Installation Guide for
the Model FE508 and
Model FE516 Fast
Ethernet Hubs
NETGEAR, Inc.
A Bay Networks Company
48105 Warm Springs Blvd.
Fremont, CA 94539 USA
June 1996
Document Number M-FE500NA-0
© 1996 by Bay Networks, Inc. All rights reserved.
Trademarks
NETGEAR and Bay Networks are trademarks of Bay Networks, Inc.
Other brand and product names are registered trademarks or trademarks of their respective holders.
Statement of Conditions
In the interest of improving internal design, operational function, and/or reliability, NETGEAR, Inc. reserves the right to
make changes to the products described in this document without notice.
NETGEAR, Inc. does not assume any liability that may occur due to the use or application of the product(s) or circuit
layout(s) described herein.
Federal Communications Commission (FCC) Statement
Note: 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. If it is not installed and used in accordance with the instruction manual, it may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case
users will be required to take whatever measures may be necessary to correct the interference at their own expense.
EN 55 022 Declaration of Conformance
This is to certify that the NETGEAR Model FE508 and Model FE516 Fast Ethernet Hubs are shielded against the
generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a.
Conformity is declared by the application of EN 55 022:1987 Class A (CISPR 22:1985/BS 6527:1988).
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 appropriate measures.
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das NETGEAR Model FE508 and Model FE516 Fast Ethernet Hubs gemäß der im BMPTAmtsblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger
Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der
Betriebsanleitung.
Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt
gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.
Certificate of the Manufacturer/Importer
It is hereby certified that the NETGEAR Model FE508 and Model FE516 Fast Ethernet Hubs have been suppressed in
accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some
equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain
restrictions. Please refer to the notes in the operating instructions.
Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and
has been granted the right to test the series for compliance with the regulations.
ii
Voluntary Control Council for Interference (VCCI) Statement
Voluntary Control Council for Interference (VCCI) Statement
This equipment is in the 1st 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 that are aimed at preventing radio interference in commercial and/or industrial areas.
Consequently, when this equipment is used in a residential area or in an adjacent area thereto, radio interference may be
caused to equipment such as radios and TV receivers.
Customer Support
For assistance with installing and configuring your NETGEAR systems or with post-installation questions or problems,
contact your point of purchase representative.
To contact customer support or to purchase additional copies of this document or publications for other NETGEAR
products, you can contact NETGEAR at the following numbers:
• Phone:
− U.S./Canada: 1-800-211-2069
− Japan: 0031-1-26133
− Germany: 0130-8-23776
• Fax:
− U.S./Canada: 510-498-2609
World Wide Web
NETGEAR maintains a World Wide Web Home Page that you can access at the universal resource locator (URL)
http://NETGEAR.baynetworks.com/home. A direct connection to the Internet and a Web Browser such as Mosaic or
Netscape are required.
iii
Contents
Chapter 1 Introduction
Features .......................................................................................................................................... 1-2
Chapter 2 Physical Description
Front Panel ..................................................................................................................................... 2-1
LED Display ................................................................................................ ............................. 2-2
RJ-45 100BASE-TX Ports......................................................................................................... 2-3
Normal/Uplink Push Button ...................................................................................................... 2-4
Rear Panel....................................................................................................................................... 2-5
Cascade Connectors................................................................ ................................................... 2-6
Terminator LED........................................................................................................................ 2-7
Fan Outlets................................................................................................................................ 2-7
Power Receptacle ...................................................................................................................... 2-7
Chapter 3 Installation
Site Preparation............................................................................................................................... 3-1
Package Contents............................................................................................................................ 3-2
Required Tools and Materials.......................................................................................................... 3-2
Installing a NETGEAR 100BASE-T Hub ................................................................ ....................... 3-2
Installing the Hub on a Flat Surface........................................................................................... 3-3
Installing the Hub in a Rack....................................................................................................... 3-4
Installing Multiple Hubs ................................................................................................................. 3-6
Stacking and Cascading Hubs.................................................................................................... 3-6
Installing and Connecting Multiple Hubs................................................................................... 3-6
Verifying Your Installation ............................................................................................................. 3-9
Chapter 4 Troubleshooting
Verifying the LED Conditions ........................................................................................................ 4-1
Troubleshooting the Hub and Network............................................................................................ 4-1
Chapter 5 Network Configuration Examples
Ethernet Technology....................................................................................................................... 5-1
Configuration Examples.................................................................................................................. 5-2
100BASE-TX Shared Repeater.................................................................................................. 5-2
Building Small Organizations or Remote Offices....................................................................... 5-3
Migrating to 100 Mbps Operation ........................................................................................ 5-3
Multiport Switch with Fast Ethernet Backbone..................................................................... 5-5
Contents v
Appendix A Technical Specifications
General Specifications.................................................................................................................... A-1
Appendix B Connector Pin Assignments
RJ-45 Connector............................................................................................................................. B-1
Appendix C Fast Ethernet and Cabling Guidelines
Fast Ethernet................................................................................................................................... C-1
Fast Ethernet Cabling................................................................ ......................................................C-1
Cable Guidelines .......................................................................................................................C-2
Cable Lengths............................................................................................................................C-2
Cable Specifications................................................................................................ ..................C-3
Twisted-pair Cables................................................................................................................... C-4
Patch Panels and Cables ............................................................................................................ C-5
RJ-45 Connector................................................................................................ ........................C-5
Near End Crosstalk (NEXT) Loss.............................................................................................. C-5
Index
vi Contents
Chapter 1 Introduction
Congratulations on your purchase of the NETGEAR™ Model FE508 8-port Fast Ethernet Hub or the
Model FE516 16-port Fast Ethernet Hub. These hubs are part of the NETGEAR 500 Series product
family, designed to efficiently handle the needs of your 10 and 100 megabits per second (Mbps)
network today, and expand to handle your increasing networking needs in the future. Both hubs are
IEEE 802.3u-based Class I shared repeaters that provide you with a low-cost, high-performance
scalable network solution and are designed to support power workgroups operating at 100 Mbps.
Users who are operating network intensive applications on powerful workstations require more
bandwidth than the conventional 10BASE-T network. By migrating users who require more
bandwidth to devices that operate at 100 Mbps, you can increase the bandwidth and improve response
times. By installing the Model FE508 or Model FE516 hub in your network, you can create a power
workgroup with many users who can share access to centralized network devices (such as servers and
printers) that are operating at 100 Mbps.
This guide describes how to install and use the hub and includes physical configuration guidelines for
stacking hubs, connecting Ethernet stations, and making network connections.
This guide is intended for individuals who have the following background and experience:
• Working knowledge of basic Ethernet
• Familiarity with the differences between the 10BASE-T and 100BASE-T specifications
Introduction 1-1
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
Features
The Model FE508 and Model FE516 hubs have the following key features:
• IEEE 802.3u standard compliant for interoperation with all 100BASE-TX Fast Ethernet
(100 Mbps) products.
• Stackable architecture allows starting with as few as 8 ports and growing the network as required
by stacking up to four hubs for a total of 64 ports.
• Easy Plug-and-Play installation with no software to configure saves time and minimizes the
potential for configuration errors.
• Stackable chassis equipped with:
− 8 or 16 fast 100BASE-TX ports to provide fast information exchange, resource sharing, and
client or peer-to-peer communication using simple Category 5 UTP wiring.
− Built-in LEDs to clearly indicate individual port status.
− Additional LEDs to provide network traffic status for the hub.
− Normal/Uplink push button for simplifying network extension. In the Uplink mode, signals
are crossed to allow a straight-through cable to be used on one of the 100BASE-T ports (Port
8 on the Model FE508 hub and Port 16 on the Model FE516 hub) for connection to a
100BASE-T switch or router.
• Compact design enables tabletop or rack-mounting installation.
1-2 Introduction
Chapter 2 Physical Description
The Model FE508 and Model FE516 hub components are enclosed in a 13-inch (33.0 cm) wide by
8-inch (20.3 cm) deep chassis, which is 1.0 EIA rack-mount spaces high. The chassis consists of a
sturdy metal frame with a steel cover and an acrylic front panel overlay.
The discussion of the physical components of the hub is divided into the front panel components and
the rear panel components. Use the key at the bottom of each illustration to determine the associated
component.
Front Panel
The front panel contains the LEDs, RJ-45 100BASE-TX port connectors, and the Normal/Uplink push
button. Figure 2-1 shows the front panel of the Model FE508 hub and Figure 2-2 shows the front
panel of the Model FE516 hub.
1 = LEDs (Power, Data, and Collision)
2 = RJ-45 ports with Link and RX LEDs on each port
3 = Normal/Uplink push button
Figure 2-1. Front panel of the Model FE508 Fast Ethernet hub
Physical Description 2-1
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
1 = LEDs (Power, Data, and Collision)
2 = RJ-45 ports with Link and RX LEDs on each port
3 = Normal/Uplink push button
Figure 2-2. Front panel of the Model FE516 Fast Ethernet hub
LED Display
There are three LEDs on the front panel of the hub and two on each port connector that allow you to
identify:
• Status of the hub AC power supply
• Operational status of the hub
• Collision occurrence on an Ethernet segment in a standalone hub or a stack of hubs
• Data utilization of the Ethernet segment in a standalone hub or a stack of hubs
• Link and RX (receive activity) status for all ports in the hub
2-2 Physical Description
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
Table 2-1 describes each LED on the front panel of the hub.
Table 2-1. LED descriptions
Type Label State Description
Power indicator Power On Power is supplied to the hub.
Data Data On Data is being received and transmitted to/from the hub.
Collision indicator Collision Blinking There is data collision on the network.
Link * Link On
Off
Receive * RX Blinking There is incoming data on the port.
* Link and RX LEDs are located at the top corners of each RJ-45 port connection.
A link is established successfully between the hub and
the PC or workstation.
No data link and/or the cable is not connected.
RJ-45 100BASE-TX Ports
The front panel of the Model FE508 hub provides 8 RJ-45 100BASE-TX ports and the Model FE516
provides 16 RJ-45 100BASE-TX ports. These standard RJ-45 connectors accept 2-pair or 4-pair
Category 5 unshielded twisted-pair (UTP) copper wiring (100BASE-TX networks require only
2-pair). The RJ-45 interface is an 8-pin connector.
CAUTION: 100 Mbps operation requires the use of Category 5 UTP wiring with
100 Mbps certified connectors. Refer to Appendix C, “Fast Ethernet and Cabling
Guidelines,” for more information on cabling.
An illustration of the RJ-45 connector and a table of pin assignments are in Appendix B, “Connector
Pin Assignments.” Table B-1 provides the pin out information for the Normal (MDI-X) RJ-45
connector and the Uplink (MDI) RJ-45 connector.
Two LEDs are positioned at the top corners of each RJ-45 connector. The left indicator is the Link
LED and the right indicator is the RX (receive) LED. Both LEDs are described in Table 2-1.
Physical Description 2-3
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
Normal/Uplink Push Button
The Normal/Uplink push button (see Figure 2-3) on the front panel of the hub allows you to select
Uplink (MDI-X) or Normal (MDI) wiring for Port 8 on the Model FE508 hub and Port 16 on the
Model FE516 hub. Ports 8 and 16 are configured for Normal wiring when the push button is in the out
position. When the push button is pressed in, Ports 8 and 16 are configured for Uplink wiring.
Figure 2-3. Normal/Uplink push button
The Normal/Uplink push button eliminates the need to use a cross-over cable if you are connecting
the same type of devices. Use the following guidelines to configure Ports 8 and 16 for Uplink or
Normal wiring:
• Configure Ports 8 and 16 for Normal wiring if the remote end of the cable is connected to an
Uplink-wired device (such as a network station or a router).
• Configure Ports 8 and 16 for Uplink wiring if the remote end of the cable is connected to a
Normal device, such as a 10/100 Mbps switch.
The remaining (Normal) ports on the hubs cannot be configured for Uplink wiring. If you are using
one of these ports to connect to another Normal port, you must use an RJ-45 cross-over cable to
connect the two ports (refer to Appendix C, “Fast Ethernet and Cabling Guidelines,” for information
on the cross-over and straight-through cables).
2-4 Physical Description
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
Rear Panel
The rear panel of the hub provides two cascade cable connectors, a Terminator LED, two cooling
fans, and an AC power receptacle (see Figure 2-4).
1 = Cascade Up and Cascade Down connectors
2 = Terminator LED
3 = Fan assemblies
4 = AC power receptacle
Figure 2-4. Rear panel of either the Model FE508 or Model 516 hub
Physical Description 2-5
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
Cascade Connectors
The Model FE508 and Model FE516 Fast Ethernet hubs can be stacked for a maximum of 64
(100 Mbps) ports in a single repeater or collision domain. The stack of four hubs can consist of any
combination of Model FE508 and Model FE516 hubs daisy-chained together using a NETGEARsupplied cascade cable. The cascade cable daisy chains between the Cascade Down and Cascade Up
connectors (see Figure 2-5) on the rear panel of each hub. This connection creates a cascade bus that
carries information to each hub in the stack. Refer to “Installing and Connecting Multiple Hubs” in
Chapter 3, “Installation,” for a step-by-step procedure.
Figure 2-5. Cascade cabling two hubs
2-6 Physical Description
Installation Guide for the Model FE508 and FE516 Fast Ethernet Hubs
Terminator LED
The Terminator LED, located on the rear panel of the hub, indicates that the built-in terminator in that
hub is active. When two or more hubs are cascaded together in a stack, the Terminator LED on the
top-most hub and the LED on the bottom-most hub should be lit to indicate that the terminator is
active in those hubs. The Terminator LED on the center hubs should not be lit. Use Table 2-2 to
determine which hubs in a stack should have the terminator active (LED on).
Table 2-2. Terminator LED status in a stack of hubs
Number of hubs Terminator LED
1 Lit
2 Both LEDs lit
3 or more Top and bottom LEDs lit, middle
LEDs off
Fan Outlets
Two fans cool the hub. Do not block the fan outlets, located on the rear panel, when installing in a
rack or on a tabletop or other flat surface.
Power Receptacle
The AC power receptacle is provided for connection to the AC power outlet. The hub accepts between
100 and 240 V AC, 50/60 Hz.
Physical Description 2-7
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