This counts how many entries in this port's own address table belong to devices physically attached to the segment on that same port, as opposed to devices reached through other ports. An admin uses this to understand the composition of a port's learned station population, distinguishing genuinely local hosts from remote ones learned via cat2600TsPortRemoteStations. A wiring-closet access port would typically show mostly local stations, while an uplink port to the core would show mostly remote ones.