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E3 IQ PIC (M320 Router)

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Software release

  • JUNOS 6.2 and later (Type 1)

Description

  • Four E3 ports
  • Power requirement: 0.38 A @ 48 V (18 W)
  • 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)
  • JUNOS Release 7.0 or later is required 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

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