Cisco Systems 7609 manual Load Sharing, DC-Input Power Supply

Chapter 1 Product Overview

Cisco 7600 Internet Router Components

Figure 1-4 DC-Input Power Supply

Terminal block cover

DC power cable
terminal block
	I
	0
Power
switch	INPUT	FAN	OUTPUT
	OK	OK	FAIL
	Status LEDs
	Captive installation
	screw

16028

Load Sharing

When you install and turn on two power supplies, each power supply concurrently provides approximately half of the required power to the system. If one power supply fails, the second power supply immediately assumes full power to maintain uninterrupted system operation. Installing the second power supply enables load sharing and fault tolerance automatically; no software configuration is required.

Note For proper load-sharing operation in a redundant power supply configuration, you must install two modules in the chassis. If you fail to install two modules, you might receive spurious OUTPUT FAIL indications on the power supply.

For information about the power management feature and individual module power consumption, refer to the Cisco 7600 Series Internet Router Software Configuration Guide.

	Cisco 7609 Internet Router Installation Guide
OL-5079-04		1-11