SOFTWARE AND HARDWARE TOOLS Chapter 19 Network Troubleshooting Spring, 2013

Narrowing Down the Problem  Did you check the super simple stuff?  Is hardware or software causing the problem?  Is it a workstation or server problem?  Which segments of the network are affected?

Super Simple Stuff (SSS)  Check to ensure…  Look for…  Check all…  Look for…

Hardware or Software?  Usually involves three things: 

Workstation or Server Problem?  How to check:  Check which segments are affected:

Cabling Issues (what to look for)  Issues at night? (haunted?)  Crosstalk  Nearing or near-end crosstalk  Attenuation  Collisions  Shorts  Open impedance mismatch (echo)  Interference

Wireless Issues  Interference  Incorrect encryption  Incorrect channel  Incorrect frequency  ESSID mismatch  Standard mismatch  Distance  Bounce  Incorrect antenna placement

Troubleshooting Steps

Troubleshooting Steps

Troubleshooting Steps

Troubleshooting Tips  Don’t overlook the SSS  Prioritize your problems  Check software configuration

Troubleshooting Tips  Don’t overlook physical conditions  Don’t overlook cable problems  Check for viruses

Oh, by the way…