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SONET/SDH OC48/STM16 (Multi-Rate) PIC with SFP (M320 Router)

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Software release

  • JUNOS 8.3 and later (Type 2)


  • Rate-selectable using one of the following rates:
    • 1-port OC3c
    • 1-port OC12
    • 1-port OC12c
    • 1-port OC48
    • 1-port OC48c
  • Power requirement: 0.20 A @ 48 V (9.5 W)

Hardware features

  • Multiplexing and demultiplexing
  • Rate policing on input
  • Rate shaping on output
  • Packet buffering, Layer 2 parsing

Software features

  • Optical diagnostics and related alarms
  • Per-port SONET/SDH framing
  • Link aggregation
  • Alarm and event counting and detection
  • Dual-router automatic protection switching (APS)
  • Multiprotocol Label Switching (MPLS) fast reroute
  • Encapsulations:
    • Circuit cross-connect (CCC)
    • Translational cross-connect (TCC)
    • Frame Relay
    • High-Level Data Link Control (HDLC)
    • Point-to-Point Protocol (PPP)

Cables and connectors

You can install any transceiver supported by the PIC. For information about installing and removing transceivers, see the PIC and Transceiver Installation Instructions.

Note: To extend the life of the laser, when a PIC is not being actively used with any valid links, take the PIC offline until you are ready to establish a link to another device. For information about taking a PIC offline, see the request chassis pic offline command in the JUNOS System Basics and Services Command Reference.


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

  • 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)
    • Bit interleaved parity (BIP) error B1, B2, B3
    • Far-end bit error: remote error indication—line (REI-L), far-end line coding violations (CV-LFE)
    • Far-end bit error: remote error indication—path (REI-P), far-end path coding violations (CV-PFE)
    • Loss of frame (LOF)
    • Loss of pointer (LOP-P)
    • Loss of signal (LOS)
    • Payload label mismatch (PLM-P)
    • Payload unequipped (unequipped STS at path level) (UNEQ-P)
    • Remote defect indication—line (RDI-L)
    • Remote defect indication—path (RDI-P)
  • 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—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 frame (LOF)
    • Loss of signal (LOS)
    • Multiplex section—alarm indication signal (MS-AIS)
    • Multiplex section—remote defect indication (MS-RDI)
    • Multiplex section—remote error indication (MS-REI)
  • Error detection:

    • Errored seconds (ES-S, ES-L, ES-P)
    • 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)
    • Severely errored frames (SEF)
    • 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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