Cambium Networks PMP 450 AP, Configuration Manual

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Chapter 3: Operation System statistics
Page
3-41
Xmt LT Result This radio transmitted its link test results to the remote radio under
test. When the remote radio initiates a link test, this radio must send its
results to the remote radio for display there.
Frame Too Big This statistic indicates the number of packets received and processed by the
radios which were greater than max packet size 1700 bytes.
Bad Acknowledgment This statistic indicates the number of packets received as bad
acknowledgment. It is for engineering use only.
Bad Fragment This statistic indicates number of fragments tagged internally as bad. It is for
engineering use only.
VC Clear Error Count This statistic indicates number of times VC clear failed.
Rx No Buffer Count Currently unused
Scheduler Error This error is incremented when the scheduler cannot send or get scheduled
to send a packet. It is also called as “VC Error”.
Transmit Ring Error This is a state that records when Canopy’s MAC Transmit Ring Error. One or
more of these will cause the session to drop and be re-established. That
static should be zero. If you are seeing this statistic increment, please
contact Cambium support.
TDD Slips TDD Slips indicate that the 450m AP processer is heavily loaded and could
lead to buffer discards.
Viewing list of Registration Failures statistics
SM Registration Failures page of AP
The SM Registration Failures tab identifies SMs that have recently attempted and failed to register to
this AP. With its time stamps, these instances may suggest that a new or transient source of
interference exists.
Table 129 SM Registration Failures page attributes - AP
Attribute Meaning
Status 17 Flag 0 No response was received from the AAA server and hence SM is trying to
send a session request again.