Networking
IP Version 4
Troubleshooting IPv4
- To successfully troubleshoot IPv4-based communications, the technician should follow an incremental process that has proven successful in most situations.
- The following common troubleshooting steps are performed:
- Confirm current settings: The existing IPv4 should be confirmed.
- Validate IPv4 connectivity: If all settings appear correct, the ping utility can be used to confirm that the computer can ping its own loopback address (127.0.0.1).
- Verify DNS name resolution: Confirm the correct DNS servers are specified on network settings manually or automatically through DHCP with the iconfig utility.
- Verify data connections: If the basic IP communications and name resolution appear healthy, the problem may be a result of data filtering by a firewall restriction or corruption.