Network Troubleshooting

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

Readings

 * 1) Read  Wikipedia: Troubleshooting.

Activities

 * 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.