This is the native 64-bit counter of valid CLP=1 (discard-eligible) cells received in the ingress direction of this channel before the traffic management entity. It gives a single-read, full-precision measure of how much best-effort ingress traffic this channel is being offered, which an admin can compare against the CLP=0 volume to understand the traffic priority mix arriving on the connection. A capacity planner would use this alongside cwacsHCIngRcvCLP0 to decide whether the channel's policing parameters need adjustment for its actual CLP1 load.