2-7
Cisco7609 Internet Router Installation Guide
OL-5079-04
Chapter2 Preparing for Installation
Site Requirements
Table 2 -4 provides a sample calculation of power and heat dissipation for the
following switch configuration:
•Cisco 7609 Internet Router chassis (including AC-input power supplies)
•Two WS-X6K-S2U-MSFC2 supervisor engines
•One Switch Fabric Module
•Two 4-port OC-12 POS modules
•Two 8-port OC-3 POS modules
Table2-4 Sample Calculation
Model Number/
Module Type
AC-Input
Power
(Watts)
DC-Output
Power
(Watts)
Heat Diss.
(BTU/HR)
Input Current
90 VAC
(Amps)
120 VAC
(Amps)
180 VAC
(Amps)
240 VAC
(Amps)
Cisco 7609 Internet Router
chassis (with fans)
124 50 422 1.37 1.03 0.69 0.52
WS-X6K-S2U-MSFC2 322 258 1098 3.58 2.68 1.78 1.34
WS-C6500-SFM
Switch Fabric Module
146 117 500 1.63 1.22 0.81 0.61
OSM-4OC12-POS-MM
4-port OC-12 module
502 402 1714 5.58 4.18 2.78 2.10
OSM-8OC3-POS-MM
8-port OC-3 module
374 300 1280 4.16 3.12 2.08 1.56
Total 1468 1127 5014 16.32 12.23 8.14 6.13