■
Quality of Service (QoS) per channel: weighted round-Robin (WRR), random early drop
(RED), weighted random early drop (WRED)
■
Simple Network Management Protocol (SNMP): OC3 MIB, DS3 MIB, T1 MIB
■
Dynamic, arbitrary channel configuration
■
Full Bit Error Rate Testing (BERT)
■
Encapsulations:
■
High-Level Data Link Control (HDLC)
■
Frame Relay
■
Circuit cross-connect (CCC)
■
Translational cross-connect (TCC)
■
Point-to-Point Protocol (PPP)
Software features
■
Duplex SC/PC connector (Rx and Tx); single-mode fiber intermediate-reach fiberCables and connectors
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
■
Alarm indication signal (AIS-L, AIS-P)
■
Bit error rate signal degrade (BERR-SD), bit error rate signal fail (BERR-SF)
■
Bit interleaved parity errors B1, B2, B3 (CV-S, CV-L, CV-P)
■
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)
■
Frame error
■
Idle code, idle received
■
Loss of frame (LOF), loss of pointer (LOP-P), loss of signal (LOS)
■
Out of frame (OOF)
■
Payload mismatch (PLM-P), payload unequipped (UNEQ-P)
■
Parity bit (P-bit) disagreements
■
Path parity error
■
Remote defect indication (RDI-L, RDI-P)
■
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)
■
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
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