5-14 61200290L1-1GSection 5, Statistics MX2800 M13 Multiplexer User Manual3. PROTECTION SWITCH STATISTICSThis menu provides statistics regarding protection switches. The number of protection switches that occurwithin the particular time period are listed. See Figure 5-13 on page 5-14.Figure 5-13. Protection Switch Statistics MenuPerformance ParametersView performance parameter information for the network in one of the three time period selections. Infor-mation in these fields is for the given time period since the last reset. When viewing the 24-Hour Historystatistics screen, use the L EFT and R IGHT arrow keys to scroll through all 96 15-minute intervals. Clearingprotection switch alarm counts will clear the Excessive Switch State, if active.Alarm LogThis menu provides a list of the last 200 alarms that have occurred on the MX2800. When the alarm logbecomes full, new alarms replace the oldest alarms in a first-in, first-out sequence.The alarm log is periodically stored in nonvolatile memory. Once every minute, if an alarm has beenrecorded or if the alarm log has been reset since the last time it was saved, then the alarm log and systemconfiguration are saved to nonvolatile memory. Both the alarm log and system configuration are savedmanually when the user executes the Save Configuration & Alarm Log menu function in the Configurationmenu. Each time the system powers up, the alarm log is retrieved from non-volatile memory.A Reset Alarm Log function is accessible from the alarm log menu. This option clears the alarm log. SeeFigure 5-14 on page 5-15.
