Win2012 VM as DHCP Server not assigning IP Addresses

Question

Hi,

I installed DHCP service on a win2012 virtual DC but it is not assigning IP addresses to domain pcs. Is there any specific option that needs to be configured?

Thanks.

Answer 1

Hello again... so the problem is not the DHCP server, it's the connectivity on your Hyper-V switch seem like.

Like I said before, set a static IP on the physical PC and see if you can ping the DHCP server to determine if there is a connectivity problem.

If it assigns address to other VM's on the same Hyper-V host but not to physical devices, you probably have the Hyper-V NIC set to internal or some other connectivity problem. Make sure the hyper-V switch NIC is set to external so it can communicate with the physical hosts on the LAN.

Answer 2

Yes, I found that the option "Allow management system to share this nic" was not enabled on the virtual switch. I am not sure if it is exactly required for DHCP Service to work. The hyper-v server has four NICS with two teams having two NICS each. One team is for physical server connectivity of the hyper-v server and another team was used as Virtual Swtich for virtual machines. I have deleted the virtual switch and its team and assigned all four NICs to a single team and then created a new virtual switch but seems it is still not assigning the addresses to physical computers. I will check another physical pc now.

Thanks.

Answer 3

Is the virtual switch set to internal or eternal?

Answer 4

Are DHCP server and clients on the same subnet. If not, you need some sort of RFC 1542 relay agent. Take a look here: https://www.itechguides.com/dhcp-relay-agent-configuration-in-windows-server-2016/

Answer 5

Yes they are on the same network and they were able to get IP from the gateway firewall before i disabled it.