D-Link DSS-16+ Manuale utente

D-Link DSS-16+

16-port 10/100 Ethernet Switch

Manual

Rev. 072104

Building Networks for People

Ver.1.00

TABLE OF CONTENTS

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

PURPOSE.............................................................................1

TERMS/USAGE....................................................................1

OVERVIEW OF THIS USER’S GUIDE ....................................1

INTRODUCTION .......................................................................2

FAST ETHERNET TECHNOLOGY..........................................2

SWITCHING TECHNOLOGY .................................................3

FEATURES...........................................................................4

UNPACKING AND SETUP.......................................................5

UNPACKING........................................................................5

SETUP .................................................................................5

DESKTOP INSTALLATION....................................................6

RACK MOUNTING...............................................................6

IDENTIFYING EXTERNAL COMPONENTS........................8

TECHNICAL SPECIFICATION ............................................10

WARRANTY..............................................................................12

ABOUT THIS GUIDE

Congratulations on your purchase of the DSS-16+ 16-port

10/100Mbps Auto-negotiation Fast Ethernet Switch. This device

integrates 100Mbps Fast Ethernet and 10Mbps Ethernet network

capabilities in a highly flexible package.

Purpose

This guide discusses how to install your DSS-16+.

Terms/Usage

In this guide, the term “Switch” (first letter upper case) refers to DSS-16+

16-port 10/100Mbps Fast Ethernet Switch, and “switch” (first letter lower

case) refers to other Ethernet switches.

Overview of this User’s Guide

Introduction. Describes the Switch and its features.

Unpacking and Installation.Helps you get started with the basic installation

of the Switch.

Identifying External Components. Describes the front panel, rear panel and

LED indicators of the Switch.

Technical Specifications. Lists the technical (general, physical and

environmental, and performance) specifications of the Switch.

INTRODUCTION

This chapter describes the features of the DSS-16+ and some background

information about Ethernet/Fast Ethernet switching technology.

Fast Ethernet Technology

The growing importance of LANs and the increasing complexity of desktop

computing applications are fueling the need for high performance networks.

A number of high-speed LAN technologies have been proposed to provide

greater bandwidth and improve client/server response times. Among them,

100BASE-T (Fast Ethernet) provides a non-disruptive, smooth evolution

from the current 10BASE-T technology. The non-disruptive and smooth

evolution nature, and the dominating potential market base, virtually

guarantee cost-effective and high-performance Fast Ethernet solutions in the

years to come.

100Mbps Fast Ethernet is a new standard specified by the IEEE 802.3 LAN

committee. It is an extension of the 10Mbps Ethernet standard with the

ability to transmit and receive data at 100Mbps, while maintaining the

CSMA/CD Ethernet protocol. Since the 100Mbps Fast Ethernet is compatible

with all other 10Mbps Ethernet environments, it provides a straightforward

upgrade and takes advantage of the existing investment in hardware,

software, and personnel training.

Switching Technology

Another approach to pushing beyond the limits of Ethernet technology is the

development of switching technology. A switch bridges Ethernet packets at

the MAC address level of the Ethernet protocol, transmitting among

connected Ethernet or Fast Ethernet LAN segments.

Switching is a cost-effective way of increasing the total network capacity

available to users on a local area network. A switch increases capacity and

decreases network loading by dividing a local area network into different

segments, which don’t compete with each other for network transmission

capacity.

The switch acts as a high-speed selective bridge between the individual

segments. The switch, without interfering with any other segments,

automatically forwards traffic that needs to go from one segment to another.

By doing this the total network capacity is multiplied, while still maintaining

the same network cabling and adapter cards.

For Fast Ethernet networks, a switch is an effective way of eliminating

problems of chaining hubs beyond the “two-repeater limit.” A switch can be

used to split parts of the network into different collision domains, making it

possible to expand your Fast Ethernet network beyond the 205-meter network

diameter limit for 100BASE-TX networks. Switches supporting both

traditional 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for

bridging between the existing 10Mbps networks and the new 100Mbps

networks.

Switching LAN technology is a marked improvement over the previous

generation of network bridges, which were characterized by higher latencies.

Routers have also been used to segment local area networks, but the cost of a

router, the setup and maintenance required make routers relatively

impractical. Today switches are an ideal solution to most kinds of local area

network congestion problems.

Features

The DSS-16+ is designed for easy installation and high performance in an

environment where traffic on the network and the number of users increase

continuously.

 16-port 10/100BASE Ethernet Switch with RJ-45 connectors

 Supports Auto-negotiation of speed and duplex modes for each port

 Supports Auto-MDI/MDI-X for each port

 Wire speed reception and transmission

 Store-and-Forward switching method

 Integrated address Look-Up Engine, supports 8K absolute MAC

addresses

 Supports 4MBits RAM for data buffering

 Front-panel diagnostic LEDs

 Broadcast storm protection

 IEEE 802.3x flow control for full-duplex

 Back pressure flow control for half-duplex

UNPACKING AND SETUP

This chapter provides unpacking and setup information for the DSS-16+.

Unpacking

Open the shipping carton for the Switch and carefully unpack its contents.

The carton should contain the following items:

 One DSS-16+ 16-port 10/100Mbps Fast Ethernet Switch

 One AC power cord, suitable for your area’s electrical power

connections

 Four rubber feet to be used for shock cushioning

 Screws and two mounting brackets

 This User’s Guide

If any item is found missing or damaged, please contact your local reseller

for replacement.

Setup

Please consider the following when setting up the Switch:

1. The surface must support at least 5 kg.

2. The power outlet should be within 1.42 meters (6 feet) of the device.

3. Visually inspect the power cord and see that it is secured fully to the AC

power connector.

4. Make sure that there is proper heat dissipation from and adequate

ventilation around the Switch. Do not place heavy objects on the Switch.

Desktop Installation

When installing the Switch on a desktop, the rubber feet

included with the device must be attached first. Attach these

cushioning feet on the bottom at each corner of the device.

Allow enough ventilation space between the device and the

objects around it.

Fast Ethernet Switch installed on a Desktop or Shelf

Rack Mounting

The DSS-16+ can be mounted in an EIA standard-size, 19-inch rack, which

can be placed in a wiring closet with other equipment. Attach the mounting

brackets at the switch’s front panel (one on each side), and secure them with

the provided screws.

Attaching the mounting brackets to the Switch

Then, use screws provided with the equipment rack to mount each switch in

the rack.

Installing the Switch in an equipment rack

IDENTIFYING EXTERNAL COMPONENTS

This section identifies all the major external components of the DSS-16+.

The figure below shows the front panels of the DSS-16+.

16-port 10/100Mbps Fast Ethernet Switch

1. LED Indicator Panel

Refer to the detailed information about each of the DSS-16+’s LED

indicators.

 Power

This indicator lights green when the switch is receiving power; otherwise, it

is off.

 Link / Act (Link/Activity)

This indicator lights on when the port is connected to a Fast Ethernet or

Ethernet device; if the light is blinking, it indicates that data is being

transmitted or received.

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