DNS-Based Tags
Important:The product name for this user guide has changed from Foundation and Cloudscape to Business Service Discovery and Migration Planning. Previous UI pages known as Foundation have changed to Business Service Discovery. Previous UI pages known as CloudScape have changed to Migration Planning.
DNS information is collected from licensed Windows DNS Servers and used to apply tags about A records, CNAME records and other data to device groups. Tags are applied every 24 hours to licensed, inaccessible, and unknown devices, where data is available.
The term Degree is used for DNS-based tags to represent the distance of a CNAME record from an A record. For example, a CNAME record of name.domain.com which directs to a second CNAME record other-name.domain.com before finally directing to an A record of 192.168.56.4 would have a Degree of 2.
Following are definitions of DNS-based tags:
| • | DNS A Record—This tag will be applied to a device for any A record that refers to it; A Records have a degree of 0. |
| • | DNS CNAME Record - Degree X—This tag will be applied to a device for any CNAME record that refers to it, where "X" is the degree value. CNAME Records have a degree greater than 0. |
| • | DNS Entry Point—This tag will be applied to a device for any DNS records that exist at the largest degree available for that device. |
| • | If a device has only A records (degree 0), all A records would exist in this tag key |
| • | If a device has 5 records at degree 0, 2 at degree 1 and 1 at degree 2, it would have one Entry Point tag with the value of the degree 2 record |
| • | DNS Unique—This uses the same logic as the Entry Point tag, but further filters out any tags that contain the host name of the device. |