Clearing History Alarms; Using Loopbacks - 3Com 3C63100-AC-C - PathBuilder S600 Bridge/router Reference Manual

Using Loopbacks

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.
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 S600, follow these
steps:
1 From the Main menu, select [3] Fault Management to display the Fault
Management menu shown earlier in Figure 145.
2 Select [5] Loopback from the Fault Management menu to display the Loopback
menu, shown in Figure 148.
Figure 148 Loopback Menu
3 Select the card type for which you want to conduct the loopback.
If you select a DS1/E1 UNI or a CBR DSX/E1 card, you must configure the loopback
on a per-port basis. After you select the card type, a port selection menu appears.
In order to access the Loopback menu for that card, you must select a port from
this menu
The Loopback menu for the selected card appears. Figure 149 shows the
Loopback menu for the DS3 UNI card.
Using Loopbacks 195