Tier-0 logical routers have downlink ports to connect to NSX-T tier-1 logical routers and uplink ports to connect to external networks.

Prerequisites

  • Verify that at least one NSX Edge is installed. See the NSX-T Installation Guide

  • Verify that your NSX Controller cluster is stable.

  • Verify that an edge cluster is configured. See the NSX-T Installation Guide.

  • Familiarize yourself with the networking topology of the tier-0 logical router. See Configuring a Tier-0 Logical Router.

Procedure

  1. From your browser, log in to an NSX Manager at https://nsx-manager-ip-address.
  2. Select Routing from the navigation panel.
  3. Click Add to create a tier-0 logical router.
  4. Select Tier-0 Router from the drop-down menu.
  5. Assign a name for the tier-0 logical router.
  6. Select an existing edge cluster from the drop-down menu to back this tier-0 logical router.
  7. (Optional) : Select a high-availability mode.

    By default, the active-active mode is used. In the active-active mode, traffic is load balanced across all members. In active-standby mode, all traffic is processed by an elected active member. If the active member fails, a new member is elected to be active.

  8. (Optional) : Click the Advanced tab to enter a subnet for the intra-tier 0 transit subnet.

    This is the subnet that connects to the tier-0 services router to its distributed router. If you leave this blank, the default 169.0.0.0/28 subnet is used.

  9. (Optional) : Click the Advanced tab to enter a subnet for the tier-0-tier-1 transit subnet.

    This is the subnet that connects the tier-0 router to any tier-1 routers that connect to this tier-0 router. If you leave this blank, the default address space assigned for these tier-0-to-tier-1 connections is 100.64.0.0/10. Each tier-0-to-tier-1 peer connection is provided a /31 subnet within the 100.64.0.0/10 address space.

  10. Click Save.

    The new tier-0 logical router appears as a link.

  11. (Optional) : Click the tier-0 logical router link to review the summary.

What to do next

Attach tier-1 logical routers to this tier-0 logical router.

Configure the tier-0 logical router to connect it to a VLAN logical switch to create an uplink to an external network. See Connect a Tier-0 Logical Router to a VLAN Logical Switch.