Network Troubleshooting

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This lesson reviews network troubleshooting. Activities include troubleshooting at each layer of the OSI model.

Readings[edit | edit source]

  1. Read Wikipedia: Troubleshooting.

Activities[edit | edit source]

  1. Always start from the Physical Layer and work your way up.
  2. Use Ipconfig to display configuration information.
  3. Use Ping to test network connectivity.
  4. Use Tracert to test network routing.
  5. Use Arp to verify MAC address resolution.
  6. Use Nslookup to verify host name resolution.
  7. Use Netstat to view open connections.
  8. Use Nbtstat to view NetBIOS names.
  9. Use Telnet to test TCP ports.
  10. Use Wireshark to capture and analyze network traffic.
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