Port Mirroring

The port mirroring feature is a convenient tool to use while debugging any complex issue in a network. When the port is mirrored, the switch sends a copy of the packets received and/or packets transmitted from the monitored port to the destination port. This helps to check whether the packet under study was actually received/transmitted by the port. In the networking world, port mirroring has helped to identify the root cause in several long debugging sessions.

Note: The port mirroring feature is for debugging. Enabling port mirroring may slow down the switch in high traffic conditions. Therefore, use this feature with caution in production environments.