D-Link DES-1316 Product Manual - Page 36
Trunk Settings
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Figure 20. Trunk Settings Be sure that the selected trunk setting port is connected to the device with a same VLAN group. Mirror Setting Port Mirroring is a method of monitoring network traffic that forwards a copy of each incoming and/or outgoing packet from 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 selections of the sniffer mode is as follows: TX (transmit) mode: This mode will duplicate the data transmitted from the source port and forward it to the sniffer port. RX (receive) mode: This mode will duplicate the data sent to the source and forward it to the sniffer port. 36