When the Zones node is highlighted in the Load Generators group box, the Zones Settings dialog is displayed with:
Overriding DNS is useful if you need to run tests on a pre-production environment or on a specific cluster node of a production environment.
It is possible to configure IP addresses to override DNS resolution and distribute them to all Load Generators of all zones. Therefore, no DNS resolution will be performed for these host names.
IP addresses v4 and v6 are handled.
Accepted separators are: comma, semi-colon, space, carriage return.
The Time to live (TTL) of DNS cache for Load Generators is set by default to 30 seconds. You can choose to set a different value.
0, there will be no cache: DNS resolution will be performed every time.
-1, the IP addresses will never expire.
To update the DNS cache TTL of your machine OS, refer to the specific documentation of the operating system.
Value data: If you lower the Maximum TTL value in the client's DNS cache to 1 second, this gives the appearance that the client-side DNS cache has been disabled.