AirLive Ether-GSH16TW - Manual (Page 34)

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one port of a network switch to another port where the packet
can be studied. It enables the manager to keep close track of
switch performance and alter it if necessary.
Configuring the port mirroring by assigning a source port from
which to copy all packets and a sniffer port where those packets
will be sent.
The selection of the sniffer mode is as follow:
TX (transmit) mode: this mode will duplicate the data transmit
from the source port and forward to the sniffer port.
RX (receive) mode: this mode will duplicate the data that send
to the source and forward to the sniffer port.
Both (transmit and receive) mode: this mode will duplicate
both the data transmit from and data that send to the source port,
then it will forward to the sniffer port.
Figure 22.