Add Tier-1 Gateways

Hi, In my previous post, I

In the NSX-T. Now, I want to Add Tier-1 Gateways.

A tier-1 gateway is typically connected to a tier-0 gateway in the northbound direction and to segments in the southbound direction.

1- Go to the Networking–> Connectivity –> Tier-1 Gateways –> Add Tier-1 Gateways

2- Enter a name for the gateway: T1


(Optional) Select a tier-0 gateway to connect to this tier-1 gateway to create a multi-tier topology.


(Optional) Select an NSX Edge cluster if you want this tier-1 gateway to host stateful services such as NAT, load balancer, or firewall. If an NSX Edge cluster is selected, a service router will always be created, affecting the north/south traffic pattern.

I choose Edge-Cluster, Because I want to use load balancer and NAT in future post.


If you selected an NSX Edge cluster, select a failover mode or accept the default.

PreemptiveIf the preferred NSX Edge node fails and recovers, it will preempt its peer and become the active node. The peer will change its state to standby.
Non-preemptiveIf the preferred NSX Edge node fails and recovers, it will check if its peer is the active node. If so, the preferred node will not preempt its peer and will be the standby node. This is the default option.


(Optional) Click the Enable Standby Relocation toggle to enable or disable standby relocation. Standby relocation means that if the Edge node where the active or standby logical router is running fails, a new standby logical router is created on another Edge node to maintain high availability. If the Edge node that fails is running the active logical router, the original standby logical router becomes the active logical router and a new standby logical router is created. If the Edge node that fails is running the standby logical router, the new standby logical router replaces it.


(Optional) Click Route Advertisement.

Select one or more of the following:

  • All Static Routes
  • All NAT IP’s
  • All DNS Forwarder Routes
  • All LB VIP Routes
  • All Connected Segments and Service Ports
  • All LB SNAT IP Routes
  • All IPsec Local Endpoints


(Optional) Click Route Advertisement.

In the Set Route Advertisement Rules field, click Set to add route advertisement rules.


(Optional) Click Service Interfaces and Set to configure connections to segments. Required in some topologies, such as VLAN-backed segments or one-arm load balancing.

a. Click Add Interface.

b. Enter a name and IP address in CIDR format.

c. Select a segment.

d. In the MTU field, enter a value between 64 and 9000.

f. Add one or more tags.

g. In the ND Profile field, select or create a profile.

h. Click Save.


(Optional) Click Static Routes and Set to configure static routes.

a. Click Add Static Route.

b. Enter a name and a network address in the CIDR or IPv6 CIDR format.

c. Click Set Next Hops to add next hop information.

d. Click Save.


(Optional) Click Multicast and then the toggle to enable multicast. You must select an Edge cluster for this gateway. Also, this gateway must be linked to a tier-0 gateway that has multicast enabled.

Finish 🙂

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