mode:
Command
Step 1 configure terminal
Step 2 interface dot11radio 0
Step 3
world-mode
Step 4 end
Step 5 copy running-config startup-config (Optional) Save your entries in the configuration file.
Use the no form of the command to disable world mode.
Aironet extensions must be enabled for world mode operation. Aironet extensions are enabled by default.
Note

Disabling and Enabling Short 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 access point and client devices need when sending and receiving packets. You can
set the radio preamble to long or short:
•
•
Short preambles are enabled by default.
OL-2851-01
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 access point 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.
Purpose
Return to privileged EXEC mode.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enter interface configuration mode for the radio interface.
Enable world mode.
Return to privileged EXEC mode.
Cisco Aironet 1100 Series Access Point Installation and Configuration Guide

Enabling and Disabling World-Mode

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