Universal Broadband Router Hardware Installation Guide

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Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
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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