[ Contents] [ Prev] [ Next] [ Report an Error]

ATM2 OC12/STM4 IQ PIC

Image g001847.gif

Software release
  • JUNOS 5.5 and later
Description
  • One OC12 port
  • Power requirements: 0.41 A/48 V @ 20 W
  • Intelligent queuing (IQ) PICs support fine-grained queuing per logical interface
  • Conforms to ANSI T1.105-1991 and T1E1.2/93-020R1
  • Complies with ATM and SONET/SDH standards
  • 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
  • One 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 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), 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 ARP, which enables routers to automatically learn the IP address of the router on the far end of an ATM PVC
  • Simple Network Management Protocol (SNMP):
    • Management Information Base (MIB) 2 (RFC 1213)
    • ATM MIB (RFC 1695)
    • SONET MIB
  • 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 7
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-L, AIS-P)
  • Bit error rate signal degrade (BERR-SD), bit error rate signal fail (BERR-SF)
  • Bit interleaved parity errors B1, B2, B3
  • Errored seconds (ES-S, ES-L, ES-P), far-end bit errors REI-L, REI-P (CV-LFE, 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)
  • Loss of cell delineation (LOC), loss of frame (LOF), loss of pointer (LOP-P), loss of signal (LOS)
  • Payload mismatch (PLM-P), payload unequipped (UNEQ-P)
  • Remote defect indication (RDI-L, RDI-P)
  • 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 7: Optical Interface Support for ATM2 OC12/STM4 IQ PICs

Parameter Intermediate Reach (IR) Transceiver Multimode Transceiver
Optical interface Single-mode Multimode
Transceiver type Fixed Fixed
Standard Telcordia GR-253 Multivendor agreement
Maximum distance 9.3 miles/15 km 546.8 yards/500 m
Transmitter wavelength 1274 through 1356 nm 1270 through 1380 nm
Average launch power –15 through –8 dBm –20 through –14 dBm
Receiver saturation –8 dBm –14 dBm
Receiver sensitivity –28 dBm –26 dBm

[ Contents] [ Prev] [ Next] [ Report an Error]