Netelligent 2008/2016
10Base-T Repeater
User Guide
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NOTICE
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective
companies.
1996 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq
Registered United States Patent and Trademark Office.
Netelligent is a trademark of Compaq Computer Corporation.
Compaq Netelligent 2008/2016 10Base-T Repeater User Guide
Third Edition (August 1996)
Part Number 185814-003
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Federal Communications Commission Notice
This equipment has been tested and found to comply with the limits for a Class A digital device, 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 generates, uses
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions in this
manual, may cause interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be required to correct the interference at his
own expense.
Class A devices bear a label indicating the interference potential of the device as well as additional operating
instructions for the user, such as the following: This device complies with Part 15 of the Federal
Communications Commission (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.
Canadian Department of Communications
v
Radio Frequency Statement
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus 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 numriques de la classe A prescrites dans le Règlement sur le brouillage radioélectrique édicté par le
ministères des Communications du Canada.
Modifications
The FCC requires the user to be notified that any changes or modifications made to this device that are not
expressly approved by Compaq Computer Corporation may void the user’s authority to operate the equipment.
Emissions
This equipment complies with EMC directive 89/336/EEC (ITE), which includes EN50081-1 CLASS 1: 1992
(EN55022/CISPR 22 for Class A ITE). It also complies with FCC Class A.
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vi
European Union Notice
Products with the CE (Community European) Marking comply with both the EMC Directive (89/336/EEC)
and the Low Voltage Directive (73/23/EEC) issued by the Commission of the European Community.
Compliance with these directives implies conformity to the following European Norms:
EN55022 (CISPR 22) - Electromagnetic Interference
■
EN50082-1 (IEC801-2, IEC801-3, IEC801-4) - Electromagnetic Immunity
■
EN60950 (IEC950) - Product Safety
■
Safety
This equipment complies with UL 1950, Second Edition; CAN/CSA C22.2 No. 950-93, 73/23/EEC Low
Voltage Directive; TUV Rheinland EN60950, 1988; A1/1990, 1993; and A2/1992, 1992, 1993.
Immunity
This equipment complies with EMC directive 89/336/EEC (ITE), which includes EN 50082-1:
IEC 801-2 (Electrostatic Discharge)
■
IEC 801-3 (Radiated Immunity)
■
IEC 801-4 (Electrical Fast Transient/Burst)
■
EN55101-4 (Conducted Immunity) (not currently required)
■
Lithium Battery
The non-volatile RAM chip (Socket U8) on the repeater’s motherboard contains a non-replaceable lithium
battery. Only trained service personnel should dispose of this chip.
La puce mémoire non volatile (encoche U8) contient une pile au lithium non remplaçable. L’élimination de
cette puce devrait être confiée à un personnel qualifié.
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vii
Contents
Preface
Chapter 1
Overview
Features........................................................................................................................1-1
Repeater Components ..................................................................................................1-4
LED Indicators......................................................................................................1-4
RJ-45 Ports............................................................................................................1-5
Media Expansion Port...........................................................................................1-5
Repeater Expansion Ports .....................................................................................1-6
Serial COM Port....................................................................................................1-7
Uplink Switch .......................................................................................................1-9
Lithium Battery.....................................................................................................1-9
Chapter 2
Planning Repeater Installation
Before You Begin ........................................................................................................2-1
Installation Requirements.............................................................................................2-1
Environmental Requirements................................................................................2-1
Electrical Requirements........................................................................................2-1
Spatial Requirements ............................................................................................2-2
Twisted-Pair (UTP/STP) Wire Requirements.......................................................2-3
Repeater Expansion Port Cable.............................................................................2-5
Media Expansion Port Cable.................................................................................2-6
Modem Cable........................................................................................................2-6
System Planning Charts ...............................................................................................2-7
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viii
Chapter 3
Installing the Repeater
Mounting the Repeater.................................................................................................3-1
Attaching the Rubber Feet ....................................................................................3-1
Rack-Mounting the Repeater ................................................................................3-1
Installing an Alternate Media Connector .....................................................................3-2
Setting Jumpers for a BNC AMC .........................................................................3-3
Inserting the AMC ................................................................................................3-4
Connecting Twisted-Pair Cable ...................................................................................3-5
Interconnecting Repeaters............................................................................................3-6
Repeater Expansion Port.......................................................................................3-6
Multi-Floor Configuration ....................................................................................3-9
Setting the Uplink Switch...................................................................................3-10
Segmenting Repeaters................................................................................................3-11
Backup Port................................................................................................................3-13
Connecting Power......................................................................................................3-14
Power-On Self Test and Initialization........................................................................3-15
Non-Volatile Memory Check.....................................................................................3-15
Chapter 4
Administration and Management
Boot and Runtime Overview........................................................................................4-1
Boot.......................................................................................................................4-1
Runtime.................................................................................................................4-1
Configuring the Repeater During the Boot Process....................................................4-2
XMODEM Text Configuration File .....................................................................4-3
BOOTP Server......................................................................................................4-9
Reverse ARP Server............................................................................................4-12
NVRAM Usage..........................................................................................................4-12
Runtime Features .......................................................................................................4-14
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ix
Backup Port Usage..............................................................................................4-14
Intrusion Protection.............................................................................................4-15
RJ-45 Autopolarity Reversal......................................................................................4-16
Supported Frame Types .............................................................................................4-16
Supported Protocols...................................................................................................4-16
TCP/IP Support...................................................................................................4-17
IPX Support ........................................................................................................4-17
IP / IPX Autodiscovery..............................................................................................4-18
IPX Autodiscovery..............................................................................................4-19
IP Autodiscovery ................................................................................................4-19
IPX-Based Smart Module Management Protocol......................................................4-20
Fault Processing.........................................................................................................4-20
Compaq-Specific Parameters.....................................................................................4-21
Using IPX...................................................................................................................4-21
Using SNMP (over IP and over IPX).........................................................................4-22
VT100 Management...................................................................................................4-22
VT100 Screens....................................................................................................4-23
Navigating the VT100 Interface .........................................................................4-23
Starting the Management Session.......................................................................4-24
Viewing System Information..............................................................................4-27
Viewing the Stack Configuration........................................................................4-28
Viewing the Backup Port Configuration.............................................................4-29
Viewing Port Statistics........................................................................................4-31
Changing Your Password....................................................................................4-32
Downloading Firmware ......................................................................................4-33
Setting Up the Modem........................................................................................4-35
Logging Out of the Management Session...........................................................4-36
SNMP Management...................................................................................................4-36
Supported MIBs.........................................................................................................4-37
Statistics..............................................................................................................4-38
Traps ...................................................................................................................4-39
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x
Novell NMS HMI Compliance...........................................................................4-41
Out-of-Band Management (SLIP) ......................................................................4-42
Updating Flash...........................................................................................................4-42
Using XMODEM................................................................................................4-43
Using a BOOTP and TFTP Server......................................................................4-43
Using TFTP via MIB Variables..........................................................................4-44
Using TFTP Over SLIP ......................................................................................4-44
Repeater MAC Address .............................................................................................4-45
Appendix A - Specifications
Glossary
Index
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Preface
This manual includes information about how to install, configure, and operate
the Compaq Netelligent 2008/2016 10Base-T repeaters. We recommend that
you read all chapters in this manual to become familiar with the repeater's
features and to ensure a successful installation.
Intended Reader
This manual is written for network administrators and technicians responsible
for hardware installation.
Organization of Contents
The contents of this guide are organized as follows:
xi
Chapter 1 Provides an overview of the repeater and describes the repeater's
features.
Chapter 2 Helps you plan the installation of the repeater.
Chapter 3 Provides instructions for installing and powering up the repeater,
installing an alternate media connector, and interconnecting and segmenting
repeaters.
Chapter 4 Provides information about repeater administration and
management, including SNMP management, error and fault processing, and
flash updates.
Appendix A Includes the repeater's electrical, physical, and environmental
specifications.
Glossary Provides terms used throughout this guide, as well as general
networking terms.
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1-1
Chapter 1
Overview
The Compaq Netelligent 2008/2016 10Base-T repeater is the ideal connectivity
solution for departmental Ethernet networks that contain 8 to 160 nodes. The
repeater is available in a 16-port model and an 8-port model. The repeater is
easy to configure, maintain, and expand. Each repeater is pre-configured with
management capability and is fully manageable under SNMP management
systems, such as Compaq Netelligent Management Software.
Features
Both repeater models include these features:
■
RJ-45 ports (16 for the 16-port; 8 for the 8-port) to connect UTP or STP
cabling to workstations and servers in a 10Base-T network
■
Two repeater expansion ports (IN and OUT) that allow up to ten
repeaters to be daisy-chained to accommodate network growth
■
Extended Repeater Architecture (ERA) allows the combined cabling for
all interconnected repeaters to extend up to 250 feet (76.22 meters). This
makes repeaters perfect for network installations that require repeaters
on multiple floors.
■
Front-panel uplink switch that converts RJ-45 Port 16 on a 16-port
repeater or Port 8 on an 8-port repeater to an uplinkable port so that the
repeater can connect to another repeater in a star topology
■
Serial port that supports out-of-band management and firmware
upgrades using SLIP (Telnet and TFTP) or a serial connection (VT100
and XMODEM).
■
In-band management and firmware upgrades using BOOTP/TFTP
■
Segmentable on a per repeater basis
■
LEDs that indicate power, segmentation, and collision status as well as
port activity
■
Full compatibility with the IEEE 802.3 10Base-T repeater specification
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1-2 Overview
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SNMP agent that is fully compatible with the IEEE 802.3K specification
and Novell’s HMI specification.
■
Maintains statistics at full Ethernet bandwidth
■
Manageable with SNMP-based management software, such as Compaq
Netelligent Management Software
■
Standalone, stackable with other repeaters, or mountable in a standard
19-inch rack
The 10Base-T repeater also includes one Media Expansion Port (MEP) with slide-in
connector that supports optional BNC (Thinnet), AUI (DB-15), and Fiber (10BASE-FL)
Alternate Media Connectors (AMCs).
Figures 1-1 and 1-2 show the 16-port and 8-port repeater front panel. Figure
1-3 shows the back panel for both versions:
Power/Segmentation/
Collision/Media Expansion Port
LED Indicators
1 2 3 4 5 6 7 9 10 11 12 13 14 15 168
PWR
Media Expansion
Port
Media Expansion Port
for Alternate Media Connector
(AUI, BNC, or Fiber)
SEG
COL
MEP
XXXXXXXXXXXXXXX
Figure 1-1. 16-Port Repeater Front Panel
RJ-45 Ports and LEDs
UP LINK Switch
uplinkable port)
(for converting
Port 16 to
COM PORT
UP LINK
MDI MDI-X
Serial COM Port
(for out-of-band management
and firmware upgrade)
EXPANSION
IN OUT
Repeater Expansion Ports
(for interconnecting up to
10 16-Port Repeaters)
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1-3
Power/Segmentation/
Collision LED Indicators
RJ-45 Ports and LEDs
PWR
SEG
COL
Figure 1-2. 8-Port Repeater Front Panel
Power Cord Connector
Figure 1-3. Repeater Back Panel
12 34 5 678
XXXXXXX
UP LINK Switch
(for converting
Port 8 to
uplinkable port)
Serial COM Port
(for out-of-band management
and firmware upgrade)
UP LINK
MDI MDI-X
COM PORT
EXPANSION
IN OUT
Repeater Expansion Ports
(for interconnecting up to
10 16-Port Repeaters)
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1-4 Overview
Repeater Components
This section provides an overview of the repeater’s components including the
LED indicators, connection ports, and uplink switch.
LED Indicators
The 10base-T repeater features several LED indicators that help you monitor
and manage the repeater. The LEDs on the left side of the front panel provide
the power, segmentation, and collision status of the repeater. The LEDs above
the RJ-45 ports indicate activity at those ports. The repeater also provides an
LED that indicates any activity on the Media Expansion Port (MEP).
The following table lists the possible colors and statuses of each LED and
describes the meaning of each condition.
Table 1-1
LED Conditions and Descriptions
LED Color Description
PWR LED
SEG LED Yellow The repeater is segmented (isolated from the Ethernet backplane)
COL LED Flashing Yellow Slow flashing indicates light collisions; fast flashing indicates heavy collisions
Yellow The repeater is booting up
Flashing Yellow There is some type of repeater failure
Green The repeater is operating
OFF The repeater is powered down.
Off The repeater is unsegmented (connected to the Ethernet backplane).
OFF No collisions are occurring
continued
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1-5
MEP LED Yellow The port is in a partitioned state
(16-Port Only) Green The Fiber port is in a link OK state.
Flashing Green The port is in a receiving state.
OFF A link fail state occurred at the Fiber port or there is no connection at the
Fiber port.
UTP Status
LEDs
NOTE: LEDs listed as yellow might appear orange on the repeater’s front panel.
Yellow The port is in a partitioned state.
Green The port is in a link OK state.
Flashing Green The port is in a receiving state.
OFF The port link state failed or there is no connection at the port.
RJ-45 Ports
The 16-port repeater has 16 RJ-45 ports and the 8-port repeater has 8 RJ-45
ports. These ports let you connect UTP or STP cabling to workstations and
servers in a 10Base-T network.
Media Expansion Port
The 10Base-T repeater has a Media Expansion Port (MEP) that lets you install
one of the three optional Alternate Media Connectors (AMCs, sold separately)
shown in Figure 1-4:
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1-6 Overview
Optional Alternate Media Connectors
(Thinnet)
Figure 1-4. Alternate Media Connectors
■
BNC for Thinnet (Part Number 267064-001)
■
DB-15 for AUI wiring (Part Number 267063-001)
■
Fiber (Part Number 267065-001)
AUI ConnectorBNC Connector
Fiber Connector
(10BASE-FL)
NOTES:
th
— The MEP is the 17
logical port on the repeater.
— Link test is available for the fiber optic AMC (i.e., hardware is always
enabled, but firmware can effectively disable link test). Link test is not
available for AUI or BNC AMCs.
Repeater Expansion Ports
The Repeater Expansion Ports (REPs) let you interconnect up to 10 repeaters to
form a single logical stack. Each REP consists of a standard RJ-45 connector.
The OUT REP of one repeater connects to the IN REP of the repeater located
immediately above, using a standard 8-wire (four twisted pairs) UTP cable
(Figure 1-5).
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1-7
Repeater 1
Repeater 2
Figure 1-5. Repeater Expansion Ports
NOTE:
port repeater. This allows both types of repeaters to coexist in the same stack.
Serial COM Port
The repeater has a serial COM port that uses a 9-pin D male connector with a
standard AT pinout. This port enables the following operations:
■
XMODEM downloads of text configuration files
■
XMODEM Flash downloads
16
16
MDI MDI-X
MDI MDI-X
COM PORT
COM PORT
EXPANSIONUP LINK
IN
EXPANSIONUP LINK
IN OUT
Repeater Expansion Cable
(Standard Cat 3 or Higher UTP/STP)
OUT
The REPs on the 8-port repeater are compatible with the REPs on the 16-
■
SLIP (Serial Line Internet Protocol) functions including remote (out-ofband) management and TFTP Flash downloads
16
MDI MDI-X
COM PORT
Serial COM Port
(for out-of-band management
and Flash downloads)
Figure 1-6. Serial COM Port
EXPANSIONUP LINK
IN OUT
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1-8 Overview
Serial Port Pinouts
The repeater uses five out of the nine available pins on the serial port DB-9
connector. The following illustration shows the used pin numbers (circled), the
abbreviated names, and descriptions.
Serial Port (DB-9) Pinouts
12345
6789
Figure 1-7
NOTE
: Serial Port Pinouts
: If you are using a modem, set it for DTR override. This ensures that the
Pin No.
1
2
3
4
5
6
7
8
9
Name Description
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
modem can accept data.
Data carrier detect
Receive data
Transmit data
Data terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
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1-9
Uplink Switch
The uplink switch allows the eighth port on the 8-port repeater and the sixteenth
port on the 16-port repeater to function as either a standard IN RJ-45 port or an
uplinkable OUT RJ-45 port.
Uplinkable
"OUT" Port
Figure 1-8.
UP LINK
MDI MDI-X
16
Uplink Switch
MDI MDI-X
COM PORT
Standard
"IN" Repeater Port
(Default)
EXPANSIONUP LINK
IN OUT
IN ports use an internal crossover of the receive and transmit lines, enabling the
port to connect to a network interface card using standard 8-wire UTP cable.
OUT ports use a straight-through (uncrossed) connection, enabling the port to
connect to any IN port of another repeater located higher in the stack. This
allows two isolated repeaters to be on the same segment.
Lithium Battery
For information about the lithium battery, see the “Notice” section at the front
of this guide.
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2-1
Chapter 2
Planning Repeater Installation
This chapter contains information to help you prepare for installing the
Netelligent 2008 or 2016 repeater.
Before You Begin
Before you start to install the repeater, verify that this package contains the
following items:
■
Netelligent 2008 8-port or 2016 16-port 10Base-T repeater
■
Shielded AC power cord
■
One repeater expansion port cable (Category 3 UTP)
■
Four adhesive-backed rubber feet
Installation Requirements
To help ensure a correct installation, read this section to determine the
environmental, electrical, spatial, and cable requirements.
Environmental Requirements
Be sure the operating environment for the repeater is within the
following ranges:
■
Temperature: 32° to 120° F (0° to 49° C)
■
Humidity: 5% to 95% (non-condensing)
■
Altitude: 0 to 10,000 feet
Electrical Requirements
The electrical requirements for a repeater are as follows:
■
Voltage: 100 to 240 VAC
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2-2 Planning Repeater Installation
■
Frequency: 50 Hz 60 Hz
■
Power: 0.25 A to 0.5 A maximum
CAUTION: The power outlet must be a non-switched, three-pronged,
grounded outlet. Do not use a three-to-two pronged adapter at the outlet.
Doing so may result in electrical shock and/or damage to the repeater.
NOTE: If the supplied shielded power cord is lost or damaged, replace it with an
identical shielded power cord set to ensure emissions compliance.
Spatial Requirements
The repeater's dimensions are 1.75 x 17.00 x 8.4 inches, 4.44 x 43.18 x 21.34
centimeters (HxWxD).
You can interconnect up to ten repeaters in one stack. If there is not enough
space to mount the repeaters in a single rack or stack them on a single shelf, or
if you want to place the repeaters in different locations, you can place them side
by side on separate shelves or in separate racks. If this is necessary, you will
need longer repeater expansion port cables to connect the repeaters. See the
“Cable Requirements” section in this chapter for more information.
Be sure to allow at least 2 inches (5.1 centimeters) on each side of the repeater
for proper air circulation and cable connections.
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2-3
Twisted-Pair (UTP/STP) Wire Requirements
The twisted-pair wiring you use to connect the repeater's RJ-45 ports must meet
the following minimum specifications and requirements to ensure long-term
LAN reliability.
■
The wiring must be shielded or unshielded twisted-pair (STP/UTP),
Category 5.
■
Two pairs of wiring are required.
■
Depending on building codes, different insulation materials may be
required. Plenum-rated or TEFLON-coated wiring may be required in
some areas.
■
The wire gauge should be between 18 and 26 AWG. (Most telephone
installations use 24-gauge wiring.)
■
UTP wire should meet the following requirements:
❏
Solid copper
❏
Nominal capacitance: less than 16 pF/ft
❏
Nominal impedance: 100 Ohms
❏
Nominal attenuation: less than 11.5 db
CAUTION: Never use gray satin station cable for connecting a repeater.
This flat cable, typically used for connecting telephones to wall jacks, is
incompatible with 10Base-TX systems.
Straight-through twisted-pair cable is typically used to connect a repeater to a
server or workstation. In a straight-through connection, Pin 1 at the repeater
connects to Pin 1 at the server, Pin 2 at the repeater connects to Pin 2 at the
server, and so on. Figure 2-1 shows the locations of pins on a standard RJ-45
plug on a twisted-pair cable.
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2-4 Planning Repeater Installation
Twisted-Pair Cable
1
2
3
Pins
Figure 2-1. RJ-45 Plug Pin Locations
6
RJ-45 Plug
Table 2-1 shows the wiring in a straight-through and crossover twisted-pair
cable. (Pins 4, 5, 7, and 8 are not used.)
Table 2-1
Straight-Through Twisted-Pair Wiring
Twisted Pair Number Pin Number Signal
Description
11
2
23
6
TD+
TD-
RD+
RD-
To Pin Number Signal
Description
➔
➔
➔
➔
1
2
3
6
TD+
TD-
RD+
RD-
Crossover Twisted-Pair Wiring
Twisted Pair Number Pin Number Signal
11
23
Description
TD+
2
6
TD-
RD+
RD-
To Pin Number Signal
Description
➔
➔
➔
➔
3
6
1
2
RD+
RD-
TD+
TD-
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2-5
Repeater Expansion Port Cable
Standard 8-wire, Category 3, twisted-pair cable with straight-through wiring
connects the OUT repeater expansion port of one repeater to the IN repeater
expansion port of another repeater. Repeater expansion port cable has an RJ-45
plug at each end. Table 2-2 shows the correct wiring in a repeater expansion
port cable.
Table 2-2
Expansion Cable Wiring
Twisted Pair Number Pin Number To Pin Number
11
2
23
6
34
5
47
8
→→1
2
→→3
6
→→4
5
→→7
8
Stacks that contain only one repeater do not require a repeater expansion port
cable. However, to connect the repeater to another repeater located directly
above it, use the supplied 6-inch (15.24 cm) repeater expansion port cable.
If your repeater connections require a longer repeater expansion port cable, use
a cable that meets the above requirements. The cable can be from 6 inches
(15.24 cm) to 250 feet (76.2 m) long. The combined length of all repeater
expansion port cables in a stack should not exceed 250 feet.
NOTE:
Do not leave cables connected at only one end. Doing so reduces
performance.
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2-6 Planning Repeater Installation
Media Expansion Port Cable
You can install any one of three different Alternate Media Connectors in the
repeater's Media Expansion Port. The cable requirements for these modules are
as follows:
Table 2-3
Media Expansion Port Cable
Alternate Media Module Maximum Length
AUI 164 feet (50 meters)
BNC 607 feet (185 meters)
NOTE: Drive distances for fiber are based on 62.5/125 micrometer cable. Fiber AMCs also support
50/125 micrometer and 100/140 micrometer cable.
Modem Cable
You can use a standard EIA 232 cable to connect the serial COM port, located
on the front panel of the repeater, to a modem. This lets you perform
out-of-band management and Flash (firmware) downloads.
Fiber 10BASE 6562 feet (2000 meters)
Fiber FOIRL 3281 feet (1000 meters)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-7
System Planning Charts
The charts in Figures 2-2 and 2-3 provide a convenient way of planning the
connections for your repeater.
16-Port Repeater Setup and Cabling Chart
Date
Segment
Unit Number
Building
Location
Rack Mount
Table Mount
MAC Address
IP Address
Uplink Switch Setting
MDI-X (default)
MDI (uplinkable)
Installed Alternate Media Connector
None
AUI
BNC
Fiber
Port Connects To
HEP
IN OUT
8 9 10 11 12 13 14 15 16
7
6
4 5
Figure 2-2.
Setup and Cabling Chart
1 2 3
AMC
Netelligent 2008/2016 10Base-T Repeater User Guide
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2-8 Planning Repeater Installation
Rack Inventory Chart
Use this chart to record the components installed in a particular rack.
Wiring Closet Number
Rack Number
Installer
Date
Figure 2-3. Rack Inventory Chart
Example
16-port Repeater
16-port Repeater
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
Chapter 3
Installing the Repeater
This chapter explains how to mount the repeater, attach cables, install an
Alternate Media Connector, and interconnect several repeaters. It also provides
an overview of segmentation as it relates to the repeater.
Mounting the Repeater
You can place the repeater on a level surface (table top or shelf, for example) or
mount it in a standard EIA 19-inch rack.
Attaching the Rubber Feet
To place the repeater on a table top or shelf, attach the supplied adhesivebacked rubber feet as described in the following steps.
1. Turn the repeater over so that its bottom side faces up.
2. Remove the four rubber feet from their packaging.
3. Peel the protective paper backing OFF the rubber feet. Then position the
feet in the marked areas near the corners of the repeater and press the
feet into place.
4. Turn the repeater to its upright position and place it on the mounting
surface.
NOTE: Be sure you allow at least 2 inches (5.1 centimeters) on each side of the
repeater for proper air flow.
Rack-Mounting the Repeater
To mount the repeater in a rack, use the supplied installation kit. This kit
includes two side mounting brackets and eight screws to secure the brackets. To
attach the brackets, position them as shown in Figure 3-1. Then secure the
brackets with the screws supplied with the mounting kit.
Netelligent 2008/2016 10Base-T Repeater User Guide
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3-2 Installing the Repeater
13 14 15 16
XXX
MDI MDI-X
COM PORT
Figure 3-1. Attaching the Mounting Brackets
After you attach both mounting brackets, position the bracket slots over the
desired holes on the rack (Figure 3-2). Then insert and tighten the
mounting screws.
1 2 3 4 5 6 7 9 10 11 12 13 14 15 168
PWR
Media Expansion
SEG
COL
Port
MEP
XXXXXXXXXXXXXXX
Figure 3-2. Positioning the Repeater in a Rack
Installing an Alternate Media
EXPANSIONUP LINK
IN OUT
UP LINK
MDI MDI-X
COM PORT
EXPANSION
IN OUT
Connector
The 10Base-T repeater has a Media Expansion Port (MEP) that lets you install
one of the following three optional Alternate Media Connectors (AMCs,
sold separately):
■
BNC for connecting to a Thinnet backbone (Part No. 267064-001)
■
AUI for connecting to a Thicknet backbone (Part No. 267263-001)
■
Fiber for connecting to a 10Base-FL backbone (Part No. 267265-001)
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3-3
NOTES:
The MEP is the 17th logical port on the repeater.
Link test is available for the fiber optic AMC (hardware is always enabled, but
firmware can effectively disable link test), but not for the AUI or BNC AMCs.
Optional Alternate Media Connectors
(Thinnet)
Figure 3-3.
Optional Alternate Media Connectors
Setting Jumpers for a BNC AMC
If you install a BNC AMC, but do not connect a cable, you must set the
connector board jumper to disable the port. You can also use an external
terminator on this port. If you use a terminator, set the jumper to ON for
future connections.
NOTE: If there is no connection or external terminator at the BNC port, the jumper
must be set to OFF; otherwise, excessive collisions will occur and adversely affect
network performance.
Figure 3-4 shows the AW1 jumper settings.
AUI ConnectorBNC Connector
Fiber Connector
(10BASE-FL)
Netelligent 2008/2016 10Base-T Repeater User Guide
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3-4 Installing the Repeater
ON
Figure 3-4. AW1 Jumper Settings for a BNC AMC
Inserting the AMC
To insert an AMC, follow these steps:
1. Disconnect the repeater from power.
2. Remove the cover plate from the Media Expansion Port on the repeater's
front panel.
3. Insert the AMC through the Media Expansion Port hole and carefully
push the 20-pin male connector into the MEP socket on the repeater
motherboard until the AMC is secure.
AW1
Disabled
BNC
OFF
BNC
Enabled
(Default)
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