This read-only counter tallies cells discarded because the shared egress port queue (for this channel's port and service type) crossed its CLP discard threshold, representing selective discard of CLP-tagged cells at the port-shared-queue level rather than an outright full-queue discard. Admins use this to see whether the port-level CLP hysteresis mechanism is proactively shedding lower-priority traffic before the shared egress queue fills completely (which would instead show up in chanEgrPortQfullDiscardCells). For example, a channel showing growth in this counter but not in chanEgrPortQfullDiscardCells indicates the port's CLP threshold discard is successfully protecting the queue from ever fully overflowing.