D-Link DES-1026G User manual

D-Link DES-1026G
24-Port 10/100Mbps + 2-Port Combo GE
Copper/SFP Ethernet Switch
Manual
Version 5.00
October 10.2013
17.P6.202014805

Table of Contents
1. Package Contents ............................................. 3
2. Introduction........................................................ 3
3. Installation.......................................................... 8
4. Technical Specifications...................................11

1. Package Contents
One DES-1026G 24-Port 10/100Mbps + 2-Port Combo GE
Copper/SFP 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 Combo GE Copper/SFP 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 Combo GE Copper/SFP Ethernet Switch.
In this manual, the term “Switch” (first letter upper case) refers to your
DES-1026G 24-Port 10/100Mbps + 2-Port Combo GE Copper/SFP
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 hubs, which use 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
considerably reduces 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, 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*Combo GE
Copper/SFP 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 512KBytes 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

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 10/100/Mbps Etherent network.
Blinking
When the LED light is blinking, the port is transmitting or
receiving data on the 10/100Mbps Ethernet network.
Off
No link.
Ports 25&26 Status LEDs
LINK/ACT
On
When the LED light on, the respective port is connected to
a 10/100/1000Mbps Ethernet network.
Blinking
When the LED light is blinking, the respective port is
transmitting
or receiving data on the 10/100/1000Mbps
Ethernet network.
Off
No link.
1000Mbps
On
When the LED light on, the respective port is connected to

a Gigabit Ethernet network.
Off
When the LED light is off, the respective port is connected
to a 10/100Mbps Ethernet network, or no link.
Connections
Front Panel 10/100 Base-TX Twisted-Pair Ports
LED Indicators Giga Combo ports
10/100 BASE-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/MDIX 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.
2*Combo GE Copper/SFP Ethernet ports (Port25~26)
The DES-1026G is equipped with 2*Combo GE Copper/SFP
Ethernet 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. Furthermore, an SFP port can
also connect to servers and devices via fiber.
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
protect the hub case from scratches.
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.
.

Connecting Network Cable
The DES-1026G supports 10/100/1000Mbps Gigabit Ethernet and fiber
connections. It runs in 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.
.

4. Technical Specifications
General
Standards
IEEE 802.3 10BASE-T Ethernet
IEEE 802.3u 100 BASE-TX Fast Ethernet
IEEE 802.3ab 1000BASE-T Gigabit Ethernet
IEEE 802.3z 1000BASE-X
Protocol
CSMA/CD
Data Transfer
Rate
Ethernet: 10Mbps (half duplex), 20Mbps (full duplex)
Fa
st Ethernet: 100Mbps (half duplex), 200Mbps (full duplex)
Gigabit Ethernet: 2000Mbps (full duplex)
Topology
Star
Network Cables
10BASET: 2-pair UTP/STP Cat. 3,4,5; up to 100m
100BASE-TX: 2-pair UTP/STP Cat. 5; up to 100m
1000BASE-T: 4-pair UTP/STP Cat. 5; up to 100m (Cat. 5E is
recommended)
Single-mode and Multi-mode fiber
Number of Ports
24 ×10/100BASE-TX Auto-MDIX STP ports
2 × Combo GE Copper/SFP Ethernet ports
Physical and Environmental
AC inputs
100 to 240V AC, 50/60 Hz internal universal power supply
Power
Consumption
Maximum 6.69 watts
Temperature
Operating:0 ° ~ 40 ℃ , Storage:-10 ° ~ 70 ℃
Humidity
Operating: 10%~90%, Storage: 5%~90%
Dimensions
440mm×140mm×44mm (W×H ×D)
Emissions
FCC/ CE/BSMI/CCC Mark Class A
Safety
FCC/ CE/BSMI/CCC Mark Class A
Performance
Transmit Method
Store-and-forward
RAM Buffer
512KBytes per device
Filtering Address +
Table
8K entries per device
Packet Filtering/
Forwarding Rate
10Mbps Ethernet: 14,880/pps 100Mbps Fast Ethernet:
148,800/pps 1000Mbps Gigabit Ethernet: 1,488,000/pps
MAC Address
Learning
Automatic update