The traffic of specified subscribers will be mirrored (copied) to a designated VLAN and sent to the NPB. The traffic direction is preserved: incoming traffic from the OUT to IN interface will be duplicated in the VLAN and sent from the IN interface, while outgoing traffic from the IN to OUT interface will be duplicated in the VLAN and sent from the OUT interface.

To configure mirroring, go to the section System Global State → Traffic mirroring: