Delete Existing Tier-0 Gateways in Additional Instances

Since you will use the cross-instance tier-0 gateway for upstream connections, you delete the local tier-0 gateway from each additional VCF instance.
  1. In a web browser, log in to Global Manager cluster at https://
    active_gm_vip_fqdn
    /.
  2. On the NSX Manager main navigation bar, click 
    Networking
    .
  3. Disconnect the tier-1 gateway for the NSX Local Manager.
    1. In the navigation pane, select Tier-1 Gateways.
    2. On the Tier-1 Gateways tab, click the vertical eclipses for the
      additional_instance_tier1_gateway
      and click
      Edit
      .
    3. Under Linked Tier-0 gateway, click the X to disconnect the
      additional_instance_tier0_gateway
      , click
      Save
      , and click
      Close editing
      .
      At this point any segments connected to
      additional_instance_tier1_gateway
      will be unreachable until you have finished connecting the additional instance to the cross-instance tier-0 infrastructure.
  4. In the navigation pane, select Tier-0 Gateways.
  5. On the Tier-0 Gateway page, click the vertical eclipses for the
    additional_instance_tier0_gateway
    and click
    Delete
    .
  6. Click
    Delete
    .