Maximum Negative Cache TTL - BlueCat Address Manager - 9.0.0

Address Manager Administration Guide

BlueCat Address Manager

Negative Cache TTL defines the length of time that a negative response to a DNS query is held in cache. In Address Manager, you can set the time in seconds, minutes, hours, or days. On the Windows server, the time is shown in seconds.

When deploying to Windows servers, this option can be set at the following levels:
  • Configuration
  • Server Group
    Attention: Server Groups only support BlueCat DNS/DHCP Servers.
  • Server
  • View

To set the Maximum Negative Cache TTL option:

  1. Navigate to the appropriate level in Address Manager (configuration, Windows server, or view).
  2. Click the Deployment Options tab.
  3. Click New, then select DNS Option.
  4. From the Option drop-down menu, select Maximum Negative Cache TTL.
  5. In the Time field, type a value. From the drop-down menu, select a unit of time (Seconds, Minutes, Hours, or Days).
  6. In the Server section, determine the servers to which this option applies:
    • To apply the option to all servers in the configuration select All Servers.
      Attention: Server Groups only support BlueCat DNS/DHCP Servers.
    • To apply the option to a specific server select Specific Server, then select a server from the drop-down menu.
  7. Click Add to add the option and return to the Deployment Options tab.