What is the first step required when configuring a DHCP server?

The first step in configuring a DHCP server is to enable DHCP globally. This step is essential because it establishes the DHCP service on the device and allows it to begin processing DHCP requests from clients. Without enabling DHCP globally, the server will not respond to DHCP discovery packets sent from clients looking for an IP address assignment.

Once DHCP is enabled globally, network administrators can then move on to subsequent configurations, such as defining address pools, options, and any specific parameters necessary for the DHCP service to operate effectively. This foundational step is crucial as it sets up the server's capability to deliver IP addresses and related configuration details to clients on the network.

The other options, while relevant in the overall configuration process, depend on the service being active. Configuring pools, options, or interface settings will only be applicable after DHCP is globally enabled, highlighting the importance of this initial step.