Difference between revisions of "ITT 2015/Network module 1/Assignment Day 14"

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(Troubleshooting exercises)
(Extra - and optional - Packet tracer troubleshooting practice)
 
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*[http://mars.merhot.dk/data/troubleshooting/Error%208%20-%20Ole%20claims%20the%20LAN%20is%20dead.pkt Error 8 - Ole claims the LAN is dead]
 
*[http://mars.merhot.dk/data/troubleshooting/Error%208%20-%20Ole%20claims%20the%20LAN%20is%20dead.pkt Error 8 - Ole claims the LAN is dead]
 
*[http://mars.merhot.dk/data/troubleshooting/Error%209%20-%20Jens%20claims%20he%20can%20not%20surf%20the%20Internet.pkt Error 9 - Jens claims he can not surf the Internet]
 
*[http://mars.merhot.dk/data/troubleshooting/Error%209%20-%20Jens%20claims%20he%20can%20not%20surf%20the%20Internet.pkt Error 9 - Jens claims he can not surf the Internet]
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== Extra tasks ==
 
== Extra tasks ==

Latest revision as of 20:07, 30 November 2015

Network troubleshooting

Troubleshooting techniques

  • Always start with a simple check for the user-claimed error!
  • Make a plan / note for yourself:
    • Draw a simple block diagram of the situation or use an existing diagram / documentation
    • Write in short some lines of which technical facts you know about the error
    • Write in short some lines of which technical facts you should remember to check or measure ( brainstorm / idea-catalog )


Troubleshooting skills

  1. Knowledge of all Technologies involved. ( How does it work? )
  2. Knowledge of troubleshooting tools. ( Ping, ipconfig, show ip route .... )
  3. Good at troubleshooting. ( Locating and correcting the fault in a logical way )


Troubleshooting exercises

Diagram for ITT1 network troubleshooting exercises:

Diagram for ITT1 fault finding

Troubleshooting challenge number 1: Jens has no Internet!
Troubleshooting challenge number 2: Ole has no access to Internet!
Troubleshooting challenge number 3: Viggo from IT staff has no access to SYSLOG service!
Troubleshooting challenge number 4: Louise can't reach www.itt2015.com!
Troubleshooting challenge number 5: Lars can't use FTP service!
Troubleshooting challenge number 6: Jens has no Internet access - again!
Troubleshooting challenge number 7: Ole can't reach www.itt2015.com!
Troubleshooting challenge number 8: Viggo can't reach www.google.com!
Troubleshooting challenge number 9: Louise can't use TFTP-service!
Troubleshooting challenge number 10: Lars says that nobody can use www.itt2015.com!

Extra - and optional - Packet tracer troubleshooting practice


Extra tasks

Extra optional task: If you like the challenge of building networks in Cisco PacketTracer, try this Packet tracer activity!
Another optional task: Packet tracer activity 2