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
1.
2.
3.
Troubleshooting Steps
4.
5.
6.
Troubleshooting Steps
7.
8.
9.
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…
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