Software release
- JUNOS 6.1 and later
Description
- Four E3 ports
- Power requirement: 0.38 A @ 48 V (18 W)
- Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface.
Hardware features
- Clear-channel (34.368-Mbps) and subrate E3
- Unframed or ITU G.751 framing
- Data Service Unit (DSU) functionality
- Subrate and scrambling:
- Digital Link/Quick Eagle
- Kentrox
- HDB3 line encoding
- Full Bit Error Rate Testing (BERT)
- Local and remote loopback testing
Software features
- Quality of Service (QoS) per port: Weighted Round Robin (WRR), Random Early Drop (RED), Weighted Random Early Drop (WRED)
- Simple Network Management Protocol (SNMP): E3 MIB, QoS MIB
- Input policing and output shaping
- Provider-side rate limiting
- Full data link connection identifier (DLCI) range with sparse channel numbering
- Per-DLCI queues with weighted deficit round robin and strict priority
- Encapsulations:
- High-level Data Link Control (HDLC)
- Frame Relay
- Multiprotocol Label Switching (MPLS) circuit cross-connect (CCC)
- MPLS translational cross-connect (TCC)
- Point-to-Point Protocol (PPP)
- JUNOS release 7.0 or later is recommended to configure graceful Routing Engine switchover (GRES).
Cables and connectors
- Standard E3 BNC coaxial cable interfaces
LEDs 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
Alarms, errors, and events
- Alarm indication signal (AIS)
- Equipment failure (does not affect service)
- Frame error
- Line code violation
- Loss of signal (LOS)
- Out of frame (OOF)
- Yellow alarm bit (A-bit) disagreements
Instrumentation (counters)
- Layer 2 per-queue packet and byte counters
