A network tap is an external device that creates a “copy” of the traffic for use by various monitoring devices. It allows port mirroring. The traffic on the network is unaffected by the act of monitoring or port mirroring. Because the monitoring is performed by a device external to the network, on a copy of the traffic, this deployment is often referred to as ‘out of band’. Taps can be Active or Passive.
These monitoring/tap ports provide a fixed tap configuration. N1(Rx) is connected to T1, N2(Rx) is connected to T2.
In case of power failure, while the network traffic flow is maintained, the integrated active tap point loses its visibility.
These monitoring/tap ports also provide a fixed tap configuration. N1(Tx) is connected to monitoring port M1, N2(Tx) is connected to monitoring port M2.
In case of power failure, the monitoring/tap ports’ traffic flow is maintained, since they are directly connected to the corresponding network ports via passive splitters.