. . . . . . . . . . . . . . . . . . . . .
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 non
disclosure 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 register ed 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.
Microsoft and Windows
are registered trademarks of Microsoft Corporation.
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters
User Guide
First Edition (July 1996)
Part Number 268750-001
. . . . . . . . . . . . . . . . . . . .
v
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Federal Communications Commission Notice
Part 15 of th e Federal Commun ications Commissio n (FCC) Rules and Regu lations has
established Radio Frequency (RF) emission limits to provide an interference-free radio
frequency spectrum. Many electronic devices, including computers, generate RF energy
incidental to their intended function and are, therefore, covered by these rules. These
rules place computers and related peripheral devices into two classes, A and B,
depending upon their intended installation. Class A devices are those that may
reasonably be expected to be installed in a business or commercial environment. Class B
devices are those that may reasonably be expected to be installed in a residential
environment (i.e., personal computers). The FCC requires devices in both classes to bear
a label indicating the interference potential of the device as well as a ddition al opera ting
instructions for the user.
The rating label on the device shows which class (A or B) the equipment falls into. Class
B devices have an FCC ID on the label. Class A devices do not have an FCC ID on the
label. Once the class of the device is determined, refer to the following corresponding
statement.
NOTE:
If this equipment contains a Token Ring interface, this equipment is a Class A digital
device when the Token Ring interface is utilized.
Class A Equipment
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, may
cause harmful 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 personal expense.
. . . . . . . . . . . . . . . . . . . .
vi
Canadian Notice
This Class A digital apparatus meets all requirements of the Canadian InterferenceCausing Equipment Regulations.
Avis Canadien
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le
matériel brouilleur 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.
Cables
Connections to this device must be made with shielde d cables with metallic RFI/EMI
connector hoods in order to maintain compliance with FCC Rules and Regulations.
. . . . . . . . . . . . . . . . . . . .
vii
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Euopean Union (EU) Notice
Products with the CE 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.
Complia nce with these directive s implies confo rmity to the fo llowing Europ ean Norms
(in brackets are the equivalent international standards):
■ EN55022 (CISPR 22) - Electromagnetic Interference
■ EN50082-1 (IEC801-2, IEC801-3, IEC801-4) - Electromagnetic Immunity
■ UL 1950, Second Edition; CAN/CSA C22.2 No. 950-93; TUV Rheinland EN
60950; and 1988 + A1/1990+A2/1991 - Product Safety
Japanese Notice
. . . . . . . . . . . . . . . . . . . .
ix
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Contents
Chapter 1
Overview
Features........................................................................ 1-1
LED Indicators............................................................. 1-3
Package Contents......................................................... 1-5
Chapter 2
Setting Up the Repeater
Selecting a Location..................................................... 2-1
Environmental Requirements................................. 2-1
Electrical Requirements......................................... 2-1
Spatial Requirements............................................. 2-2
Connecting Power........................................................ 2-2
Domestic Connections........................................... 2-3
International Connections...................................... 2-4
Cabling Considerations ................................................ 2-6
Twisted-Pair Wire Specifications ................................. 2-6
Repeater-to-Workstation Connection..................... 2-9
Setting the Uplink Switch............................................. 2-10
Sample Network Configurations................................... 2-11
Single Repeater Configuration............................... 2-11
Multiple Repeater Configuration............................. 2-12
Maximum Repeater Path Model.............................. 2-13
AUI Connection...................................................... 2-14
BNC Model ............................................................ 2-15
Thin Ethernet Connections...................................... 2-16
. . . . . . . . . . . . . . . . . . . .
x
Appendix A
Technical Specifications
Dimensions............................................................. A-1
Connectors.............................................................. A-1
LED Indicators ....................................................... A-1
Environment........................................................... A-1
Cooling................................................................... A-2
Power Requirements............................................... A-2
Power Consumption................................................ A-2
Glossary
Index
. . . . . . . . . . . . . . . . . . . .
1-1
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Chapter 1
Overview
The Compaq Netelligent 1008/1009 10Base-T unmanaged repeaters are the
ideal connectivity solution for departmental Ethernet networks that contain
8 to 32 nodes. The repeaters are easy to configure and maintain, plus each
has built-in port management.
More importantly, the four repeater versions (basic, AUI, BNC, and UTP) let
you expand your network to other configurations without sacrificing your
existing network configuration. For example, if you currently have a 10BaseT RJ-45 backbone network, you can easily add eight inexpensive UTP ports
by choosing the basic repeater version. In the same way, you can connect a
10Base-5 (AUI) or a 10Base-2 (BNC) backbone network to your choice of
configurations by selecting the appropriate Netelligent 1000 repeater version.
You can even add a ninth 10Base-T port with the UTP repeater version.
Features
The repeater has the following features:
■
A basic configuration that contains eight RJ-45 ports for connecting
UTP or STP cabling to workstations and servers in a 10Base-T network;
optional connectors are available, making a total of nine ports
■
AUI connector (optional) for connecting to 10Base-5 networks
■
BNC connector (optional) for connection to 10Base-2 networks
■
UTP connector (optional) adds a ninth 10Base-T port
■
Front panel uplink switch converts RJ-45 Port 8 to an uplinkable port,
which lets you connect two repeaters in a star topology
■
LEDs indicate power, port activity, collision, and link status
■
Link integrity feature automatically partitions noisy segments and
detects broken cable segments
■
Compatible with the IEEE 802.3 10Base-T repeater specifications for
connection to shielded/unshielded twisted-pair wiring
. . . . . . . . . . . . . . . . . . . .
1-2
Overview
Figure 1-1 shows the repeater with the following options: basic configuration
with eight RJ-45 ports; AUI configuration (the AUI connector is located on
the back panel); the BNC and UTP configurations with BNC and UTP
connectors.
Power Cord Connector
AUI Connector
(Port 9)
Power Cord Connector
Back Panel for
Basic, BNC,
and UTP Repeaters
Netelligent 1009
Repeater, Includes
8 RJ-45 Ports +
1 BNC Connector
(Port 9)
9X
PWR
ACT
COL
LEDs
RJ-45 Ports
Power, Activity,
Collision LEDs
PWR
ACT
COL
UPLINK
MDI
MDI-X
Netelligent 1009
Repeater, Includes
8 RJ-45 Ports +
1 UTP Connector
(Port 9)
Netelligent 1008 Basic
Repeater, Includes
8 RJ-45 Ports
Netelligent 1009
Repeater, Includes
8 RJ-45 Ports +
1 AUI Connector
(Only the Back Panel
with Port 9 Is Shown)
Basic
BNC
UTP
AUI
PWR
ACT
COL
UPLINK
MDI
MDI-X
UPLINK
MDI
MDI-X
9X LED
Figure 1-1.
Netelligent 1008/1009 10Base-T Unmanaged Repeater Options
. . . . . . . . . . . . . . . . . . . .
1-3
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
LED Indicators
The repeater contains the following LEDs that monitor repeater status:
■
PWR, ACT, COL, and 9X
— these LEDs show the repeater's power
status (ON or OFF), the incoming traffic on the repeater (heavy, light, or
no activity), and the collision status (heavy or light activity); the 9X
LED is for the optional UTP port.
■
Link Status
— Each RJ-45 port is associated with a Link Status LED
that operates in the following manner:
❏
When you power up the repeater, the Link Status LEDs are ON
momentarily, then are OFF.
❏
When the repeater connects with either a powered network station
or another repeater, the Link Status LED associated with that port is
ON. When the connection breaks, the LED is OFF.
❏
If the repeater makes no connection, the Link Status LED is OFF.
The following illustration shows the locations of the LEDs and the
RJ-45 ports on the front panel of the repeater. Table 1-1 describes the
meaning of each LED display.
PWR
ACT
COL
9X
123
4
567
Power, Activity,
Collision LEDs
RJ-45 Ports
Link Status LEDs
Link Status LED
(UTP only)
Figure 1-2.
LED Locations on the Repeaters
. . . . . . . . . . . . . . . . . . . .
1-4
Overview
Table 1-1
LED Indicators
LED Flashing
Yellow
Green Flashing
Green
LED
OFF
PWR
Not used Power ON; normal
operations
Not used Power OFF
ACT
Not used Heavy activity
(incoming traffic)
on the port
Light activity
(incoming traffic)
on the port
No activity
(no
incoming
traffic on
port)
COL
* Not used Not used No
collisions
* Slow flashing = Light collisions
Fast flashing = Heavy collisions
Link
Status
(RJ-45
Port)
Not used Link OK for the
RJ-45 port
Not used Link failed
or no
connection
for the
RJ-45 port
NOTE:
Flashing Yellow LEDs may appear orange on the repeaters panel.
. . . . . . . . . . . . . . . . . . . .
1-5
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Package Contents
Before you start, verify that this package contains the following items:
■
Netelligent 1008 or 1009 10Base-T repeater, either in the domestic or
international version for the configuration specified:
❏
Domestic version for the following configurations:
• Basic: Netelligent 1008 8-Port 10Base-T Unmanaged Repeater
(Part Number 267033-001)
• AUI: Netelligent 1009 8-Port 10Base-T Unmanaged Repeater
+ 1 AUI port (Part Number 267026-001)
• BNC: Netelligent 1009 8-Port 10Base-T Unmanaged Repeater
+ 1 BNC port (Part Number 267032-001)
• UTP: Netelligent 1009 8-Port 10Base-T Unmanaged Repeater
+ 1 UTP port (Part Number 267027-001)
❏
International version for the following configurations:
• Basic: Netelligent 1008 8-Port 10Base-T Unmanaged Repeater
(Part Number 267028-001)
• AUI Netelligent 1009 8-Port 10Base-T Unmanaged Repeater
+ 1 AUI port (Part Number 267026-001)
• BNC: Netelligent 1009 8-Port 10Base-T Unmanaged Repeater
+ 1 BNC port (Part Number 267030-001)
• UTP: Netelligent 1009 8-Port 10Base-T Unmanaged Repeater
+ 1 UTP port (Part Number 267031-001)
■
Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
■
International power transformer, supplied
. . . . . . . . . . . . . . . . . . . .
2-1
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Chapter 2
Setting Up the Repeater
This chapter describes the basic requirements for setting up the repeater,
including environmental, electrical, and spatial requirements, as well as UTP
cabling specifications. It also explains how to power up the repeater, how to
make a basic repeater-to-workstation connection, and how to set up basic
network configurations.
Selecting a Location
You can place the repeater on a level surface (a desktop or cabinet, for
example) or mount it on a vertical surface using velcro attachments. Before
you select a location for the repeater, read this section to determine the
necessary environmental, electrical, and spatial 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 30,000 feet; 0 to 10,000 meters
Electrical Requirements
Be sure there is a commercial power outlet within 6 feet (1.8 meters) cord
distance of the repeater. If there is no outlet within this distance, use a power
strip or grounded extension cord to extend the range of the power cable. The
power outlet must be a non-switched, three-pronged, grounded outlet. The
electrical requirements for the repeater, see Appendix A, “Technical
Specifications” in this guide.
. . . . . . . . . . . . . . . . . . . .
2-2
Setting Up the Repeater
CAUTION:
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.
Spatial Requirements
The repeater's dimensions are 4.0 x 7.0 x 5.0 inches or 10.2 x 17.9 x 12.8 cm
(HxWxD). When you set the repeater on a level surface, allow at least
2 inches (5.1 cm) on each side of the repeater for proper air circulation.
If you place the repeater on a level surface, the rubber feet (attached to the
bottom of the repeater) help protect the surface and prevent the repeater
from slipping.
Connecting Power
The domestic and international power connections differ for the repeater.
Each is described below.
Domestic Connections
To connect the repeater to external, domestic power, follow
these steps:
1. Locate the power cord connector on the back of the repeater, as shown
in Figure 2-1.
. . . . . . . . . . . . . . . . . . . .
2-3
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Power Cord Connector
AUI Connector
(Port 9)
Power Cord Connector
Backpanel for
Basic, BNC, and
UTP Repeaters
Netelligent 1009
Repeater, Showing
AUI Connector and
Power Cord Connector
On Backpanel
AUI
Figure 2-1.
Connecting the Power Cord
2. Insert the power plug into the power cord connector on the back of the
repeater. Be sure the horizontal tab (see the example in Figure 2-2 for an
AUI connector) on the power plug faces the top of the repeater.
Lip of the
Power Plug
Power
Plug
Power Cord
Partial Back View of the Repeater
Showing the Power Outlet for an AUI
Figure 2-2.
Connecting Domestic Power
. . . . . . . . . . . . . . . . . . . .
2-4
Setting Up the Repeater
3. Insert the three-pronged plug on the other end of the power cord into a
non-switched, grounded power outlet on a wall, a power strip, or a
grounded extension cord. The power outlet should be near the repeater
and easily accessible (within the 6-foot, 1.8 meter, cord distance).
4.
When you restart the repeater, all the LEDs on the front panel
momentarily turn ON. This confirms that the repeater is working.
CAUTION:
When you power down the repeater, disconnect
the three-pronged plug from the power source. DO NOT
disconnect the plug from the power cord connector on the
repeater as this may cause a power surge that could damage
the unit.
International Connections
To connect the repeater to external, international power, follow
these steps:
1. Place the international power transformer (supplied) on a
flat surface.
2. Insert the plug on the power transformer cable into the power outlet in
the back of the repeater. Be sure the lip on the power plug faces the top
of the repeater (as illustrated for domestic connections in Figure 2-2).
3. Insert the plug of the IEC power cord into the three-pronged, power
transformer outlet, as shown in Figure 2-3:
. . . . . . . . . . . . . . . . . . . .
2-5
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Power
Transformer
IEC Power Cord
Plug on
IEC Power Cord
Female
Plug
Power
Transformer
Cord
Power
Outlet
Back View
Power
Transformer
Outlet
3-Pronged
IEC Plug
to a Grounded Outlet
Figure 2-3.
International Connections
4. Insert the three-pronged plug on the IEC power cord into a grounded
power source.
5. After the power transformer is plugged in, be sure the LEDs are ON. If
they are not, recheck all connections.
. . . . . . . . . . . . . . . . . . . .
2-6
Setting Up the Repeater
Cabling Considerations
This section outlines twisted-pair wire specifications and describes how to
make a simple direct connection between a repeater and a workstation.
Twisted-Pair Wire Specifications
To ensure long-term LAN reliability, be sure that the twisted-pair wiring
meets the following minimum specifications. You may need to install new
twisted-pair wiring if the wiring does not meet the following requirements:
■
The wiring must be shielded or unshielded twisted-pair (STP/UTP).
■
Two pairs of wires
■
Depending on building codes, different insulation materials may be
required. Plenum-rated or Teflon-coated wiring may be required in some
areas.
■
The UTP wire should meet the following specifications:
❏
Solid copper
❏
Nominal capacitance: Less than 16pF/foot
❏
Nominal impedance: 100 Ohms
❏
Nominal attenuation: Less than 11.5db
❏
Wire gauge: Between 18 and 26 AWG
■
The wiring has a maximum distance requirement of 328 feet (100
meters), which includes all cross-connect wire, wire in the walls, and
any drop cables from wall plates to workstations (see the next section to
determine the proper length). Maximum distances may be less for UTP
cable run underground, in conduit, or in large cable bundles.
■
The wiring must be in good condition and the insulation should not be
frayed or worn.
. . . . . . . . . . . . . . . . . . . .
2-7
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
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-T systems.
The repeater is compatible with all AT&T Type D wiring (D-Inside wiring)
and AT&T PDS wiring. You can also use IBM Type 1 wiring (with two
inside conductors).
Two types of D-Inside wiring will work with the repeater:
DW8
Uses stranded wires and is relatively flexible; is best for shorter
runs (less than 50 feet or 16.2 meters) within the same room
D8W
Uses solid conductors and is less flexible; is best for longer runs
through ceilings and/or walls
A modular cord is D-Inside wiring with RJ-45 plugs on each end. The
connection between a repeater and a workstation consists of four pairs of
straight-through, D-Inside wiring (the repeater uses only two pairs), as shown
in the following figures:
Brown-White 8
White-Brown 7
Green-White 6
Blue-White 5
White-Blue 4
White-Green 3
Orange-White 2
White-Orange 1
1 White-Orange
2 Orange-White
3 White-Green
4 White-Blue
5 Blue-White
6 Green-White
7 White-Brown
8 Brown-White
Figure 2-4.
D-Inside Wire
. . . . . . . . . . . . . . . . . . . .
2-8
Setting Up the Repeater
In this cable, the wire connected to Pin 1 must be twisted with the wire
connected to Pin 2, and the wire connected to Pin 3 must be twisted with the
wire connected to Pin 6. This is shown in Figure 2-5. Pins 4, 5, 7, and 8 are
reserved for telephone and other services.
Plug Pin #
Plug Pin #
Receive Pair
Transmit Pair
1
3
3
1
2
6
6
2
Figure 2-5.
Receive/Transmit Pair
Each RJ-45 jack on the repeater has the 10Base-T standard pin-out
shown below. A straight-through cable using the pair combinations
below provides the appropriate 10Base-T connection between the
repeater and the workstation.
Table 2-2
10Base-T Pin-Out
1 TD+
2 TD-
3 RX+
6 RX-
. . . . . . . . . . . . . . . . . . . .
2-9
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Repeater-to-Workstation Connection
To connect the repeater to a workstation, follow these steps:
1. Plug one end of the modular cord into a 10Base-T-equipped workstation.
2. Plug the other end of the modular cord directly into the desired port on
the repeater. The maximum end-to-end cable distance is 328 feet
(100 meters).
After you connect the workstation to the repeater and power on both
units, the repeater's PWR LED and the LED that corresponds to the
connected RJ-45 port should be ON. If the LEDs are not ON, check
the connections.
Figure 2-6.
Repeater-to-Workstation Connection
. . . . . . . . . . . . . . . . . . . .
2-10
Setting Up the Repeater
Setting the Uplink Switch
The uplink switch on the front panel of the repeater converts Port 8 to an
uplinkable port. This feature allows the repeater to connect to another
repeater in a star topology. The default setting for the uplink switch is MDIX (the standard RJ-45 port, not uplinked).
The uplink switch helps simplify twisted-pair wiring between repeaters by
reconfiguring Port 8 as an output port and eliminating the need for crossover
cables. Typically, the repeater's RJ-45 jacks function as input ports for
workstation connections. Connecting an input port from one repeater to an
input port of another repeater normally requires a special crossover cable that
reverses the receive and transmit pairs.
To change the switch to the desired position, use a small, slotted screwdriver,
or a similar tool, shown in Figure 2-7.
UPLINK
8
MDI
MDI-X
Standard
"IN" Repeater Port
(Default)
Uplinkable
"OUT" Port
UPLINK
MDI
MDI-X
Figure 2-7.
Setting the Uplink Switch
. . . . . . . . . . . . . . . . . . . .
2-11
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Sample Network Configurations
The following figures show several configurations for Netelligent 1000
10Base-T 8-port repeater LANs.
Single Repeater Configuration
Figure 2-8 shows one repeater connected to network stations within a
100 meter (328 foot) radius. You can place the repeater in a wiring closet or
next to network stations. In this example, Port 8 of the repeater is configured
as an input (MDI-X, the default) port to accommodate a workstation
connection.
Figure 2-8.
Single-Repeater Connection
. . . . . . . . . . . . . . . . . . . .
2-12
Setting Up the Repeater
Multiple Repeater Configuration
Figure 2-9 shows three repeaters connected with unshielded twisted-pair
wiring to form a larger network.
■
Repeater A is the primary concentrator.
■
Repeater B and Repeater C are uplinked (MDI position) to Repeater A.
■
Repeater B and Repeater C each have Port 8 configured as output
(uplinked) ports.
UPLINK SWITCH
(MDI Position)
UPLINK SWITCH
(MDI Position)
Repeater A
(Primary Concentrator)
Repeater B
Repeater C
Figure 2-9.
Uplinked (MDI) Connections
. . . . . . . . . . . . . . . . . . . .
2-13
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Maximum Repeater Path Model
Ethernet limits the total number of repeaters that can be in the path between
any two network stations. The repeater allows up to five repeaters between
any two nodes (network stations). Figure 2-10 shows an example of a
maximum transmission path.
Node 1
Node 2
Repeater 1
Repeater 5
Repeater 4
Repeater 2
Repeater 3
Figure 2-10.
Maximum Repeater Path Connection
NOTE:
For a maximum configuration, you can use repeaters to build a network of up
to 32 network stations: seven stations each on Repeaters 1 and 5 and six stations
each on Repeaters 2, 3, and 4, totaling 32 stations.
. . . . . . . . . . . . . . . . . . . .
2-14
Setting Up the Repeater
AUI Connections
Figure 2-11 shows connections for the repeater using AUI to a
10Base-5 backbone LAN.
10Base-5 Backbone LAN
Transceivers
AUI Connector
AUI Connector
AUI Connector
Figure 2-11.
AUI Connection
. . . . . . . . . . . . . . . . . . . .
2-15
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
BNC Model
Figure 2-12 shows three repeaters connected with thin Ethernet coaxial cable
(RG-58) to form a larger network. The total end-to-end length of this
segment should not exceed 606 feet (185 meters) and must be terminated on
each end with 50-ohm terminators.
185 Meters (606 Ft) Maximum
(End-to-End)
To other
Concentrators
50-Ohm
Terminator
Thin Coax
Figure 2-12.
BNC Connections
. . . . . . . . . . . . . . . . . . . .
2-16
Setting Up the Repeater
Thin Ethernet Connections
Figure 2-13 shows one repeater with a BNC connector for thin Ethernet
connections. You can use this BNC connector to connect to any thin Ethernet
segment or to daisy chain repeaters.
To make the connection, use a T-connector, and, if the repeater is the last
node on the segment, terminate the T-connector with a 50-ohm terminator.
T-Connector
50-Ohm
Terminator
Figure 2-13.
Ethernet Connections
. . . . . . . . . . . . . . . . . . . .
A-1
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Appendix A
Technical Specifications
The following information describes the technical requirements
for the repeater:
Dimensions
■
1.4 x 7.0 x 5.0 inches or 10.2 x 17.9 x 12.8 cm (HxWxD)
Connectors
■
Front panel connectors
❏
Eight RJ-45 for UTP/STP wiring
❏
BNC
❏
UTP
■
Back panel connectors
❏
AUI
❏
Power cord
LED Indicators
■
PWR (power status of the repeater)
■
ACT (activity on a port)
■
COL (collisions on a port)
■
RJ-45 port activity (LEDs 1 to 8 are for the AUI, BNC, and basic
repeater options; LED 9X is for the UTP port option)
Environment
■
Operating
❏
32° to 120° F; 0° to 49° C
❏
5% to 95% humidity (non-condensing)
❏
Altitude: 0 to 30,000 feet; 0 to 10,000 meters
. . . . . . . . . . . . . . . . . . . .
A-2
Technical Specifications
■
Storage
❏
32° to 151° F; 0° to 66° C
❏
5% to 95% humidity (non-condensing)
❏
Altitude: 0 to 30,000 feet; 0 to 9 kilometers
Cooling
■
Convection
Power Requirements
■
100 to 250 VAC
■
0.21 to 0.10 Amps maximum
■
50 to 60 Hz
Power Consumption
■
Typical: 7W Maximum 11 W
. . . . . . . . . . . . . . . . . . . .
G-1
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Glossary
10Base-2 An IEEE Standard (802.3) for local area
networks. Complying networks must be able to
carry information at a rate of 10 Mb/s over
distances up to 606 feet (185 meters) of thin
coaxial cable.
10Base-5 An IEEE Standard (802.3) for local area
networks. Complying networks must be
capable of carrying information at a rate of 10
Mb/s over distances up to 1640 feet (500
meters) of thick coaxial cable.
10Base-T An IEEE Standard (802.3) for local area
networks. Complying networks must be able to
carry information at a rate of 10 Mb/s over
distances up to 328 feet (100 meters) of
unshielded twisted-pair cable.
66-Type Wiring
Environment
Also called Premises Distribution System
(PDS). The AT&T wiring system in which the
telephone nodes and other communications
devices connect to the cross-connect block.
110-Type Wiring
Environment
Also called Premises Distribution Systems
(PDS). The AT&T wiring system in which the
telephone nodes and other communications
devices can be easily added and rearranged with
modular wiring components and patch cords.
802.3 An IEEE standard for Ethernet local area
networks based on Carrier Sense Multiple
Access with Collision Detection (CSMA/CD),
which includes 10Base-2, 10Base-5, and
10Base-T.
. . . . . . . . . . . . . . . . . . . .
G-2
Adapter A device that supports the interconnection of
different sizes and/or types of plugs.
Attachment Unit
Interface (AUI)
The interface between the medium attachment
unit (MAU) and a node within a local area
network (LAN).
Backplane The data bus connections that interconnects
different communication modules inside a
network concentrator.
BNC A thin Ethernet coax connector.
Bridged Tap (Stub) A cable (or cord) connected to another cable (or
cord) at a point other than its end. Such a tap
causes impairment of network signal
transmissions.
Carrier Sense The monitoring of a local area network by a
node to determine if another node is
transmitting.
Coaxial Cable A cable with at least one transmission line
consisting of two conductors, an inner
conductor, and an outer conductor insulated
from one another by a dielectric. Coaxial cable
carriers higher frequencies than twisted pair
cable and offers a broader bandwidth. It
commonly transmits video signals, but can also
be used for certain high-speed data applications.
. . . . . . . . . . . . . . . . . . . .
G-3
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Collision A condition that occurs when two nodes attempt
to transmit on the network at the same time.
When a collision occurs, both nodes recognize
the collision stop transmission wait for a
random time interval and then attempt to
retransmit.
Concentrator A device that provides connectivity between
data terminals in a network.
Conductor A medium such as copper wire that can carry
electrical current.
Configuration The layout of nodes and components in the
network.
Cross-Connect
Block
A panel on which the leads of station cable are
mounted so a technician or other wiring crafts
person or a system administrator can make
connections between the communications
devices wired to the cables.
Dielectric A substance that does not conduct electrical
current.
Ethernet
Transceiver
A device used in an Ethernet local area network
that couples data terminal equipment to other
transmission media.
Fiber Adapter A hardware device that converts System 4000
network signals between electrical signals on
twisted-pair wire and light pulses transmitted on
fiber optic cable.
. . . . . . . . . . . . . . . . . . . .
G-4
Fiber Optic Cable A transmission medium consisting of a core of
glass surrounded by strengthening material and
a protective jacket. Signals are transmitted as
light pulses and introduced into the optical fiber
by a laser or light emitting diodes (LEDs).
Jabber A condition in which the transmission of
network signals exceeds the maximum
allowable transmission time. Jabber may be
caused by a faulty node or wiring connection.
Link Integrity A diagnostic tool that continuously checks
wiring for breaks opens or shorts and notifies
the user if those conditions exist.
Local Area
Network (LAN)
A data communications network consisting of
electronic devices such as host computers, file
servers, and personal computers often
connected via twisted-pair wire or coaxial
cable. Typically, the network is limited to a
single premise.
Medium
Attachment Unit
(MAU)
A device used in a data station to couple the
data terminal equipment (DTE) to the
transmission medium.
Modular Cord A cord containing four twisted pairs of wires
with a modular plug on one or both ends.
Network Interface
Connector (NIC)
A plug-in expansion board that enables
computers to send and receive data through
the network.
Node A computer workstation or other device in
a network.
. . . . . . . . . . . . . . . . . . . .
G-5
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Plenum Cord A communications cord with fire-retardant
insulation generally used in suspended ceilings
and other places where air circulates back to the
building's air-conditioning system.
Port A concentrator connection that connects PCs
and other node devices to the network.
Satellite Closet A room where cross-connect hardware is
located and where cabling from wall jacks is
terminated.
Transceiver Cable A cable that connects two hardware devices one
having a D-type DCE connector and the other
having a D-type DTE connector. Also called an
“AUI'' cable.
Unshielded
Twisted Pair (UTP)
Wire
Two insulated copper wires twisted together to
reduce the potential for signal interference
between pairs. In cables greater than 25 pairs,
the twisted pairs are grouped and bound
together in a common cable sheath. Twisted
pair cable is the most common of transmission
media.
. . . . . . . . . . . . . . . . . . . .
I-1
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
Index
A
Amps
A-2
AUI
connection illustration
2-14
connector 1-1, A-1
port 1-5
B
Basic See Repeater, Basic
BNC
connector 1-1, 2-16
connectors
A-1
illustration of connection
2-15
port 1-5
C
Cooling
A-2
Crossover cables 2-10
D
D8W wiring 2-7
D-Inside wiring 2-7, 2-8
Domestic connections 2-3
DW8 wiring 2-7
E
Electrical shock 2-2
Ethernet 2-13, 2-16
Ethernet coaxial cable 2-15
Ethernet networks 1-1
H
Hz (power requirements)
A-2
I
IBM Type 1 wiring 2-7
IEC power cord 2-5
IEEE 802.3 1-1
International connections 2-4
International power
connections 2-5
L
LEDs
at power up 1-3, 2-4, 2-5
description of 1-3, 1-6
illustration 1-5
Link Status
list of 1-3
RJ-45 1-3
Link integrity 1-1
N
9X LED 1-3
. . . . . . . . . . . . . . . . . . . .
I-2
P
PDS wiring 2-7
Pinout, 10Base-T 2-8
Plenum-rated wiring 2-6
Power requirements
A-2
R
Repeater
adding to existing
network 1-1
AUI connection 2-14
Basic configuration 1-1
BNC connection 2-15,
2-16
connecting power 2-2
domestic power
connections 1-5, 2-3
electrical requirements
2-1
environmental
requirements 2-1
features 1-1
illustration 1-2
international power
connections 1-5, 2-4
selecting a location 2-1
multiple connections
2-12
network connection 2-11
package contents 1-5
part numbers 1-5
spatial requirements 2-2
Repeater, continued
technical specifications
A-1
to maximum number
2-13
to workstation connection
2-9
versions 1-1
Requirements
electrical 2-1
environmental 2-1
spatial 2-2
RJ-45 1-1, 1-5, 2-8 2-9
A-1
RJ-45 jack 2-8
S
Specifications,
See Requirements
Star topology 1-1
STP 2-6
STP cabling 1-1
T
Teflon-coated wiring 2-6
10Base-5 backbone LAN
2-14
Topology 2-10
Twisted-pair wiring 2-10
Twisted-pair wiring
requirements 2-.6
Type D wiring 2-7
. . . . . . . . . . . . . . . . . . . . .
I-3
Compaq Netelligent 1008/1009 10Base-T Unmanaged Repeaters User Guide
U
Uplink port 1-1
Uplink switch 2-10
UTP
cabling 1-1
connector 1-1
connectors
A-1
port 1-5
wire requirements 2-6
W
Watts (power consumption)
A-2
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