DHCP Relay Profile

DHCP Relay enables DHCP clients to communicate with DHCP servers when none are available on its local subnet. A relay agent uses IP routing to forward discover messages to a provisioned DHCP server. The relay agent then relays the DHCP offer back to the client network.

DHCP Relay is supported with DHCP Option 82. DHCP Option 82 allows a DHCP relay agent to insert circuit specific information into a request that is being forwarded to a DHCP server.

Creating a DHCP Relay Profile

To create a DHCP Relay profile, complete the following steps:

  1. In the HPE Aruba Networking Central landing page, click the configurationicon.
    The Profiles tab is displayed.

  2. In the left navigation menu, select one of the following options:

    • Library—The default selection. If you create profiles in the Library, then you must assign scope and device functions to the profiles. For more information, see Assigning Scope to a DHCP Relay Profile.

    • Global—If you create profiles at the Global level, then the profiles have Global scope assigned by default.

    • Site Collections—If you create profiles at the Site Collections level, then the profiles have site collection scope assigned by default.

    • Sites—If you create profiles at the Site level, then the profiles have site scope assigned by default.

    • Devices—If you create profiles at the Device level, then the profiles have device scope assigned by default.

    • Device Groups—If you create profiles at the Device Group level, then the profiles have device group scope assigned by default.

    Note:

    • To create profiles at the Global level, select the device type from the Device Function drop-down list before step 4.
    • To create profiles at the Site Collections, Sites, Devices, and Device Group level, complete the following steps before step 4:
      1. Select Site Collection, Site, Device, or Device Group in the left navigation menu.
      2. Select a Site Collection, Site, Device, or Device Group from the list view depending on the level where you are creating the profile.
      3. Select the device type from the Device Function drop-down list.

  3. On the Network Services card, click DHCP Relay.
    Alternatively, you can complete the following steps:

    1. On the Network Services card, click Manage.

    2. On the DHCP Relay card, click Manage.

    The DHCP Server list view is displayed.

  4. Click Create Profile.
    The Create Profile side panel is displayed.

    Note:

    You can only create a single DHCP Relay profile within the same scope.

    Gateways are compatible only with the IPv4 DHCP Relay profile.

  5. Enter the name of the profile in the Name field.

  6. Configure the following parameters as applicable:

    • Enable DHCP Relay—Select this checkbox to enable DHCP Relay for an IPv4 address. If selected, the Option 82 section and its related parameters are displayed as follows:

      • Enable Option 82—Select this checkbox to enable option 82 configurations.

      • Policy—Select the action to be performed on the policy from the drop-down menu.

      • Source Interface—Select this checkbox to set the source interface to be used for DHCP relay packets.

      • Remote ID—Select the remote ID from the drop-down menu.

      • Enable Hopcount Increment—Select this checkbox to enable hop-count increment.

      • Enable DHCP Relay For L2TP VPN Clients—Select this checkbox to enable DHCP Relay for L2TP VPN clients.

      • Overwrite Source IP In Replies—Select this checkbox to overwrite the source IP address in replies.

    • Enable DHCPV6 Relay—Select this checkbox to enable DHCP Relay for an IPv6 address. If selected, the following parameters are displayed:

      • Enable Option 79—Select this checkbox to enable option 79 configurations.

      • Enable Source Interface—Select this checkbox to set the source interface to be used for DHCP relay packets.

      • Enable DHCP Relay For L2TP VPN Clients—Select this checkbox to enable DHCP Relay for L2TP VPN clients.

  7. Click Create.

Assigning Scope to a DHCP Relay Profile

You must assign a scope and device function to a DHCP Relay profile created in the Library.

To assign scope to a profile, complete the following steps:

  1. In the HPE Aruba Networking Central landing page, click the configurationicon.
    The Profiles tab is displayed.

  2. Ensure that the default option Library is selected in the left navigation menu.

  3. On the Network Services card, click DHCP Relay.
    Alternatively, you can complete the following steps:

    1. On the Network Services card, click Manage.

    2. On the DHCP Relay card, click Manage.

    The DHCP Relay list view is displayed.

  4. Hover on the profile to which you want to assign a scope and click the Ellipsis icon.

  5. Select Assign.

    The Assign Profile side panel is displayed.

  6. Select the device types from Device Function list.

  7. To add a scope, click the Add icon on the Scopes table.

  8. Select a scope from the following Scope Level options in the drop-down list.

    • Global—Selecting this option assigns the scope at the Global level.

    • Site Collections—Select the site collections from the Assign to Scope drop-down list.

    • Sites—Select the sites from the Assign to Scope drop-down list.

    • Devices—Select the devices from the Assign to Scope drop-down list.

    • Device Groups—Select the device groups from the Assign to Scope drop-down list.

  9. Click Add.

    The Scopes table displays the newly added scopes.

  10. Click Assign.

    The DHCP Relay list displays the device functions and number of scopes assigned to the profile.

  11. To unassign a scope from a profile, complete the following steps:

    1. Hover on the profile name and click the ellipsis icon.

    2. Select Unassign.

    3. Select the required scope and click Unassign.

  12. To customize the DHCP Relay profile list, click the Customize Columns icon.