Cisco Systems Cisco uBR10012 manual Shutting Down the System, Required Maintenance Tools

Chapter 5 Maintaining the Cisco uBR10012 Router

Shutting Down the System

System components fall into two categories: hot-swappable components that do not require you to power off the system before replacing them, and those components that do require you to power off the system before you replace them. For example, all line cards are hot-swappable and can be replaced without powering off the system, but you must power off the system before replacing a single power entry module (PEM) or a single performance routing engine (PRE).

Caution Cisco recommends that you create a duplicate PC media card that contains the current boot software image and the current software configuration. You can use the backup card to quickly recover from a major system failure. You can also use a backup card to load a new PRE module and avoid the time-consuming reconfiguration process. For instructions to create a backup PC media card, refer to the Cisco uBR10012 Router Software Configuration Guide.

Shutting Down the System

Although most components in the Cisco uBR10012 router are hot-swappable, you may have to shut down the system under certain circumstances. Use the following procedure to shut down the system.

Step 1 Notify appropriate personnel that you plan to shut down the system and that the shutdown results in total loss of service. Appropriate personnel includes the regional alarm or network monitoring center, central office personnel, and key customers.

Step 2 Before you shut down the router, use the copy command to save any configuration changes to NVRAM, and also, if you wish, to a PC media card. Refer to the Cisco uBR10012 Universal Broadband Router Software Configuration Guide for instructions (using the copy command) at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/index.htm

Step 3 Power down the system by setting the power switch on all PEMs to the OFF (0) position.

Step 4 If you are also using the optional AC-input power shelf, also disconnect the AC power cord for each of the AC-input power modules from the power outlet.

Warning This unit has more than one power supply connection; all connections must be removed completely to completely remove power from the unit. Statement 102

Required Maintenance Tools

The only tools required to perform the maintenance procedures described in this chapter are:

•A Number 2 Phillips screwdriver

•A flat-blade screwdriver

•An electrostatic discharge (ESD) grounding strap

Cisco uBR10012 Universal Broadband Router Hardware Installation Guide

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