D-Link DGS-1248T User Guide

D-Link™

DGS-1248T

WebSmart 48-Port 10/100/1000Mbps + 4

Combo SFP(Mini GBIC) Gigabit Switch

Manual

First Edition

Building Networks for People

RECYCLABLE

Information in this document is subject to change without notice.

Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation is strictly forbidden.

Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Computer Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. D-Link Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

FCC W arning This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this user’s guide, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

CE Mark Warning

This is a Class A product. In a domestic environment, this product may cause radio interference in which case the user may be required to take adequate measures.

Warnung!

Dies ist ein Produkt der Klasse A. Im Wohnbereich kann dieses Produkt Funkstoerungen verursachen. In diesem Fall kann vom Benutzer verlangt werden, angemessene Massnahmen zu ergreifen.

Precaución! Este es un producto de Clase A. En un entorno doméstico, puede

causar interferencias de radio, en cuyo case, puede requerirse al usuario para que adopte las medidas adecuadas.

Attention! Ceci est un produit de classe A. Dans un environnement

domestique, ce produit pourrait causer des interférences radio, auquel cas l`utilisateur devrait prendre les mesures adéquates.

Attenzione!

Il presente prodotto appartiene alla classe A. Se utilizzato in ambiente domestico il prodotto può causare interferenze radio, nel cui caso è possibile che l`utente debba assumere provvedimenti adeguati.

VCCI W arning

iii

TABLE OF CONTENT

About This Manual ...............................................................................1

Purpose ............................................................................................ 1

Terms/Usage....................................................................................1

Introduction..........................................................................................2

Gigabit Ethernet Technology........................................................... 2

Fast Ethernet Technology................................................................ 3

Switching Technology .....................................................................3

VLAN (Virtual Local Area Network)..............................................4

Features............................................................................................4

Unpacking and Installation ..................................................................6

Unpacking........................................................................................6

Installation .......................................................................................6

Rack Mounting ................................................................................ 7

Connecting Network Cable.............................................................. 8

AC Power.........................................................................................8

Identifying External Components........................................................ 9

Front Panel.......................................................................................9

Rear Panel......................................................................................10

Understanding LED Indicators.......................................................... 11

Power and System LEDs ...............................................................11

Ports 1~48 Status LEDs.................................................................11

mini-GBIC Port 45F ~ 48F LEDs.................................................. 12

Configuration.....................................................................................13

Installing the Web Management Utility.........................................13

Discovery List................................................................................ 14

Monitor List................................................................................... 14

Device Setting................................................................................16

Toolbar........................................................................................... 17

Configuring the Switch.................................................................. 18

Setup Menu.................................................................................... 20

Configuring Setup Setting..............................................................21

Port Settings...............................................................................21

VLAN Settings (Virtual Local Area Network)..........................23

Trunk Setting .............................................................................25

Mirror Setting.............................................................................27

Device Status .............................................................................27

Statistics..................................................................................... 28

System Setting ...........................................................................31

Trap Setting................................................................................31

Password Setting........................................................................32

Backup Setting...........................................................................32

Reset Setting ..............................................................................33

Logout ............................................................................................ 33

ABOUT THIS MANUAL

Congratulations on your purchase of the DGS-1248T Web Smart 48-Port 10/100/1000Mbps Gigabit Switch. This device integrates 1000Mbps Gigabit Ethernet, 100Mbps Fast Ethernet, and 10Mbp s Ethernet network capabilities in a highly flexible package.

Purpose

This manual discusses how to install your 48-Port 10/100/1000Mbps Gigabit Web Smart Switch.

Terms/Usage

In this manual, the term “Switch” (first letter upper case) refers to your Web Smart Switch, and “switch” (first letter lower case) refers to other Ethernet switches.

INTRODUCTION

This chapter describes the features of the DGS-1248T Web Smart 48-Port 10/100/1000Mbps Gigabit Switch and some background information about Ethernet/Fast Ethernet/Gigabit Ethernet switching technology.

Gigabit Ethernet Technology

Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for CSMA/CD protocol, full-duplex, flow control, and management objects, but with a tenfold increase in theoretical throughput over 100-Mbps Fast Ethernet and a hundredfold increase over 10-Mbps Ethernet. Since it is compatible with all 10-Mbps and 100-Mbps Ethernet environments, Gigabit Ether net provides a strai ghtforward upgrade without wasting a company’s existing investment in hardware, software, and trained personnel.

The increased speed and extra bandwidth offered by Gigabit Ethernet are essential to coping with the network bottlenecks that frequently develop as computers and their busses get faster and more users use applications that generate more traffic. Upgrading key components, such as your backbone and servers to Gigabit Ethernet can greatly improve network response times as well as significantly speed up the traffic between your subnets.

Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and similar data-intensive applications. Likewise, since data transfers occur 10 t im es faster than Fast Ethernet, servers outfitted with Gigabit Ethernet NIC’s are able to perform 10 times the number of operations in the same amount of time.

In addition, the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost-effective method to take a dvantage of t oday and tom orrow’s rap idly improving switching and routing internetworking technologies. And with expected advances in the coming years in silicon technology and digital signal processing that will enable Gigabit Ethernet to eventually operate over unshielded twisted-pair (UTP) cabling, outfitting your network with a powerful 1000-Mbps-capable backbone/server connection creates a flexible foundation for the next generation of network technology products.

Fast Ethernet Technology

The growing importance of LANs and the increasing complexity of desktop computing applications are fuel ing the nee d for high performa nce 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 no n-disrupt ive, smoot h evolution f rom the current 10BASE-T technology. The non-disruptive and smooth evolution nature, and the dominating potential market base, virtually guarantees cost-effective and high performance Fast Ethernet solutions.

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

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 Et hernet p rot ocol tra nsm itti ng am ong c onne ct ed 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 do not 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 maintain ing the same network cabling and adapter cards.

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.

VLAN (Virtual Local Area Network)

A VLAN is a group of end-stations that are not constrained by their physical location and can communicate as if a common broadcast domain, a LAN. The primary utility of using VLAN is to reduce latency and need for routers, using faster switching instead. Other VLAN utility includes:

Security: Security is increased with the reduction of opportunity in eavesdropping on a broadcast network because data will be switched to only those confidential users within the VLAN.

Cost Reduction: VLANs can be used to create multiple broadcast domains, thus eliminating the need of expensive routers.

Features

 48×10/100/1000Mbps Auto-negotiation Gigabit Ethernet ports  4 x 1000Mbps SFP(Mini GBIC) (Auto-Sense) for optional SFP(Mini

GBIC) transceiver to extend distance, share with 4 1000BASE-T ports

 All RJ-45 ports support auto MDI/MDIX, so there is no need to use

cross-over cables or an up-link port

 Half-duplex transfer mode for connection speed 10Mbps and 100Mbps  Full-duplex transfer mode for connection speed of 10Mbps, 100Mbps,

and 1000Mbsps

 Wire speed reception and transmission

 Store-and-Forward switching scheme capability to support rate

adaptation and ensure data integrity

 Up to 8K unicast addresses entities per device, self-learning, and table

aging

 1632KBytes packet buffer  Supports IEEE 802.3x flow control for full-duplex mode ports  Supports 802.1Q VLAN  Supports Port-base QoS, 802.1p QoS  Supports Trunk  Supports Port-mirroring  Supports Port-setting for Speed/Disable, Flow control  Easy configuration via Web Browser  Easy setting via Web Management Utility  Standard 19” Rack-mount size

UNPACKING AND INSTALLATION

This chapter provides unpacking and installation information for the Switch.

Unpacking

Open the shipping cartons of the Switch and carefully unpacks its contents. The carton should contain the following items:

 One DGS-1248T Web Smart 48-Port 10/100/1000Mbps Gigabit

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  CD-ROM with Web Management Utility and Manual

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

Installation

The site where you install the hub stack may greatly affect its performance. When installing, consider the following pointers:

Install the Switch in a fairly cool and dry place. See Technical Specifications for the acceptable temperature and humidity operating ranges.

Install the Switch in a site free from strong electromagnetic field generators (such as motors), vibration, dust, and direct exposure to sunlight.

Leave at least 10cm of space at the front and rear of the hub for ventilation. Install the Switch on a sturdy , level surface that can support it s weight, or in an

EIA standard-size equi pment rack. For information on rack installation, see the next section, Rack Mounting.

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 protect the hub case from scratching.

Figure 1. Attach the adhesive rubber pads to the bottom

Rack Mounting

The Switch 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.

Figure 2. Combine the Switch with the provided screws

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

Figure 3. Mount the Switch in the rack

Connecting Network Cable

The Switch supports 1000Mbps Gigabit Ethernet that runs in Auto-negotiation mode and 10Mbps Ethernet or 100Mbps Fast Ethernet that runs both in half- and full-duplex mode and 1000Mbps Gigabit Ethernet runs in full-duplex mode using four pair of Category 5 Cable.

These RJ-45 ports are Auto-MDI type port. The Switch can auto transform to MDI-II or MDI-X type, so you can just make an easy connection that without worrying if you are using a standard or crossover RJ45 cable.

There are 4 additional SFP/mini-GBIC slots for optional SFP/mini-GBIC modules.

AC Power

The Switch uses the 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.

IDENTIFYING EXTERNAL COMPONENTS

This chapter describes the front panel, rear panel, and LED indicators of the Switch.

Front Panel

The figure below shows the front panels of the Switch.

10/100/1000 Base-T Twisted-Pair Ports w/ LED Indicators

┌─────────────────────────────┐

└──┘

SFP(Mini GBIC) Ports

Figure 4. Front panel of 48-Port Gigabit Ethernet Switch

LED Indicator:

Comprehensive LED indicators display the status of the Switch and the network (see the LED Indicators chapter below).

1000BASE-T Twisted Pair Ports (Port 1~48)

The DGS-1248T is equipped with fourty- eight Gigabit twisted pair ports that are auto negotiable 10/100/1000Mbps and also support auto MDI/MDIX crossover detection. These ports can operate in half- and full-duplex modes.

SFP(Mini GBIC) Ports (Option Port 45~48)

The Switch is equipped with Four SFP(Mini GBIC) ports, supporting optional 1000BASE-X SFP(Mini GBIC) transceivers.

Note: When the port is set to “Forced Mode”, Auto MDI/MDIX will be disabled.

Reset:

The Reset button is used to reset all settings back to the factory d efaults.

Note: Be sure that you record the settings of your device, or else all settings will be erased when pressing the “Reset” button.

Rear Panel

Figure 5. Rear panel of the Switch

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.

UNDERSTANDING LED INDICATORS

The front panel LEDs provides instant status feedback, and helps monitor and troubleshoot when needed.

Figure 6. LED indicators of the Switch

Power and System LEDs

POWER: System Power Indicator

On : When the Power LED lights on, the Switch is receiving power.

Off :

When the Power turns off or the power cord has an improper connection.

CPU: Management Indicator

Blinking : When the CPU is working, the CPU LED is blinking.

On/Off : The CPU is not working.

Ports 1~48 Status LEDs

Link/ACT: Link/Activity

On : When the Link/ACT LED lights on, the respective port is successfully

Blinking : When the Link/ACT LED is blinking, the port is transmitting or

Off : There is no link.

connected to an Ethernet network.

receiving data on the Ethernet network.

Speed:

Green : When the Speed LED lights green, the respective port is connected to a

1000Mbps Gigabit Ethernet network.

Amber : When the Speed LED lights amber, the respective port is connected to a

Off : When the Speed LED lights off , the respective port is connected to a

100Mbps Fast Ethernet network.

10Mbps Fast Ethernet network.

mini-GBIC Port 45F ~ 48F LEDs

Link/ACT:

On : When the mini-GBIC module is installed and connected to a

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

Off : No mini-GBIC module is installed or connected to a network.

network, the Link LED lights on.

on the network.

CONFIGURATION

Through the Web Browser you can configure the Switch functions such as VLAN, Trunking, QoS… etc.

With the attached Web Management Utility, you can easily discover all Web Managed Switches, assign the IP Address, change the password, and upgrade with new firmware.

Installing the Web Management Utility

The following provides instructions guiding you through the installations of the Web Management utility.

1. Insert the Utility CD in the CD-ROM Drive.

2. From the Start menu on the Windows desktop, choose Run.

3. In the Run dialog box, type D:\Web Management Utility\setup.exe (D:\ depends where your CD-ROM drive is located) and click OK.

4. Follow the on-screen instructions to install the utility.

5. Upon completion, go to Program Files -> web_management_utility and

execute the Web Management utility. (Figure 7.)

Figure 7. Web Management Utility

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