Setting The 802.11N Guard Interval; Enabling And Disabling World Mode - Cisco 1941W Configuration Manual
Cisco 3900 series, cisco 2900 series,
cisco 1900 series
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Also See for 1941W:
- Hardware installation manual (102 pages) ,
- Installing and upgrading (24 pages)
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Chapter
Configuring Radio Settings
Setting the 802.11n Guard Interval
The 802.11n guard interval is the period in nanoseconds between packets. Two settings are available:
short (400ns) and long (800ns).
To to set the 802.11n guard interval, follow these steps, beginning in privileged EXEC mode.
SUMMARY STEPS
1.
2.
3.
4.
5.
DETAILED STEPS
Command
Step 1
configure terminal
Step 2
interface dot11radio {0 | 1}
Step 3
guard-interval {any | long}
Step 4
end
Step 5
copy running-config
startup-config
Enabling and Disabling World Mode
You can configure the wireless device to support 802.11d world mode, Cisco legacy world mode, or
world mode roaming. When you enable world mode, the wireless device 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. Cisco client devices detect whether the wireless device is using 802.11d or Cisco legacy
world mode and automatically use the world mode that matches the mode used by the wireless device.
You can also configure world mode to be always on. In this configuration, the access point essentially
roams between countries and changes its settings as required.
World mode is disabled by default.
To enable world mode, follow these steps, beginning in privileged EXEC mode.
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
configure terminal
interface dot11radio {0 | 1}
guard-interval {any | long}
end
copy running-config startup-config
Purpose
Enters global configuration mode.
Enters interface configuration mode for the radio interface.The
802.11n 2.4-GHz radio is radio 0.
The 802.11n 5-GHz radio is radio 1.
Specifies a guard interval.
any allows either the short (400ns) or long (800ns) guard
•
interval.
•
long allows only the long (800ns) guard interval.
Returns to privileged EXEC mode.
(Optional) Saves your entries in the configuration file.
Enabling and Disabling World Mode
279
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