If the “mirror” is only to detect a problem - try a “packet sniffer”
http://wiki.mikrotik.com/wiki/Manual:Tools/Packet_Sniffer
and read this: http://forum.mikrotik.com/t/using-packet-sniffer-with-streaming-server/14734/1
If the “mirror” is only to detect a problem - try a “packet sniffer”
http://wiki.mikrotik.com/wiki/Manual:Tools/Packet_Sniffer
and read this: http://forum.mikrotik.com/t/using-packet-sniffer-with-streaming-server/14734/1