This is the number of LSP frames with errors we have received. This counts LSPs that arrived with parse-level errors, distinct from ciiSysStatCorrLSPs, which is specifically about corruption discovered after storage, so a rising value here points toward a problem originating upstream at a specific neighbor or on the physical path rather than inside this router's own memory. For example, a steadily incrementing ciiSysStatLSPErrors count correlated with LSPs from one particular neighbor would point the admin toward that neighbor's own LSP generation or the link between the two routers as the source, rather than a local hardware fault.