Tier-0 logical routers have downlink ports to connect to NSX-T Data Center tier-1 logical routers and uplink ports to connect to external networks.
- Verify that at least one NSX Edge is installed. See the NSX-T Data Center Installation Guide
- Verify that your NSX Controller cluster is stable.
- Verify that an NSX Edge cluster is configured. See the NSX-T Data Center Installation Guide.
- Familiarize yourself with the networking topology of the tier-0 logical router. See Tier-0 Logical Router.
- From your browser, log in with admin privileges to an NSX Manager at https://nsx-manager-ip-address.
- Select from the navigation panel.
- Click Add to create a tier-0 logical router.
- Select Tier-0 Router from the drop-down menu.
- Assign a name for the tier-0 logical router.
- Select an existing NSX Edge cluster from the drop-down menu to back this tier-0 logical router.
- (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.
- (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 188.8.131.52/28 subnet is used.
- (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.
- Click Save.
The new tier-0 logical router appears as a link.
- (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 for the NSX Edge Uplink.