Nokia IP2255 - Security Appliance, Installation Manual

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1
Overview
30 Nokia IP2255 Security Platform Installation Guide
The location and meaning of the status LEDs for the installed NICs is
described in
Chapter 4, “Connecting to the Network Interface Cards.”
Fan Unit
The Nokia IP2255 appliance fan unit is a single unit made up of four
individual fans to provide the air flow required to maintain a proper operating
temperature. The fan unit provides N + 1 cooling, so it can provide proper
airflow even if an individual fan fails.
Caution
If an individual fan fails, replace the fan unit as soon as possible. For
information about how to replace a failed fan unit, see
“Replacing the
Fan Unit” on page 96.
The system status LEDs on the front panel of the appliance show the status of
the fan unit. For more information about the system status LEDs, see
“System
Status LEDs” on page 29.
Blinking yellow Appliance is experiencing a
temperature problem.
Solid red One or more fans are not
operating properly or one of the
connected power supplies is
experiencing a problem.
Table 3 shows the system status LEDs and describes their meaning.
Table 3 System Status LEDs
Status indicator Meaning Symbol
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