Recent Arm Events Log - Dell PowerConnect W-AirWave 7.6 User Manual

Table 78:
Radio Statistics Interactive Graphs Descriptions
Graph Title
Clients
Usage
Channel
Noise
Power
MAC/Phy Errors
802.11 Counters
Utilization (Aruba,
Dell PowerConnect
W,and Cisco WLC
thin APs on
supported
firmware versions
only)
Figure 85:
Radio Statistics Interactive Graphs Illustration – Bandwidth and 802.11 Counters displayed

Recent ARM Events Log

If this radio references an active and enabled ARM profile, and if your AirWave is enabled as a trap host (see the
Dell PowerConnect W-AirWave 7.6 Best Practices Guide for instructions), ARM-initiated events such as automatic
channel changes, power changes, and mode changes are displayed in the ARM Events table with the original and
Dell PowerConnect W-AirWave 7.6 | User Guide
Description
A line graph that displays the maximum users associated to the corresponding radio at polling
intervals over the time range set in the slider. Select Show All for other metrics such as average users
and max users for various individual devices.
An area graph displaying the average bandwidth in each direction for the radio. Select Show All for
other metrics such as max bandwidth in and out, average and max mesh/overhead or overhead
bandwidth, and average/max Enet0.
An area graph that displays the channel changes (if any) of the radio over time. Frequent, regular
channel changes on an Dell or Cisco WLC AP radio usually indicate that the Adaptive Radio
Management feature (ARM) in ArubaOS is compensating for high noise levels from interfering devices.
An area graph that displays signal interference (noise floor) levels in units of dBm. Noise from
interfering devices above your AP's noise threshold can result in dropped packets. For ARM-enabled
Dell APs, crossing the noise threshold triggers an automatic channel change.
A line graph that displays the average and maximum radio transmit power, between 0 and 30 dBm,
over the time range set in the slider. You can adjust the transmit power manually in the APs/Devices >
Manage page for this radio's AP, or enable ARM on Dell APs to dynamically adjust the power toward
your acceptable Coverage Index as needed. For more information, see the Adaptive Radio
Management chapter of the Dell PowerConnect W-Series ArubaOS User Guide.
A line graph displaying the frame reception rate, physical layer error rate (resulting from poor signal
reception or broken antennas), and the data link (MAC) layer (corrupt frames, driver decoding issues)
for the radio.
A line graph that displays statistics such as frame rate, fragment rate, retry rate, duplicate frame rate,
and other metrics tracked by 802.11 counters.
Displays max and average percentages on this radio for busy, interfering receiving and transmitting
signals. Special configuration on the controller is required to enable this data. Consult the Dell
PowerConnect W-AirWave 7.6 Best Practices Guide in Home > Documentation for details.
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