Prerequisites for a Transit Network in AWS

Setting up a transit network in AWS is simple with Aviatrix’s Transit Network Workflow. Before getting started with this workflow, make sure you have the following:

  1. Transit VPC

    This is a VPC where your spokes will connect to transit to your on-premises environment. When setting up a new transit network architecture, this VPC is typically a new VPC.

  2. Detached Virtual Private Gateway (VGW)

    This VGW is detached from any VPC and will remain detached. It is (or will be) connected to your on-premises environment via a Direct Connect or VPN connection.

  3. Spoke VPC(s)

    These VPCs will make up the spoke(s) of the transit network.

Transit Plus Spoke

Transit VPC

The following AWS components should be created when setting up the transit VPC:

  • An internet gateway (IGW) [igw-transit] for the VPC.

  • A route table [rt-transit-pub] with a 0.0.0.0/0 route pointing to igw-transit.

  • One subnet with rt-transit-pub attached.

  • (Optional - HA) One subnet with rt-transit-pub attached in a different AZ.

Use Useful Tools → Create a VPC to create a transit VPC. Make sure the option "Aviatrix Transit VPC" is selected.

Virtual Private Gateway (VGW)

Create a new VGW that will terminate your Direct Connect VIF or VPN connection to on-prem. Leave this VGW detached (it will be attached as part of the Transit Network Workflow).

Spoke VPC(s)

The following AWS components should be created for each spoke VPC:

  • An internet gateway (IGW) [igw-spoke-1] for the VPC.

  • A route table [rt-spoke-1-pub] with a 0.0.0.0/0 route pointing to igw-spoke-1.

  • One subnet with rt-spoke-1-pub attached.

  • (Optional - HA) One subnet with rt-spoke-1-pub attached in a different AZ.

  • Any number of private subnets in any AZ in the VPC.

Additional Information