2. Why CMDB update of existing Assets using Polling (Agent-less discovery) doesn’t work using DHCP protocol?

In a network using the DHCP protocol, IPs are dynamically allocated by a server. The IPs of machines change automatically which are not captured by the system during agent-less discovery; this results in failure when existing assets are discovered again using polling. To overcome this problem, you have to configure DNS in the product.

Learn how to configure DNS.