D-Link DSS-8+ Manuale utente

D-Link DSS-8+

8-port 10/100 Ethernet Switch

Manual

Rev. 12224

Building Networks for People

Ver.1.01

TABLE OF CONTENTS

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

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

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

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

SWITCHING TECHNOLOGY......................................................... 2

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

UNPACKING AND SETUP....................................................... 6

UNPACKING.............................................................................. 6

SETUP...................................................................................... 6

IDENTIFYING EXTERNAL COMPONENTS ............................ 7

FRONT PANEL .......................................................................... 7

LED INDICATORS ..................................................................... 7

REAR PANEL ............................................................................ 8

CONNECTING THE SWITCH................................................... 9

COMPUTER TO DSS-8+......................................................... 9

HUB TO DSS-8+....................................................................... 9

DSS-8+ TO OTHER DEVICES ..................................................... 9

PORT SPEED & DUPLEX MODE ............................................... 10

MOUNTING THE SWITCH ON A WALL................................ 11

TECHNICAL SPECIFICATIONS ............................................ 12

RJ-45 PIN SPECIFICATION................................................... 14

WARRANTY..................................... ...................................... 15

TECHNICAL SUPPORT ......................................................... 20

ABOUT THIS GUIDE

Congratulations on your purchase of the DSS-8+ Switch. This

device integrates 100Mbps Fast Ethernet and 10Mbps Ethernet

network capabilities into one high-performance, easy-to-use

solution.

Purpose

This manual will familiarize you with the DSS-8+ Switch and guide

you through the installation process.

Conventions

For simplicity, this documentation uses the term “Switch” (first letter

upper case) to refer to the DSS-8+ Ethernet Switch, and “switch”

(first letter lower case) to refer to other Ethernet switches.

INTRODUCTION

Fast Ethernet Technology

The growing importance of LANs and the increasing complexity of

desktop computing applications are fueling the need for high

performance networks. 100BASE-T (Fast Ethernet) provides a cost-

effective and high-performance solution for small workgroups,

SMBs (Small to Medium Businesses), and any network supporting

bandwidth-intensive applications. Fast Ethernet technology

operates at 10 times the speed of traditional Ethernet, offering

maximum performance and enhanced capability for existing

Ethernet-based networks.

100Mbps Fast Ethernet is a 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 path and takes

advantage of the existing investment in hardware, software, and

personnel training.

Switching Technology

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

capacity available to users on a LAN. If an Ethernet network begins

to display symptoms of congestion, low throughput, slow response

times, and high rates of collision, installing a switch to a network

can preserve much or all of the existing network's cabling and

workstation interface card infrastructure, while still greatly

enhancing the throughput for users. A switch is a viable solution

even if demanding applications, such as multimedia production and

video conferencing, are on the horizon. The most promising

techniques, as well as the best return on investment, could well

consist of installing the right mixture of Ethernet switches.

A switch increases capacity and decreases network loading by

dividing a local area network into different LAN segments. Dividing

a LAN into multiple segments is one of the most common ways of

increasing available bandwidth. If segmented correctly, most

network traffic will remain within a single segment, enjoying the full-

line speed bandwidth of that segment.

Switches provide full-line speed and dedicated bandwidth for all

connections. This is in contrast to hubs, which use the traditional

shared networking topology, where the connected nodes contend

for the same network bandwidth. When two switching nodes are

communicating, they are connected with a dedicated channel

between them, so there is no contention for network bandwidth with

other nodes. As a result, the switch reduces considerably, the

likelihood of traffic congestion.

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

the problem 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 Ethernet

network beyond the 205-meter network diameter limit for 100BASE-

TX networks. Switches supporting both 10Mbps Ethernet and

100Mbps Fast Ethernet are also ideal for bridging between existing

10Mbps networks and newer 100Mbps networks.

Switching LAN technology is a marked improvement over the

previous generation of network hubs and 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 for most kinds of local area network

congestion problems.

Features

The DSS-8+ is a high performance switch designed specifically for

environments where traffic on the network and the number of users

increase continuously.

The DSS-8+, with its small, compact size, was specifically designed

for small to mid-sized workgroups. The DSS-8+ can be installed

where space is limited; moreover, it provides immediate access to a

rapidly growing network through a wide range of user-reliable

functions.

The DSS-8+ is ideal for deployment with multiple high-speed

servers for 10Mbps or 100Mbps shared-bandwidth workgroups.

With the highest bandwidth at 200Mbps (100Mbps full-duplex

mode), any port can provide workstations with a congestion-free

data pipe for simultaneous access to the server.

The DSS-8+ is scalable, allowing two or more DSS-8+s to be

cascaded together. Since all ports support 200Mbps, any one of its

eight ports may be used to cascade to an additional switch to open

a Full-Duplex Fast Ethernet pipe.

The DSS-8+ is the perfect choice for a department or office

planning to upgrade to Fast Ethernet. The DSS-8+ can

accommodate 10Mbps or 100Mbps devices, providing a flexible

solution for existing (10Mbps) Ethernet workgroups.

The DSS-8+ combines dynamic memory allocation with store-and-

forward switching to ensure that the buffer is effectively allocated

for each port; and it controls the data flow between the transmit and

receive nodes to guarantee against possible packet loss.

The DSS-8+ is an unmanaged 10/100Mbps Fast Ethernet switch

that offers solutions for the accelerating bandwidth needs of small

Ethernet workgroups.

Other key features include:

 Store-and-forward switching scheme capability. As the result of

complete frame checking and error frame filtering, this scheme

prevents error packages from transmitting among segments.

 Auto-MDI/MDI-X. Detects the type of cable you are using,

Crossover or Straight-Through, and automatically adjusts per

port, allowing you to also use any port as an uplink port—the

choice is yours. No more worries about whether you are using

the right cable type or not. Auto MDI/MDI-X cable-type

detection gives you true ‘plug and play’ capability.

 Nway Auto-negotiation for any port. This allows for auto-

sensing of speed (10/100Mbps) and duplex mode

(10/20/100/200Mbps), providing an automatic and flexible

solution for the network.

 Flow control for any port. This minimizes dropped packets by

sending out collision signals when the port’s receiving buffer is

full. Note that flow control is only available in half duplex mode.

 Data filtering rate eliminates all error packets, runts, etc., per

port at wire-speed for 100Mbps operation and 10Mbps

operation.

UNPACKING AND SETUP

Unpacking

Open the box and carefully unpack it. The box should contain the

following items:

1. One DSS-8+ 8-port 10/100Mbps Ethernet Switch

2. One External Power Adapter

3. Four Rubber Feet

4. Nylon screw anchors and T3 x 15L screws

5. This Manual

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

for a replacement.

Setup

The setup of the DSS-8+ can be performed using the following

steps:

 The power outlet should be within 1.82 meters (6 feet) of the

Switch.

 Visually inspect the DC power jack and make sure that it is fully

secured to the power adapter.

 Do not cover the ventilation holes on the sides of the Switch,

and make sure there is adequate ventilation around it.

 Do not place heavy objects on the switch.

IDENTIFYING EXTERNAL COMPONENTS

Front Panel

The figure below shows the front panel of the DSS-8+.

Front Panel LED Indicators

LED Indicators

 Power Indicator

This green indicator light is on when the DSS-8+ is receiving

power; otherwise, it is off.

 Full-Duplex/Collision Indicator (Full Duplex/Collision)

This green indicator light is on when the port is in full-duplex

(FDX) mode. Otherwise, it blinks as collisions occur on any

port of the Switch.

 100Mbps Link/Activity, 10Mbps Link/Activity Indicator

(100 Link/Act (green), 10 Link/Act (amber))

This LED indicator light is green when the port is connected to

a 100Mbps Fast Ethernet station. The green indicator blinks

as Fast Ethernet data is transmitted or received. The indicator

light is amber when the port is connected to a 10Mbps Ethernet

station, or other network device. The amber indicator blinks as

Ethernet data is transmitted or received.

Rear Panel

DSS-8+ 10/100Mbps Fast Ethernet Switch

Auto MDI/MDI-X Ports:

All ports support automatic MDI/MDI-X cable-type detection, which

eliminates the issue of choosing the right cable (Crossover or

Straight-Through). The Auto MDI/MDI-X function makes it simple to

connect to the Switch using either a Crossover or Straight-Through

CAT5 cable into any port—the choice is yours.

DC Power Jack:

Power is supplied through an external DC power adapter. Check

the technical specification section for information about the DC

power input voltage.

Since the DSS-8+ does not include a power button, plugging its

power adapter into a power outlet will immediately power it on.

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