Installation guide

A-19

Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases

OL-1165-06

Appendix A System Specifications

ATM Interface

This section contains general ATM interface specifications. For specifications that apply to the UXM-E

only, see the “ATM Layer Specification for the UXM-E” section on page A-5.

Control leads supported: SDI back card: Per interface standards

SDI back card: Up to 7 in each direction for fast EIA

LDI back card: 3 in each direction for DCE and DTE for each port

Control lead sync

w/data:

Control leads are sampled every 50 ms. A change normally

follows data within 100 to 1000 msec. Fast EIA lead is within

1 byte.

Data clocking: Synchronous and isochronous clocking

Normal, looped, and split clock configurations

Pleisochronous

clock range:

± 2 percent of nominal data rate

Type of Service: Permanent virtual circuit (PVC)

Interface Types: UNI and NNI per ITU-T I.361 and I.363

Data Rates: T1, E1, T3, E3, OC3 (STM-1)

ATM Layer: Physical Layer Convergence Protocol (PLCP) per AT&T

publication TA-TSY-00772 and 000773 for T3; ITU I-361 with

HEC for E3

Cell Rate: T1: 3622

E1: 4830

T3: 96,000 cps in PLCP mode, 104268 cps in HEC mode.

E3: 80,000 cps

OC-3: 353,207

Adaptation Layer: AAL5

Number of PVCs per card: 255

VPI Addressing Range: 0 to 255

VCI Addressing Range: 0 to 65535

Traffic Queues: CBR, VBR, and ABR (except ALM/A)

Management Protocol: LMI and ILMI