DHCP server

​DHCP stands for Dynamic Host Configuration Protocol. The purpose of DHCP server is to assign IP addresses dynamically to the DHCP clients. DHCP server has a pool of IPs from which an IP address will be chosen by DHCP client.

Dynamic IPs are good choice for client computers because a dynamic IP simplifies process of management of IP addresses for client computers, however it is not a good choice for server computers because a client computer may store IP information of a server computer and if it changes then server shared resources may become inaccessible.

Second reason why dynamic IP addresses need not be assigned to server computers is because specific firewall rules may be using specific IPs and if such an IP address changes, then firewall rules will no longer be valid for that computer.

DHCP server has IP address lease time, it is a time period within a new IP address cannot be selected by a DHCP client.

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