Test AWS network communications with the VPC Reachability Analyzer

The resources you create in the AWS cloud use software defined networking (SDN) to communicate with each other. This network architecture is relatively simple at first, but it can quickly become complex as you create more and more resources. As your complexity increases, you may find that you have difficulty allocating some resources to communicate with others. Fortunately, Amazon offers a tool called the VPC Reachability Analyzer.

The reachability analyzer is a simple tool that tests whether traffic can flow from a specific source resource to a specific target resource. If the test fails, you can use the information provided by the tool to isolate the cause of the problem.

To perform an availability test, first select the VPC option from the AWS list of …


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