Configure DHCP on L2 stretched VMware HCX networks

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DHCP does not work for virtual machines (VMs) on the VMware HCX L2 stretch network when the DHCP server is in the on-premises datacenter. This is because NSX, by default, blocks all DHCP requests from traversing the L2 stretch. Therefore, to send DHCP requests from your Azure VMware Solution VMs to a non-NSX-T DHCP server, you'll need to configure DHCP on L2 stretched VMware HCX networks.

  1. (Optional) If you need to locate the segment name of the L2 extension:

    1. Sign in to your on-premises vCenter, and under Home, select HCX.

    2. Select Network Extension under Services.

    3. Select the network extension you want to support DHCP requests from Azure VMware Solution to on-premises.

    4. Take note of the destination network name.

      Screenshot of a network extension in VMware vSphere Client.

  2. In NSX-T Manager, select Networking > Segments > Segment Profiles.

  3. Select Add Segment Profile and then Segment Security.

    Screenshot of how to add a segment profile in NSX-T.

  4. Provide a name and a tag, and then set the BPDU Filter toggle to ON and all the DHCP toggles to OFF.

    Screenshot showing the BPDU Filter toggled on and the DHCP toggles off.

    Screenshot of the Segment Security field.