Black Box LW0050A Manual page 45

CHAPTER 3: Using the Local Terminal for Unit Setup and Management
• Power Saving Aged – Total number of buffered frames that were aged out.
This counter counts the number of frames dropped by the Access Point
because a station did not poll those frames for a long period of time.
• Power Saving Free Entries – The current number of free buffers (one frame
each) available for power-save management. These buffers hold messages for
stations that are currently in Power Save mode.
• Total Received Frames – The number of frames received from the wireless
media. The count includes data and control frames (including beacons
received from Access Points).
• Total Received Data Frames – The number of data frames received from the
wireless media.
• Total Received Fragments – The total number of frames received, including
data, control, and duplicate data frames (see the Duplicates and Dwell
Timeouts parameter below).
• Bad Fragments Received – The number of frames received from the WLAN
with errors.
• Duplicates and Dwell Timeouts – When a unit receives a frame, it sends an
acknowledge for it. If the acknowledge is lost, it receives a copy of the same
frame. Although duplicate frames are counted, only the first copy of the frame
is forwarded to the UTP port.
3.6.1.3 D R
ISPLAY ATE
The rate counters display the number of frames transmitted in each data rate since
the last reset. The rate counters show the number of frames transmitted at 1 Mbps,
2 Mbps, 3 Mbps, and the number of retransmitted frames (Ret). The counters
display the rate of packets transmitted for the first time only (without
retransmission).
Counters for Access Points are displayed for all associated stations,
indicated by their MAC address. Rate counters for stations are
displayed with no indication of MAC address.
Checking the rate counters is the best way to determine which data rate is the
optimal data rate for the unit. We recommend restricting the Maximum Data Rate
for each unit according to the Rate counters (see also Section 3.4.3). The Ret
counter displays the number of frames that had to be retransmitted; however, it
does not count the number of retransmissions that actually accrued.
C
OUNTERS
NOTE
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