The AWS DMS diagnostic support AMI provides tools to diagnose network issues that can impact database migration performance, including testing for packet loss, latency, and MTU mismatches between the source, target, and DMS replication instance.

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<p>This article discusses how to troubleshoot networking issues during database migration with the AWS Database Migration Service (DMS) diagnostic support AMI.</p>
<p>Specifically, the article covers:</p>
<ul>
<li>Typical symptoms of network connectivity issues during database migration</li>
<li>Overview of the AWS DMS diagnostic support AMI solution</li>
<li>Prerequisites and steps to launch the solution with AWS CloudFormation</li>
<li>How to access the diagnostic EC2 instance via SSH</li>
<li>An example of using the AMI to diagnose high network latency causing replication lag</li>
<li>Considerations and best practices for dealing with network issues and migrating large LOBs</li>
<li>How to clean up resources after using the diagnostic AMI</li>
</ul>
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Troubleshoot networking issues during database migration with the AWS DMS diagnostic support AMI

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