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On Securestack / Modular devices, does port mirroring occur before or after policy gets applied to user traffic?

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TitleOn Securestack / Modular devices, does port mirroring occur before or after policy gets applied to user traffic?
Question
On Securestack / Modular devices, does port mirroring occur before or after policy gets applied to user traffic?
Environment
  • Securestack
  • N-Series
  • S-Series
  • K-Series
  • 7100-Series
Answer
A port mirror takes place before policy is applied and will mirror all traffic coming into the port
Additional notes
Policy is only applied to ingress packets on a port, so this behavior does not apply to outbound packets, only inbound packets on ports which policy is applied.

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