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October 1994

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Document:	PEswitch 900TX Installation
Order Number:	EK-DESBF-IN
Revision:	A01
Pages:	58
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PEswitch 900TX
Installation
Part Number: EK-DESBF-IN. A01

October 1994

This manual describes how to install and verify the
operation of the PEswitch 900TX module.

Revision/Update Information:

This is a new manual.

Copyright
October 1994
The information in this document is subject to change without notice and should not be construed as a
commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility
for any errors that may appear in this document.
Copyright  1994 by Digital Equipment Corporation.
All rights reserved. Printed in U.S.A.
The postage-paid Reader’s Comments form at the back of this document requests your evaluation of this
document to assist us in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: DEC, DECswitch, DECconnect, DEChub,
DEChub ONE, DECndu, DECndu Plus, DECnet, Digital, HUBwatch, MultiSwitch, and the DIGITAL logo.
AppleTalk is a registered trademark of Apple Computer, Inc.
Novell is a registered trademark of Novell, Inc.
FCC NOTICE — Class A Computing Device:
This equipment generates, uses, and may emit radio frequency energy. The equipment has been type
tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15
of FCC Rules, which are designed to provide reasonable protection against such radio frequency
interference when operated in a commercial environment. Operation of this equipment in a residential area
may cause interference; in which case, measures taken to correct the interference are at the user’s
expense.
VCCI NOTICE — Class 1 Computing Device:
This equipment is in the 1st Class category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by
Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in
commercial and/or industrial areas. Consequently, when used in a residential area or in an adjacent area
thereto, radio interference may be caused to radios and TV receivers. Read the instructions for correct
handling.
CE NOTICE – Class A Computing Device:
Warning!
This is a Class A product. In a domestic environment this product may cause radio interference, in which
case the user may be required to take adequate measures.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses
Gerätes Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende
Gegenmaßnahmen verantwortlich ist.
Attention!
Ceci est un produit de Classe A. Dans un environment domestique, ce produit risque de créer des
interférences radioélectriques, il appartiendra alors à l’utilisateur de prendre les mesures spécifiques
appropriées.

Contents

Safety
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuring the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Setup Port Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup Port Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessing the Setup Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start Redirect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PEswitch 900TX Installation Menu (DEChub ONE Options) . . . . . . . . .
PEswitch 900TX Installation Menu (DEChub 900 Options) . . . . . . . . . .
Description of Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10
10
10
13
14
15
16

LED Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Problem Solving Using the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Normal Powerup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Internal and External Crossover Configurations . . . . . . . . . . . . . . . . . . . .
H8571-J Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H8575-A Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10BaseT (8-pin MJ) Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41
42
42
43

iii

Contents (Cont.)
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Associated Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Tables
1 DLU Process Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Module LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 FDDI PHY LED States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Problem Solving Using the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 PEswitch 900TX Operating Specifications . . . . . . . . . . . . . . . . . . . . .
6 Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26
38
38
39
44
45

Safety

Any warning or caution that appears in this manual is defined as follows:
WARNING

Contains information to prevent personal injury.

CAUTION

Contains information to prevent damage to equipment.

VORSICHT

Enthält Informationen, die beachtet werden müssen,
um den Benutzer vor Schaden zu bewahren.

ACHTUNG

Enthält Informationen, die beachtet werden müssen,
um die Geräte vor Schaden zu bewahren.

DANGER

Signale les informations destinées à prévenir les accidents corporels.

ATTENTION

Signale les informations destinées à prévenir la détérioration du matériel.

AVISO

Contiene información para evitar daños personales.

PRECAUCION

Contiene información para evitar daños al equipo.

Safety

(Cont.)

The cautions that must be observed for the hardware described in this manual are
listed below in English, German, French, and Spanish. The pages on which these
safety messages appear are also listed.

CAUTION

This action deletes all configured settings and replaces
them with factory default values. All configuration settings
will be lost. [Page 16.]

ACHTUNG

Bei diesem Vorgang werden alle Konfigurationseinstellungen gelöscht und die Werkseinstellungen wieder eingesetzt. Alle Konfigurationsdaten gehen verloren.

ATTENTION

Cette action supprime tous les paramètres de configuration et les remplace par des valeurs prédéfinies. Tous
les paramètres de configuration seront perdus.

PRECAUCION

Esta intervención borrará todos los parámetros de configuración y los sustituirá por valores por defecto definidos
de fábrica. Se perderán todos los parámetros de configuración.

Safety
CAUTION

(Cont.)
If power is interrupted during Stage 3 of the DLU process,
the firmware image can become corrupted. Do not turn off
power to the unit or perform any action that can cause the
unit to lose power during Stage 3 of the DLU process.
[Pages 25, 26, and 32.]

ACHTUNG

Sollte während der Phase 3 des DLU–Prozesses eine
Unterbrechung der Stromversorgung eintreten, kann das
Firmwareprogramm zerstört werden. Aus diesem Grunde
wird dringend empfohlen, Vorkehrungen zu treffen, daß
während der Durchführung dieser Phase 3 die Systemeinheit weder ausgeschaltet noch die Stromversorgung
unterbrochen werden kann.

ATTENTION

L’image du microprogramme risque d’être corrompue, en
cas de coupure de courant au cours de l’étape 3 du processus DLU. Ne mettez pas l’unité hors tension et n’exécutez aucune action risquant d’entraîner une coupure
d’alimentation au cours de cette étape.

PRECAUCION

Si se interrumpe el suministro eléctrico durante la Etapa
3 del proceso DLU, puede dañarse la imagen del firmware. No se debe apagar la unidad ni realizar ninguna
operación que pueda causar una interrupción del suministro de la unidad durante la Etapa 3 del mencionado
proceso.

vii

Introduction
The PEswitch 900TX (also referred to in this manual as the module) provides the
interconnection between six 10 Mb/s Ethernet1 LANs and a high-speed 100 Mb/s
Fiber Distributed Data Interface (FDDI) network backbone.
As a self-learning IEEE 802.1d Media Access Control (MAC) bridge, the module
performs standard functions such as filtering and forwarding. In addition, the module
performs high-speed, transparent translation of network data packets between the
FDDI and Ethernet networks.
The PEswitch 900TX module is protocol-independent. As such, it accommodates
multiple protocols such as DECnet, LAT, TCP/IP, or any other protocol running on
FDDI and Ethernet LANs. The module operates transparently for plug-and-play
network operations and also includes flexible filtering options for destination and
source addresses and protocols.
These features can be accessed through Simple Network Management Protocol
(SNMP) management software, allowing network managers to determine which
users or groups of users can gain access to the networks. As with other bridge
products from Digital, access to network management can be restricted by password
protection.
The PEswitch 900TX standards-compliant technology (IEEE 802.1d, 802.1h, 802.1i,
802.2, 802.3, and ANSI FDDI) ensures operability in multivendor networks.
The module can be configured into the DEChub 900 MultiSwitch (also referred to in
this manual as the DEChub 900) and can also be configured as a standalone unit into
a DEChub ONE2 docking station.

Features
Your PEswitch 900TX module includes the following features:

• High-speed local traffic filtering and forwarding.
• Supports up to 8000 network addresses (64 Ethernet, 7936 FDDI).

1 In this manual, the term Ethernet is Digital’s term for its product compatibility with the

ISO 8802-3/ANSI/IEEE 802.3 standards and the Ethernet standards for Carrier Sense
Multiple Access with Collision Detection (CSMA/CD) local area networks (LANs).
2 Throughout this manual, the term DEChub ONE refers to the DEChub ONE or the
DEChub ONE-MX docking station unless otherwise specified.

PEswitch 900TX Installation

Introduction (Cont.)
•

Flexible filtering capabilities (source address, destination address, and protocol) for greater network control, increased security and bandwidth utilization,
and reduced propagation of network problems.

•

Configurable rate limiting of multicast packets to limit the spread of multicast and
broadcast storms.

•

Option to turn off automatic learning and manually load the address database.

•

Translation between FDDI and IEEE 802.3/Ethernet frame formats for direct,
transparent connections; translation of AppleTalk 1 and 2 AARP packets; handling of “raw IEEE 802.3” Novell IPX packets.

•

Fragmentation of large FDDI IP packets to legal-size Ethernet packets as per
RFC-791 (Internet Protocol) and RFC-1191 (Path MTU Discovery).

•

Spanning tree loop detection protocol:

•

–

IEEE 802.1d (default)

–

Digital LB100 mode

Built-in SNMP agent supports the following management information bases
(MIBs):
–

SNMP management (RFC-1157)

–

MIB II (RFC-1213)

–

Bridge MIB (RFC-1493)

–

FDDI MIB (RFC-1512)

–

Ethernet MIB (RFC-1398)

–

Digital ELAN MIB Extensions

•

Manageability using any generic SNMP management application that supports
the MIBs listed above.

•

User-friendly advanced Graphical User Interface (GUI) manageability with
Digital’s HUBwatch Network Management Station (NMS) application.

PEswitch 900TX Installation

Introduction (Cont.)
•

One FDDI dual attachment station (DAS) port and six 802.3/Ethernet (10BaseT)
LAN ports:
–

The module’s FDDI DAS port is available on the DEChub 900 backplane
or, when operating standalone, on the DEChub ONE-MX docking station
when optional ModPMDs are installed.

–

The 10BaseT front-panel ports are individually switchable to a
DEChub 900 backplane LAN through HUBwatch management. One of
the 10BaseT ports (port 3) can be redirected to the DEChub 900 backplane ThinWire LAN segment via HUBwatch.

–

When connected to a DEChub ONE docking station, one of the 10BaseT
ports (port 4) can be switched to the docking station’s AUI connector.

•

Out-of-band management (OBM) using SNMP over Serial Line Internet Protocol (SLIP) through the OBM connector in addition to normal in-band management.

•

Setup port for the initial setup of the module using a setup port device (a terminal
or personal computer).

•

Upgradeable device firmware (in nonvolatile Flash memory) using Trivial File
Transfer Protocol (TFTP) with Digital’s Network Device Upgrade (DECndu) Plus
utility or through the setup port with any TFTP server.

PEswitch 900TX Installation

Front Panel
LED — Lights when the module has
1) Power
power.
2) Module OK
LED — Lights when the module
passes self-test. If the module fails self-test, the Module OK LED
remains off.
3) Port State
LEDs — Show the status of ports 1
to 7. The LEDs can be on, off, or flashing.
LED — Indicates network traf4) Network Activity
fic level. The color of the LED (green or yellow) indicates whether the specific port’s network connection
is through the front panel (green) or through the
backplane (yellow).
5) FDDI port (PHY) LEDs — Indicates the status of the
connection between the module and the FDDI network. The FDDI port A LED is labeled 1A and the
FDDI port B LED is labeled 1B. The FDDI port is a
dual attachment station (DAS) port and is only available on the DEChub 900 backplane or, when operating standalone, on the DEChub ONE-MX docking
station.
NOTE: For more information about the
module’s LEDs, refer to the section
titled LED Descriptions.
6) Address Label – Represents the lowest of seven
consecutive Media Access Control (MAC) addresses. For example, if this module’s port 1 MAC address
is 08–00–2B–AB–0C–08, then the consecutive port
MAC addresses are:

6
5

Port 1 = 08–00–2B–AB–0C–08
Port 2 = 08–00–2B–AB–0C–09
Port 3 = 08–00–2B–AB–0C–0A
Port 4 = 08–00–2B–AB–0C–0B
Port 5 = 08–00–2B–AB–0C–0C
Port 6 = 08–00–2B–AB–0C–0D
Port 7 = 08–00–2B–AB–0C–0E

7) 10BaseT (8-pin MJ) port connectors — Supports
both UTP and STP cabling.
LKG-9474-94I

PEswitch 900TX Installation

Back Panel
1) Locking tab — Locks the module into a DEChub 900
backplane or into the DEChub ONE docking station.
It also contains the hot-swap switch lever.
2) 48-pin connector — Provides network and power
connections to the module when the module is
installed into a DEChub 900 or DEChub ONE docking station.
3) Grounding bolt — Provides a chassis grounding
connection between the module and a DEChub 900
or a DEChub ONE docking station.
4) Manufacturing label — Lists the module part number, serial number, revision level, and power requirements.
5) 160-pin connector — Provides network and power
connections to the module when the module is
installed into a DEChub 900 or a DEChub ONE docking station.
6) Mounting tab — Secures the module to the backplane when the module is installed into a DEChub 900
or a DEChub ONE docking station.
7) Grounding fingers — Provides additional chassis
grounding between the module and a DEChub 900
or a DEChub ONE docking station.

2
3

6
LKG–9664–94I

PEswitch 900TX Installation

Installing the Module
The PEswitch 900TX hot-swap feature allows you to install the module into the
DEChub 900 or DEChub ONE docking station without turning off power. Seating the
module initiates the module powerup sequence if enough power is available.

Compare your module’s power
requirements with the values
shown in the Hub Manager status
display (see example).
Module’s Manufacturing
Label (Example)

If any of the module’s power requirements
exceed the values shown in the status
display, add another power supply (see
the DEChub 900 MultiSwitch Owner’s
Manual).

Hub Manager Status
Display (Example)

50.5 W
8.0 A

Available: 90.5 W
5V: 13.0 A, 15V: 3.5 A

0.1 A 12 V
0.7 A 15 V

LKG–9665–94I

NOTE:

The 12V power in the DEChub 900 is derived from the
15V power source. Although it is listed separately in the
product specifications, the 12V requirements are
included in the 15V power total.

Seat the module into the
DEChub 900.

Release lever clicks
when module is
seated.

Hub Manager
status display

a. Place the module’s mounting
tab into a mounting slot on the
DEChub 900.
b. Pivot the module on the mounting tab and align the connectors.
c. Firmly push the module onto the
backplane connectors until the
release lever clicks.
d. Press down on the release lever
to ensure that it is locked.
Mounting tab

LKG–8711–93I

PEswitch 900TX Installation

Installing the Module (Cont.)

Verify that the module’s Power
LED lights immediately, and that the
LED lights (within 1
Module OK
minute).
a. The Power
LED lights
when power is applied, then
the module performs a selftest.
b. After the module completes
self-test, the Module OK
LED lights and remains lit,
then the Hub Manager status
display shows:

LKG-9666–94I

PEswitch 900TX
up
NOTE:

If the LEDs do not operate as described, refer to the
section titled Problem Solving Using the LEDs.

Connect the port cables.
Depending on your network configuration requirements, connect the appropriate
UTP/STP cables. After all cables are connected, go to the section titled Configuring the Module. See your network manager if you are not sure which cables to connect.
NOTE:

All cables should be installed, tested, and tagged at the
site, prior to this installation.

Connecting the UTP/STP cables.
The PEswitch 900TX module uses embedded crossover 10BaseT (8-pin MJ) port
connectors. The appropriate UTP/STP cable type, crossover or straight-through, is
required to ensure that the module’s transmit/receive signals connect correctly to the
transmitter/receiver of the connected device.

PEswitch 900TX Installation

Installing the Module (Cont.)

Before connecting the cables to the module, note the following:

•

If the device you are connecting to the module uses straight-through connectors,
use straight-through cables.

•

If the device you are connecting to the module uses crossover connectors, use
crossover cables.

•

The sum of crossovers must always equal an odd number.
NOTE:

Digital’s straight-through cables are marked (=);
crossover connectors (and cables) are marked (X).

If you need help determining the appropriate cable type to use, refer to the section
titled Connector Pin Assignments.
To connect the UTP/STP cables, complete the following steps:
a. Align the release tab on the
cable plug with the keyway on
the module’s 10BaseT port
connector.

Keyway

b. Insert the plug into the connector, ensuring that the release tab snaps into the
locked position.

Release
tab

LKG–9667–94I

NOTE:

To disconnect the UTP/STP cables, press the release tab.

After all cables are installed, go to the section titled Configuring the Module.

PEswitch 900TX Installation

Removing the Module

Disconnect all the cables from
the module.
To disconnect the UTP/STP
cables, press the release tab on
the cable plug, then disconnect
the cable.

Release
tab

LKG–9668–94I

Unseat the module from the
DEChub 900.

Lift release lever

a. Lift the release lever located
on the top of the DEChub 900
slot.
b. Pivot the module back on its
bottom mounting tab, and
disengage the module from
the backplane.

Mounting tab
LKG–8717-93I

PEswitch 900TX Installation

Configuring the Module
Setup Port Description
The setup port (on the DEChub 900 MultiSwitch or the DEChub ONE) allows you to
access and set PEswitch 900TX parameters. This section describes how to access
the module from either the DEChub 900 or the DEChub ONE.
NOTE:

The setup port screen displays illustrated in this manual
may vary slightly from the actual screen displays on your
setup port device.

The signals from the DEChub 900 Hub Manager setup port and from the DEChub
ONE setup port conform to the EIA-232D signaling standard at 9600 baud. To the
user, the port appears as a data terminal equipment (DTE) device.
NOTE:

Devices that use the EIA-423 signaling standard are
compatible with the DEChub 900 Hub Manager setup
port.

Setup Port Device Cabling
The setup port on the DEChub 900 MultiSwitch or the DEChub ONE can be
connected to a setup port device (a terminal or personal computer), using the
following cables and adapters.
Cable/Adapter Type

Connecting Device

BN24H-xx1

A terminal with a 6-pin MMJ connector

BN24H-xx1/H8575-A

A terminal with a 25-pin D-Sub connector

BN24H-xx1/H8571-J

A PC with a 9-pin D-Sub communications port

1 xx indicates cable length in meters.

Accessing the Setup Port
To access the setup port on the PEswitch 900TX module, do the following:
1. Ensure that the transmit and receive baud rates on the setup port device are
set to 9600 baud.
2. Connect the setup port device to the setup port connector on either the
DEChub 900 or the DEChub ONE (see illustration).

PEswitch 900TX Installation

Configuring the Module (Cont.)

DEChub 900 MultiSwitch

OBM port
Setup port

DEChub ONE

DEChub ONE-MX

OBM port
Setup port

OBM port
Setup port
To setup port

Setup port device
Cabling

H8571-J To setup port device
H8575-A

BN24H cable
LKG–9662–94I

PEswitch 900TX Installation

Configuring the Module (Cont.)
3. Press Return

on the setup port device a few times until a menu appears.

a. If the module is connected to the setup port on the DEChub ONE docking station, the PEswitch 900TX INSTALLATION MENU appears.
Go to the section titled PEswitch 900TX Installation Menu (DEChub
ONE Options).
b. If the module is connected to the Hub Manager setup port on the
DEChub 900, the DEChub 900 MultiSwitch INSTALLATION
MENU appears (see following example).
The following is an example of the DEChub 900 MultiSwitch INSTALLATION
MENU:
DEChub 900 MultiSwitch
DEChub 900 MultiSwitch INSTALLATION MENU
[1] Reset with Factory Defaults
[2] Reset with Current Settings
[3] Show Current Settings
[4] Set SNMP Read/Write Community
[5] Add SNMP Trap Addresses
[6] Delete SNMP Trap Addresses
[7] Dump Error Log
[8] Set In-Band Interface IP Address
[9] Downline Upgrade
[10] Set Out-of-Band Interface IP Address
[11] Set Out-of-Band Interface Port Speed
[12] Start Event Display Mode
[13] Start Redirect Mode

Enter selection: 13

Choose option 13, then
go to the section titled
Start Redirect Mode.

Return

To upgrade your module, without
assigning an IP address, choose
this option (refer to the DEChub 900
Owner’s Manual for details).

c. Choose option 13, then go to the section titled Start Redirect Mode.

PEswitch 900TX Installation

Configuring the Module (Cont.)
Start Redirect Mode
The Start Redirect Mode option redirects the DEChub 900 Hub Manager setup
port to the setup port of any network module (such as the PEswitch 900TX) that is
installed into the DEChub 900. Choosing this option allows you to configure or obtain
status of an installed network module by accessing the specified network module’s
installation menu.
After you choose the Start Redirect Mode option from the DEChub 900
MultiSwitch INSTALLATION MENU, the screen display prompts you for a slot
number as shown in the following example.
The following example shows how to select a slot number (user response is shown in
boldface type):
Enter selection: 13

Enter the slot number for redirection (1–8): 3 Return
Console redirected to 3: PEswitch 900TX
Attempting connection [Ctrl/C to abort]...
Connection successful!

Enter the number
of the slot where
the module is
installed.

After you press Return , the PEswitch 900TX INSTALLATION MENU appears on
your screen. Go to the section titled PEswitch 900TX Installation Menu (DEChub 900
Options).

PEswitch 900TX Installation

Configuring the Module (Cont.)
PEswitch 900TX Installation Menu (DEChub ONE Options)
This section shows the options available from the PEswitch 900TX
INSTALLATION MENU when the module is installed into the DEChub ONE
docking station.
The following is an example of the PEswitch 900TX INSTALLATION MENU:
PEswitch 900TX
PEswitch 900TX INSTALLATION MENU
[1] Reset with Factory Defaults
[2] Reset with Current Settings
[3] Show Current Settings
[4] Set SNMP Read/Write Community
[5] Add SNMP Trap Addresses
[6] Delete SNMP Trap Addresses
[7] Dump Error Log
[8] Set In-Band Interface IP Address
[9] Set In-Band Interface Default Gateway Address
[10] Downline Upgrade
[11] Set Out-of-Band Management (OBM) Interface IP Address
[12] Set Out-of-Band Management (OBM) Port Speed
[13] Module-Specific Options

Enter selection : 1

Choose an option,
then go to the section
titled Description of
Menu Options.

Return

If you need to assign
an IP address to the
module, choose this
option.

PEswitch 900TX Installation

Configuring the Module (Cont.)
PEswitch 900TX Installation Menu (DEChub 900 Options)
This section shows the options available from the PEswitch 900TX
INSTALLATION MENU when the module is installed into the DEChub 900.
The following is an example of the PEswitch 900TX INSTALLATION MENU:
PEswitch 900TX – slot 3
PEswitch 900TX INSTALLATION MENU
[1] Reset with Factory Defaults
Indicates the DEChub 900
[2] Reset with Current Settings
slot number where the
[3] Show Current Settings
module is installed.
[4] Set SNMP Read/Write Community
[5] Add SNMP Trap Addresses
[6] Delete SNMP Trap Addresses
[7] Dump Error Log
[8] Set In-Band Interface IP Address
[9] Set In-Band Interface Default Gateway Address
[10] Downline Upgrade
[11] Module-Specific Options
[Ctrl/C] Return to Hub Manager Menu

Enter selection : 1

Choose an option,
then go to the section
titled Description of
Menu Options.

PEswitch 900TX Installation

Return

If you need to assign
an IP address to the
module, choose this
option.

Configuring the Module (Cont.)
Description of Menu Options
This section describes the menu options that are available from the PEswitch
900TX INSTALLATION MENU. Note that the out-of-band menu options apply to the
module only when it is in standalone mode (configured in a DEChub ONE docking
station).

[1] Reset with Factory Defaults
This option resets the module, causing the module’s configured NVRAM parameters
to be initialized to factory default values.
!

This action deletes all configured settings and replaces
them with factory default values. All configuration
settings will be lost.

NOTE:

Allow approximately 1 minute for the module to reset
and complete self-test.

CAUTION

The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 1
PEswitch 900TX – slot 3
RESET WITH FACTORY DEFAULTS
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
IMPORTANT!
IMPORTANT!
IMPORTANT!
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* This selection will delete the current configuration
*
* settings and reset the system with the factory default *
* settings. All configuration settings will be lost.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Press Y to confirm [N] :

Return

Press Return for Main Menu ...

PEswitch 900TX Installation

Configuring the Module (Cont.)
[2] Reset with Current Settings
This option resets the module but leaves the module’s configured NVRAM
parameters at their current values.
NOTE:

Allow approximately 1 minute for the module to reset
and complete self-test.

The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 2
PEswitch 900TX – slot 3

RESET WITH CURRENT SETTINGS
This selection will reset your system with the
current configuration settings.

Press Y to confirm [N] :

Return

Press Return for Main Menu ...

PEswitch 900TX Installation

Configuring the Module (Cont.)
[3] Show Current Settings
This option shows the module’s current settings.
NOTE:

If the module is being configured for the first time, some
fields will be blank.

The following is an example of the display associated with this option:
Enter selection : 3
PEswitch 900TX – slot 3
PEswitch 900TX, 6–Ethernet/FDDI Switch, HW=v1/2,RO=v0.4,SW=v1.0.2
SysUpTime
: 01:39:11
14 resets
SNMP Read/Write Community
: public
SNMP Trap Addresses
: Not Configured
Status of Last Downline Upgrade
: TFTP Read
00:00:44 28 resets
Transfer Complete.
In-Band Interface Hardware Address
: 08–00–2B–A3–4C–70
In-Band Interface IP Address
: 16.20.216.181
In-Band Interface Default Gateway Address : Not Configured
Out-of-Band (OBM) Interface IP Address: Not Configured
Out-of-Band (OBM) Management Port Speed: 9600
Port 3 using front panel UTP port

Press Return for Main Menu ...

This dialog appears only when the module is
connected to a DEChub ONE docking station.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[4] Set SNMP Read/Write Community
This option prompts you to enter the module’s read/write community name.
The format for a community name is a string consisting of 4 to 31 printable ASCII
characters. This community name can be used by SNMP managers for read/write
access control.
The following is an example of an SNMP read/write community name: mario94
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 4
PEswitch 900TX – slot 3
SET SNMP READ/WRITE COMMUNITY
Format: The format for a community name is a string,
consisting of four to thirty–one printable ASCII
characters, that describes the relationship between an
SNMP agent and one or more SNMP managers. The string
defines the authentication mechanism that is employed
to validate the use of the community by the sending
SNMP entity.

Enter the community string [public] : mario94

Return

SNMP Read/Write community string set.
Press Return for Main Menu ...

PEswitch 900TX Installation

Configuring the Module (Cont.)
[5] Add SNMP Trap Addresses
This option prompts you to enter one or more SNMP trap (IP) addresses.
The format for an SNMP trap address is the standard 4-octet dotted decimal notation
for an IP address, where each octet of the address is represented as a decimal value,
separated by a decimal point (.).
The following is an example of an SNMP trap address: 16.20.54.156
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 5
PEswitch 900TX – slot 3
ADD SNMP TRAP ADDRESSES
Format: The standard 4 octet dotted decimal notation in which
each octet of the address is represented as a decimal
value, separated by a ’.’ character.
example: 16.20.54.156

Configured SNMP Trap Addresses: 16.20.216.81
Trap address [] : 16.20.54.156
Trap address added!

Return

Add another? [none] : Return

Press Return for Main Menu ...

Enter the SNMP trap address that you have
chosen, then press Return.

Appears only if the module has
been previously configured.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[6] Delete SNMP Trap Addresses
This option prompts you to select SNMP trap (IP) addresses for deletion.
The format for an SNMP trap address is the standard 4-octet dotted decimal notation
for an IP address, where each octet of the address is represented as a decimal value,
separated by a decimal point (.).
The following is an example of an SNMP trap address: 16.20.54.156
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 6
PEswitch 900TX – slot 3
DELETE SNMP TRAP ADDRESSES
Format: The standard 4 octet dotted decimal notation in which
each octet of the address is represented as a decimal
value, separated by a ’.’ character.
example: 16.20.40.156

Configured SNMP Trap Addresses: 16.20.216.81
Trap address [] : 16.20.216.81
Trap address deleted.

Delete another? [] :

Return

Press Return for Main Menu ...

Enter the SNMP trap address that you have
chosen for deletion, then press Return.

Appears only if the module has
been previously configured.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[7] Dump Error Log
This option displays error log dumps for use by Digital support personnel when
analyzing system faults. Up to 4 error log dumps can be stored, and the most recent
dump is displayed first.
The following is an example of the display associated with this option:
Enter selection : 7
PEswitch 900TX – slot 3
DUMP ERROR LOG
CURRENT RESET COUNT: 14
Entry #
= 3
Entry Status = 0 [0=valid, 1=write_error, 2=invalid, 3=empty, 4=crc_error
Entry Id
= 10
Firmware Rev = 1.0
Reset Count = 7
Timestamp
=
0
0
1C7
Write Count = 24
FRU Mask
= 0
Test ID
= A60
Error Data
= SR=2000 PC=03034C4A Error Code=000023C0
Registers
= D0=ECE462A1 D1=9FFF9FFD D2=00000284 D3=EC63F2C5
D4=9FFD9FC7 D5=00000001 D6=00000000 D7=0000FFFF
A0=04800000 A1=0307CE50 A2=04480000 A3=00066914
A4=03001CF8 A5=03020000 A6=0004A8BC A7=00000000

Dump another entry [Y]/N? N

Return

No more Error Log entries.
Press Return for Main Menu ...

PEswitch 900TX Installation

Configuring the Module (Cont.)
[8] Set In-Band Interface IP Address
This option prompts you to enter the module’s IP address.
The format for an IP address is the standard 4-octet dotted decimal notation, where
each octet of the address is represented as a decimal value, separated by a decimal
point (.).
The following is an example of an IP address: 16.20.54.156
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 8
PEswitch 900TX – slot 3
SET IN-BAND INTERFACE IP ADDRESS
Format: The standard 4 octet dotted decimal notation in which
each octet of the address is represented as a decimal
value, separated by a ’.’ character.
example: 16.20.40.156
To delete the IP address, enter 0 in the appropriate
address field.

IP address [16.20.216.179] : 16.20.54.156

Return

IP Address set
Press Return for Main Menu ...

This cell data represents a
previously set IP address.
During the initial setup, this
cell default will appear as [].

PEswitch 900TX Installation

Enter the module’s IP address,
then press Return.

Configuring the Module (Cont.)
[9] Set In-Band Interface Default Gateway Address
This option prompts you for a default gateway IP address.
NOTE:

The module does not need to be configured with a
subnet mask for SNMP communications with
management stations located on IP network subnets.

The following is an example of a default gateway IP address: 16.07.80.156
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 9
PEswitch 900TX – slot 3
SET IN-BAND INTERFACE DEFAULT GATEWAY ADDRESS
Format: The standard 4 octet dotted decimal notation in which
each octet of the address is represented as a decimal
value, separated by a ’.’ character.
example: 16.20.40.156
To delete the IP address, enter 0 in the appropriate
address field.

Default Gateway address [] : 16.07.80.156

Return

Default Gateway Address set
Press Return for Main Menu ...

Enter the module’s default gateway
IP address, then press Return.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade
This option allows you to upgrade the module firmware (in nonvolatile Flash
memory). It prompts you to enter the load image file name and the IP address of your
TFTP (Trivial File Transfer Protocol) load host.
Before initiating this option, be sure that the module that you are upgrading has been
configured with an IP address. If the module is not configured with an IP address, you
can still upgrade the module by selecting the Downline Upgrade option (option
[9] ) from the DEChub 900 MultiSwitch INSTALLATION MENU. Refer to the
DEChub 900 MultiSwitch Owner’s Manual for more information.
NOTE:

The module’s IP address is retained at the completion of
the downline upgrade process.

The following is an example of an image file name and an IP address:
desbf100.bin and 16.20.54.156
The format of the image file name is specified according to the conventions used by
your TFTP load host.
CAUTION

If power is interrupted during Stage 3 of the DLU process,
the firmware image can become corrupted. Do not turn off
power to the unit or perform any action that can cause the
unit to lose power during Stage 3 of the DLU process.

The Downline Upgrade (DLU) Process
The DLU process consists of four stages:

•

Stage 1 — Transferring Firmware Image

•

Stage 2 — Verifying Firmware Image

•

Stage 3 — Writing New Firmware Image into Nonvolatile Storage

•

Stage 4 — Module Reset and Self-Test

Table 1 describes what happens during each stage of the DLU Process. An
(expanded) example of the screen displays follows the description.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
Table 1

DLU Process Description

Stage

What Happens

The new firmware image from the TFTP load host is transported across the network, and placed into a temporary storage buffer in the module.
Indications that this stage is in progress include:
• Module status — functional, and manageable.
• Module can respond to management requests.
• LED display — normal operational.
• HUB Manager display — PEswitch 900TX
up
• Typical time to complete this stage — approximately 1 minute.
However, due to variances in network configurations (load path, bit
rate, and traffic levels), this stage of the DLU process can take up to
10 minutes to complete.

The module verifies that the firmware image is correct after
Stage 1 is complete.
Indications that this stage is in progress include:
• Module status — functional.
• Module can respond to management requests.
• LED display — normal operational.
• HUB Manager display — PEswitch 900TX
up
• Typical time to complete this stage — normally 1 second.

CAUTION

The new firmware image is transferred from the module’s temporary storage buffer to the Flash RAM, overwriting the old
firmware image.
!

If power is interrupted during Stage 3 of the DLU process, the
firmware image can become corrupted. Do not turn off power to
the unit or perform any action that can cause the unit to lose
power during Stage 3 of the DLU process.

(continued on next page)

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
Table 1 (Cont.)
Stage

DLU Process Description

What Happens
Indications that this stage is in progress include:
• Module status — not functional.
• Module cannot respond to management requests.
• LED display — the following sequence is displayed:
1. Port State LED 4 lights (green) for about 1 minute.
2. Port State
LED 5 lights (green) for up to 2 minutes1.
3. After Steps 1 and 2 are completed, all Port State
LEDs flash alternately (green/yellow) for 10 seconds2.
• HUB Manager display — PEswitch 900TX
unknown

• Typical time to complete this stage — approximately 3 minutes.
The module resets, runs self-test, and then begins executing
the new firmware image.
Indications that this stage is in progress include:
• Module status — not functional.
• Module cannot respond to management requests.
• LED display — (standard self-test pattern) Port State
flash, indicating various subroutines are running.

LEDs

• HUB Manager display — PEswitch 900TX
unknown
• Typical time to complete this stage — normally 1 minute.
After the successful completion of self-test, the Module OK LED
turns on and the module becomes fully manageable. Note also
that the HUB Manager display indicates:
PEswitch 900TX
up
1 If Port State

LEDs (4 and 5) do not light, the load did not succeed. Check that the load
host is operational.
2 If all Port State
LEDs turn on yellow (after Port State
LED 4 or 5 lights), a loading
error has occurred. If this occurs, retry the loading process. If the problem persists, contact
your Digital service representative.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
Updating Firmware from the PEswitch 900TX Installation Menu
When you select the Downline Upgrade option (option [10] ) from the
PEswitch 900TX INSTALLATION MENU, the initial setup screen display
appears (see the following example display). This screen identifies the option and
alerts users not to interrupt power during the downline load.
NOTE:

The screen display prompts can vary, depending on
whether the module is installed into a DEChub 900 or
into a DEChub ONE docking station.

The following is an example of the dialog associated with this option (user response
is shown in boldface type):

Enter selection : 10
PEswitch 900TX

DOWNLINE UPGRADE
This process upgrades the device’s firmware (in
nonvolatile Flash memory). Enter the IP address of
your TFTP (Trivial File Transfer Protocol) load host
and the image file name when prompted.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
IMPORTANT!
IMPORTANT!
IMPORTANT!
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
If power is interrupted during the downline load, the
*
*
firmware image can be corrupted. Do not turn off power *
*
to the unit or perform any action that can cause the
*
*
unit to lose power during a downline upgrade.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

... Press Return Key to Continue ...

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
After you press
Filename:

Return

, the screen display prompts you to Enter the Load

•

If the firmware image load file is located in the default TFTP directory, enter only
the firmware image load filename.

•

If the firmware image load file is Not located in the default TFTP directory, enter
the complete pathname along with the firmware image load filename.

The following screen display example shows the entry of a firmware image load file
that is located in the default TFTP directory (pathname not required):
Enter the Load Filename []

:desbf100.bin

Return

After you enter the firmware image load filename and press Return , the screen
prompts you to enter the IP address of the TFTP server (load host):
Enter the Load Host IP Address []

:16.20.54.156

Return

After you enter the IP address of the TFTP server and press Return , do the following:

IF the module is installed into a...

THEN Go to...

DEChub 900

DEChub 900 Configuration

DEChub ONE

DEChub ONE Configuration

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
DEChub 900 Configuration
The following screen and dialog appear when the module is installed into a
DEChub 900:
Load will be initiated over the In-Band network interface.
The device becomes nonfunctional for up to 10 minutes
during the time that the flash load is in progress.
When the load is complete the screen displays the message:
(Module Not Responding!) This is normal.
... Press Return Key to Start Load [Ctrl/C to abort]...
If you press Return , the DLU process is initiated over the in-band network interface.
Go to the section titled Starting the DLU Process if you pressed
selection.

Return

for this

DEChub ONE Configuration
When the module is installed into a DEChub ONE docking station, two network
interfaces are available for selection: the module’s in-band network interface, and
the OBM interface that resides on the DEChub ONE docking station.
Each network interface has its own IP address. When the firmware reads more than
one IP address (therefore, more than one network interface), it prompts you to select
a network interface to use for the load request.
NOTE:

If the module’s firmware reads only one IP address, the
display screen does not prompt you to select a network
interface. Pressing Return initiates the load over the
default in-band interface.

The following screen and dialog appear when the module is installed into a
DEChub ONE:

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
Load will be initiated over the In-Band network interface.

Would you like to use a different interface? Y/[N]:

Return

If you select the default [N], the setup screen displays the following message:
The device becomes nonfunctional for up to 10 minutes
during the time that the flash load is in progress.
... Press Return Key to Start Load [Ctrl/C to Abort]...

If you press Return , the DLU process is initiated over the in-band network interface.
Go to the section titled Starting the DLU Process if you pressed
selection.

Return

for this

If you selected Y at the screen prompt, the setup screen displays the following:
Interface
–––––––––
1
8

Description
–––––––––––
In-Band
OBM port

Enter the network interface to be used [1]:

If you select 8, then press Return , the setup screen displays the following message:
The device becomes nonfunctional for up to 10 minutes
during the time that the flash load is in progress.
... Press Return Key to Start Load [Ctrl/C to Abort]...

If you press Return the DLU process is initiated over the DEChub ONE docking
station’s OBM port.
Go to the section titled Starting the DLU Process if pressed Return for this selection.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
Starting the DLU Process
!

If power is interrupted during Stage 3 of the DLU
process, the firmware image can become corrupted. Do
not turn off power to the unit or perform any action that
can cause the unit to lose power during Stage 3 of the
DLU process.

NOTE:

Because of variances in network configurations (load
path, and traffic levels), this initial stage of the DLU
process can take up to 10 minutes to complete.

CAUTION

After you initiate the process (by pressing Return at the screen prompt), the screen
displays the following message:
DLU process started!
............................................................
...........................

The series of dots (. . . . . . .) indicate that the load is in progress.
When the series of dots end, the screen displays the following message:
Transfer complete.
After the firmware image is loaded into the module’s temporary storage buffer and
the new firmware image is validated, the DLU process overwrites the old firmware
image, in the module’s Flash RAM, with the new firmware image.
Because the module is nonfunctional during the Flash load process,
communications between the module and the Hub Manager cannot take place.
Therefore, the Hub manager status display and the setup screen display show the
following messages:
NOTE:

The following displays do not appear if you are initiating
the load process from a DEChub ONE docking station.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
Hub Manager Status Display
4: PEswitch 900TX
unknown
This is normal.
The following message is displayed on the setup screen (only if the module is
installed into a DEChub 900):
Device not Responding!

Connection closed!

This is normal.
DLU Process Completion
When the DLU process is complete, the module resets and initiates self-test. After
self-test completes successfully, the module exits from the DLU process and begins
LED turns on and the
the execution of the new firmware image. The Module OK
module becomes fully operational.
The screen displays one of the following:

•

If the module is installed into a DEChub ONE docking station, the screen displays the PEswitch 900TX INSTALLATION MENU.

•

If the module is installed into a DEChub 900, the screen displays the following
message:
Press Return for Main Menu ...

When you press Return , the screen displays the DEChub 900 MultiSwitch
INSTALLATION MENU.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[10] Downline Upgrade (Cont.)
The following illustration shows an (expanded) example of the setup screen displays:

Enter the Load Filename [] : desbf100.bin
Enter the Load Host IP Address []

: 16.20.54.156

Load will be initiated over the In-Band network interface.
Would you like to use a different interface? Y/[N]: Return
The device becomes nonfunctional for up to 10 minutes during
the time that the flash load is in progress.
When the load is complete the screen displays the message:
(Device Not Responding!) This is normal.
... Press Return Key to Start Load [Ctrl/C to abort]...
DLU process started!
............................................................
............................................................
Transfer complete.
Device Not Responding! Connection closed!

Press Return for Main Menu ...

Module communications
suspended during load
process. This is normal.

Enter the load image filename, then press Return.

Indicates that the downline
upgrade loading process
has been initiated.

Enter the IP address
of the TFTP server,
then press Return.

Only appears when the module is in a DEChub ONE
and both interfaces are configured with IP addresses.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[11] Set Out-of-Band Management (OBM) Interface IP Address
NOTE:

This selection is operational only when the module is in
standalone mode (for example, when it is installed into a
DEChub ONE docking station).

This option prompts you to enter the IP address of your out-of-band management
interface.
The OBM feature allows you to manage your module through the OBM port located
on the DEChub ONE docking station as an alternative to normal in-band
management. To enable out-of-band management, you need to assign an OBM IP
address and select an OBM port speed from the PEswitch
900TX
INSTALLATION MENU.
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 11
PEswitch 900TX
SET OUT-of-BAND MANAGEMENT (OBM) INTERFACE IP ADDRESS
Format: The standard 4 octet dotted decimal notation in which
each octet of the address is represented as a decimal
value, separated by a ’.’ character.
example: 16.20.40.156
To delete the IP address, enter 0 in the appropriate
address field.

IP address [] : 16.20.54.156

Return

Press Return for Main Menu ...

Enter the module’s OBM IP
address, then press Return.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[12] Set Out-of-Band Management (OBM) Port Speed
NOTE:

This selection is operational only when the module is
installed into a DEChub ONE docking station.

This option prompts you to select and enter the speed of your out-of-band
management (OBM) port.
NOTE:

The port speed at each end of the communications link
must be identical.

The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 12
PEswitch 900TX
SET OUT-OF-BAND (OBM) PORT SPEED
[1] 2400 baud
[2] 9600 baud
[3] 38400 baud

Enter selection [2] (9600) : 2

Return

OBM port speed set.
Press Return for Main Menu ...

The OBM port speed you select must
match the speed at the other end of
the communications link.

PEswitch 900TX Installation

Configuring the Module (Cont.)
[13] Module-Specific Options
NOTE:

This option appears as menu selection [11] when the
module is installed in the DEChub 900. Selection 1 from
this submenu takes effect only when the module is in
standalone mode.

This option provides module-specific selections for the user. When selected, the
option offers two selections: Set Ethernet configuration in standalone mode, and
Return to Main Menu.

Set Ethernet Configuration in Standalone Mode
This selection allows you to toggle the connection of port 4 between the module’s
front panel and the AUI port on a DEChub ONE docking station. Note that the
LED corresponding to that port changes to yellow, indicating that
Network Activity
the port is now connected to the AUI port on the DEChub ONE docking station.
The following is an example of the dialog associated with this option (user response
is shown in boldface type):
Enter selection : 13
PEswitch 900TX
PEswitch 900TX Installation
[1] Set Ethernet configuration in standalone mode
[2} Return to Main Menu

Enter selection : 1

Return

NOTE: This will only take effect when the product is standalone.
Change Port 4 to use docking station AUI port?
Press Y to confirm [N] : y

Return

This prompt changes to:
Change Port 4 to use front panel UTP port?

when port 4 is already connected to the docking station’s AUI port.

PEswitch 900TX Installation

LED Descriptions
The module LEDs provide dynamic indications of the status of the module. The LEDs
can be in various states (on, off, or flashing), and can change color (green or yellow)
depending on the operational status of the module or the level of activity on the
network. Table 2 shows the static states that are possible for each of the module
LEDs.
The FDDI Phy LEDs (see Table 3) indicate the status of the connection between the
module and the FDDI network.
Table 2

Module LED States

LED Name

Off

On (Green)

On (Yellow)

Flashing

Power

No power to
module.

Module receiving
power.

N/A.

Module
OK

Self-test failed Module passed
(if more than
self-test.
60 seconds
elapsed).

N/A.

Nonfatal
error.

Port
State

Bad or no
connection.

Port is in the
Port failure.
Forwarding state.

Port is in the
Backup,
Preforwarding
or
Disabled
state.

Network
Activity

No network
activity.

Port connected to
network through
the module’s
front panel
connector.

Intermittent
network
activity.

Table 3

FDDI PHY LED States
Off

LED
Name
PHY

Port connected
to network via
DEChub 900 or
DEChub ONE
AUI port.

No Color Green
Ready to
connect

Flashing
Yellow

Good
Link Error
connection Rate exceeded

Green /
Yellow

Green

Yellow

Disabled/
Broken

Illegal/
Standby/
unwanted Dual
connection homing

PEswitch 900TX Installation

Problem Solving Using the LEDs
When diagnosing a problem with the module, note that the problem is often indicated
by the combined states of the module LEDs. Table 4 lists the typical combined states
of the LEDs for various error conditions that can occur during initial installation of the
device, along with probable causes and corrective actions to take.

Normal Powerup
When the module power is initially turned on, the following events occur:
1. The module Power

LED lights as soon as power is applied to the unit.

2. The module initiates its built-in self-test. Flashing Port State
LEDs indicate
that the module is running various subroutines as part of the self-test.
3. After the successful completion of self-test (within 60 seconds after power is
LED lights, and remains lit.
applied), the Module OK
4. The remaining LEDs (Port State
and Network Activity
cate their operational status, as described in Table 4.
Table 4

LEDs) now indi-

Problem Solving Using the LEDs

Symptom

Probable Cause

Corrective Action

Power

The module is not
receiving +5Vdc.

Check the power status on the Hub
Manager status display.

LED is off.

If the Hub Manager status display indicates that power is available for this
module, press the release lever down
and reseat or remove the module.
Inspect the module’s 48- or 160-pin
connector for bent, broken, or dirty
pins.
If the problem persists, replace the
module.
(continued on next page)

PEswitch 900TX Installation

Problem Solving Using the LEDs (Cont.)
Table 4 (Cont.)

Problem Solving Using the LEDs
Probable Cause

Symptom
Module OK
is off.

LED

Corrective Action

Self-test in progress. Wait for self-test to complete.
Self-test failed.

If the LED does not light within
60 seconds, lift the release lever momentarily to repeat the
self-test.
If self-test fails again, replace
the module.
Contact your Digital Service
representative to correct the
problem.

Module OK
LED
is off and Port State
LED for Port 1 is
blinking green (once
every 8 seconds).

Module firmware
image is corrupted.

A nonfatal error
Module OK
LED
is flashing, but module occurred.
continues to operate
normally.
Port State
is off.

LED

Contact your Digital Service
representative to correct the
problem.

Cycle power. If the problem persists, contact your Digital Service representative to correct
the problem.

Port not connected
Missing, loose, or incorrect
or connection is bad. cable. Correct the cable connection.

Port State
LED
is on yellow.

Port failure.

Port State
LED
is flashing green.

The corresponding
None –– normal operation.
port is in one of the
following port states:
Backup,
Preforwarding or
Disabled.

Contact your Digital Service
representative to correct the
problem.

PEswitch 900TX Installation

Connector Pin Assignments
Internal and External Crossover Configurations
A crossover function must be implemented in every twisted-pair link. The crossover
function (internal or external) allows the transmitter of one device to connect to the
receiver of the device at the other end of the twisted-pair link.
The following illustration shows the use of straight-through and crossover cables for
connecting internal and external crossover type devices. The PEswitch 900TX uses
embedded crossover connectors:
External Crossover Configuration
8 MP

8 MJ
T

1
2
3
4
5
6
7
8

RX+
RX–
TX+

TX–

8 MJ

8 MP

1
2
3
4
5
6
7
8

RX+
RX–
TX+

TX–

Device (Repeater)

PEswitch 900TX

Crossover (X)
connector

Crossover (X)
cable (BN24F)

Internal Crossover Configuration
8 MP

8 MJ
T

1
2
3
4
5
6
7
8

RX+
RX–
TX+

TX–

8 MP

1
2
3
4
5
6
7
8

8 MJ
TX+
TX–
RX+

RX–

1
2
3
4
5
6
7
8

Device (MAU)

PEswitch 900TX

Crossover (X)
connector

1
2
3
4
5
6
7
8

Straight-through (=)
cable (BN25G)1

Straight-through
connector
LKG-9669-94I

1 If screened cabling is required, use BN26M.

PEswitch 900TX Installation

Connector Pin Assignments (Cont.)
H8571-J Adapter
The following illustration shows the H8571-J adapter (6-pin MMJ to 9-pin D-Sub
connector) and its pin assignments:

9 D–Sub(F)
6 MMJ
1
2
3
4
5
6

DCD
SD
RD
DTR
GND
DSR
RTS
CTS
RI

1
2
3
4
5
6
7
8
9

LKG-5342-91I

H8575-A Adapter
The following illustration shows the H8575-A adapter (6-pin MMJ connector to 25-pin
D-Sub connector) and its pin assignments:
25 D–Sub(F)
6 MMJ
DTR
TX+
TX–
RX–
RX+
DSR

1
2
3
4
5
6

1
2
3
4
5
6
7
8
20

H8575-A
Note that EOS/ESD protection devices are not shown on diagram
LKG–8793–93I

PEswitch 900TX Installation

Connector Pin Assignments (Cont.)
10BaseT (8-pin MJ) Port Connector
The following illustration shows the 8-pin MJ (crossover) connector and its pin
assignments:
Pin

Assignment

1
2
3
4
5
6
7
8

RX+
RX–
TX+
Unused
Unused
TX–
Unused
Unused

8-pin MJ connector
LKG-9552-94I

NOTE:

All 10BaseT port connectors on the module are
(crossover) connections.

PEswitch 900TX Installation

Product Specifications
Operating specifications for the PEswitch 900TX module are provided in Table 5.
The module’s acoustical specifications are listed in Table 6.
Table 5

PEswitch 900TX Operating Specifications

Parameter

Specification

Operating Environment
Operating Temperature1

5°C to 50°C (41°F to 122°F)

Relative Humidity

10% to 95% noncondensing

Altitude

Sea level to 4900 m (16,000 ft)

Power

50.5 W, total power
8.0 A, 5Vdc,
0.1 A, 12Vdc2
0.7 A, 15Vdc

Connectors
Module has: six Shielded 8-pin MJ (10BaseT ports).
DEChub ONE has: one 8-pin MJ, one DB-9, and one 15-pin D-Sub AUI connector.
DEChub ONE-MX has: one 8-pin MJ, one 6-pin MJ (OBR), one DB-9, one 15-pin
D-Sub, and one redundant power connector (D-Sub).
Physical
Height

44.45 cm (17.5 in)

Width

4.45 cm (1.75 in)

Depth

15.25 cm (6 in); 25.40 cm (10.0 in) with a
DEChub ONE docking station.

Weight

1.8 kg (4 lb)3

Certification
CE, CSA, FCC,TÜV, UL, VCCI.
1 For sites above 4900 m (16,000 ft), decrease the operating temperature specification by

1.8°C for each 1000 m or 3.2°F for each 3200 ft.
2 The 12V power in the DEChub 900 is derived from the 15V power source. Although it is

listed separately in the product specifications, the 12V requirements are included in the 15V
power total.
3 Include an additional 1.59 kg (3.5 lb) when attached to a DEChub ONE; when attached to a
DEChub ONE-MX, add 2.10 kg (4.63 lb).

PEswitch 900TX Installation

Product Specifications (Cont.)

Table 6

Acoustical Specifications
Acoustics — Declared values per ISO 9296 and ISO 77791
Sound Power Level
LWAd, B

Sound Pressure Level
LpAm, dBA
(bystander positions)

Idle/Operate

DESBF-MA

5.0

DESBF-MA + DEHUA

5.3

DESBF-MA + DEF1H

5.4

Product

Schallemissionswerte — Werteangaben nach ISO 9296 und ISO 7779/DIN EN277792
Schalleistungspegel
LWAd, B

Schalldruckpegel
LpAm, dBA
(Zuschauerpositionen)

Leerlauf/Betrieb

DESBF-MA

5,0

DESBF-MA + DEHUA

5,3

DESBF-MA + DEF1H

5,4

Produkt

1 Current values for specific configurations are available from Digital Equipment Corporation

representatives. 1 B = 10 dBA.
2 Aktuelle Werte für spezielle Ausrüstungsstufen sind über die Digital Equipment Vertretungen

erhältlich. 1 B = 10 dBA.

PEswitch 900TX Installation

Associated Documents
The following documents provide related information about the module. Ordering
information is provided at the back of this manual.

Title and Order Number

Description

DEChub 900 MultiSwitch
Owner’s Manual
EK–DH2MS–OM

Provides installation, use, security, and
troubleshooting information.

DEChub ONE Installation
EK–DEHU2–IN

Provides installation and operation guidelines
for single-slot hub configuration, including
rack-mount options and cabling.

DEChub ONE-MX Installation
EK–DEF1H–IN

Describes the DEChub ONE-MX single-slot
hub and how to install DEChub full-height
network modules for standalone use.

HUBwatch Installation and
Configuration
AA–Q0FXB–TE

Provides information for installing and
configuring HUBwatch for Open VMS V3.0 and
HUBwatch for Windows V2.0.

HUBwatch Use
AA–PW4BC–TE

Provides network management, and DEChub
functionality information for HUBwatch for
Open VMS V3.0.

Using DECndu Plus
(MS–DOS)
AV–PYVVA–TE

Provides the instructions to upgrade the
firmware in an MS–DOS environment of
selected network devices using Digital’s
Network Device Upgrade (DECndu) Plus utility.

Using DECndu Plus
(ULTRIX RISC)
AV–PYVTA–TE

Provides the instructions to upgrade the
firmware in an ULTRIX RISC environment of
selected network devices using Digital’s
Network Device Upgrade (DECndu) Plus utility.

Using DECndu Plus
(OpenVMS VAX)
AV–PYVRA–TE

Provides instructions to upgrade the firmware
in an OpenVMS VAX environment of selected
network devices using Digital’s Network Device
Upgrade (DECndu) Plus utility.

OPEN DECconnect
Applications Guide
EC–G2570–42

Provides planning and installation information
for systems based on Digital’s OPEN
DECconnect System and networking products.

Bridge and Extended
LAN,Reference
EK–DEBAM–HR

Describes how bridges are used to create
extended local area networks (LANs).

PEswitch 900TX Installation

HOW TO ORDER ADDITIONAL DOCUMENTATION
DIRECT TELEPHONE ORDERS
In Continental USA
call 1-800-DIGITAL
(1-800–344-4825)

In Canada
call 1–800–267–6215

In New Hampshire,
Alaska or Hawaii
call 1–603–884–6660

ELECTRONIC ORDERS (U.S. ONLY)
Dial 1-800-dec-demo with any VT100 or VT200
compatible terminal and a 1200 baud modem.
If you need assistance, call 1-800-DIGITAL (1-800-344-4825)

DIRECT MAIL ORDERS (U.S. and Puerto Rico*)
DIGITAL EQUIPMENT CORPORATION
P.O. Box CS2008
Nashua, New Hampshire 03061

DIRECT MAIL ORDERS (Canada)
DIGITAL EQUIPMENT OF CANADA LTD.
940 Belfast Road
Ottawa, Ontario, Canada K1G 4C2
Attn: A&SG Business Manager

INTERNATIONAL
DIGITAL EQUIPMENT CORPORATION
A&SG Business Manager
c/o Digital’s local subsidiary
or approved distributor

Internal orders should be placed through U.S. Software Supply Business (SSB),
Digital Equipment Corporation, 10 Cotton Rd. Nashua, NH. 03063-1260

*Any prepaid order from Puerto Rico must be placed
with the Local Digital Subsidiary:
809–754–7575

PEswitch 900TX Installation
EK-DESBF-IN. A01
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