Radio Statistics Interactive Graphs - Dell PowerConnect W-Airwave User Manual

Radio Statistics Interactive Graphs

Time-series graphs for the radio are displayed across a tabbed, dual-pane interface to show changes recorded at
every polling interval over time. Clients and Usage data are polled based on the AP's group's User Data Polling
Period. Channel, Noise, and Power are based on AP Interface Polling Period. 802.11 Counters data are based on
the AP's group's 802.11 Counters Polling Period.
You can adjust the attributes of these graphs as follows:
Drag the horizontal slider under the graphs to move the scope of all graphs between one year ago and the

current time.
Drag the vertical slider between graphs to change the relative width of each.

The Show All link displays all of the available data series.

The bar-graph icon on the upper right-hand corner of each graph opens a new window and displays all data

series for the selected graph over the last two hours, last day, last week, last month, and last year in one page.
The graphs that display depend on the AP and/or its controller.
Select the checkbox next to any metric to remove its data from the graph. Select Collapse to remove

unchecked metrics from the legend, and Show All to restore them.
The two graph panes enable simultaneous display of two different information sets, as detailed in :
Table 80 Radio Statistics Interactive Graphs Descriptions
Graph Title
Clients
Usage
Channel
Noise
Power
MAC/Phy Errors
802.11 Counters
Utilization (Dell
PowerConnect W
and Cisco WLC thin
APs on supported
firmware versions
only)
126 | Discovering, Adding, and Managing Devices
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 AOS 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
PowerConnect W-Series 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 PowerConnect W-Series 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 at
manuals.
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 7.4 Best Practices Guide in Home > Documentation for details.
support.dell.com/
Dell PowerConnect W-AirWave 7.4 | User Guide