How to setup a DHCP Scope on Windows Server 2016
A DHCP Scope is a range of IP addresses that can be automatically assigned to devices such as a computer for a particular subnet.
The following guide will show you how to setup a DHCP Scope on Windows Server 2016 with step by step instructions.
Step 2: Here is where you can configure your DHCP settings. Under DHCP you will see your server name as a fully qualified domain name. Click the arrow pointing to the right to list your DHCP IPv4 and IPv6 servers.
Step 3: For demonstration purposes we will be create a DHCP Scope for IPv4. Right click on IPv4 and click “New Scope…”.
Step 4: You will be prompted with the “New Scope Wizard”. To begin click on the “Next” button.
Step 5: Type in a name for the DHCP Scope. This is used to identify the area where the range of IP Addresses will be used. (For demonstration purposes I named my DHCP Scope “Lab Scope 1”) Once you fill in the name click the “Next” button.
Step 6: Here is where you specify the IP Address Range as well as the Subnet Mask. For demonstration purposes I am going to start my IP Address Range for this DHCP Scope at “192.168.1.51” and end at “192.168.1.254”. This gives me 203 available IP Addresses that are able to be distributed by this DHCP Scope. For the “Length” (Prefix Length) I will use 24 which will give me a Subnet Mask of “255.255.255.0”. Once you are done typing in the required information click the “Next” button.
* While using a Subnet Mask of 255.255.255.0 you can not use the IP Address 192.168.1.0 (Network Identifier) or 192.168.1.255 (Broadcast Address). These are reserved for network and broadcast addressing.
I started this DHCP Scope at 192.168.1.51 so that I can use 192.168.1.1 to 192.168.1.50 as Static IP Addresses. For instance I used the Static IP Address 192.168.1.1 on this server. If I have other servers that require a Static IP Address I can assign 192.168.1.2 and so on up to 192.168.1.50. Keep this in mind when creating your DHCP Scopes. Be aware if you decide to setup your DHCP Scope to start at 192.168.1.1 make sure you don’t have a Static IP Address on your network assigned within the IP Address range of the DHCP Scope. This can cause an IP Address Conflict because you will potentially have two devices on the same network with the same IP Address. Optionally you can create an DHCP Scope Exclusion and specify the range of IP’s that you would like to be excluded. Then you can use this excluded range to assign Static IP Addresses or Reservations.
Step 7: Here you have the option of adding DHCP Scope Exclusions. For instance if you wanted to start your DHCP Scope at 192.168.1.1 instead of 192.168.1.51 you can put all your Static IP Addresses and Reservations that are within the IP Address Range of the DHCP Scope into a DHCP Scope Exclusion. This is used to avoid IP Address Conflicts.
For demonstration purposes I set my DHCP Scope to start at 192.168.1.51 and plan to use 192.168.1.1 through 192.168.1.50 for Static IP Addresses so I do not need to add a DHCP Scope Exclusion. Click the “Next” button to continue.
Step 8: Here you will have the option to set the Lease Duration. A Lease Duration determines how long a device will retain an IP Address before its given back to the DHCP server to be recycled and available to be distributed again to another potential device. The time you set here varies depending on the type of usage the devices requesting an IP will be used for. If you have mostly public devices that will be connected to this network then its best to set a short Lease Duration or else you can get into an issue of running out of IP Addresses for that DHCP Scope. For instance if you set the number of days to 365. Then your DHCP Scope will reserve every IP Address that it has given to a device for an entire year. If you only have 203 IP Addresses available to give then you can only have 203 devices that can connect to your network for the entire year. For this reason it is good to set a Lease Duration that coincides with your device usage. For the demonstration I am sticking the default which is 8 days. Click the “Next” button to continue.
Step 9: Here you will be given the option to configure the DHCP Options that are given out to every device that connects to this DHCP Scope. Make sure the option “Yes, I want to configure these options now” is selected and click the “Next” button to start the configuration.
Step 10: The first DHCP Option that you can configure is the Default Gateway. Every device that gets an IP Address from this DHCP Scope will have this set as their Default Gateway. To set the Default Gateway for this DHCP Scope type in the IP Address of your Default Gateway then click the “Add” button. Once you have added your Default Gateway click the “Next” button to continue the configuration.
Step 11: The second DHCP Option you can configure is DNS. You can add multiple DNS servers (for redundancy) from a specified Parent domain. The devices that receive an IP Address from this DHCP Scope will use the same DNS Servers that you set here. For demonstration purposes I will continue with one DNS Server which is on this same server and is added by default. Click “Next” to continue.
Step 12: Here you can configure the third option which is “WINS Servers”. Click “Next” to continue.
Step 13: To active the DHCP Scope make sure the option”Yes, I want to activate this scope now” is selected. If you select “No, I will activate this scope later” then this DHCP Scope will not assign IP Addresses until you activate it. Click “Next” to continue.
Step 14: DHCP Scope configuration is complete! Click “Finish” to exit the New Scope Wizard.
If you want to learn a little more about DHCP Scope settings continue reading on to the next step otherwise you can stop here.
Congratulations! You have setup a DHCP Scope. If you would like to further go over how to setup Scope Reservations, Options and Policies follow these guides
How to setup DHCP Scope Reservations
How to setup DHCP Scope Options
How to setup DHCP Scope Policies
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