3Com 3C63400-3AC-C - PathBuilder S700 Switch, Справочное руководство

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220 C
HAPTER
6: P
ATH
B
UILDER
S700 D
IAGNOSTICS AND
P
ERFORMANCE
M
ONITORING
Figure 165 Display History Alarm Screen
If the history file cannot be displayed on one page, the Display History Alarm
screen will include a prompt to press [N] for the next page and press [P] for the
previous page.
3 Use the print screen or other printing feature of your NMS station to print out
each page of the history file.
4 Compare the printouts to your most previous records to see if there are any
obvious trends, such as more frequent alarms of a certain type, which might
require troubleshooting.
Clearing History Alarms
After you have printed the alarm history, you should clear the alarms so that they
will no longer take up space in the alarm history file. To do this, follow these steps:
1 Return to the Fault Management menu.
2 Select [4] Clear History Alarms . The following prompt appears:
Do you want to clear history alarms (Y/N) [N]?
3 Enter
y
to clear the history alarms.
Using Loopbacks
Loopbacks allow you to check circuit continuity between one point and another.
You should use the PathBuilder loopback feature to check continuity to the
nearest point first, and if the circuit is valid to that point, then loop to the next
point. If a circuit has been compromised, isolating the problem between two
points should help you identify and resolve the problem.
To access the loopback modes supported by the PathBuilder S700, follow these
steps:
1 From the Main menu, select [3] Fault Management to display the Fault
Management menu shown earlier in Figure 163.
2 Select [5] Loopback from the Fault Management menu to display the Loopback
menu, shown in Figure 166.