This Counter32 object counts good packets transmitted by a port that were addressed to a unicast address. An admin profiling normal outbound traffic on a switch port uses this counter, together with the broadcast and multicast transmit counters, to confirm most traffic being sent out is direct point-to-point communication as expected. For example, comparing this counter's growth against txBroadcastPkts on a server-facing port would confirm the bulk of outbound traffic is legitimate unicast application data.