1. SOFTWARE AND HARDWARE TOOLS Chapter 19 Network Troubleshooting Spring, 2013

2. 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?

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

4. Hardware or Software?  Usually involves three things: 

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

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

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

8. Troubleshooting Steps 1. 2. 3.

9. Troubleshooting Steps 4. 5. 6.

10. Troubleshooting Steps 7. 8. 9.

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

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

13. Oh, by the way…