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Image g001848.gif

Software release
  • JUNOS 6.2 and later (Type 1)
  • Two OC3 ports
  • Power requirement: 0.41 A @ 48 V (20 W)
  • Fine-grained queuing per logical interface
  • Conforms to ANSI T1.105-1991 and T1E1.2/93-020R1
  • ATM and SONET/SDH standards compliant
  • Alarm and event counting and detection
  • Compatible with well-known ATM switches
  • ATM switch ID, which displays the switch IP address and local interface name of the adjacent Fore ATM switches
Hardware features
  • Single 3010 SAR for segmentation and reassembly into 53 byte ATM cells
  • High-performance parsing of SONET/SDH frames
  • ASIC-based packet segmentation and reassembly (SAR) management and output port queuing
  • 64 MB SDRAM memory for ATM SAR
  • Packet buffering, Layer 2 parsing
Software features
  • Circuit cross-connect (CCC) for leveraging ATM access networks
  • User-configurable virtual circuit (VC) and virtual path (VP) support
  • Support for idle cell or unassigned cell transmission
  • OAM fault management processes alarm indication signal (AIS), remote defect indication (RDI) cells, and loop cells
  • Point-to-point and point-to-multipoint mode Layer 2 counters per VC and per VP
  • Local and remote loopback
  • ATM Inverse Address Resolution Protocol (ARP), which enables routers to automatically learn the IP address of the router on the far end of an ATM permanent virtual circuit (PVC)
  • Simple Network Management Protocol (SNMP):
    • Management Information Base (MIB) 2 (RFC 1213)
    • ATM MIB (RFC 1695)
  • Unspecified bit rate (UBR), non-real-time variable bit rate (VBR), and constant bit rate (CBR) traffic shaping
  • Per-VC or per-VP traffic shaping
  • Support for F4 OAM cells
  • Support for 16 bit VCI range
Cables and connectors
  • Duplex SC/PC connector (RX and TX)
  • Optical interface support—See Table 5
LEDsOne 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—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 cell delineation (LOC)
  • Loss of frame (LOF)
  • Loss of pointer (LOP-P)
  • Loss of signal (LOS)
  • Payload mismatch (PLM-P)
  • Payload unequipped (unequipped STS at path level) (UNEQ-P)
  • Remote defect indication—line (RDI-L)
  • Remote defect indication—path (RDI-P)
  • Error detection:
    • Bit interleaved parity errors B1, B2, B3
    • Errored seconds (ES-S, ES-L, ES-P)
    • Far-end bit errors, remote error indication—line (REI-L), far-end line coding violations (CV-LFE)
    • Far-end bit errors, remote error indication—path (REI-P), far-end path coding violations (CV-PFE)
    • 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 framing (SEF)
    • Severely errored framing seconds (SEFS-S)
    • Severely errored seconds (SES-S, SES-L, SES-P)
    • Unavailable seconds (UAS-L, UAS-P)

Table 5: Optical Interface Support for ATM2 OC3 IQ PICs

ParameterIntermediate Reach (IR) Multimode
Optical interfaceSingle-mode Multimode
Transceiver typeFixedFixed
StandardTelcordia GR-253 Multivendor agreement
Maximum distance 9.3 miles/15 km1.2 miles/2 km
Transmitter wavelength1260 through 1360 nm1270 through 1380 nm
Average launch power–15 through –8 dBm–20 through –14 dBm
Receiver saturation–8 dBm–14 dBm
Receiver sensitivity–28 dBm–30 dBm

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