Planet DHR-800, DHR-800P User Manual

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NOVA100 Series

DHR-800

DHR-800P

19" Modular/ Expandable

Dual-Speed Stackable Hub

NOVA100 Series

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Trademarks

Copyright  PLANET Technology Corp. 1998.
Contents subject to revision without prior notice.
PLANET is a registered trademark of PLANET Technology Corp. The
information in this manual is subject to change without notice. All
other trademarks belong to their respective owners.

FCC Warning

This equipment generates and uses radio frequency energy. If it
is not installed and used properly in strict accordance with the
manufacturer‘ s instructions, it may cause interference to radio
and television reception. It has been type-tested and found to
comply the specifications in sub-part J of Part 15 of FCC Rules,
which are designed to provide reasonable protection against
such interference in a residential installation. There is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause interference to radio or
television reception which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Re-orient the receiving antenna

• Relocate the computing device with respect to the receiver

• Move the computer away from the deceiver

• Plug the computer into a different outlet so that computer

and receiver are on different electrical circuits.
If necessary the user should consult the dealer or an experienced
radio or television technician for additional suggestions.

Revision

The information in this manual is subject to change without
notice.
User's manual for PLANET Nova 100 Series,

For models: DHR-800/DHR-800P.
Rev 1.20 (Jul. 1998)
Part NO. EMHDHR800v2

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Table of Contents

1. INTRODUCTION....................................................................1

ABOUT THIS GUIDE..................................................................... 1

CHECKLIST.................................................................................1

PRODUCT FEATURES ................................................................... 2

ABOUT FAST ETHERNET ..............................................................2

2. INSTALLATION......................................................................5

HARDWARE DESCRIPTION............................................................5

• LED Indication ...................................................................6

• Rear Panel ......................................................................... 7

HARDWARE INSTALLATION..........................................................8

• General Rules..................................................................... 8

• Connecting End Nodes .......................................................9

• Stacking two Hubs............................................................11

• Connecting the Hub to Another Hub by Uplink port .........11

• Installing the modules into the Hub .................................. 11

• Connecting the Hub to AC Power.....................................12

HARDWARE TROUBLESHOOTING................................................12

APPENDIX A SPECIFICATIONS............................................ 15

APPENDIX B RJ-45 PIN ASSIGNMENTS...............................16

STRAIGHT-THROUGH / CROSSOVER CABLE.........................16

NOVA100 Series

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1

DHR-800/DHR-800P User’s Manual

1.

Introduction

About This Guide

Thank you for purchasing PLANET NOVA100 10/100Mbps Dual
Speed Ethernet Hub – DHR-800/DHR-800P. Compact in size and
lightweight, utilizing the latest VLSI technology to provide high
reliability levels, the units provide a flexible approach to hub
deployment.

In this user's guide, you will learn product characteristics, it's
features, and also some basic installation concepts. Please read the
following section carefully before your installation.

Checklist

Carefully unpack the package and check its contents against the checklist
given below.

• 10/100BASE-TX Dual-Speed Ethernet hub:

Primary Model – DHR-800P
Secondary Model – DHR-800

• User‘s manual

• Power Cord

• Accessories

Please inform your dealer immediately for any wrong, missing, or damaged
part if possible, retain the carton including the original packing materials,
and use them against to repack the product in case there is a need to return
it to us for repair.

NOVA100 Series

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Product Features

1. DHR-800P/DHR-800 is a 8-port modularized 19" Rack mount
10/100Mbps Dual Speed Ethernet Stackable Hub, complies with the
IEEE802.3 10Base-T and IEEE802.3u 100Base-TX Class II
standard.

2. DHR-800P and DHR-800 are the same product series and can stack
with each other.

• DHR-800P is the 8-port Dual-Speed Ethernet Hub with internal

switching module – called “Primary Hub”

• DHR-800 is the 8-port Dual-Speed Ethernet Hub without

switching module – called “Secondary Hub”

3. At rear panel, provide two stacking ports for stacking up to 3 units
max. This type of connection has no sacrifice ports.

4. DHR-800P provides switching function to bridge between the
10Base-T segment and 100Base-TX segment.

5. DHR-800 provide two speed auto-negotiation, but 10Base-T and
100Base-TX segments can not communicate with each other, except
by stacking with DHR-800P primary model.

6. At the front panel, one additional RJ-45 Uplink port can be
cascaded to a hub by using straight-through cable.

7. Two Expansion Slots for multiple purpose networking, network
expansion and extension

8. LED indicators array for simple diagnostics and management

About Fast Ethernet

This hub is technically known as a 100Base-TX Class II Fast
Ethernet hub. This Section describes what this means in practical
terms.

•

Ethernet Standards and Operation Speeds

DHR-800/DHR-800P User's

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The standards of the Ethernet are defined by the Institute of
Electrical and Electronics Engineers (IEEE). The standard for
traditional Ethernet using hubs and twisted-pair cables is known as
10Base-T. Traditional Ethernet works at a signaling speed of
10Mbps, that is, ten megabits (slightly more than a character) per
second. The Base in 10Base-T stands for “baseband,” a one-bit-at­a-time signaling method; the T stands for twisted-pair cables.

Fast Ethernet was developed to meet the demand for increased
“bandwidth,” in other word, greater data-carrying capacity. A fast
Ethernet hub works at 100Mbps, ten times the speed of a 10Base-T
hub.

The IEEE had defined several Fast Ethernet Standards. The hub complies
with the 100Base-TX standard: 100Mbps baseband signaling on twisted­pair cables, with signals crossing from the Transmit lines to the Receive
lines somewhere between each pair of communication end nodes.

•

Fast Ethernet Hub Classes

This hub is a Class II Fast Ethernet hub. This means two things:

1.It will work with Fast Ethernet interface cards of one type only, and

2.It can be connected to another hub for the purpose of expanding the

network.

Note: A Class I hub will work with more than one type of Fast Ethernet

interface card, but cannot be connected to another hub.

•

100Base-TX Fast Ethernet Cabling

The twisted-pair cables used for traditional Ethernet and Fast Ethernet all
look the same on the outside. Such cables, however, come in different
grades and with different wire arrangement, and can have different kinds
of sheathing.