Will the mirroring be done in the switch chip hardware? Or does the CPU do the mirroring?
When mirroring I seem to experience a high cpu load and my maximum download spead drops to ~65 mbit
/interface ethernet switch
set egress-mirror0=none,original egress-mirror1=none,original fdb-uses=\
mirror1 ingress-mirror0=ether13 ingress-mirror1=none vlan-uses=\
/interface ethernet switch port
set 4 dscp-based-qos-dscp-to-dscp-mapping=no ingress-mirror-to=mirror0
Is my config wrong or is this to be expected? I'd like to run ntopng permanently on a mirror of my internet feed but only if the cpu load is reasonable.
Edit: My bad!! If you forget to set the master port of this monitor port the CPU will be impacted... If you however do set the master port, it will work without the high load!