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AWS Certified Advanced Networking - Specialty · AWS
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Option C (existing private VIFs) can be a more operationally efficient solution for setting up a SiteLink between the two data centers.
You make this change on an existing or a new Transit or Private virtual interface (VIF) (regular or hosted VIF) attached to a DXGW. The requirements for creating and configuring a SiteLink-enabled VIF are the same as a regular DX Private or Transit VIF.
Direct Connect SiteLink is a feature that allows you to establish private virtual interfaces (VIFs) between Direct Connect gateways in different geographic locations. It enables you to create a private network connection between your on-premises data centers connected via Direct Connect. In this scenario, the company already has private VIFs connecting its on-premises data centers (in the United States and Europe) to the existing Direct Connect gateway. To set up a private network between these data centers using Direct Connect SiteLink, you can enable SiteLink on the existing private VIFs. This is operationally efficient, as it utilizes the existing connections and configurations.