Cisco IPS 7.1 Installation Guide download pdf (Page 48)

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Cisco Intrusion Prevention System Appliance Hardware Installation Guide for IPS 7.1

OL-24002-01

Chapter 2 Preparing the Appliance for Installation

General Site Requirements

Power Supply Considerations

The IPS 4270-20 has an AC power supply. The IPS 4345, IPS 4360, IPS 4510, and IPS 4520 have either

an AC or DC power supply.

Follow these guidelines for power supplies:

• Check the power at the site before installing the chassis to ensure that the power is free of spikes

and noise. Install a power conditioner if necessary, to ensure proper voltages and power levels in the

source voltage.

• Install proper grounding for the site to avoid damage from lightning and power surges.

• The following applies to a chassis equipped with an AC-input power supply:

–

The chassis does not have a user-selectable operating range. Refer to the label on the chassis for

the correct AC-input power requirement.

–

Several types of AC-input power supply cords are available; make sure you have the correct type

for your site.

–

Install a UPS for your site.

–

Install proper site-grounding facilities to guard against damage from lightning or power surges.

Configuring Equipment Racks

The following tips help you plan an acceptable equipment rack configuration:

• Enclosed racks must have adequate ventilation. Ensure that the rack is not overly congested, because

each chassis generates heat. An enclosed rack should have louvered sides and a fan to provide

cooling air.

• When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or

exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated

all the way into the rack.

• In an enclosed rack with a ventilation fan in the top, excessive heat generated by equipment near the

bottom of the rack can be drawn upward and into the intake ports of the equipment above it in the

rack. Ensure that you provide adequate ventilation for equipment at the bottom of the rack.

• Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through

the chassis. The best placement of the baffles depends on the airflow patterns in the rack.

Experiment with different arrangements to position the baffles effectively.

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Cisco IPS 7.1 Installation Guide Page 48