Extreme Networks Summit WM3000 Series Reference Manual page 52

Controller Information
5 The RF Status section displays the following read-only RF radio signal information for associated
APs and radios:
Average Signal
Average Noise
Average SNR (dB)
6 Refer to the Errors field for read-only packet error and loss information for associated Access Points
and radios:
Average Number of
Retries
% Gave Up Pkts
% Non-decryptable
Pkts
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Displays the average signal strength for MUs associated with the
controller over the last 30 seconds and 1 hour. Typically, the higher the
signal, the closer the MU.
Displays the average RF noise for all MUs associated with the selected
WLAN. MU noise for the last 30 seconds is displayed in black and the
number in blue represents MU noise for the last hour. If MU noise is
excessive, consider moving the MU closer to the Access Point, or in area
with less conflicting network traffic. Excessive noise may also be an
indication of network interference.
Signal to Noise Ratio
Displays the average
with the controller. The SNR is an indication of overall RF performance
on the wireless network.
Displays the average number of retries for all MUs associated with the
controller. The number in black represents average retries for the last 30
seconds and the number in blue represents average retries for the last
hour.
If the Average Number of Retries starts increasing this indicates that MUs
are not getting a good link back to the AP.
Displays the percentage of packets which the controller gave up on for all
MUs associated with the controller. The number in black represents this
statistic for the last 30 seconds and the number in blue represents this
statistic for the last hour.
If this field displays a non-zero number it indicates bad links causing
packets to the MUs
Displays the percentage of undecryptable packets for all MUs associated
with the controller. The number in black represents undecryptable pkts
for the last 30 seconds and the number in blue represents undecryptable
pkts for the last hour.
If this field displays a non-zero number it can indicate outside intrusion
into the network or an MU using incorrect cryptography such as a a
misconfigured static key.
(SNR) for all MUs associated
Summit WM3000 Series Controller System Reference Guide