This read-only INTEGER counts configuration-loss events on this port that occurred after the port had already completed its ring join process and then lost communication, distinguishing established-then-lost connectivity from a port that never successfully joined the ring in the first place. This is the raw event count that feeds into the ciscoTsPortCfgCfgLossThres/Interval auto-disable logic for this port. A port with a nonzero, climbing count here on an otherwise-configured link points at an intermittent physical or ring-integrity problem worth investigating via ciscoTsPortStatsCfgLossRC for the specific cause.