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Mirroring ports on Mikrotik

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Most Mikrotik routers have switch chips. On most models you can use the switch chip to mirror a port to another port on the same switch chip. On the RB1100AHx2 there are two Atheros 8327 switch chips. One is ports eth1-eth5 and the other is eth6-eth10. Mikrotik has a wiki page on what models have which switch chip, and what is supported . To mirror all eth1 to eth2 traffic from the CLI: [admin@Mikrotik] /interface ethernet switch> print Flags: I - invalid   #   NAME      TYPE          MIRROR-SOURCE    MIRROR-TARGET    SWITCH-ALL-PORTS  0   switch2   Atheros-8327  none             none              1   switch1   Atheros-8327  none             none             [admin@Mikrotik] /interface ethernet switch> set mirror-source=ether1 mirror-target=ether2 0 [admin@Mikrotik] /interface ethernet switch> print Flags: I - invalid   #   NAME               TYPE          MIRROR-SOURCE              MIRROR-TARGET              SWITCH-ALL-PORTS  0   switch2