In a simple DHCP scope, any device that connects and asks for an IP address is handed whatever IP is next available within the scope. If you have a device for which you always want to keep the same IP address, you could manually configure the NIC properties with a static IP address. Otherwise, a more centralized way to assign a particular IP to the same device on a long-term basis is to use a DHCP reservation. Using a reservation in DHCP to assign an IP to a device makes a lot of sense, because you can see that reservation right in the DHCP console and you don't have to worry about keeping track of the static IP addresses that you have configured out in the field. Let's walk through configuring a quick reservation so that you are familiar with this process.
We will be using a Windows Server 2016 machine as our DHCP server where we will create the DHCP reservation. Additionally, we will use our WEB1 server to be the recipient of this reservation by assigning WEB1 to IP address 10.0.0.85
.
To create a DHCP reservation for a specific server or resource, perform these instructions:
Reservations
. Right-click on Reservations
and click on New Reservation….ipconfig /all
on WEB1.
10.0.0.85
because of the reservation, rather than getting whatever IP address is next available within the DHCP scope.Typically, whenever a client computer is set to obtain an IP address automatically, it reaches out and looks for a DHCP server that hands to the client whatever IP address is free and next in the list. This causes DHCP clients to change their IP addresses on a regular basis. For desktop computers, this is usually fine. In many cases, however, it is beneficial to reserve particular IP addresses for specific devices, thereby ensuring they always receive the same IP address. Creating DHCP reservations is a good practice for servers, and also for many static devices on the network, such as print server boxes and telephony equipment.
18.216.209.235