Hands-on with Windows Server 2019. DHCP question.

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Hi, I'm learning about deploying dhcp in hands-on with Windows Server 2019. My question is if the router has dhcp built in it and I assign a Windows server as a dhcp on the same LAN will there be a conflict or will the server take precedence? Thank you.

There will be a conflict. You can try setup the Windows 2019 server DHCP options to have the same settings as your router DHCP but it can still cause issues even like this.

@simon-taplin Thank you for taking your time and answering my question!

@aaron-alvarez said in Hands-on with Windows Server 2019. DHCP question.:

Hi, I'm learning about deploying dhcp in hands-on with Windows Server 2019. My question is if the router has dhcp built in it and I assign a Windows server as a dhcp on the same LAN will there be a conflict or will the server take precedence? Thank you.

There is not technically a conflict per se. The fact is that nature of DHCP clients is that they will accept the first OFFER that comes to them, so it depends on which is faster in that OFFER, the router's or the Windows Server 2019 DHCP server.

@Aaron-Alvarez

I would tag on to @Ronnie-Wong here and add that many environments have you setting aside ip address ranges for certain applications, users, sites, etc. Using the DHCP admin in Windows Server 2019 gives you a more, how you say, "elegant" view of any type of configurations you set up. It's not that routers can't perform much of the same function, but you'll find that some administrators prefer using the .msc interface over other methods available on hardware based environments.

Lots of different schools of thought on which you should use, whether you setup the router as a backup, etc.

@Aaron-Alvarez ,

You will also need to make sure there is no overlap between the address pools on the router and the DHCP server. Running two DCHP servers is common for fault tolerance, just requires a bit of planning and careful configuration.