This read-only Counter64 counts bytes received on this Carrier Ethernet PM instance that the switch accepted — bytes that passed ingress classification and policing rather than being dropped or re-marked. Admins read it alongside the Yellow and Dropped byte counters on the same flow point to see what fraction of offered load is within its committed profile and actually getting forwarded; because it is drawn from the current, still-open 24-hour bin for today, the number keeps climbing until midnight rollover, so it should be read as "so far today" rather than a finished daily total. On a 10 Gbps aggregation trunk carrying multiple EVCs, this might read 714,000 bytes over today so far — a number an admin would divide by the bin length to sanity-check it against the port's 10,000,000,000-bps ceiling.