19.1.3 Notes on using policy-based mirroring
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(1) Coexistence with Port Mirroring
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The monitor session number used for port mirroring cannot be set for policy-based mirroring.
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If the same frame is subject to policy-based mirroring and receiving port mirroring, only the mirror port set by the larger number of monitor session numbers used by each function is mirrored.
(2) Notes on using policy-based mirroring
If a sender filter is set for VLAN interfaces, the filter is also enabled when VLAN ID of mirrored frames matches. If discard is set in the filter, the mirrored frames are discarded.