WESM zl Management and Configuration Guide WT.01.03 and greater

12-14
Wireless Network Management
Monitoring the Wireless Network
The Station Properties section displays the same information that is listed on
the Device Information > Wireless Stations screen, including the station’s MAC
and IP address. However, you can also see whether the station supports QoS
capabilities such as Voice and WMM.
You can use the Traffic section to monitor the quality and performance of the
connection. The Web browser interface reports speed in terms of packets per
second, total throughput in Mbps, and average speed in Mbps. The Web
browser interface further breaks down statistics into received and transmitted
traffic.
Note that these statistics do not include retry overhead, which means that in
a network with significant congestion or interference, a user might perceive
the connection to be slower than these statistics would seem to indicate. The
sections below can help you monitor that aspect of the wireless connection.
The RF Status section displays the status of the radio medium:
■ Avg Station Signal (dBm)—average signal level detected for this station
■ Avg Station Noise (dBm)—average background noise for this station
■ Avg Station SNR (dBm)—average SNR for this station
In the Errors section, the Web browser interface reports the total number of
error packets:
■ Avg Number of Retries—average number of retries necessary to success-
fully transmit a packet to this station
A high value (over 10 or 20 percent) may indicate excessive congestion
or interference from another wireless device.
■ % Gave Up Pkts—number of packets that the Wireless Edge Services zl
Module never successfully transmitted to this station
■ % of Undecipherable Pkts—percentage of packets received from this sta-
tion that could not be deciphered
A high percentage might indicate that someone is attempting to guess a
static WEP key or WPA/WPA2 PSK.
The statistics in black apply to the last 30 seconds, giving you a snapshot of
current performance. The statistics in blue show the station’s average perfor-
mance over the last hour.