Aviatrix Gateway to AWS Virtual Private Gateway (VGW)

This section describes how to configure an IPsec tunnel between an Aviatrix Gateway and an AWS VGW.

gw2vgw

For this use case, we will configure the AWS VGW VPN connection first and then download the configuration from AWS and import it into Aviatrix.

Create the VPN Connection

Prerequisites

  1. You have a VGW created and attached to a VPC.

  2. You have an Aviatrix Gateway provisioned in a different VPC. You will need this gateway’s public IP address for the steps below.

  1. Log in to your VPC Dashboard in the region where your VGW is located.

  2. Create a new Customer Gateway.

    awscg

    Field

    Description

    Name

    Enter any name here

    Routing

    Select Static

    IP Address

    Enter the Aviatrix Gateway’s public IP

  3. Create a VPN Connection.

    awsvpn
    Field Description

    Name

    Enter any name here

    Virtual Private Gateway

    Select your VGW

    Customer Gateway

    Select Existing

    Routing Options

    Select Static

    Static IP Prefixes

    Enter the CIDR(s) of the VPC where the Aviatrix Gateway resides.

    Tunnel Options

    Leave blank/default

  4. Select the VPN you just created and click the Download Configuration button along the top. At the dialog, select Generic for the Vendor, Generic for the Platform and Vendor Agnostic for the Software.

  5. Click Download Configuration. You will use this file to create the other side of the tunnel.

    awsdownloadvpnconfig

Configuring Aviatrix

  1. Log in to your Aviatrix Controller.

  2. Follow the steps in Site2Cloud Tutorial. Use this table for specific field values.

    Field Description

    VPC ID/VNet Name

    Select the Aviatrix Gateway VPC or VNet from the drop-down.

    Connection Type

    Unmapped

    Remote Gateway Type

    AWS VGW

    Algorithms

    Checked

  3. Populate the remaining fields.

    Field Description

    Remote Gateway IP Address

    Enter the value that matches the value Tunnel Interface Configuration > Outside IP Addresses > Virtual Private Gateway

    Pre-shared Key

    Enter the value that matches the value Internet Key Exchange Configuration > Pre-Shared Key

    Remote Subnet

    Remote subnet is usually the cloud networks for example, Spoke VPC which on-prem wants to reach to (10.20.0.0/20)
    tunnelconfig

Test

Once complete, test the communication using the tunnel.

Troubleshooting

Wait 2-3 minutes for the tunnel to come up. If it does not come up within that time, check the IP addresses to confirm that they are accurate. Additional troubleshooting is available in the Diagnostics tab.

Appendix: Enable HA

You can enable HA for Aviatrix Site2Cloud connection to AWS VGW. Please add the following extra steps to the configuration.

Creating an Aviatrix HA Gateway

Before creating a Site2Cloud connection, follow this guide’s Backup Gateway and Tunnel HA section to create an Aviatrix HA gateway in the same VPC.

Creating a VPN Connection Between VGW and the Aviatrix HA Gateway

From the AWS console, create a new VPN connection between VGW and Aviatrix HA Gateway.

  1. Create a new Customer Gateway for Aviatrix HA Gateway:

    Field

    Description

    Name

    Enter any name here

    Routing

    Select Static

    IP Address

    Enter the Aviatrix HA Gateway’s public IP

  2. Create a new VPN connection for Aviatrix HA Gateway:

    Field Description

    Name

    Enter any name here

    Virtual Private Gateway

    Select the same VGW using for primary VPN connection

    Customer Gateway

    Select CGW your just created for HA

    Routing Options

    Select Static

    Static IP Prefixes

    Enter the CIDR(s) of the VPC where the HA Aviatrix Gateway resides.

    Tunnel Options

    Leave blank/default

  3. Download the configuration for this new VPN connection just like you did earlier for the primary VPN connection.

Create Aviatrix Site2Cloud Connection with HA

From Aviatrix Controller UI > Site2Cloud page, click + Add New, under Add a New Connection, make sure Enable HA is checked.

Additional fields are displayed when checked.

VPN information for backup needs to be obtained from the downloaded configuration of AWS VPN connection between VGW and Aviatrix HA Gateway. Follow the same steps you did for primary connection.
Field Description

Backup Gateway

Select the Aviatrix HA Gateway you just created

Remote Gateway IP Address(Backup)

Enter the value that matches the value Tunnel Interface Configuration > Outside IP Addresses > Virtual Private Gateway

Pre-shared Key(Backup)

Enter the value that matches the value Internet Key Exchange Configuration > Pre-Shared Key

Other fields should be filled as instructed in above section Configure Aviatrix.