Chapter2 Preparing for Installation
Site Requirements
2-2
Cisco7609 Internet Router Installation Guide
OL-5079-04
Site Requirements
This section provides site power requirements for the Cisco 7609 Internet Rout er.
You should verify the site power prior to installing the switch. Power
requirements vary for each switch; ensure that you verify the sit e power for the
type of switch you are installing.
For EMI recommendations, refer to the Site Preparation and Safety Guide.

Environmental Requirements

Insure adequate spacing between racks using the information in Table 2-1 . Keep
all of the vents clear of obstructions, including dust and forei gn conductive
material, and away from the exhaust ports of other equipment.
Heat dissipation is an important consideration for sizing the air-conditioning
requirements for an installation. The power and heat associated with a
Cisco 7609 Internet Router varies based upon these considerations:
•Power supply type
•Module types and quantities
•Average traffic levels
Unless otherwise noted, the information in Table 2 -2 and Tab le 2-3 assumes
worst-case conditions (with GBICs and port adapters installed, if applicable).
Typical numbers are approximately 30 percent below the numbers listed here. See
Table 2 -4 for a sample calculation of a switch configuration.
Table2-1 Chassis Airfow Requirements
Chassis Model Airflow Intake
Airflow
Exhaust
Air Filter
Option
Minimum
Clearance
(walls)
Minimum
Horizontal
Separation
OSR-7609
(Figure 1-2)
Front, rear Front, rear, left
side, right side
No 6 in (15 cm) 12 in (30.5)