D-Link DGS-1008TL User Manual

DGS-1008TL

8-Port 10/100/1000Mbps

Gigabit Ethernet Switch

Manual

RECYCLABLE

Rev.1.20

29071600GS08010

TABLE OF CONTENTS

ABOUT THIS MANUAL ........................................................................................................ 1

TERMS ..................................................................................................................................... 1

OVERVIEW OF THIS MANAUL ................................................................................................. 1

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

GIGABIT ETHERNET TECHNOLOGY......................................................................................... 2

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

FEATURES ............................................................................................................................... 5

IEEE802.1P AND QOS ............................................................................................................ 6

ADVANTAGES OF QOS ............................................................................................................ 6

MAPPING QOS ON THE SWITCH .............................................................................................. 7

UNDERSTANDING QOS............................................................................................................ 7

UNPACKING AND SETUP.................................................................................................... 8

UNPACKING............................................................................................................................. 8

SETUP ...................................................................................................................................... 9

DESKTOP OR SHELF INSTALLATION........................................................................................ 9

RACK INSTALLATION ............................................................................................................ 10

IDENTIFYING EXTERNAL COMPONENTS.................................................................. 11

FRONT PANEL ....................................................................................................................... 11

LED INDICATORS.................................................................................................................. 11

REAR PANEL ......................................................................................................................... 13

TECHNICAL SPECIFICATIONS....................................................................................... 14

1

ABOUT THIS M ANUAL

This manual will tell you how to install your D-Link DGS-1008TL
8-Port 10/100/1000Mbps Gigabit Ethernet Switch, and how to
connect it to your Gigabit Ethernet network.

Terms

For simplicity, this documentation uses the terms “Switch” (first
letter upper case) to refer to the DGS-1008TL 8-Port
10/100/1000Mbps Gigabit Ethernet Switch, and “switch” (first
letter lower case) to refer to all Ethernet switches, including the
DGS-1008TL 8-Port 10/100/1000Mbps Gigabit Ethernet Switch.

Overview of this Manaul

 Introduction. Describes the Switch and its features.

 Unpacking and Setup. 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 specifications of

the Switch.

2

INTRODUCTION

This section describes the features of the DGS-1008TL 8-Port
10/100/1000Mbps Gigabit Ethernet Switch, as well as giving some
background information about Gigabit Ethernet and 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 mode, flow control, and management objects,
but with a tenfold increase in theoretical throughput over 100Mbps
Fast Ethernet and a hundredfold increase over 10Mbps Ethernet.
Since it is backwards compatible with all 10Mbps and 100Mbps
Ethernet environments, Gigabit Ethernet provides a straightforward
upgrade without rendering a company’s existing investment in
hardware, software, and trained personnel obselete.

The increased speed and extra bandwidth offered by Gigabit
Ethernet is essential to coping with the network bottlenecks that
frequently develop as computers and their buses get faster and more
users use high-bandwidth applications that generate more traffic.
Upgrading key components, such as 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 supports video conferencing, complex imaging,
and similar data-intensive applications. Likewise, since data
transfers occur 10 times 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.

3

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.

4

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 traditional
10Mbps Ethernet, 100Mbps Fast Ethernet, 1000Mbps Gigabit
Ethernet are also ideal for bridging between existing 10Mbps
networks, 100Mbps networks, and new 1000Mbps 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.