Avaya M15-155 User 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 Single-
Mode 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 3
34 4pushbuttons 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

Chapter 1 Overview
4 M15-155 Installation Guide
Resetting the Module
To reset the module, press both the 3
34 4pushbuttons simultaneously and hold
for about 2 seconds, until all LEDs light ON.
Entering Boot Loader Program
To enter Boot Loader Mode, press both the 3
34 4pushbuttons simultaneously
and hold until the OPR LED switches OFF (about 4 seconds).

M15-155 Installation Guide 5
Chapter 2
Installation
Installation Overview
There are several stages involved in the installation of the M15-155:
• Module Installation: Inserting the module in the Avaya M770 chassis and
connecting cables to the module’s ports for connection to other equipment such
as a switch or station.
• Command Line Interface (CLI): Connecting a terminal to the local console to
access the CLI and configuring all parameters. The CLI commands and the
explanation of how to configure the switch are described in the Avaya M770
ATM Switch User’s Guide.
Caution: The M15-155 contains components sensitive to electrostatic discharge.
To prevent ESD damage, always hold the card by its sides only, and do not touch
the circuit board components unless instructed to do so.
Before handling the module or inserting it in the hub, touch the chassis of the hub
to discharge any electrostatic charge on your body.
Note: The recommended Avaya M770 configuration is two M-PS800 units, plus a
third unit for redundancy. Such a configuration supports any number of ATM,
DomainX and Avaya M400 Gate Switch Modules in the chassis.
• One M-PS800 supports 7 M15-155 modules.
• One M-PS500 supports 4 M15-155 modules.
• Three M-PS500 support up to 12 M15-155 modules with no power supply
redundancy.
Laser Safety
The M15-155SF Single-Mode transceiver module and the two M15-155MS Single-
Mode transceiver ports are Class 1 Laser devices. They comply with IEC 825-1 and
Food and Drug Administration (FDA) 21 CFR 1040.10 and 1040.11.
The transceivers must be operated under recommended operating conditions.
CLASS 1
LASER PRODUCT

Chapter 2 Installation
6 M15-155 Installation Guide
Laser Classification
Note: Class 1 lasers are inherently safe under reasonably foreseeable
conditions of operation.
Caution: The use of optical instruments with this product will increase eye hazard.
Usage Restriction
The optical ports of the module must be terminated with an optical connector or a
dust plug when not in use.
Laser Data
• Wavelength: 1300 nm
• Single-Mode Ports:
Transmit power (M15-155SF, M15-155MS SM ports, 9 µm SMF):
Minimum -15 dbm, Maximum -8 dbm
Receive power (M15-155SF, M15-155MS SM ports, 9 µm SMF):
Minimum -30 dbm, Maximum -8 dbm
• Multi-Mode Ports:
Transmit power (M15-155F, M15-155MS MM ports, 62.5 µm and 50 µm MMF):
Minimum -20 dbm, Maximum -14 dbm
Receive power (M15-155F, M15-155MS MM ports, 62.5 µm and 50 µm MMF):
Minimum -31 dbm, Maximum -14 dbm
Installing the Module
The M15-155 modules occupy one slot in the Avaya M770 chassis and can be
inserted into any available position. The Avaya M770 chassis ATM Backplane is
available in two versions: a single-domain or a dual domain ATM Backplane. If
you have the dual-domain version note that slots 1 to 7 and slots 8 to 14 in the
chassis function as two separate, unconnected ATM switching domains. Therefore,
if you intend to use several ATM modules as a single switch they should be on the
same side of the Avaya M770 chassis.
The M15-155 can be installed or removed while power is on.
To install the M15-155:
• Hold the module (shaped like an upside down L) using both hands. The
colored module name panel and LEDs should be on top (see Figure 3).
• Fold out the plastic handles on the top and bottom of the front panel.

Chapter 2 Installation
M15-155 Installation Guide 7
• While holding the module by its handles, place it onto the top and bottom
guide rails in the chassis and gently slide it in by pressing in the middle of the
module. The module should slide in smoothly.
Caution: Ensure that the metal edges of the card (not the PCB) are aligned with the
guide rails. Align the bottom edge first and then the top edge since the module
slots in the bottom rail before the top rail.
• Plug in the module by pressing firmly on the mid-section of the front panel.
Fold down the handles and secure the module using the two screws at the top
and bottom of the front panel. Do not over-tighten the screws.
Note: Even though the modules are hot-swappable, a self initialization period is
required when inserting them into the chassis. Allow about 30 seconds
initialization time after inserting the module for self testing and decompression of
code from Flash to RAM. If the local LECS is in Resilient mode then it will take 2
minutes for the LANE to function (see the Avaya M770 ATM Switch User’s
Guide).
Figure 3 Inserting the Module into the Chassis
Avaya M770
Multifunction Switch
DomainX
Motherboard
ATM
Motherboard
Lower Guide
Rails
Upper Guide
Rails
DomainX or
ATM Module
Plastic
Handle
Plastic
Handle
Module
Name and
LEDs Panel

Chapter 2 Installation
8 M15-155 Installation Guide
Power-on Check
When you plug in the M15-155, wait until first the CPU LED lights and then the
OPR lights steadily before commencing work. If there are several M15-155
modules, one module will be elected as the Master Agent, and the NMA LED on
that module will also light ON. For a detailed explanation of the Master Agent
please refer to the Avaya M770 ATM Switch User’s Guide.
Connecting the Console Terminal
Initial software configuration of the M15-155 is done using a console terminal
connected to the Console connector on the front panel of the module. See the
Appendix for connector pin assignments.
To connect the M15-155 to a console terminal:
1. Turn on the VT100 terminal (or PC terminal emulator in VT100 or VT52 mode)
and set its communication parameters to:
Baud rate: 9600 bps
Start bit: 1
Data bits: 8
Stop bit: 1
Parity: None
Refer to your terminal’s user manual for instructions on how to set these
parameters.
2. Insert the RJ-45 connector of the cable into the Console port on the M15-155
front panel (see Table 3 for connector pinout).
3. Insert the other end of the cable into the terminal’s RS-232 port.
4. Press <Enter> to verify that the cabling process was successful. The system
prompt appears (M770sXX:/>).
5. The CLI commands and the explanation of how to configure the switch are
described in the Avaya M770 ATM Switch User’s Guide.

M15-155 Installation Guide 9
Chapter 3
Troubleshooting
Use the table below to troubleshoot common problems. If you still experience
problems, please contact Avaya Communication Technical Support.
Problem Probable Cause Solution
BIT LED remains ON
after power up or reset
Module self-test failed i) Check that the module is
correctly and fully inserted into
the M770 ATM switch chassis
ii) Reboot or power-up again
All LEDs remain ON
after power up or reset
Module fault Reboot or power-up again
Port LED blinks while
function LED is on
LNK
Link failure Check the fiber connection to the
port
OPR LED does not
light ON after reboot
(after more than 30
seconds)
The module may be in
Monitor mode because
of a Long Reset
Reset the module again but this
time make a Short Reset (less than 4
seconds)

Chapter 3 Troubleshooting
10 M15-155 Installation Guide
Software Download Troubleshooting
The following are Activity Status messages that can appear during software
download, their meanings, and suggested solutions.
Activity Status
message
Description Suggested action
File format unknown File format
unknown
Ensure that the correct agent software file
is being downloaded to the agent
File not found Failure of TFTP
Get
Type in the correct path and filename
Server is unreachable
or
Server timeout
Failed to find the
server after 1
minute
Check that you typed in the correct TFTP
Server IP address. Ensure the server is
accessible to the agent by typing
ip ping <ip_address_of_agent>.
The router is defined in the IP Gateway
menu.
To many Boot Images
in Flash
Erase one of the Boot Images from Flash
memory
To many Main Images
in Flash
Erase one of the Software Version from
Flash memory
Access Violation You do not have
the required
access permission
You must obtain the required access
permission

M15-155 Installation Guide 11
Appendix
Connector Pin Assignments
The following table shows the wiring connection to the Terminal port of the
M15-155 module.
Table 3 M15-155 Terminal Port Wiring Connections
DCE Name DTE DTE
RJ-45 PINS DB-25 PINS DB-9 PINS
1 no connection
2 TXD 3 2
3 RCV 2 3
4 DTR 20 1
5 GND 7 5
6 no connection
7 CTS 4 7
8 RTS 5 8

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