This lab we created a functioning DHCP server in Packet Tracer

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In order to do this, follow these steps.

Step 1: On a generic Packet Tracer server, enable "DHCP" in the Services tab. Change the start address of "serverPool" to 100.

Step 2: Create a pool for each VLAN on your network, the default gateway will be the router address for that VLAN (different for each VLAN).

Step 3: For the Start IP address, this will be the first IP that the DHCP server should start assigning to clients. Ensure the Subnet mask & VLAN are correct, also set the Maximum Users to be the maximum hosts available for your subnet.

Step 4: In order to allow DHCP requests to be passed on to a different network (through a router), you have to tell the router to forward them to your DHCP server. You can do this by typing in the CLI interface vlan <vlan # here> followed by ip helper-address to provide the IP address of the DHCP server and make sure to do that for each vlan.

After that, the DHCP server should be functioning, you can set your client PCs to get an IP address through DHCP to see if it works!