Create a static route using Amazon VPC Transit Gateways
Create a static route for a VPC, VPN, or transit gateway peering attachment, or you can create a blackhole route that drops traffic that matches the route.
Static routes in a transit gateway route table that target a VPN attachment are not filtered by the Site-to-Site VPN. This might allow unintended outbound traffic flow when using a BGP-based VPN.
To create a static route using the console
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Open the Amazon VPC console at https://console.aws.amazon.com/vpc/
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On the navigation pane, choose Transit Gateway Route Tables.
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Select the route table for which to create a route.
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Choose Actions, Create static route.
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On the Create static route page, enter the CIDR block for which to create the route, and then choose Active.
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Choose the attachment for the route.
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Choose Create static route.
To create a blackhole route using the console
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Open the Amazon VPC console at https://console.aws.amazon.com/vpc/
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On the navigation pane, choose Transit Gateway Route Tables.
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Select the route table for which to create a route.
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Choose Actions, Create static route.
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On the Create static route page, enter the CIDR block for which to create the route, and then choose Blackhole.
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Choose Create static route.
To create a static route or blackhole route using the AWS CLI
Use the create-transit-gateway-route command.
