Advanced hybrid routing scenarios with AWS Cloud WAN and AWS Direct Connect
Networking & Content Delivery Blog
This article discusses advanced hybrid routing scenarios using AWS Cloud WAN and AWS Direct Connect. It covers three common routing scenarios and provides guidance on BGP route advertisements, route selection, traffic flows, and failure scenarios.
Specifically, the article covers:
- Scenario 1: A single on-premises location with two AWS Direct Connect connections in one AWS Region, advertising a unique IP prefix to AWS
- Scenario 2: Two on-premises locations with two AWS Direct Connect connections each in two AWS Regions, each advertising unique, non-overlapping IP prefixes to AWS
- Scenario 3: Two on-premises locations with two AWS Direct Connect connections each in two AWS Regions, both advertising the same IP prefix to AWS, with connectivity between the on-premises locations
- Considerations and best practices for optimizing routing in these multi-Region hybrid networks, including the use of BGP communities, MED, and local preference
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