Per its DESCRIPTION, this Counter64 is a running tally of Section-layer B1 BIP-8 parity block errors, the raw bit-error count that the Ess/Sess second-counters are derived from. Because this is a lifetime counter that only resets on an explicit clear, a reading here means raw Section-layer parity-block bit errors have been accumulating on this OC-n (SONET) port, accumulated over the port's entire service life, not merely since the last reboot. For example, 15000 accumulated code violations against zero errored seconds elsewhere in this table would be a contradiction worth double-checking, since violations should never outpace errored seconds.