Dell PowerConnect W-7200 Series Reference Manual page 668

The output of this command includes the following information:
Parameter
Reason
Old Channel
New Channel
Old Power
New Power
Last Change
Command History
Introduced in ArubaOS 3.0.
Command Information
Platforms
All platforms
668 | show ap arm history
Description
This column displays one of the following code to indicate why the channel or power
change was made.
I: Interference
l
R: Radar detected
l
N: Noise exceeded
l
E: Error threshold exceeded
l
INV: Invalid Channel
l
G: Rogue AP Containment
l
M: Empty Channel
l
P+: Increase Power
l
P-: Decrease Power
l
OFF: Turn off Radio
l
ON: Turn on Radio
l
The Reason key appears at the bottom of the ARM History table.
Channel number used by the AP interface before the ARM change.
Channel number used by the AP interface after the ARM change.
Power level of the AP interface before the ARM change.
Power level of the AP interface after the ARM change.
Time elapsed since the change, in the format days:hours:minutes:seconds .
Licensing
Base operating system
Command Mode
Enable or Config mode on master or local
controllers
Dell PowerConnect W-Series ArubaOS 6.2 | Reference Guide