Avaya M15-155 Installation Manual

Catalog No. 130030 Rev. F. July, 2001

Avaya

Installation Guide

M15-155

ATM SWITCHING MODULES

FOR THE AVAYA M770

M15-155 Installation Guide 1

Chapter 1

Overview

This installation guide is divided into the following main sections:

• Overview: A general description of the Avaya M15-155F, M15-155SF and
M15 155MS modules, including interfaces, LED indicators, a front panel
illustration and a list of hardware features.

• Installation: Step-by-step instructions for installing the M15-155 in an
Avaya M770 ATM switch.

• Troubleshooting: Suggested solutions for commonly encountered problems.

• Appendix: Port connector pin assignments.

Note: The Command Line Interface (CLI) software setup and control of the
Avaya M770 ATM modules is described in the Avaya M770 ATM Switch User’s
Guide.

Description

There are three 15-port ATM OC-3 modules for the Avaya M770 Multifunction
switch: the M15-155F Multi-Mode Fiber (MMF) module, the M15-155SF Single­Mode Fiber (SMF) module and the combined M15-155MS module which has 2
Single-Mode and 13 Multi-Mode ports. They provide connection for OC-3 ATM
servers and end stations and act as a backbone between switches.

The M15-155 modules and other M770 ATM switching modules comprise a fully
functional ATM switch within the Avaya M770 Multifunction chassis. There is no
need for a central ATM switching or processing module. The only central module
required is the M-SPV/M-SPX/M-SPS Supervisor module (one or two for
redundancy) for clock generation for all the Avaya M770 ATM modules.

The M770 ATM switch is a high-performance distributed Asynchronous Transfer
Mode (ATM) switch that is designed for building campus backbone applications,
high-performance centralized servers, and power-user environments. Its advanced
architecture can support very high traffic loads with no data loss or breaks in
communication. The M770 ATM Switch also implements LAN Emulation (LANE)
components. LANE enables legacy LAN applications to use a transparent ATM
transport medium. In this way, end-stations on existing LANs can communicate
with ATM end-stations.

The Avaya M770 supports a range of ATM switching modules that enable you to
customize the switch for different applications in your network. The M770 ATM
switch is designed as a software-upgradeable product, so that you can expand the
functionality of the switch by downloading new software.

The M15-155 is manageable with CajunView™, Avaya’s family of SNMP network
management systems, or any other SNMP-based management system.

Chapter 1 Overview

2 M15-155 Installation Guide

Features

Note: For Software Features please refer to the Avaya M770 ATM Switch User’s

Guide.

• M15-155F — 15 ATM OC-3 Multi-Mode Fiber (MMF) ports with SC connectors

(3 m to 2000 m cable lengths)

• M15-155SF — 15 ATM OC-3 Single-Mode Fiber (SMF) ports with SC connectors
(3 m to 15 km cable lengths)

• M15-155MS — 2 ATM OC-3 Single-Mode Fiber ports with (SMF – 3 m to 15 km
cable lengths) and 13 Multi-Mode Fiber ports (MMF – 3 m to 2000 m cable
lengths) with SC connectors.

• 32K cells output buffers

• 16K cells input buffers

• Low Cell Transfer Delay through the switch is 20 µsec (in port to out port)

• Low Cell Variation Delay through the switch is 5 µsec (in port to out port)

• Clock Generation /Clock Propagation of clock to all other ports

• Supports CBR, VBR-rt, VBR-nrt, ABR, UBR Classes of Service

• Supports AAL1, AAL2, AAL3/4 and AAL5 classes

• Cell Loss Priority (CLP) discard

• Early Packet Discard (EPD) and Partial Packet Discard (PPD) for AAL5

• ABR with EFCI Tagging

• Hot swapping of modules

• Line Indication – Loss of Signal (LOS), Remote Defect Indicator (RDI), Transmit

and Receive traffic

• 32K Virtual Channels per port and 120K Virtual Channels per module. The
Software version may limit the number of the VCs currently supported.

• LANE servers: LECS, BUS, LES, on each module. LEC on elected module.

• Idt R4650 (100 MIPS) RISC processor, 32 Mbyte RAM and 4 Mbyte Flash on

EACH module for fast call set up and protocol processing.

Chapter 1 Overview

M15-155 Installation Guide 3

Front Panel Components

Table 1 M15-155 Front Panel Diagnostic LEDs

LED
Indicator

Description State Meaning

OPR Module

Operational
Status

ON
OFF
Blink

Module is OK
Module is not operational
Module Fault

BIT Built-In Test ON

OFF

BIT in progress
BIT not in progress

NMA Network

Management
Agent

ON

OFF

This module is the Master Agent

Not currently the Master Agent

ETM For future

use

– –

SRV For future

use

– –

Function LED* Port LED (1 … 15, CPU)

LNK

(default)

Port Status ON

OFF
1 Blink

Port is enabled and Link OK
Port is disabled
Link failure (LOS or RDI)

Tx Transmit to

line

ON
OFF

Data transmitted to line
No activity on port

Rx Receive from

line

ON
OFF

Data received from line
No activity on port

LOS Loss of Signal ON

OFF

Loss of Signal State
No LOS

RDI Remote

Defect
Indicator

ON
OFF

Remote defect (RDI) detected
No RDI

* Use the

334

4

pushbuttons on the front panel to select the

Function to be displayed on the Port LEDs.

Table 2 M15-155 Front Panel Ports

Port/Connector Function

Ports 1 and 2 M15-155F – ATM OC-3 MMF ports

M15-155SF and M15-155MS – ATM OC-3 SMF ports

Ports 3 … 15 M15-155F and M15-155MS – ATM OC-3 MMF ports

M15-155SF – ATM OC-3 SMF ports

Console
Connector

Terminal setup of M15-155