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     block
The 1, 2, 3, and 4 options designate blocks of channels:
â¢1-Specifies frequencies 5.150 to 5.250 GHz. This group of frequencies is also known as the UNII-1 band.
â¢2-Specifies frequencies 5.250 to 5.350 GHz. This group of frequencies is also known as the UNII-2 band.
â¢3-Specifies frequencies 5.470 to 5.725 GHz.
â¢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:
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
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