Black Box LW0050A Manual page 44

PRO 11 SERIES WIRELESS ETHERNET
acknowledge (there are no retransmissions for control frames). If the unit has
retransmitted a frame for the maximum number of retransmissions, it will stop re-
transmitting the frame and drop this frame.
Available Counters:
• Total Transmitted Frames – The number of frames transmitted to the wireless
media. The count includes the first transmission of data frames (without
retransmissions), and also the number of control and management frames.
Notice that an Access Point continuously transmits a control frame called
beacon in every frequency to which it hops, in order to publish its existence
and keep its associated stations synchronized. Thus, the total transmitted
frames counter will get high values even if the Access Point is not connected to
an active LAN.
• Total Transmitted Frames (Bridge) – The total number of data frames
transmitted to the wireless media (that is, frames that were received from the
UTP port and forwarded to the internal bridge, which decided to transmit
them to the wireless media).
• Frames Dropped (too many retries) – The number of frames which have been
dropped because they were retransmitted for the maximum number of
allowed retransmissions and weren't acknowledged.
• Total Transmitted Fragments – The total number of transmitted frames. The
count includes data, control, and management frames, and also the number of
retransmissions of data frames (for example, if the same data frame is
retransmitted ten times, the count will increase ten times).
• Total Retransmitted Fragments – The total number of retransmissions of data
frames (for example, if the same data frame is retransmitted ten times, then
the count will increase ten times). In a point-to-point application, this counter
should be about the same as the number of bad fragments received on the
other side.
• Total Tx Errors – The number of transmit errors that have occurred.
Currently this counter also includes normal situations where a fragment has
not been transmitted because the dwell time has elapsed.
• Internally Discarded – The number of frames that the Access Point discarded
because of a buffer overflow. Frame discard will occur mainly when the
wireless conditions are bad, and the unit is busy re-transmitting frames and
doesn't have time for handling new frames.
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