Modify a transit gateway using Amazon VPC Transit Gateways - Amazon VPC
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Modify a transit gateway using Amazon VPC Transit Gateways

You can modify the configuration options for a transit gateway. When you modify a transit gateway, any existing transit gateway attachments don't experience any service interruptions.

You cannot modify a transit gateway that has been shared with you.

You cannot remove a CIDR block for the transit gateway if any of the IP addresses are currently used for a Connect peer.

To modify a transit gateway

  1. Open the Amazon VPC console at https://console.amazonaws.cn/vpc/.

  2. On the navigation pane, choose Transit Gateways.

  3. Choose the transit gateway to modify.

  4. Choose Actions, Modify transit gateway.

  5. Modify the options as needed, and choose Modify transit gateway.

To modify your transit gateway using the Amazon CLI

Use the modify-transit-gateway command.