D-Link DES-1026G Manuel utilisateur

D-Link DES-1026G

24-Port 10/100 + 2-Port 10/100/1000Mbps

Gigabit Ethernet Switch

Manual

Second Edition

Building Networks for People

Table of Contents

1. Package Contents.............................3

2. Introduction ......................................3

3. Installation........................................8

4. Technical Specifications ................11

5. Contacting Technical Support........12

6. Warranty ............................................13

P/N:1907E7224TA6002

1. Package Contents

 One DES-1026G 24-Port 10/100Mbps + 2-Port

10/100/1000Mbps Gigabit Ethernet Switch

 One AC power cord

 Four rubber feet to be used for shock cushioning

 Screws and two mounting brackets

 Manual

If any of the above items are missing, please contact your reseller.

2. Introduction

Congratulations on your purchase of the DES-1026G 24-Port

10/100Mbps + 2-Port 10/100/1000Mbps Gigabit Ethernet Switch. This

device integrates 1000Mbps Gigabit Ethernet, 100Mbps Fast Ethernet,

and 10Mbps Ethernet network capabilities into one cost-effective solution.

This manual discusses how to install your DES-1026G 24-Port

10/100Mbps + 2-Port 10/100/1000Mbps Gigabit Ethernet Switch.

In this manual, the term “Switch” (first letter upper case) refers to your

DES-1026G 24-Port 10/100Mbps + 2-Port 10/100/1000Mbps Gigabit

Ethernet Switch, and “switch” (first letter lower case) refers to other

Ethernet switches.

This chapter describes the features of the Switch and some background

information about Ethernet/ Fast Ethernet/ Gigabit Ethernet switching

technology.

Fast Ethernet Technology

Ethernet, along with its speedier counterpart Fast Ethernet, is the most

popular networking standard in use today. 100BaseT Fast Ethernet is an

extension of the 10BaseT Ethernet standard, designed to raise the data

transmission capacity of 10BaseT from 10Mbits/sec to 100Mbits/sec. An

important technology incorporated by 100BaseT is its use of the Carrier

Sense Multiple Access with Collision Detection (CSMA/CD) protocol -

which is the same protocol that 10BaseT uses - because of its ability to

work with several different types of cable, including basic twisted-pair

wiring. Both of these features play an important role in network

considerations, and they make 100BaseT an attractive migration path for

those networks based on 10BaseT. 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 an 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 the 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 Fast 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 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 existing 10Mbps networks and new

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.

Features and Benefits

 (24) 10/100BASE-TX Fast Ethernet ports + (2) 1000BASE-T

Gigabit Ethernet ports

 Auto MDI/MDI-X support on each port

 Full/half duplex transfer mode for 10/100Mbps Fast Ethernet

transmission

 Full duplex transfer mode for Gigabit Ethernet transmission

 Wire-speed reception and transmission

 Store-and-Forward switching method

 Integrated address Look-Up Engine, supports 8K MAC

addresses

 Supports 512K bytes RAM for data buffering

 Extensive front-panel diagnostic LEDs

 Broadcast storm protection

 IEEE 802.3x flow control for full-duplex

 Back pressure flow control for half-duplex

 Standard 19” Rack-mount size

LEDs

LED stands for Light-Emitting Diode.

The front panel LEDs provides instant status feedback and simplifies monitoring and

troubleshooting tasks.

LED indicators of the Switch

 POWER

On When the Power LED light is on, the Switch is receiving

power.

Off When the Power LED light is off , the power cord is

improperly connected.

Ports 1-24 Status LEDs

 LINK/ACT

On When the LED light is on, the respective port is connected to the

10/100Mbps Ethernet network.

Blinking When the LED light is blinking, the port is transmitting or receiving

data on the 10/100Mbps Ethernet network.

Off No link.

 100Mbps

On When the LED light is on, the respective port is connected

to a 100Mbps Ethernet network.

Off When the LED light is off, the respective port is connected

to a 10Mbps Ethernet network, or no link.

Ports 25 & 26 Status LEDs

 LINK/ACT

On When the LED lights on, the respective port is connected to

a 10/100/1000Mbps Ethernet network.

Blinking When the LED is blinking, the respective port is

transferring or receiving data on a 10/100/1000Mbps

Ethernet network.

Off No link.

 1000Mbps

On When the LED lights on, the respective port is connected to

a Gigabit Ethernet network.

Off The respective port is connected to a 10/100Mbps Ethernet

network, or no link.

 100Mbps

On When the LED lights on, the respective port is connected to

a 100Mbps Fast Ethernet network.

Off When the LED light is off, the respective port is connected

to a 10Mbps or Gigabit Ethernet network or there is no

link.

┌─

Connections

Front Panel

10/100 Base-TX Twisted-Pair Ports

└──────┘ └───┘

LED Indicators 1000 Base-T

Twisted-Pair Ports

 10/100BASE-TX Twisted-Pair Ports (Port1~24)

These ports support network speeds of either 10Mbps or

100Mbps, and can operate in half- and full- duplex transfer

modes. These ports also support automatic MDI/MDI-X

crossover detection, giving true “plug and play” capability. Just

plug the network cable directly into the hub; you can use either

straight-through or crossover cable.

 1000BASE-T Twisted Pair Ports (Port 25~26)

The DES-1026G is equipped with two Gigabit twisted pair ports

that are auto negotiable 10/100/1000Mbps and also support auto

MDI/MDIX crossover detection. These two ports can operate in

half- and full- duplex modes.

Rear Panel

 AC Power Connector

This is a three-pronged connector that supports the power cord.

Plug in the female connector of the provided power cord into this

connector, and the male into a power outlet. Supported input

voltages range from 100~240V AC at 50~60Hz.

3. Installation

The site where you place the DES-1026G may greatly affect its

performance. When installing, take the following into your consideration:

 Install the DES-1026G in a fairly cool and dry place. See

Technical Specifications for the acceptable temperature and

humidity operating ranges.

 Install the DES-1026G in a site free from strong electromagnetic

field generators (such as motors), vibration, dust, and direct

exposure to sunlight.

 Leave at least 10cm (about 4 inches) of space at the front and

rear of the hub for ventilation.

 Install the DES-1026G on a sturdy, level surface that can

support its weight, or in an EIA standard-size equipment rack.

 When installing the Switch on a level surface, attach the rubber

feet to the bottom of each device. The rubber feet cushion the

hub and protects the hub case from scratching.

Attach the adhesive rubber pads to the bottom

Rack Mounting

The DES-1026G can be mounted in an EIA standard-size, 19-inch rack,

which can be placed in a wiring closet with other equipments. Attach the

mounting brackets to both sides of the Switch (one at each side), and

secure them with the provided screws.

Use the screws provided. Then, use screws provided with the equipment rack to

mount the Switch in the rack.

Mount the Switch in the rack

Connecting Network Cable

The DES-1026G supports 10/100/1000Mbps Gigabit Ethernet. It runs

full/half duplex transfer mode for 10/100Mbps and full duplex transfer

mode for 1000Mbps. Each port on the DES-1026G supports Auto-

MDI/MDI-X. Auto-MDI/MDI-X is a feature that eliminates the need for

worrying about using either a standard or crossover cable—you can use

either one—and allows any port to be an uplink port.

AC Power

The DES-1026G can be used with AC power supply 100~240V AC,

50~60 Hz. The power switch is located at the rear of the unit adjacent to

the AC power connector and the system fan. The switch’s power supply

will adjust to the local power source automatically and may be turned on

without having any or all LAN segment cables connected.

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