Hybrid Connectivity to AWS Transit Gateway with AWS Direct Connect
Publication date: August 17, 2022 (Diagram history)
You can use a Transit VIF and a Direct Connect gateway to connect your on-premises environments to AWS. With this, you can benefit from the connectivity to multiple VPCs without the need of several Direct Connect connections. It is recommended to use a second connection (Direct Connect or VPN) for high availability.
Hybrid connectivity with AWS Direct Connect architecture
The following steps describe the on-premises to AWS traffic flow:
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Traffic from the corporate data center destined to the spoke VPC A is forwarded to AWS Transit Gateway through the AWS Direct Connect (DX) link. The Transit Gateway is connected to the Direct Connect link by using a Transit virtual interface (VIF) and a Direct Connect Gateway.
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As per the Transit Gateway on-premises route table, the traffic is forwarded to the spoke VPC A attachment.
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The Transit Gateway ENI of the spoke VPC A forwards the traffic to the destination.
The following steps describe the AWS to on-premises traffic flow:
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Traffic initiated from an Amazon Elastic Compute Cloud instance in the spoke VPC B and destined to the corporate data center is routed to the Transit Gateway ENI as per the spoke VPC B route table.
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Traffic is forwarded to the AWS Transit Gateway. As per the spoke VPC route table, the traffic is routed to the office branch through the AWS Direct Connect Gateway attachment.
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The traffic is routed to the destination through the AWS Direct Connect link.
For more information about how to create an AWS Direct Connect connection, see Create a Direct Connect dedicated connection.
Further reading
For additional information, see the following resources:
Diagram history
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| Change | Description | Date |
|---|---|---|
Reference architecture diagram first published. | August 17, 2022 | |
Initial publication | Reference architecture diagram first published. | August 17, 2022 |
Reference architecture diagram first published. | August 17, 2022 | |
Reference architecture diagram first published. | August 17, 2022 | |
Reference architecture diagram first published. | August 17, 2022 | |
Reference architecture diagram first published. | August 17, 2022 | |
Reference architecture diagram first published. | August 17, 2022 | |
Reference architecture diagram first published. | August 17, 2022 |
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