In the Resolve Configuration step of the migration, you can optionally add additional uplink interfaces on the NSX-T Edge nodes.

A maximum of 15 additional uplinks are supported on each NSX-T Edge node. Therefore, each Edge node can have a maximum of 16 uplinks.
  • One required uplink that corresponds to an existing uplink on the NSX-V Edge Services Gateway (ESG).
  • Up to15 additional uplinks.

On the Resolve Configuration page, you must first submit inputs to resolve feedback messages that are displayed for adding the required uplink on each NSX-T Edge node corresponding to an existing uplink on each NSX-V Edge Services Gateway. After the feedback messages for the required uplinks are resolved for each NSX-T Edge, follow the steps in this procedure to add additional uplinks (if necessary) on the desired NSX-T Edge nodes.

The default recommendation is to skip the creation of additional uplinks on the NSX-T Edge nodes. If you accept the default recommendation, no additional uplinks are created during the migration.

Example
Assume that your NSX-V topology has two north-facing ESGs configured in ECMP and connected to upstream physical ToR switches. The existing uplink interfaces on the two ESGs have the following configuration:
  • ESG-1: The uplink of this ESG is attached to a Public-DVPG1 port group, which uses VLAN 13. The uplink IP is 40.40.40.2/24.
  • ESG-2: The uplink of this ESG is attached to a Public-DVPG2 port group, which uses VLAN 16. The uplink IP is 20.20.20.2/24.

The migrated NSX-T topology contains two NSX-T Edge nodes (Edge-1, Edge-2) in an active/active configuration. You want to add one additional uplink on both Edge-1 and Edge-2.

The procedure in this topic explains the workflow to add two additional uplinks for this example.

Note: If the migrated NSX-T Edge nodes in an active-passive configuration, the feedback messages are slightly different. However, the overall workflow remains the same. You must follow the messages in the UI and submit appropriate inputs to resolve the feedback messages.

Procedure

  1. On the Resolve Configuration page, click the following feedback message:
    Enter the number of additional uplinks needed.
    Note: If the Edge nodes are in an active-passive configuration, enter the number of additional uplinks you want to add on an Edge node. The same number of additional uplinks will automatically be added on the other Edge node.
    For the example above, the NSX-T Edge nodes are in an active-active configuration. You must enter the total number of uplinks that are required for all the active Edge nodes. That is, enter 2 to create two additional uplinks.
  2. Click the following feedback message:
    Select an Edge Transport Node for additional uplinks. See System > Fabric > Nodes > Edge Transport Nodes for available Edge Transport Nodes in NSX-T.
    Note: This feedback message is displayed only when the Edge nodes are in an active-active configuration. If the Edge nodes are in an active-passive configuration, the active Edge node is automatically selected for creating the additional uplinks.

    Because you entered 2 in the earlier step, two additional uplinks named Additional Uplink-1 and Additional Uplink-2 are displayed. Select an Edge node for each additional uplink.

    For the example above, select Edge-1 for Additional Uplink-1, and Edge-2 for Additional Uplink-2.
  3. Click the following feedback message:
    Enter the IP address for additional uplink.

    The additional uplink IP address must not belong to the subnet of an existing uplink interface on the same Edge node.

    Note: If the Edge nodes are in active-passive configuration, feedback messages to add IP addresses for the additional uplinks on both the Edge nodes are displayed. The IP addresses of the additional uplinks on both the Edge nodes must be in the same subnet and are different.
    For the example above:
    • Enter 30.30.30.2/24 for the additional uplink on Edge-1.
    • Enter 10.10.10.2/24 for the additional uplink on Edge-2.
  4. Click the following feedback message:
    Enter VLAN ID for additional uplink.
    The VLAN ID for additional uplinks must satisfy the following conditions:
    • It must be different from the VLAN that is used for the Edge TEP.
    • It must be different from the VLAN that is used for the existing uplink on the same Edge node.
    Note: If the Edge nodes are in an active-passive configuration, you must add the VLAN ID for the additional uplinks on only one Edge node. The same VLAN ID for the additional uplinks on the other Edge node will automatically be added.
    For the example above, enter VLAN ID 18 for 30.30.30.2/24 uplink on Edge-1, and 20 for 10.10.10.2/24 uplink on Edge-2.
  5. (Optional) After you have resolved all the feedback messages for additional uplinks, if you want to change the total number of additional uplinks to 3, do the following.

    Click the feedback message mentioned in step 1, and edit the total number of uplinks to 3.

    After you submit the change, additional feedback messages are displayed to select the Edge transport node, uplink IP, and VLAN ID for this additional uplink. Respond to the feedback messages as explained in steps 2, 3, and 4.

    If you decide to change the total number of uplinks back to the original value 2, you will get warning messages about uplink-3. You can accept the default recommendation to skip uplink-3 and the associated uplink IP and VLAN ID.

What to do next

After finishing the Migrate Configuration step, verify that the required uplinks and the additional uplinks are created on the tier-0 gateway.

For this example, navigate to the tier-0 gateway in the NSX Manager UI, and verify that the tier-0 gateway shows the following uplinks with status as Success:
  • uplink1: 40.40.40.2/24
  • uplink2: 20.20.20.2/24
  • uplink3: 30.30.30.2/24
  • uplink4: 10.10.10.2/24