This read-only counter holds the upper 32 bits of the 64-bit post-policing ingress CLP=0 cell count (cwacsHCIngXmtCLP0), with the lower 32 bits available in cwacsIngXmtCLP0. An admin combines this with its low-order counterpart to accurately track how much high-priority ingress traffic survives traffic management on a busy channel, without the count wrapping and giving misleading trend data. For example, when comparing pre- and post-policing CLP=0 counts over a long time window on a high-speed channel, the admin would use the high/low counter pairs on both sides to avoid a 32-bit wraparound skewing the comparison.