Posted On: Dec 10, 2020

VPC Reachability Analyzer is a new feature that enables you to perform connectivity testing between resources in your virtual private clouds (VPC). With Reachability Analyzer, you can quickly troubleshoot connectivity issues caused by misconfiguration, and proactively verify that your configuration matches your network connectivity intent.

Reachability Analyzer enables you to diagnose connectivity issues by simply performing a reachability analysis between a given source and destination in your VPC network. You can run a reachability analysis between Elastic Network Interfaces (ENIs) in the same VPC or across two VPCs connected through a peering connection. You can also run a reachability analysis between ENIs and gateways, including internet gateways, virtual private gateways, and transit gateways. When the destination is not reachable, Reachability Analyzer will identify the blocking configuration setting, such as a missing security group rule or routing table entry. Using this information, you can easily distinguish between a configuration and an underlying network issue. When the destination is reachable, Reachability Analyzer will also provide hop-by-hop details of the virtual network path between the source and destination based on the configured routes. You can run a reachability analysis to validate your configuration and isolate any connectivity issues before running production workloads. You can also save and run reachability analyses on an ongoing basis and check if the connectivity intent captured by them is impacted by any configuration changes.

To get started, select a source and destination using the AWS CLI, SDK or Console, and view the connectivity status between them.

Reachability Analyzer in VPC is generally available in the following AWS Regions: US East (N. Virginia), US East (Ohio), US West (Northern California), US West (Oregon), Africa (Cape Town), Asia Pacific (Hong Kong), Asia Pacific (Mumbai), Asia Pacific (Seoul), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), Canada (Central), Europe (Frankfurt), Europe (Ireland), Europe (London), Europe (Milan), Europe (Paris), Europe (Stockholm), South America (Sao Paulo), and the Middle East (Bahrain). To learn more about Reachability Analyzer, please visit documentation. To view VPC Reachability Analyzer prices, visit Amazon VPC Pricing.