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A frame that is dropped a number of defined times will eventually
be retransmitted. A lot of retries indicated severe link problems.
Check the PHY errors for more details.
Excessive retries
This is the number of radio frames that have been retransmitted the
maximum number of times without success, and hence are
dropped.
Duplicates
If the receiver gets the same packet more than once, it means the
remote end has not received the acknowledgement packet for the
first transmission. Duplicates indicate how many copies of the
same packet that was received during the past 5 seconds.
Checksum errors
When a receiver detects the start of a frame and can read the
header but not decode the frame content, a checksum error is
generated. Many checksums errors could on one side of the link
indicates interference on that side.
PHY errors
When a receiver sees energy over a certain threshold but cannot
decode anything, it generates a PHY error. If one of the link units
(Master or Client) is subject to interference or increased noise floor
(from other equipment in the vicinity), the PHY error rate may
increase. Consider moving the equipment or change channels. The
spectrum scan tool gives useful information (see tools section in
this document or refer to Repeatit’s Deployment Guideline).
Radar PHY errors
Total number of PHY errors received by the radio card that could
be potential radar signals. If the link is subject to radar PHY errors,
consider selecting a channel outside of the radar frequency band.
Remote statistics
The figure below shows the remote statistics (the other side of
the link). The parameters are described below.
Figure 18 – System status.
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