Nortel Networks 400 4.0 Benutzerhandbuch

Chapter 19 System monitoring and troubleshooting

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All modules have power and status LEDs, as described in 

. When the modules are 

working properly, these LEDs are both solid green.

Some types of modules also have LEDs beside the jacks or for data indicators. Refer to the 
information on individual modules for a description of the function of these LEDs.

The BCM system status monitor allows you to view the status of the system LEDs on your PC. 
This status display allows you to make preliminary decisions regarding the type of intervention 
required without necessarily having to inspect the BCM hardware.

Use the procedure described in this section to monitor the operational status of systems equipped 
with the standard hard disk configuration. The standard configuration uses a single hard disk.

The procedures describe monitoring and diagnosis techniques for the standard hard disk 
configuration. 

Use the system status monitor from Element Manager to determine the operational status of the 
hard disk. Alternatively, examine the LED display panel on the front of the base function tray (see 

The system status monitor indicator shows hard disk access activity. A flashing green indicator 
signifies normal disk access activity. 

Table 77   Module power and status LED states

Indicates state 
of system 
power.

OK

N/A

A minimum of 1 PS 
needs attention

N/A

Indicates 
condition of 
system status

All monitored 
services are 
functioning

In startup/shutdown 
mode

N/A

Not all services are 
working

Note: If you are using the Element Manager system status monitor function, ensure the 
hard disk monitoring configuration settings are set correctly.

Note: If the hard disk fails completely in a standard configuration, the system either fails 
to respond or performs a software shutdown. Replace the hard disk and perform a backup 
using the backup and restore utility (BRU). See 

.