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| View and manage the DNS resolver cache with Ipconfig |
| The DNS client on a Windows 2000 Professional computer resolves host names into IP addresses, |
| just as it does on other Windows platforms. DNS resolution is required to support Web browsers, |
| mail clients, and other applications that rely on host names rather than IP addresses. |
| The Windows DNS resolver caches the results of DNS queries, including negative queries (queries |
| that fail to resolve), as well as positive queries. |
| Each DNS record has a time-to-live (TTL) value that determines when the record should be |
| refreshed with another query. Until the TTL is reached, the Windows resolver will return queries |
| from the cache rather than perform a new query. |
| When you're troubleshooting connection and DNS problems, it's often necessary to flush the DNS |
| cache and force Windows to attempt a new resolution of a host name. You can use the Ipconfig |
| console command both to view the contents of the resolver cache and to clear it. |
| The following command displays the contents of the resolver cache and pipes the results to the |
| More command for display one page at a time: |
| ipconfig /displaydns | more |
| Use this command to flush the resolver cache: |
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