<p>Creates a Traffic Mirror session.</p> <p>A Traffic Mirror session actively copies packets from a Traffic Mirror source to a Traffic Mirror target. Create a filter, and then assign it to the session to define a subset of the traffic to mirror, for example all TCP traffic.</p> <p>The Traffic Mirror source and the Traffic Mirror target (monitoring appliances) can be in the same VPC, or in a different VPC connected via VPC peering or a transit gateway. </p> <p>By default, no traffic is mirrored. Use <a href="https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateTrafficMirrorFilter.htm">CreateTrafficMirrorFilter</a> to create filter rules that specify the traffic to mirror.</p>

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