Resize a Transit Gateway Instance

To resize a Transit Gateway:

  1. Go to the Gateway page on the left sidebar

  2. Select the Transit Gateway and click Edit.

  3. Scroll down to Change Gateway Size.

  4. In the dropdown menu, select the desired size.

  5. Click Change.

Resizing a Transit Gateway requires the gateway instance to be stopped and started again in a different size. There will be network downtime for traffic between cloud and on-prem. There should be no downtime for traffic between VPC/VNets as cloud-to-cloud traffic does not go through the Transit Gateway.

During resizing, traffic is forwarded to the Transit high availability gateway if HA.