To copy traffic from one port to another without allowing bidirectional traffic, you should use port mirroring. This feature is explicitly designed for one-way duplication of data for monitoring and does not interfere with network loops or trunking VLAN configurations.
To copy the traffic from a single port to a different port while preventing bidirectional traffic, you should use port mirroring. This switch feature allows the duplication of network packets from one port (source port) to another port (destination port) for monitoring purposes. It's commonly used for network diagnostics and troubleshooting. Port mirroring ensures that the data is only copied one way, thus avoiding the chance of creating loops or other issues.
In comparison, options like Power over Ethernet (PoE), Spanning Tree Protocol (STP), and trunking serve different network functions. PoE delivers power over network cables, STP prevents network loops in a Layer 2 network, and trunking allows multiple VLANs to coexist on a single physical link. Therefore, port mirroring is the correct feature to use for the described requirement.