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Description
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- Four OC3 or STM1 ports
- SONET or SDH is configurable on a per-port granularity
- Power requirement: 0.6 A @ 48 V (28.8 W)
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Hardware features
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- Top row—ports are numbered 0 and 1 from left to
right
- Bottom row—ports are numbered 2 and 3 from left
to right
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Software features
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- Quality of service (QoS) per channel: weighted round-robin
(WRR), random early detection (RED), weighted random early detection
(WRED)
- Enhanced fine-grained queuing per logical interface. See
the JUNOS Class of Service Configuration Guide for more information about class of service
features.
- Packet buffering, Layer 2 parsing
- Local line, remote line, and remote payload loopback testing
- Simple Network Management Protocol (SNMP): OC3 MIB
- Full bit error rate test (BERT)
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Encapsulations:
- Circuit cross-connect (CCC)
- Translational cross-connect (TCC)
- Extended Frame Relay for CCC and TCC
- Flexible Frame Relay
- Frame Relay
- Frame Relay for CCC
- Frame Relay for TCC
- Frame Relay port CCC
- High-Level Data Link Control (HDLC)
- HDLC framing for CCC
- HDLC framing for TCC
- MPLS CCC
- MPLS TCC
- Multilink Frame Relay (MLFR) UNI NNI (MFR FRF.16)
- Point-to-Point Protocol (PPP)
- PPP for CCC
- PPP for TCC
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Cables and connectors
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- Duplex LC/PC connector (Rx and Tx)
- Optical interface support—See Table 25
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LEDs
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One tricolor Status LED 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
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Alarms, errors, and events
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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)
- Loss of clock (LOC)
- Loss of frame (LOF)
- Loss of light (LOL)
- Loss of pointer (LOP)
- Loss of signal (LOS)
- Payload label mismatch (PLM-P)
- Phase lock loop (PLL)
- Remote defect indication—line (RDI-L)
- Remote defect indication—path (RDI-P)
- Remote error indication (REI)
- Payload unequipped (unequipped STS at path level) (UNEQ-P)
- Severely errored frames (SEF)
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SDH alarms:
- 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, B2, B3
- Higher order path—alarm indication signal (HP-AIS)
- Higher order path—far-end receive failure (HP-FERF)
- Higher order path—payload label mismatch (HP-PLM)
- Higher order path—loss of pointer (HP-LOP)
- Higher order path—remote defect indication (HP-RDI)
- Higher order path—unequipped (HP-UNEQ)
- Loss of clock (LOC)
- Loss of frame (LOF)
- Loss of light (LOL)
- Loss of signal (LOS)
- Multiplex section—alarm indication signal (MS-AIS)
- Multiplex section—far-end receive failure (MS-FERF)
- Multiplex section—remote defect indication (MS-RDI)
- Multiplex section—remote error indication (MS-REI)
- Phase lock loop (PLL)
- Remote error indication (REI)
- Severely errored frames (SEF)
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Error detection:
- Errored seconds (ES-S, ES-L, ES-P)
- Severely errored framing seconds (SEFS-S)
- Severely errored seconds (SES-S, SES-L, SES-P)
- Unavailable seconds (UAS-L, UAS-P)
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