Configure resolving IPv4 and IPv6 addresses to DNS hostnames in SolarWinds NTA

Disabling the option Resolve and store IPv4 hostnames immediately when a flow record is received when the option Resolve IPv4 and IPv6 addresses to DNS hostnames is enabled decreases the amount of database memory used to store DNS information and the read and write load on your SQL server associated with domain name resolution.

With the option Resolve IPv4 and IPv6 addresses to DNS hostnames enabled and the option Resolve and store IPv4 hostnames immediately when a flow record is received disabled, domain names are only resolved for device IP addresses that are actually displayed in SolarWinds NTA resources. Since they require DNS resolution with storing to calculate statistics, Top XX IPv4 Domains, Top XX IPv4 Traffic Destinations by Domain (report), and Top XX IPv4 Traffic Sources by Domain (report) become unavailable with this setting.

  1. Click Settings > All Settings.
  2. Under Product Specific Settings, click NTA Settings.
  3. Make sure the option Resolve and store IPv4 hostnames immediately when a flow record is received is unselected.
  4. Make sure the option Resolve IPv4 and IPv6 addresses to DNS hostnames is selected.
  5. Click Save.