One tricolor per port:
■Off—Not enabled
■Green—Online with no alarms or failures
■Amber—Online with alarms for remote failures
■Red—Active with a local alarm; router has detected a failure
LEDs
■SONET alarms:
■Alarm indication signal—line (AIS-L)
■Alarm indication signal—path (AIS-P)
■Bit error rate signal degrade (BERR-SD)
■Bit error rate signal fail (BERR-SF)
■Bit interleaved parity (BIP) error B1
■Bit interleaved parity (BIP) error B2
■Bit interleaved parity (BIP) error B3
■Loss of frame (LOF)
■Loss of pointer (LOP-P)
■Loss of signal (LOS)
■Far-end bit error: remote error indication—line (REI-L) (CV-LFE)
■Far-end bit error: remote error indication—path (REI-P) (CV-PFE)
■Payload mismatch (path label mismatch) (PLM-P)
■Payload unequipped (unequipped STS at path level) (UNEQ-P)
■Remote defect indication—line (RDI-L)
■Remote defect indication—path (RDI-P)
■SDH alarms:
■Multiplex section alarm indication signal (MS-AIS)
■Administrative unit alarm indication signal (AU-AIS)
■Bit error rate signal degrade (BERR-SD)
■Bit error rate signal fail (BERR-SF)
■Bit interleaved parity (BIP) error B1
■Bit interleaved parity (BIP) error B2
■Bit interleaved parity (BIP) error B3
■Loss of frame (LOF)
■Loss of pointer (HP-LOP)
■Loss of signal (LOS)
■Multiplex section remote error indication (MS-REI)
■Higher path label mismatch (HP-PLM)
■Higher path unequipped (HP-UNEQ)
■Multiplex section remote defect indication (MS-RDI)
■Higher path remote defect indication (HP-RDI)
■Errored seconds (ES-S, ES-L, ES-P), far-end errored seconds (ES-LFE, ES-PFE), far-end
severely errored seconds (SES-LFE, SES-PFE), far-end unavailable seconds (UAS-LFE,
UAS-PFE)
■Severely errored framing (SEF), severely errored framing seconds (SEFS-S), severely
errored seconds (SES-S, SES-L, SES-P), unavailable seconds (UAS-L, UAS-P)
Alarms, errors, and
events
64 ■SONET/SDH OC48c/STM16 PIC
M20 Internet Router PIC Guide