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Quality of Service (QoS) per channel: weighted round-Robin (WRR), random early drop
(RED), weighted random early drop (WRED)
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Simple Network Management Protocol (SNMP): OC3 MIB, DS3 MIB, T1 MIB
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Dynamic, arbitrary channel configuration
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Full Bit Error Rate Testing (BERT)
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Encapsulations:
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High-Level Data Link Control (HDLC)
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Frame Relay
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Circuit cross-connect (CCC)
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Translational cross-connect (TCC)
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Point-to-Point Protocol (PPP)
Software features
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Duplex SC/PC connector (Rx and Tx); single-mode fiber intermediate-reach fiberCables and connectors
One tricolor per port:
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Off—Not enabled
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Green—Online with no alarms or failures
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Amber—Online with alarms for remote failures
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Red—Active with a local alarm; router has detected a failure
LEDs
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Alarm indication signal (AIS-L, AIS-P)
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Bit error rate signal degrade (BERR-SD), bit error rate signal fail (BERR-SF)
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Bit interleaved parity errors B1, B2, B3 (CV-S, CV-L, CV-P)
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Errored seconds (ES-S, ES-L, ES-P), far-end bit errors REI-L, REI-P (CV-LFE, CV-PFE),
far-end Block error (FEBE), 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)
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Frame error
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Idle code, idle received
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Loss of frame (LOF), loss of pointer (LOP-P), loss of signal (LOS)
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Out of frame (OOF)
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Payload mismatch (PLM-P), payload unequipped (UNEQ-P)
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Parity bit (P-bit) disagreements
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Path parity error
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Remote defect indication (RDI-L, RDI-P)
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Severely errored framing (SEF), severely errored framing seconds (SEFS-S), Sseverely
errored seconds (SES-S, SES-L, SES-P), unavailable seconds (UAS-L, UAS-P)
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Yellow alarm bit (X-bit) disagreements
Alarms, errors, and
events
Table 12: Optical Interface Support for Channelized OC3 IQ PICs
Intermediate Reach (IR)PIC Type
Single-modeOptical interface
Telcordia GR-253Standard
9.3 miles/15 kmMaximum distance
1274 through 1356 nmTransmit wavelength
38 ■ Channelized OC3 IQ PIC
M120 Internet Router PIC Guide