DNS Name Resolution Troubleshooting
On many occasions in the life of a Systems Admin one needs to troubleshoot DNS name resolution problems. Here are some common DNS troubleshooting steps:
- Verify connectivity to the computer/device by performing a ping
- Ping -a <Ip Address> to test name resolution
- Verify the DNS configuration by “ipconfig /all” - check DNS server address, DNS suffixes
- Test connectivity to the DNS server with ping as well a “telnet <DNS server IP address> 53“
- Check the DNS server for the specific computer A record
- Find out if the DNS name resolution problem is affecting one or more computers/devices
- Try using Nslookup <servername>
- Check if the Enable Forwarders check box is greyed out. If it is unavailable delete the root zone to all forwarding.
Feel free to add more steps if I have missed any.DNSDNS
These DNS resolution troubleshooting tips are great. Keep the posting these great tips.