Replacing A Fan Unit; Before You Begin - Nokia IP561 Installation Manual

Replacing Other Components
4. Click Apply.
5. Click Save.
You can use following steps in CLI to enable or disable hardware acceleration.
1. Enter the CLI.
2. Enter the VPN configuration mode.
3. Use follwing command to enable or disable the card.
vpn-accel on|off
For more information about how to use the CLI, see the Nokia IPSO-VN Command-Line
Interface Reference Guide.
You can also monitor Nokia encryption accelerator card with Network Voyager. For more
information about how to access Network Voyager and locating relevant reference materials, see
the Nokia IPSO-VN User's Guide.

Replacing a Fan Unit

The 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 can provide proper airflow for
a short time even if an individual fan fails.
Before you replace a fan unit, you must first turn off power to the appliance.

Before You Begin

To replace a fan unit, you need:
Physical access to the IP561 appliance
Replacement fan unit kit and appropriate supplement
A Phillips-head screwdriver
Caution
Components inside the appliance can overheat if they are not cooled even for a short
period of time. If you are replacing a failed fan unit, you must completely remove power
to the appliance.
To replace a fan unit
1. Use Nokia Network Voyager or the command-line interface (CLI) to perform an orderly
shutdown of the IP561.
For information about how to access Network Voyager and the related reference materials,
see
2. Turn off power to the IP561 appliance.
76
"Using Nokia Network Voyager" on page 40.
Nokia IP561 Security Platform Installation Guide