Troubleshoot DNS with ipconfig in Windows 2000
Takeaway: The console-based ipconfig command enables you to view and set IP settings for the local computer; it also allows you to view DNS information and troubleshoot DNS problems. This Windows 2000 Pro tip explains which ipconfig commands to use to troubleshoot DNS problems.
The console-based ipconfig command enables you to view and set IP settings for the local computer. For example, the follow command lists all settings and properties for IP:
ipconfig /all
However, configuring IP settings isn't the only task you can perform with ipconfig. This handy tool also lets you view DNS information and troubleshoot DNS problems.
For example, if a DNS lookup has failed because a DNS server wasn't available, that failed lookup is cached by the computer. You can clear the local DNS resolver cache with the following command:
ipconfig /flushdns
When you're troubleshooting DNS, it's sometimes useful to be able to view the contents of the resolver cache to determine what the resolver has returned for a particular host. To view the cache, use the following command:
ipconfig /displaydns
In addition, you can also cause Windows to update the DNS record for the local host in the local DNS server:
ipconfig /registerdns
Updating the host record in DNS ensures that the host name will resolve to the appropriate IP address after a DHCP lease renewal or manual address change.
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Print/View all Posts Comments on this article
How do you get rid of all these dns entries?
charles.thompson@... | 08/02/05
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Are you referring to DNS cache or Firewall configuration?
urbantec92@... | 08/02/05
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Solved
charles.thompson@... | 08/02/05
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null
djameson@... | 08/02/05
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You're using Spybot, aren't you?
YetAnotherAdmin | 08/02/05
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Bingo you win the prize!
charles.thompson@... | 08/02/05
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RE: Troubleshoot DNS with ipconfig in Windows 2000
akramzeya@... | 09/19/07
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about ipconfig
akramzeya@... | 09/19/07
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RE: Troubleshoot DNS with ipconfig in Windows 2000
Parthasarathi.webmail@... | 10/17/07
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