Cabletron Systems IRM-2/LM User Manual

IRM2/LM™

IRM2 LOCAL MANAGEMENT

USER’S MANUAL

CABLETRON SYSTEMS, P.O. BOX 5005, ROCHESTER, NH 03867-5005

NOTICE

Cabletron Systems reserves the right to make changes in specifications
and other information contained in this document without prior notice.
The reader should in all cases consult Cabletron Systems to determine
whether any such changes have been made.

The hardware, firmware, or software described in this manual is subject to
change without notice.

IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR
ANY INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL
DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED TO
LOST PROFITS) ARISING OUT OF OR RELATED TO THIS
MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN IF
CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR
SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.

© Copyright January 1993
Cabletron Systems Inc.
P.O. Box 5005
Rochester, NH 03867-5005

All Rights Reserved
Printed in the United States of America

Order Number: 9030315-02

IRM2/LM, MMAC, IRM2

DEC, VT220

and

VT320

are trademarks of Cabletron Systems Inc.

are trademarks of Digital Equipment

Corporation.

Hayes

ETHERNET

is a trademark of Hayes Microcomputer Products Inc.

is a trademark of Xerox, Inc.

Printed on Recycled Paper

i

FCC Notice

FCC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject
to the following two conditions: (1) this device may not cause harmful
interference and (2) this device must accept any interference received,
including interference that may cause undesired operation.

NOTE

: This equipment has been tested and has been found to comply
with the limits for a Class A digital de vice, pursuant to Part 15 of the FCC
rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial
environment. This equipment uses, generates, and can radiate radio
frequency energy and if not installed in accordance with the operator’s
manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause
interference in which case the user will be required to correct the
interference at his own expense.

WARNING: Changes or modifications made to this device which are not
expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment.

DOC NOTICE

This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital appartus set out in the Radio Interference
Regulations of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant les limites applicables aux appareils numériques de la class A
prescrites dans le Règlement sur le brouillage radioélectrique édicté par le
ministère des Communications du Canada.

ii

CONTENTS

CHAPTER 1 INTRODUCTION

1.1 USING THIS MANUAL................................................................1-1

1.2 GETTING HELP..........................................................................1-2

1.3 ABOUT IRM2 LOCAL MANAGEMENT.......................................1-2

1.4 RELATED MANUALS..................................................................1-3

1.5 SUGGESTED READING.............................................................1-3

CHAPTER 2 GETTING STARTED

2.1 LOCAL MANAGEMENT FROM A TERMINAL............................2-1

2.1.1 Terminal Configurations.................................................. 2-1

2.1.2 Cable Configuration........................................................2-2

2.1.3 Accessing Local Management........................................2-3

2.2 LOCAL MANAGEMENT THROUGH A MODEM.........................2-5

2.2.1 Cable Configuration........................................................2-5

2.2.2 Accessing Local Management........................................2-5

CHAPTER 3 DEVICE/BOARD/PORT COUNTERS

3.1 DEVICE/BOARD/PORT COUNTERS SCREEN.........................3-1

3.1.1 Displaying the Desired Board/Port.................................. 3-2

3.1.2 Device/Board/Port/Counters Screen Fields....................3-3

3.1.3 Using the Reset Counters Option...................................3-4

3.1.4 Using the Enable Board/Disable Board Option............... 3-4

3.1.5 Using the Enable Port/Disable Port Option..................... 3-5

3.1.6 Using the Enable All Ports Option ..................................3-5

3.2 OTHER COMMAND OPTIONS...................................................3-5

CHAPTER 4 USING THE COMMUNITY NAMES OPTION

4.1 COMMUNITY NAMES SCREEN.................................................4-1

4.1.1 Community Names Screen Fields ..................................4-2

4.1.2 Editing the Community Names Screen...........................4-3

CHAPTER 5 USING THE SETUP OPTION

5.1 SETUP SCREEN.........................................................................5-1

5.1.1 Setup Screen Fields .......................................................5-2

5.1.2 Changing the Device Name............................................5-3

5.1.3 Using the Set IP Address Option....................................5-3

5.1.4 Using the Set SubNet Mask Option................................5-4

5.1.5 Using the Set Default Gateway Option...........................5-5

iii

CONTENTS

5.1.6 Using the Set Current Date Option..................................5-6

5.1.7 Using the Set Current Time Option.................................5-6

5.1.8 Using the Set Modem Baud Rate Option........................5-6

5.1.9 Using the Set Device Lock Option...................................5-7

5.1.10 Using the Set Refresh Option..........................................5-7

5.1.11 Using the Set Factory Defaults Option............................5-8

CHAPTER 6 USING THE PORT ASSOCIATION OPTION

6.1 PORT ASSOCIATION SCREEN .................................................6-1

6.1.1 Port Association Screen Fields .......................................6-2

6.1.2 Changing the Port Association........................................6-2

iv

CHAPTER 1

INTRODUCTION

Welcome to Cabletron Systems’

the Cabletron Systems IRM2

manual to serve as a simple reference guide for using IRM2/LM. Local
Management for the IRM2 provides complete control of your IRM2
through the Console Port on the module. You should read through this
manual to gain a full understanding of Local Management for the IRM2.

IRM2/LM™ – Local Management for

User’s Manual. We have designed this

1.1 USING THIS MANUAL

Chapter 1,
Local Management for Cabletron Systems’ IRM2. The chapter also
includes a list of related manuals.

Chapter 2,
Management for the IRM2. This chapter includes the procedures for
communicating with Local Management through the IRM2’s Console
port.

Chapter 3,
statistical information concerning your IRM2, its boards, and its ports.

Introduction

Getting Started

The Device/Board/Port Counters Screen

, discusses the capabilities of Cabletron Systems’

, lists procedures for accessing Local

, describes

Chapter 4,
Community Names Option. Instructions are provided on how to control
access to the IRM2 and designate which workstations will receiv e alarms
from the device.

Chapter 5,
Option. Procedures are provided in this chapter on how to use options for
setting the: IP Address, current date, current time, modem baud rate,
device lock, statistics refresh time, and restoration of factory defaults for
your IRM2.

Chapter 6,
Association Screen and its options.

Using the Community Names Option

Using the IRM2 Setup Option

Using the Port Association Option

, describes the IRM2 Setup

, discusses the Port

, describes the

1-1

INTRODUCTION

We assume that you have a general working knowledge of Ethernet or
IEEE 802.3 type data communications networks and their physical layer
components.

1.2 GETTING HELP

If you need additional support related to Cabletron Systems’ Local
Management for the IRM2, or if you have any questions, comments, or
suggestions concerning this manual, feel free to contact Cabletron
Systems’ Technical Support at:

By phone [phone]

Monday-Friday; 8am - 8 pm EST
By CompuServe® GO CTRON from any !
By Internet mail [e-mail]

1.3 ABOUT IRM2 LOCAL MANAGEMENT

The IRM2/LM provides unique management and control capabilities for
the IRM2 module. You can access Local Management either through a
VT™ 200 or 300 series terminal, or terminals running emulation
programs for these series terminals, or through a Hayes compatible
modem.

With IRM2 Local Management, you have the tools to manage the IRM2
and its attached segments. For example, you can enable and disable ports
and set device parameters such as IP address, SubNet Mask, Default
Gateway, current date and time, modem baud rate, statistical counters,
refresh time, and enable or disable factory default settings.

You can also use Local Management to view a full array of statistics to the
port level, including the number of:

bytes received runt packets
packets no resource errors
received collisions misaligned packets
transmit collisions CRC errors
OOW collisions giant packets

1-2

INTRODUCTION

Since the IRM2 is an SNMP compliant device, you can also set
community names for the devices attached to your IRM2. These
community names serve four purposes:

• They provide a security. The IRM2 authenticates any SNMP request,
and only responds to those requests that have a community name
contained in the IRM2 community name table.

• They allow you to set which network management workstations
receive traps from the IRM2.

• They allow you to control Read, Read/Write, and Superuser access to
your device.

• They allow you to set Local Management passwords.

1.4 RELATED MANUALS

Use the following guide to supplement the procedures and other technical
data provided in this document. Where appropriate, we reference
procedures contained in the following guide but do not repeat them.

Cabletron Systems’

Intelligent Repeater Module (IRM-2) Installation

Guide

1.5 SUGGESTED READING

Chapter 5,
pertain to subnetworking. Since a detailed description of subnetworking
is beyond the scope of this manual, we suggest you read the following
book to supplement and/or enhance your general understanding of
subnetting, subnet masking, and the use of the default gateway

Comer, Douglas E. Principles, Protocols, and Architecture. 2nd ed. Vol.1,

Internetworking with TCP/IP. New Jersey: Prentice Hall, 1991.

Using the Setup Option

, contains changeable options that

1-3

INTRODUCTION

1-4

CHAPTER 2

GETTING STARTED

This chapter lists procedures for accessing IRM2 Local Management for
the IRM2. Information is provided on required terminal and cable
configurations for connecting to the IRM2’s Console port. Information is
also provided on accessing Local Management through a modem.

2.1 LOCAL MANAGEMENT FROM A TERMINAL

To access Local Management for the IRM2, you must attach a VT 200 or
300 series terminal, or terminals running emulation programs for these
series to the 9 pin port labeled CONSOLE on the IRM2.

2.1.1 Terminal Configurations

Use the following terminal configurations requirement to set up for the
local management CONSOLE port. When using a Digital Equipment

F3

Corporation (DEC™) VT 200 or 300 series terminal, press
the Setup Directory. When using a terminal emulator, refer to your
equipment user manual for setup procedures.

to access

Display Set-up Menu

Columns 80 Columns
Controls Interpret Controls
Auto Wrap No Auto Wrap
Text Cursor No Cursor

General Set-up Menu

Mode (VT220) VT200, 7 Bit Control

(VT320) VT300, 7 Bit Control

Cursor Keys Normal Cursor Keys

2-1

GETTING STARTED

Communications Set-up Menu

Transmit Transmit=9600
Receive Receive=Transmit
XOFF any option
Bits Parity 8 bits, No Parity
Stop Bit 1 Stop Bit
Local Echo No Local Echo
Port (VT220) EIA Port, Data Leads Only

(VT320) DEC-423, Data Leads Only
Transmit any option
Auto Answerback (VT 320) No Auto Answerback

Keyboard Set-up Menu

Keys Typewriter Keys
Auto Repeat any option
Keyclick any option
Margin Bell Margin Bell
Warning Bell Warning Bell
Auto Answerback (VT 220) No Auto Answerback

2.1.2 Cable Configuration

Access Local Management by using an RS232 cable. This cable connects
the terminal to the IRM2 CONSOLE port.

The required pin configuration for a cable with a 25 pin or a 9 pin
connector at the terminal end of the cable, and a 9 pin connector at the
IRM2 end of the cable, is as follows:

9 Pin Male Connector to 25 Pin Female Connector
(IRM2 End) (Terminal End)

Pin 3 (Receive) to Pin 2 (Transmit)
Pin 2 (Transmit) to Pin 3 (Receive)
Pin 5 (Ground) to Pin 7 (Ground)
Pin 7 (Request to Send) to Pin 5 (Clear to Send)
Pin 8 (Clear to Send) to Pin 20 (Data Terminal Ready)

2-2

GETTING STARTED

9 Pin Male Connector to 9 Pin Female Connector
(IRM2 End) (Terminal End)

Pin 3 (Receive) to Pin 3 (Transmit)
Pin 2 (Transmit) to Pin 2 (Receive)
Pin 5 (Ground) to Pin 5 (Ground)
Pin 7 (Request to Send) to Pin 8 (Clear to Send)
Pin 8 (Clear to Send) to Pin 7 (Return to Send)

2.1.3 Accessing Local Management

This procedure assumes that a 9 to 25 pin RS232 cable is connecting the
terminal to the IRM2.

To access Local Management:

1. Plug the 9 pin end of the RS232 cable into the RS232 port labeled
CONSOLE on the IRM2.

2. Plug the 25 pin end of the RS232 cable into the COMM port on the
terminal.

3. Turn the terminal on. The IRM2 Password Screen will appear.

4. Enter your

Password

. (The factory default password is the Return

key).

Note:

If you enter a Superuser name at the Community Names Screen (see
Chapter 4), the password becomes the Superuser name. If you enter more
than one Superuser name, you may use any of these names as the
password.

5. Press

Return

. The IRM2 SNMP Local Management Screen, Figure

2-1, appears on the terminal.

6. Use your arrow keys to select the

screen and press

Return

. The DEVICE/BOARD/PORT COUNTERS

MAIN

option at the bottom of the

Screen, Figure 2-2, appears.

You may now use IRM2 Local Management.

2-3

GETTING STARTED

P.O. Box 5005 Rochester, NH 03867-0505 U.S.A.

(C) Copyright Cabletron Systems Inc. 1992

IRM2 LOCAL MANAGEMENT

Cabletron Systems Incorporated

[phone]

IRM2 SNMP Version 2.00.00

Main

Figure 2-1 IRM2 SNMP Local Management Screen

11/02/92 DEVICE/BOARD/PORT COUNTERS

Device Name: IRM2 Ethernet Address: 00-00-1d-00-39-14
IP Address: 132.177.118.24

Device Board 1 Port 1
Bytes Received 43594532 43594532 43594532

Packets: 176992 176992 176992
Errors: 14 14 14

Receive Collisions: 0 0 0
Transmit Collisions: 1 1 1
Out of Window Collision: 0 0 0
Runt Packets: 11 11 11
No Resources Available: 0 0 0
Frame Alignment Errors: 3 3 3
CRC Errors: 0 0 0
Giant Packets: 0 0 0
Port Admin Status: ON Port Seq. Status: ON

EXIT BOARD 1 PORT 1 RESET COUNTERS COMMUNITY NAMES
SETUP ENABLE BOARD DISABLE BOARD ENABLE PORT DISABLE PORT
ENABLE ALL PORTS PORT ASSOCIATION

Figure 2-2 Device/Board/Port Counters Screen

2-4

GETTING STARTED

2.2 LOCAL MANAGEMENT THROUGH A MODEM

To access IRM2 Local Management through a modem, you must use a
Hayes, or Hayes compatible, modem meeting the AT Command Set. To
access, as with the terminal, attach the modem to the 9 pin port labeled
CONSOLE on the IRM2.

2.2.1 Cable Configuration

Access Local Management by a RS232 cable. This cable connects the
terminal to the IRM2 Console port.

The pin out for a cable with a 25 pin or a 9 pin connector at the terminal
end of the cable, and a 9 pin connector at the IRM2 end of the cable,
should be configured as follows:

9 Pin Male Connector to 25 Pin Female Connector
(IRM2 End) (Modem End)

Pin 2 (Transmit) to Pin 2 (Transmit)
Pin 3 (Receive) to Pin 3 (Receive)
Pin 5 (Ground) to Pin 7 (Ground)
Pin 7 (Request to Send) to Pin 20 (Data Terminal Ready)
Pin 8 (Clear to Send) to Pin 8 (Data Carrier Detect)

2.2.2 Accessing Local Management

Before accessing Local Management through a modem, you must
perform the following:

• Use a terminal to set the Modem Baud Rate option on the Setup screen,

if the desired baud rate is different from the IRM2 default setting of

9600. Refer to Section 2.1,
Chapter 5,

Using the Setup Option

Local Management From a T erminal

.

• Set the Modem Modem Switch on the front panel of the IRM2 to the

On

position. Off is the default for Terminal. (See Figure 2-3.)

and

2-5

GETTING STARTED

On Off

Not Used

Not Used

On

Figure 2-3 Front Panel Switches

Modem access to Local Management:

Not Used

Modem Switch
(Off for Terminal)

1. Plug the 9 pin end of the RS232 cable into the port labeled CONSOLE
on the IRM2.

2. Plug the 25 pin end of the RS232 cable into the port on the modem.

3. Turn the modem on.

4. Dial into the modem connected to the IRM2. The IRM2 Password
Screen appears once your connection is established.

5. Enter your

Password

. (The factory default password is the Return

key).

Note:

If you enter a Superuser name at the Community Names Screen
(See Chapter 4), the password becomes the Superuser name. If you enter
more than one Superuser name, you may use any of these names as the
password.

6. Press

Return

. The IRM2 SNMP Local Management screen, Figure

2-1, appears on the terminal.

7. Press

Return

. The DEVICE/BOARD/PORT COUNTERS screen,

Figure 2-2, appears.

You may now use IRM2 Local Management.

2-6

CHAPTER 3

DEVICE/BOARD/PORT COUNTERS

The IRM2 DEVICE/BOARD/PORT COUNTERS Screen is the main
access screen for IRM2 Local Management. This screen provides
descriptive information about the network traffic passing through the
IRM2.

3.1 DEVICE/BOARD/PORT COUNTERS SCREEN

The DEVICE/BOARD/PORT COUNTERS Screen, Figure 3-1, allows
quick scanning of statistical information concerning the MMAC™,
boards, and ports associated with the IRM2. You can view the number of
bytes received, the total number of packets, the total number of receive
and transmit collisions, and the number of errors, and the Port
Administration and Segmentation Status.

11/02/92 DEVICE/BOARD/PORT COUNTERS

Device Name: IRM2 Ethernet Address: 00-00-1d-00-39-14
IP Address: 132.177.118.24

Device Board 1 Port 1
Bytes Received 43594532 43594532 43594532

Packets: 176992 176992 176992
Errors: 14 14 14

Receive Collisions: 0 0 0
Transmit Collisions: 1 1 1
Out of Window Collision: 0 0 0
Runt Packets: 11 11 11
No Resources Available: 0 0 0
Frame Alignment Errors: 3 3 3
CRC Errors: 0 0 0
Giant Packets: 0 0 0
Port Admin Status: ON Port Seq. Status: ON

EXIT BOARD 1 PORT 1 RESET COUNTERS COMMUNITY NAMES
SETUP ENABLE BOARD DISABLE BOARD ENABLE PORT DISABLE PORT
ENABLE ALL PORTS PORT ASSOCIATION

Figure 3-1 Device/Board/Port Counters Screen

3-1

DEVICE/BOARD/PORT COUNTERS

Total errors are further broken down into the following categories:

• Out of Window Collisions

• Runt Packets

• No Resources Available

• Frame Alignment Errors

• CRC Errors

• Giant Packets.
In addition to viewing the above-mentioned information, the

DEVICE/BOARD/PORT COUNTERS screen allows you to perform the
following functions:

• Reset all counter information associated with the MMAC to 0

• Enable or Disable an individual board

• Enable or Disable an individual port

• Enable all ports

• Configure port association.
You can also view Third-Party MIMs using the DEVICE/BOARD/PORT

COUNTERS screen. Device statistic counters for the whole MMAC
include Third-Party MIM acti vity for Bytes Recei ved, P ackets, and Errors
as well as the board and port statistics for these categories. Only Port 1
displays the Third-Party MIM data, providing statistics for all port
activity on the board. Command options that function with Third-Party
MIMs are: EXIT, BOARD X, PORT X, and RESET COUNTERS.

3.1.1 Displaying the Desired Board/Port

When the DEVICE/BOARD/PORT COUNTERS Screen first appears, it
displays Device (IRM2), Board 1, and Port 1 information.

To view counter information for another board or port:

1. Using the arrow keys, highlight the

PORT X,

2. Press the

at the bottom of the screen.

shift

and + keys (increase), or just the - key (decrease), until

reaching the board/port number you wish to view.

desired option,

BOARD X

or

3. Press

Return

. Counter information associated with the selected

board/port appears.

3-2

DEVICE/BOARD/PORT COUNTERS

3.1.2 Device/Board/Port/Counters Screen Fields

The following briefly explains each field in the DEVICE/BOARD/PORT
COUNTERS Screen. Counter information is displayed separately on the
screen for the whole Device (IRM2), the selected board, and the selected
port.

Bytes Received:

Displays the number of bytes received.

Packets:

Displays the total number of packets received or transmitted.

Errors:

Displays the total number of errors detected.

Receive Collisions:

Displays the number of collisions received.

Transmit Collisions:

Displays the number of collisions generated during transmission.

Out of Window Collisions:

Displays the number of collisions out of the standard collisions window

µ

(51.2

s) due to a network problem.

Runt Packets:

Displays the number of runt packets received from the network. A runt
packet is one that is less than the minimum Ethernet frame size of 64
bytes not including preamble.

No Resources Available:

Displays the number of times the IRM2 is too involved in the repeating
process to accurately classify received packets (i.e. Runt, CRC, Giant,
etc.) This error has no effect on the throughput of the device or its ability
to repeat.

Frame Alignment Errors:

Displays the number of errors due to misaligned packets.

CRC Errors:

Displays the number of packets with bad Cyclical Redundancy Checks
(CRC) received from the network.

3-3

DEVICE/BOARD/PORT COUNTERS

Giant Packets:

Displays the number of packets received whose size exceeded 1518 data
bytes, not including preamble.

Port Admin. Status:

Displays the Administrative status of the Port. The two possible status
messages are ON or OFF.

Port Seg. Status:

Displays the segmentation status of the Port. The two possible status
messages are ON or SEG (Segmented).

3.1.3 Using the Reset Counters Option

The Reset Counters Option allows you to reset all gathered counter
information to 0.

To reset the Device, Board, and Port counters:

1. Use the arrow keys to highlight the RESET COUNTERS option at

the bottom of the DEVICE/BOARD/PORT COUNTERS screen.

2. Press Return. All counters will be reset to 0.

3.1.4 Using the Enable Board/Disable Board Option

The Enable and Disable Board options allow you to enable or disable the
board that is displaying statistics at the DEVICE/BOARD/PORT
COUNTERS screen.

To enable or disable the Board:

1. Use the arrow keys to highlight the ENABLE BOARD or DISABLE

BOARD option at the bottom of the DEVICE/BOARD/PORT
COUNTERS screen.

2. Press Return. The Board is now either enabled or disabled as desired.

3-4

DEVICE/BOARD/PORT COUNTERS

3.1.5 Using the Enable Port/Disable Port Option

With the Enable and Disable Port option, you can enable or disable the
port that is displaying statistics at the DEVICE/BOARD/PORT
COUNTERS screen.

To enable or disable a port:

1. Use the arrow keys to highlight the ENABLE PORT or DISABLE
PORT option at the bottom of the DEVICE/BOARD/PORT
COUNTERS screen.

2. Press Return. The Port is now either enabled or disabled as desired.

3.1.6 Using the Enable All Ports Option

With the Enable All Ports option, you can enable all the ports you are
managing with IRM2/LM.

To enable all the ports for the device:

1. Use the arrow keys to highlight the ENABLE ALL PORTS option at
the bottom of the DEVICE/BOARD/PORT COUNTERS screen.

2. Press Return. All Ports for the device are now enabled.

3.2 OTHER COMMAND OPTIONS

The DEVICE/BOARD/PORT COUNTERS screen provides access to
additional management screens. To access any of these screens use your
arrow keys to highlight the desired selection and press. The following
chapters provide details regarding these screens, their options, and ho w to
use them.

Additional management options:

EXIT

Selection of this option to exit IRM2 Local Management to the Password
Screen.

3-5

DEVICE/BOARD/PORT COUNTERS

COMMUNITY NAMES
Select this option to reach the Community Names screen. This screen
allows you to designate community names for the devices attached to
your IRM2. You can also designate the SNMP Compliant Network
Management Workstations that you want to receive alarms from the
IRM2. Community names authenticate a SNMP request, since the IRM2
only responds to community names contained in the community name
table. In addition, any community name assigned Superuser access also
acts as a password to Local Management.

SETUP

Select this option to reach the Setup screen. This screen allows you to set
parameters relating to the IRM2. Using Setup, you can view/change the
IP address, modem baud rate, security mode (locked or unlocked),
statistical counters refresh time, and enable or disable the factory default
settings for the IRM2.

PORT ASSOCIATION
Select this option to reach the Port Association screen. This screen allows
you to toggle either the AUI Port or the Fiber Optic Link Port to function
as a repeater (the IRM2 automatically sets the non-repeater port to OFF).

3-6

CHAPTER 4

USING THE COMMUNITY NAMES OPTION

The Community Names Option allows you to decide the type of access
(Read Only, Read/Write, or Superuser) SNMP workstations have to the
IRM2, and which workstations you want to receive alarms from the
device. You can also change the password or add new passwords to the
device by entering new Superuser names or altering existing Superuser
names.

4.1 COMMUNITY NAMES SCREEN

To access the Configure Community Names Screen:

1. Use the arrow keys to highlight the COMMUNITY NAMES option
at the bottom of the DEVICE/BOARD/PORT COUNTERS screen.

2. Press Return. The Community Names Screen, Figure 4-1, appears.

COMMUNITY NAMES

Please note: SU names are local passwords

-----------------------------------------------------------------------

Community Name Access Traps Trap IP Addr

----------------------------------------------------------------------­ public RO NO 0.0.0.0
ctron RW NO 0.0.0.0
SU NO 0.0.0.0

SAVE RETURN

Figure 4-1 Community Names Screen

4-1

USING THE COMMUNITY NAMES OPTION

4.1.1 Community Names Screen Fields

The following briefly explains each field on the Community Names
screen.

Community Name

Displays the user defined IRM2 access name assigned to SNMP
Compliant Network Management Workstations.

Access

Indicates the access status of the workstations. The possible conditions
are:

RO (Read only) Read only access to the IRM2.

RW (Read/Write) Read/Write access to the IRM2. These

workstations can read and write to the IRM2,
but cannot change the IP address or the
Community Names.

SU (Superuser) Superuser access to IRM2. These workstations

have Read/Write and can change all parameters
including the IP Address and Community
Names. Multiple Superusers can be assigned
IRM2 access. In addition, any Community
Name given Superuser Access acts as a
password to Local Management.

NA (No Access) No access to the IRM2.

Traps
Indicates whether or not the IRM2 sends alarms to the workstations.

Trap IP Addr

Indicates the IP address of the workstation(s) that receiv e alarms from the
IRM2.

4-2

USING THE COMMUNITY NAMES OPTION

4.1.2 Editing the Community Names Screen

Caution: Changing the factory default Superuser Name (the Return Key)
changes the password to Local Management. Any community names
assigned Superuser Access are your passwords to Local Management.
These entries are sensitive to upper and lower case. Be sure to remember

them, and the way you typed them.

To make changes to the Community Names screen:

1. Use the arrow keys to highlight the appropriate Community Name

field.

2. Enter the desired Community Name of the workstation (up to 31

characters).

3. Press Return. The Access field is highlighted.

4. Press Return until the appropriate selection appears. Pressing the

Return key sequentially toggles RO, RW, SU, and NA.

5. Using the arrow keys highlight the Traps field.

6. Press the Return key until the desired selection appears. Pressing the

Return key alternately toggles from YES and NO. YES allows the
IRM2 to send alarms to the workstation identified in the IP address
field. NO stops the IRM2 from sending alarms to the workstation.

7. Use the arrow keys to highlight a Trap IP Addr field.

8. Enter the workstation IP address into the field using dotted decimal

notation. The format for this notation is XXX.XXX.XXX.XXX, with
the value of XXX ranging from 0 to 254.

9. Use the arrow keys to highlight the SAVE command at the bottom of

the screen.

10. Press Return. You return to the IRM2 DEVICE/BOARD/PORT

COUNTERS screen and the message “Modified Screen Information
Has Been Saved!” appears.

Alarm designations and access modes are now implemented for altered
workstations.

4-3

USING THE COMMUNITY NAMES OPTION

4-4

CHAPTER 5

USING THE SETUP OPTION

The Setup option allows you to set your IRM2 De vice Name, IP Address,
SubNet Mask, Default Gateway, modem baud rate, current date and time,
security mode (locked or unlocked), statistical counters refresh time, and
enable or disable the factory default settings.

The IRM2 saves all of these options in the battery backup memory when
you power down, except for the factory default settings which always
default to DISABLED on power up.

5.1 SETUP SCREEN

To access the Setup Option:

1. Use the arrow keys to highlight the SETUP option at the bottom of the

DEVICE/BOARD/PORT COUNTERS screen.

2. Press Return. The Setup Screen, Figure 5-1, appears.

11/02/92 DEVICE/BOARD/PORT COUNTERS

Device Name: IRM2 Ethernet Address: 00-00-1d-00-39-14
IP Address: 132.177.118.24

Set IP Address: 132.177.118.24
Set SubNet Mask: 0.0.0.0
Set Default Gateway: 0.0.0.0
Set Current Date: 11/02/92
Set Current Time: 07:40:18
Set Modem Baud Rate: 2400
Set Device Lock: UNLOCKED
Set Refresh: 18
Factory Defaults: DISABLED

RETURN SAVE SETUP

Figure 5-1 Setup Screen

5-1

USING THE SETUP OPTION

5.1.1 Setup Screen Fields

The following briefly explains each field on the Setup screen.

Date

Displays the IRM2 internal date setting.

Time

Displays the IRM2 internal time setting (in 24 hour format).

Device Name

Displays the name assigned to the device. The default name is IRM2.

Ethernet Address:

Displays the IRM2 Ethernet address in a hexadecimal format
XX-XX-XX-XX-XX-XX, with XX ranging from 00-FF.

IP Address:

Displays the IP address of the IRM2 in dotted decimal notation.

Set IP Address:

Displays the current IP address of the IRM2.

Set SubNet Mask:

Displays the IRM2 SubNet Mask in dotted decimal notation.

Set Default Gateway

Displays the IRM2 Default Gateway in dotted decimal notation

Set Current Date:

Displays the current IRM2 date setting.

Set Current Time:

Displays the current IRM2 time setting (in 24 hour format).

Set Modem Baud Rate:

Displays the current Modem Baud Rate setting.

Set Device Lock:

Displays whether the device is in locked or unlocked mode.

Set Refresh:

Displays the number of seconds before the statistical counters refresh in
the DEVICE/BOARD/PORT COUNTERS screen.

5-2

USING THE SETUP OPTION

Factory Defaults:

Displays whether the IRM2 factory defaults are enabled or disabled.

5.1.2 Changing the Device Name

To change the Device Name:

1. Use the arrow keys to highlight the Device Name field.

2. Enter the desired text (up to 20 characters). If you enter too many

characters, the error message "Too Many Characters Entered" appears
on the screen.

3. Press Return.

4. Use the arrow keys to highlight the SAVE SETUP option at the

bottom of the Setup screen.

5. Press Return. The message "Modified Screen Information Has Been

Saved!" appears on the screen.

5.1.3 Using the Set IP Address Option

To set the Set IP Address:

1. Use the arrow keys to highlight the Set IP Address field.

2. Enter the address into the field using dotted decimal notation. The

format for this entry is XXX.XXX.XXX.XXX, with values of XXX
ranging from 1-254.

3. Press Return. If you enter an illegal IP Address in step 2 the error

message “Illegal Information Entered” appears on the screen.

4. Use the arrow keys to highlight the SAVE SETUP option at the

bottom of the Setup Screen.

5. Press Return. The message “Modified Screen Information Has Been

Saved!” appears on the screen.

5-3

USING THE SETUP OPTION

5.1.4 Using the Set SubNet Mask Option

Note: Consult your Network Administrator prior to setting the SubNet
Mask.

The SubNet Mask defines how your IRM2 treats SNMP trap IP
destination addresses in its Community Names table. Use the Set SubNet
Mask option in conjunction with the Set Default Gateway option.

Set the SubNet Mask when:

• workstations in the Community Names table reside on a different
subnet (i.e., across a gateway or router), and you want these
workstations to receive SNMP traps.

Use the SubNet Mask factory default setting of 0.0.0.0 when:

• all trap designated workstations are on the IRM2 subnet.

Using the SubNet Mask, the IRM2 logically determines one of two
possible locations, wither on or not on its own subnet, for each trap IP
destination address in its Community Names table. If the address is on its
own subnet, the IRM2 transmits directly to the workstation with that
address. If the address is not on its subnet, the IRM2 transmits to the
workstation with that address combined with the router IP address in its
default gateway.

To set the SubNet Mask:

1. Use the arrow keys to highlight the Set SubNet Mask field.

2. Enter the mask into the field using dotted decimal notation. The format
for this entry is XXX.XXX.XXX.XXX, with value of XXX ranging
from 0-255.

3. Press Return. If you enter an illegal mask in step 2, the error message
"Illegal Information Entered" appears on the screen.

4. Use the arrow keys to highlight the SAVE SETUP option at the
bottom of the Setup screen.

5. Press Return. The message "Modified Screen Information Has Been
Saved!" appears on the screen.

5-4

USING THE SETUP OPTION

5.1.5 Using the Set Default Gateway Option

Note: Consult your Network Administrator prior to setting the Default
Gateway.

The Default Gateway is the IP address of the network connection
(gateway or router) used in forwarding management information from the
IRM2 (e.g., SNMP traps) to a network management station. Use the
Default Gateway option in conjunction with the Set SubNet Mask option.

Set the Default Gateway option when:

• workstations in the Community Names table reside on a different

subnet (i.e., across a gateway or router), and you want these
workstations to receive SNMP traps.

Use the Default Gateway factory default setting of 0.0.0.0 when:

• all trap designated workstations are on the IRM2 subnet.
To set the Default Gateway:

1. Use the arrow keys to highlight the Set Default Gateway field.

2. Enter the desired address into the field using dotted decimal notation.

The format for this entry is XXX.XXX.XXX.XXX, with value of
XXX ranging from 1-254.

3. Press Return. If you enter an illegal mask in step 2, the error message

"Illegal Information Entered" appears on the screen.

4. Use the arrow keys to highlight the SAVE SETUP option at the

bottom of the Setup screen.

5. Press Return. The message "Modified Screen Information Has Been

Saved!" appears on the screen.

5-5

USING THE SETUP OPTION

5.1.6 Using the Set Current Date Option

To set the current date:

1. Use the arrow keys to highlight the Set Current Date field.

2. Enter the date into the field in a mmddyy format.

3. Press Return. If you enter an illegal date in step 2, the error message
“Illegal Information Entered” appears on the screen.

4. Use the arrow keys to highlight the SAVE SETUP option at the
bottom of the Setup screen.

5. Press Return. The message “Modified Screen Information Has Been
Saved!” appears on the screen.

5.1.7 Using the Set Current Time Option

To set the current time:

1. Use the arrow keys to highlight the Set Current Time field.

2. Enter the time into the field in 24 hour hh:mm:ss format.

3. Press Return. If you enter an illegal time in step 2, the error message
“Illegal Information Entered” appears on the screen.

4. Use the arrow keys to highlight the SAVE SETUP option at the
bottom of the Setup Screen.

5. Press Return. The message “Modified Screen Information Has Been
Saved!” appears on the screen.

5.1.8 Using the Set Modem Baud Rate Option

To set the Baud Rate for an attached modem:

1. Use the arrow keys to highlight the Set Modem Baud Rate field.

5-6

USING THE SETUP OPTION

2. Press the Return key until the appropriate selection appears. (This

field sequentially displays the following allowable baud rate values:
300, 600, 1200, 2400, 4800, 9600, 19200.)

3. Use the arrow keys to highlight the SAVE SETUP option at the

bottom of the Setup Screen.

4. Press Return. The message “Modified Screen Information Has Been

Saved!” appears on the screen.

5.1.9 Using the Set Device Lock Option

The device lock option, when enabled, prevents the access of any new
source address access to the IRM2 through its station ports (a
point-to-point port). If the new address is not one of those already in the
source address database for that port, the IRM2 turns that port off.

To set the device lock:

1. Use the arrow keys to highlight the Set Device Lock field.

2. Press the Return key until the appropriate selection appears. (This

field toggles between LOCKED and UNLOCKED.)

3. Use the arrow keys to highlight the SAVE SETUP option at the

bottom of the Setup screen.

4. Press Return. The message “Modified Screen Information Has Been

Saved!” appears on the screen.

5. If you have just unlocked the device you must also reenable the

boards. Refer to Section 3.1.4, Using the Enable Board/Disable
Board Option, to do so.

5.1.10 Using the Set Refresh Option

To set counter reset time (in seconds):

1. Use the arrow keys to highlight the Set Refresh field.

2. Enter the value (2-99) into the field.

5-7

USING THE SETUP OPTION

3. Press Return. If you enter an illegal time in step 2, the error message
“Illegal Information Entered” appears on the screen.

4. Use the arrow keys to highlight the SAVE SETUP option at the
bottom of the Setup screen.

5. Press Return. The message “Modified Screen Information Has Been
Saved!” appears on the screen.

5.1.11 Using the Set Factory Defaults Option

To enable the factory defaults:

1. Use the arrow keys to highlight the Set Factory Defaults field.

2. Press the Return key until the desired selection appears. (This field
toggles between ENABLED and DISABLED.)

3. Use the arrow keys to highlight the SAVE SETUP option at the
bottom of the Setup Screen.

4. Press Return. The message “Modified Screen Information Has Been
Saved!” appears on the screen.

Note: The factory default for this field is DISABLED. Once you leave the
Setup screen and then return to it, even after being saved as ENABLED,
this field reads as DISABLED.

5-8

CHAPTER 6

USING THE PORT ASSOCIATION OPTION

The Port Association Option allows you to set which port on the front of
the IRM2, the AUI Port or Fiber Optic Link Port, acts as the repeater port.

6.1 PORT ASSOCIATION SCREEN

To access the Port Association Option:

1. Use the arrow keys to highlight the PORT ASSOCIATION option at

the bottom of the DEVICE/BOARD/PORT COUNTERS screen.

2. Press Return. The Port Association Screen, Figure 6-1, appears.

11/02/92 14:26:43 PORT ASSOCIATION

Device Name: IRM2 Ethernet Address: 00-00-1d-00-39-14
IP Address: 132.177.118.24

AUI Port FIBER Port

REPEATER, OFF

RETURN SAVE ASSOCIATION

Figure 6-1 Port Association Screen

6-1

USING THE PORT ASSOCIATION OPTION

6.1.1 Port Association Screen Fields

The following briefly explains each field on the Port Association Screen.

Device Name:

Displays the name assigned to the IRM2.

Ethernet Address:

Displays the Ethernet address of the IRM2 in the hexadecimal format
XX-XX-XX-XX-XX-XX, with XX ranging from 00-FF.

IP Address:

Displays the IP address of the IRM2 in dotted decimal notation.

AUI Port, FIBER Port

Displays the port association configuration the IRM2 is currently using.
The available configurations are:

REPEATER, OFF Indicates that the AUI Port is acting as the repeater

and the Fiber Port is off.

OFF, REPEATER Indicates that the AUI Port is off and the Fiber Port

is acting as the repeater.

6.1.2 Changing the Port Association

To change the Port Association:

1. Use the arrow keys to highlight the toggle selection Repeater, Off just
below the AUI Port, FIBER Port field.

2. Press the Return key until the desired selection appears. This is a
toggle field that alternately displays the available configuration
choices mentioned above.

3. Highlight the SAVE ASSOCIATION option at the bottom of the Port
Association Screen.

4. Press Return. The message “Modified Screen Information Has Been
Saved!” appears.

The Port Association changed to the desired configuration.

6-2