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Windows Server's DHCP Proxy Mode RRS feed

  • Question

  • Hello,

    I have been searching though the internet without any success for information on how to configure the Microsoft DHCP server to act as a DHCP-Proxy and not master. The network already has a master DHCP server which I have no control over, and I'm trying to setup WDS/PXE enviroment.

    The server is running Windows Server 2016 and help would be much apperiated.

    Sunday, April 15, 2018 11:13 AM

All replies

  • Hi,

    Have a nice day! Thanks for your question.

    DHCP proxy is a fully-functional DHCP server and client built inside. The PC establishes IP leases from the DHCP server on one interface, and then keeps these addresses in a pool. On another interface, the server side of the implementation provides leases to other machines using that pool.

    Cisco PIX/ASA Firewalls and some advanced router has the function DHCP Proxy.

    Here is a link refer to configuring DHCP Proxy, it may be helpful.

    https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_chapter_0110.html

    Meanwhile, I’m afraid to tell that Windows server doesn’t achieve the function DHCP proxy. I’d like to recommend that you may deploy DHCP Relay Agent running the similar function as DHCP Proxy while using the platform Windows Server.  

    DHCP Relay Agents are required because routers do not normally pass broadcast traffic across the subnets.  Therefore if you wanted to service a remote subnet for DHCP services, you have to find a way to get those packets across the router.  That is where the DHCP Relay Agent is used.  Fortunately, all modern routers should have this service built-in.  On Cisco routers, it called IP Helper.  You can also configure a Windows Server 200x to function in this manner by enabling the Routing and Remote Access Service (RRAS).  Once enabled you can add that Relay Agent functionality. 

    Please refer to the following link for the deployment.

    Relay Agent Deployment

    https://technet.microsoft.com/en-us/library/cc958955.aspx

    Configure the DHCP Relay Agent

    https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/ff687684(v=ws.10)

    How to Configure DHCP Relay Agent in Windows Server 2016

    https://www.youtube.com/watch?v=q49fShbcU8U

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

    Hope above information can help you.

    Highly appreciate your effort and time. If you have any questions and concerns, please feel free to let me know.

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    Monday, April 16, 2018 6:50 AM
  • Hi,

    How are things going on? Was your issue resolved?

    Please let us know if you would like further assistance.

    Wish you have a nice day!

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com


    Wednesday, April 18, 2018 10:29 AM
  • Hi,

    Have a nice day! Thanks for your question.

    DHCP proxy is a fully-functional DHCP server and client built inside. The PC establishes IP leases from the DHCP server on one interface, and then keeps these addresses in a pool. On another interface, the server side of the implementation provides leases to other machines using that pool.

    Cisco PIX/ASA Firewalls and some advanced router has the function DHCP Proxy.

    Here is a link refer to configuring DHCP Proxy, it may be helpful.

    https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_chapter_0110.html

    Meanwhile, I’m afraid to tell that Windows server doesn’t achieve the function DHCP proxy. I’d like to recommend that you may deploy DHCP Relay Agent running the similar function as DHCP Proxy while using the platform Windows Server.  

    DHCP Relay Agents are required because routers do not normally pass broadcast traffic across the subnets.  Therefore if you wanted to service a remote subnet for DHCP services, you have to find a way to get those packets across the router.  That is where the DHCP Relay Agent is used.  Fortunately, all modern routers should have this service built-in.  On Cisco routers, it called IP Helper.  You can also configure a Windows Server 200x to function in this manner by enabling the Routing and Remote Access Service (RRAS).  Once enabled you can add that Relay Agent functionality. 

    Please refer to the following link for the deployment.

    Relay Agent Deployment

    https://technet.microsoft.com/en-us/library/cc958955.aspx

    Configure the DHCP Relay Agent

    https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/ff687684(v=ws.10)

    How to Configure DHCP Relay Agent in Windows Server 2016

    https://www.youtube.com/watch?v=q49fShbcU8U

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

    Hope above information can help you.

    Highly appreciate your effort and time. If you have any questions and concerns, please feel free to let me know.

    Best regards,

    Michael


    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

    That's not doable. I have no control over the HP Switch in place as it's the forbidden thing to touch, nor would I have the cable to even connect to it. This is a corporate network and it's not possible to just ask to get those options added.

    These HAS TO be on the same subnet and DHCP relay is nothing I can take advance of due to the fact that I need to be able to add DHCP options. How is this doable with Microsoft Windows Server DHCP? There should be a way to do it, but the documentation is lacking a lot needed information. So ideas?
    Thursday, April 19, 2018 1:17 PM