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Set Aging and Scavenging Properties for a Zone

Updated: May 9, 2008

Applies To: Windows Server 2008

The DNS Server service supports aging and scavenging features. These features are provided as a mechanism for performing cleanup and removal of stale resource records, which can accumulate in zone data over time.

You can use this procedure to set the aging and scavenging properties for a specific zone using either the DNS Manager snap-in or the dnscmd command-line tool.

Membership in Administrators, or equivalent, is the minimum required to complete this procedure. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (http://go.microsoft.com/fwlink/?LinkId=83477).

  1. Open DNS Manager. To open DNS Manager, click Start, point to Administrative Tools, and then click DNS.

  2. In the console tree, right-click the applicable zone, and then click Properties.

  3. On the General tab, click Aging.

  4. Select the Scavenge stale resource records check box.

  5. Modify other aging and scavenging properties as needed.

  1. Open a command prompt. To open an elevated Command Prompt window, click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.

  2. At the command prompt, type the following command, and then press ENTER:

    dnscmd <ServerName> /Config <ZoneName> {/Aging <Value>|/RefreshInterval <Value>|/NoRefreshInterval <Value>}


Parameter Description


Specifies the name of the command-line tool for managing DNS servers.


Required. Specifies the Domain Name System (DNS) host name of the DNS server. You can also type the IP address of the DNS server. To specify the DNS server on the local computer, you can also type a period (.)


Required. Configures the specified zone.


Required. Specifies the name of the zone to which you want to set aging and scavenging.


Required. Enables aging for zones.


Required. Specifies the Refresh interval for a scavenging-enabled zone.


Required. Specifies the No-refresh interval for a scavenging-enabled zone.


Required. For /Aging, type 1 to enable aging. Type 0 to disable aging. For /RefreshInterval, type a value in hours. The default setting is 168 hours (one week). For /NoRefreshInterval, type a value in seconds. The standard setting is 3600 (one hour).

To view the complete syntax for this command, at a command prompt, type the following command, and then press ENTER:

dnscmd /Config /help 

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