You want high availability for DHCP services, a primary server to handle most DHCP requests, and a secondary server to respond to client requests only if the primary server fails to in about a second. The primary server has about 85% of the IP addresses to lease, leaving the secondary server with about 15%. You don't want the servers to replicate with each other. What should you configure?

The blocking system.

Explanation:

In order to avoid servers to replicate with each other, I should configure the blocking system of the first DHCP.

For example, if the first DHCP fails to respond, the second will get in place, however, I have to configure the first system that immediately that the second DHCP starts working, the first blocks its information and use.

By this way, there won´t be any duplicated actions or reponses.

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