Replacing Upper or Lower Fan Tray
â–€ Determining Whether a Fan Tray Needs Replacing
â–„ ASR 5000 Installation Guide
Determining Whether a Fan Tray Needs Replacing
The system has several ways to indicate a fan tray failure. The first indicator is that the Status LED on the System
Resource Card (SRC) turns red to indicate the failure of a chassis component.
If you see a red Status LED on the SRC, you can determine whether it is a fan tray failure via the CLI or by checking
the Simple Network Management Protocol (SNMP) traps.
Using the CLI
To monitor chassis temperature and fan speed, issue the following CLI command in the Exec mode:
show fans
The following is a sample output for this command:
Upper Fan Controller: State=All Running Speed=Normal Temp=20 (C)
Lower Fan Controller: State=All Running Speed=Normal Temp=20 (C)
Using SNMP Traps and MIB Objects
The system supports SNMP traps that are triggered for conditions that may indicate the need to change the fan tray. The
system provides the traps listed in the table below.
Table 82. SNMP Traps for Fan Trays
One or more fans have failed on the indicated fan controller.
A fan tray has been removed.
The physical location of the fan controller, upper or lower.
The type of failure experienced:
0: There are no errors. This is the normal operating condition.
2: Multiple fans on the fan tray have failed.
4: A single fan on the fan tray has failed.
8: The redundant fan controller on the fan tray did not respond to the heartbeat signal.
10: An error has occurred on the primary fan controller bus for the fan tray.
20: An error has occurred on the redundant fan controller bus for the fan tray.
40: An inter-bus communication error was experienced between the primary and redundant fan
controllers on the fan tray.
80: The fan tray is not present.
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