
117379-A Rev. A
1-1
Chapter 1
Introduction
This chapter describes how to prevent router problems and prepare to
troubleshoot.
Preventing Problems
The following sections offer tips on how to prevent the most common errors that
occur:
• “Reading the Release Notes and Rele
vant Documentation”
• “Minimizing Disr
uption When Installing New Software”
• “Selecting the Pr
oper Tool for Configuring a Router”
• “Sa
ving Your Configuration Changes”
• “Bac
king Up Your Files”
• “Maintaining Consistent F
iles in Multiple Flash Memory Cards”
• “Handling Flash Memor
y Cards to Prevent Static Damage”
• “Responding to a F
ailed prom Command”
Topic Page
Pre
venting Problems 1-1
Preparing to Troubleshoot 1-4
Documenting Each Step 1-23
Performing One Corrective Task at a Time 1-24
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