Understand traffic mirror session concepts
A traffic mirror session establishes a relationship between a traffic mirror source and a traffic mirror target. Traffic mirror sessions are evaluated based on the ascending session number that you define when you create the session.
A traffic mirror session contains the following resources:
Each packet is mirrored once. However, you can use multiple traffic mirror sessions on the same mirror source. This is useful if you want to send a subset of the mirrored traffic from a traffic mirror source to multiple tools. For example, you can filter HTTP traffic in a higher priority traffic mirror session and send it to a specific monitoring appliance. At the same time, you can filter all other TCP traffic in a lower priority traffic mirror session and send it to another monitoring appliance.
Traffic mirror sources
A traffic mirror source is the network interface of type interface. For example,
a network interface for an EC2 instance or an RDS instance.
A network interface can't be a traffic mirror target and a traffic mirror source in the same traffic mirror session.
Traffic Mirroring is not available on all instance types.
Instance types
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Traffic Mirroring is not available on the following virtualized Nitro instance types:
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General purpose: M8g, M6a, M6i, M6id, M6idn, M6in, M7a, M7g, M7gd, M7i, M7i-flex
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Compute optimized: C8g, C6a, C6gd, C6gn, C6i, C6id, C6in, C7a, C7g, C7gd, C7gn, C7i
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Memory optimized: R8g, R6a, R6i, R6id, R6idn, R6in, R7a, R7g, R7gd, R7i, R7iz, X8g, X2idn, X2iedn, X2iezn
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Storage optimized: I4g, I4i, Im4gn, Is4gen
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Accelerated computing: Inf2, P5, Trn1, Trn1n
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High-performance computing: Hpc6a, Hpc6id, Hpc7a, Hpc7g
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Traffic Mirroring is not available on bare metal instances.
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Traffic Mirroring is available only on the following non-Nitro instances types: C4, D2, G3, G3s, H1, I3, M4, P2, P3, R4, X1, and X1e. Note that this does not include T2 instances.
