D-Link DES-105 Manuale utente

DES-105/108

5/8-Port 10/100Mbps

Unmanaged Switch

Manual

RECYCLABLE

V1.00

ABLE OF ONTENTST C

ABOUT T

UNPAC

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

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

TECHNICAL SPECIFICATIONS.................................................13

RJ-45 PIN SPECIFICATION .........................................................15

HIS GUIDE .......................................................................1

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

TRODUCTION ..............................................................................2

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

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

802.1P AND QOS................................................................................3

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

KING AND SETUP..............................................................6

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

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

ENTIFYING EXTERNAL COMPONENTS ..............................7

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

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

ONNECTING THE SWITCH........................................................9

PC TO DES-105/108...........................................................................9

HUB TO DES-105/108........................................................................9

DES-105/108 TO OTHER DEVICES......................................................9

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

ABOUT THIS GUIDE

Congratulations on your purchase of the D-Link DES-105/108. This

device integrates 100Mbps Fast Ethernet and 10Mbps Ethernet network

capabilities in one high-performance, easy-to-use solution.

Purpose

This manual will familiarize you with the DES-105/108 and guide you

through the installation process.

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 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.

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

to most kinds of local area network congestion problems.

802.1p and QoS

The DES-105/108 Switch supports 802.1p priority queuing Quality of

Service and both models provide 2 priority queues for users to prioritize

traffic.

Features

The DES-105/108 is a high performance switch designed specifically for

environments where traffic on the network and the number of users

increase continuously.

DES-105/108 implements D-Link’s Green Technology special power-

saving features under speed at 100Mbps that link status and adjust power

usage accordingly. Further, D-Link Green implements the newly ratified

IEEE 802.3az Energy Efficient Ethernet standard for reducing energy

consumption of network links during periods of low utilization by

transitioning interfaces into low-power state without interrupting the

network connection.

DES-105/108 has special front access design for Ethernet ports/LEDs to

help user easier to understand and control network status. Metal case

design is useful for strengthening cooling and suitable for departmental

environment, providing users the best performance. DES-105/108 was

specially designed for small to mid-size workgroups and can be installed

where space is limited.

The DES-105/108 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 DES-105/108 is scalable, allowing two or more DES-105/108 to be

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

ports may be used to cascade to an additional switch to open a Full-Duplex

Fast Ethernet pipe.

The DES-105/108 is the perfect choice for a department or office planning

to upgrade to Fast Ethernet. The DES-105/108 can accommodate 10Mbps

or 100Mbps devices, providing a flexible solution for existing (10Mbps)

Ethernet workgroups.

The DES-105/108 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 DES-105/108 is an unmanaged 10/100Mbps Fast Ethernet switch that

offers solutions for the accelerating bandwidth needs of small Ethernet

workgroups.

Other key features include:

Supports Auto-Negotiation for 10/100Mbps and duplex mode

Supports Auto-MDI/MDIX for each port

Supports Full/Half duplex transfer mode for 10 and 100Mbps

Back pressure flow control for half duplex

Full wire speed reception and transmission

Store-and-Forward switching method

Supports 8K absolute MAC addresses

Supports 128KBytes RAM for data buffering

IEEE 802.3x flow control for full duplex

IEEE 802.1p priority queues

UNPACKING AND SETUP

Unpacking

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

following items:

One DES-105/108: 5/8-Port 10/100Mbps Ethernet Switch

One External Power Adapter

Wall Mount Kit

Quick Installation Guide

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

replacement.

Setup

The setup of the DES-105/108 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 DES-105/108.

DES-105/108 10/100Mbps Fast Ethernet Switch

Power/LED:

This green indicator light is on when the DES-105/108 is receiving

power; otherwise, it is off.

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

100 Link/Act (green):

There are two LED indicators for each Ethernet port. The port LEDs

indicate a network link through the corresponding port. Blinking

indicates the Switch is either sending or receiving data to the port.

When the port LED glows in green, it indicates the port is running on

10M or 100M.

Auto MDI/MDI-X Ports:

All ports support automatic MDI/MDI-X crossover detection.

The AutoMDI/MDI-X function makes it simple to connect to the

switch—just plug either a Crossover or Straight-Through CAT5 cable

into any port.

Rear Panel

Kensington LockKensington Lock

Power Jack:

Power is supplied through an external power adapter. Check the

technical specification section for information about the power input

voltage.

Since the DES-105/108 does not require a power button, plugging

DES-105/108 10/100Mbps Fast Ethernet Switch

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

Kensington Security Slot

DES-105/108 has been giving customers the best option for physical

security through a Kensington Security Slot in the rear panel. The

Kensington Security Slot adds value to DES-105/108 by offering

customers a simple, built-in security solution.

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