D-Link DES-1250G User manual

Before Your Begin
This Quick Installation Guide gives step-by-step instructions for setting up the D-Link
DES-1250G Web-Smart Switch. The model you have purchased may appear slightly
different from those shown in the illustrations. For more detailed information about the
switch, its components, making network connections, and technical specifications,
please refer to the User’s Manual on the master CD included with your switch.
Check Your Package Contents
These are the items included with your DES-1250G purchase:
(on the top include the rubber feet, rackmount kit as part of package contents) If any of the above
items are missing, please contact your reseller.
©2004 D-Link Systems, Inc. All rights reserved. Trademarks or registered trademarks are the property of their respective
holders. Software and specifications subject to change without notice.
• DES-1250G
D-Link Web Smart 48-Port 10/100Mbps+2-
Port combo 10/100/1000Mbps Copper/Mini-
GBIC Gigabit Ethernet Switch
• CD-ROM (containing Manual and Utility
Installation)
• 100–240VAC 50/60Hz
Power Adapter
Using a powe
r
supply with a
different voltage rating
will damage and void
the warranty for this
product.
DES-1250G
Web Smart48-Port
10/100Mbps+2-Port combo
10/100/1000Mbps Copper/Mini
GBIC Gigabit Ethernet Switch

2
Setup The DES-1250G Switch
The setup of the Switch can be performed using the following steps:
A. Install the DES-1250G in a fairly cool and dry place. See the
Technical Specifications for the acceptable operation temperature
and humidity ranges.
B. Install the DES-1250G in a site free from strong electromagnetic
field generators (such as motors), vibration, dust, and direct
exposure to sunlight.
C. Leave at least 10cm (about 4 inches) of space at the front and rear
of the hub for ventilation.
D. Visually inspect the DC power jack and make sure that it is fully
secured to the power adapter.
E. Install the DES-1250G on a sturdy, level surface that can support
its weight, or in an EIA standard-size equipment rack.
F. 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.
Attach the adhesive rubber pads to the bottom
Rack Mounting
The DES-1250G 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 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.

3
Mount the Switch in the rack
Connecting Network Cable
The DES-1250G supports 2 ports of 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-
1250G 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-1250G can be used with AC power supply 100~240V AC,
50~60Hz. 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.
Connect The DES-1250G Gigabit
Switch To Your Network
Front Panel
LED Indicators Mini GBIC Ports
┌―――――――――――――――――――――――――――┐┌―┐
└―――――――――――――――――――――――――――┘└―┘
10/100 Base-TX 1000 Base-T
Twisted-Pair Ports Twisted Pair Ports

4
 10/100BASE-TX Twisted-Pair Ports (Port1~48)
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 49~50)
The DES-1250G 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.
 Mini-GBIC Ports (Option Port 49~50)
The Switch is equipped with two mini-GBIC ports, supported optional
1000BASE-SX/LX mini-GBIC module.
Note: When the port is set to “Forced Mode”, Auto MDI/MDIX will
be disabled.
LED Indicators
LED stands for Light-Emitting Diode.
The front panel LEDs provide instant status feedback and simplify
monitoring and troubleshooting tasks.
LED indicators of the Switch
 Power LEDs
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.

5
CPU LEDs ( Management Indicator)
Blinking When the CPU is working, the System LED is
blinking.
On/Off The CPU is not working.
 Ports 1-48 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 There is no link.
 Ports 49 & 50 Status LEDs
Link/Act:
On : When the Link/ACT LEDA lights on, the
respective port is successfully connected to an
Ethernet network.
Blinking : When the Link/ACT LED is blinking, the port is
transmitting or receiving data on the Ethernet
network.
Off : There is no link.
Speed:
On
(Green)
: When the green light is on, the respective port is
connected to a 1000Mbps Gigabit Ethernet
network.
On
(Amber)
When the Amber light is on, the respective port is
connected to a 100Mbps Fast Ethernet network.
Off : When the respective port is connected to a
10Mbps Ethernet or No link
 Option Ports 47~48 mini-GBIC Status LEDs
Link/Act
On : When the mini-GBIC module is installed and
connected to a network, the Link/ACT LED lights on.
Blinking : When the LED is blinking, the mini-GBIC module is
receiving data on a network.
Off : There is no link.

6
Installing the Web Management
Utility
Through the Web browser you can configure switch functions such as
VLAN, Trunking, QoS… etc.
The following instruction guides you to install 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 1.)
Figure 1. Web Management Utility
Configuring the Switch
The DES-1250G has a Web GUI interface for smart switch
configuration. The Switch can be configured through the Web browser.
A network administrator can manage, control and monitor the switch
from the local LAN. This section indicates how to configure the Switch
to enable its smart functions.
Use Internet Explorer 5.0 or above Web browser.

7
Login
Before you configure this device, note that when the Web Smart Switch
is configured through an Ethernet connection, make sure the manager
PC must be set on the same IP network. For example, when the default
network address of the default IP address of the Web Smart Switch is
192.168.0.1, then the manager PC should be set at 192.168.0.x (where x
is a number between 2 and 254), and the default subnet mask is
255.255.255.0.
Enter IP address http://192.168.0.1 (the factory-default IP address
setting) to the address location. (Figure 2.)
Figure 2.
Or through the Web Management Utility, you do not need to remember
the IP Address, Select the device shown in the Monitor List of the Web
Management Utility to settle the device on the Web browser.
When the following dialog page appears, remain enter the default
password "admin" and press Login to enter the main configuration
window. (Figure 3.)
Figure 3.
After entering the password, the main page appears and the screen will
display the device status. (Figure 4.)

8
Figure 4.
Setup Menu
When the main page appears, find the Setup menu on the left side of
the screen (Figure 5). Click on the setup item that you want to configure.
There are eleven options: Port Settings, VLAN Settings, Trunk Setting,
Mirror Setting, Device Status, System Settings, Trap Setting, Password
Setting, Backup Setting, and Reset Setting as shown in the Main Menu
screen.
Figure 5.

9

10
Technical Support
You can find software updates and user documentation on the D-Link website.
D-Link provides free technical support for customers within the United States
and within Canada for the duration of the warranty period on this product.
U.S. and Canadian customers can contact D-Link technical support through our
website, or by phone.
Tech Support for customers within the United States:
D-Link Technical Support over the Telephone:
[phone]
Monday to Friday 6:00AM to 6:00PM PST
D-Link Technical Support over the Internet:
http://support.dlink.com
email:[email protected]
Tech Support for customers within Canada:
D-Link Technical Support over the Telephone:
[phone]
Monday to Friday 8:30am to 9:00pm EST
Saturday adn Sunday 11:00am to 7:00pm EST
D-Link Technical Support over the Internet:
http://support.dlink.ca
email:[email protected]
Tech Support for customers within
the United Kingdom & Ireland:
D-Link UK & Ireland Technical Support over the Telephone:
[phone] (United Kingdom)
[phone] (Ireland)
Monday to Friday 8:00 am to 10:00 pm
D-Link Technical Support over the Internet:
http://www.dlink.co.uk