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
Open the Amazon VPC console at https://console.aws.amazon.com/vpc/
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On the navigation pane, choose Transit Gateways.
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Choose the transit gateway to modify.
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Choose Actions, Modify transit gateway.
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Modify the options as needed, and choose Modify transit gateway.
To modify your transit gateway using the AWS CLI
Use the modify-transit-gateway
