Software release

• Junos OS Release 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 test (BERT)
• Local and remote loopback testing

Software features

• Quality of service (QoS) per port: weighted round-robin (WRR), random early detection (RED), weighted random early detection (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
  • Circuit cross-connect (CCC)
  • Translational cross-connect (TCC)
  • Point-to-Point Protocol (PPP)

Cables and connectors

• Standard E3 BNC coaxial cable interfaces

LEDs

One tricolor per port:

• Off—Not enabled
• Green—Online with no alarms or failures
• Yellow—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