Release Notes

885 | show ap arm split-scan-history Dell Networking W-Series ArubaOS 6.4.x| Reference Guide
show ap arm split-scan-history
show ap arm split-scan-history {ap-name <ap-name>|bssid <bssid>|ip-addr <ip-addr>}
Description
Show scanning information for a "split-scan", where ARM performs an additional scans on each channel within
a 40 MHz channel pair or 80 MHz channel set.
Syntax
Parameter Description
ap-name <ap-name>
Show scan data for an AP with a specific name.
bssid <bssid>
Show scan data for a specific Basic Service Set Identifier (BSSID) on an AP. An AP’s
BSSID is usually the AP’s MAC address.
ip-addr <ip-addr>
Show scan data for an AP with a specific IP address. Enter the IP address in dotted-
decimal format.
Usage Guidelines
Starting with ArubaOS 6.3.1, if ARM reports a high noise floor on a channel within a 40 MHz channel pair or 80
MHz channel set, ARM performs an additional 20 MHz scan on each channel within that channel pair or set, to
determine the actual noise floor of each affected channel. This allows ARM to avoid assigning the overutilized
channel, while still allowing channel assignments to the other unaffected channels in that channel pair or set.
Examples
The output of this command shows information about one split-scan performed on channel 161E.
(host)# show ap arm split-scan-history ap-name 1242-ac
Interface :wifi0
Split Scan History
------------------
Time of setup Channel scan Number of Split scans Noise Floor
------------- ------------ --------------------- -----------
2013-10-08 03:11:40 161E 4 69
Interface :wifi1
The output of this command includes the following parameters:
Parameter Description
Time of setup
Timestamp showing the date and time the scan was performed
Channel Scan
The channel pair or channel set scanned
Number of Split Scans
The number of times ARM performed an additional split scan.
Noise Floor
Noise floor recorded on the primary channel within that channel pair or channel
set.