This read-only Counter32 counts the total number of errors the Link interface has received before Forward Error Correction has had a chance to correct them. Because this figure reflects the raw error rate on the radio path, an admin uses its growth rate to judge how hard FEC is having to work and whether the underlying RF path is degrading. For example, a steady climb in wvlinkNoOfErrors during a storm, even while the corrected-traffic counters stay clean, indicates the FEC is successfully masking a worsening raw signal.