Allen-Bradley 1783-WAPAK9, Руководство пользователя

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262 Rockwell Automation Publication 1783-UM006A-EN-P - May 2014
Chapter 7 Configuring Radio Settings
The 1, 2, 3, and 4 options designate blocks of channels:
•
1 - Specifies frequencies 5.150…5.250 GHz.
This group of frequencies is also known as the UNII-1 band.
•
2 - Specifies frequencies 5.250…5.350 GHz.
This group of frequencies is also known as the UNII-2 band.
•
3 - Specifies frequencies 5.470…5.725 GHz.
•
4 - Specifies frequencies 5.725…5.825 GHz.
This group of frequencies is also known as the UNII-3 band.
This example shows how to prevent the access point from selecting frequencies
5.150…5.350 GHz during DFS:
ap(config-if)# dfs band 1 2 block
This example shows how to unblock frequencies 5.150…5.350 for DFS:
ap(config-if)# no dfs band 1 2 block
This example shows how to unblock all frequencies for DFS:
ap(config-if)# no dfs band block
Setting the 802.11n Guard
Interval The 802.11n guard interval is the period in nanoseconds between packets. Two
settings are available: short (400 ns) and long (800 ns).
Beginning in privileged EXEC mode, follow these steps to set the 802.11n guard
interval.
1.
Enter global configuration mode.
configure terminal
2.
Enter 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.
interface dot11radio {0 | 1}
3.
Enter a guard interval.
•
any
permits either the short (400 ns) or long (800 ns) guard interval
•
long
permits only the long (800 ns) guard interval
guard-interval {any | long}
4.
Return to privileged EXEC mode.
end