Cisco Systems 0L-11350-01 Blocking Channels from DFS Selection

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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-11350-01
Chapter6 Configuring Radio Settings
Configuring Radio Channel Settings
Blocking Channels from DFS Selection
If your regulatory domain limits the channels that you can use in specific locations--for example, indoors
or outdoors--you can block groups of channels to prevent the access point from selecting them when DFS
is enabled. Use this configuration interface command to block groups of channels from DFS selection:
[no] dfs band [1] [2] [3] [4] block
The 1, 2, 3, and 4 options designate blocks of channels:
•1—Specifies frequencies 5.150 to 5.250 GHz. This group of frequencies is also known as the UNII-1
band.
•2—Specifies frequencies 5.250 to 5.350 GHz. This group of frequencies is also known as the UNII-2
band.
•3—Specifies frequencies 5.470 to 5.725 GHz.
•4—Specifies frequencies 5.725 to 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 to 5.350 GHz
during DFS:
ap(config-if)# dfs band 1 2 block
This example shows how to unblock frequencies 5.150 to 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