D-Link DES-1026G/E1A Bedienungsanleitung
D-Link DES-1026G
24-Port 10/100Mbps + 2-Port 10/100/1000Mbps
Gigabit Ethernet Switch
Manual
Version 3.00
January 2, 2008
PN: 29071600E7224T0
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Table of Contents
1. Package Contents ............................................. 3
2. Introduction........................................................ 3
3. Installation.......................................................... 8
4. Technical Specifications..................................11
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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
4
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.
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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 320KBytes RAM for data buffering
Extensive front-panel diagnostic LEDs
IEEE 802.3x flow control for full-duplex
Back pressure flow control for half-duplex
Standard 19” Rack-mount size
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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.
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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.
8
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.
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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
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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. 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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