D-Link DGS-1248T - Switch User manual

Before Your Begin
This Quick Installation Guide gives step-by-step instructions for setting up the D-Link
DGS-1248T Gigabit 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 master CD included with your
switch.
Check Your Package Contents
These are the items included with your DGS-1248T purchase:
If any of the above items are missing, please contact your reseller.
©2006 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.
• DGS-1248
T
D-Link 48-Port 10/100/1000Mbps + 4 Combo
Mini GBIC Gigabit Smart 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.
DGS-1248T
D-Link 48-Port
10/100/1000Mbps + 4 Combo
Mini GBIC Gigabit
Smart Switch

2
Setup the DGS-1248T Gigabit Smart
Switch
The setup of the Switch can be performed using the following steps:
A. Install the DGS-1248T in a fairly cool and dry place. See Technical
Specification for the acceptable operation temperature and humidity
ranges.
B. Install the DGS-1248T 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 DGS-1248T 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

3
Rack Mounting
The DGS-1248T 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
Connecting Network Cable
The DGS-1248T 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 DGS-1248T 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 DGS-1248T 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.

4
Connect The DGS-1248T Gigabit
Smart Switch To Your Network
Front Panel
10/100/1000 Base-T Mini GBIC Ports
Twisted-Pair Ports
┌────────────────────────────────────────┐ ┌──┐
1000BASE-T Twisted Pair Ports (Port 1~48)
The DGS-1248T 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 45~48)
The Switch is equipped with two Mini GBIC/SFP ports, supported
optional 1000BASE-SX/LX Mini GBIC transceivers.
Note: When the port was set to “Forced Mode”, the Auto
MDI/MDIX will be disabled.

5
LED Indicators
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 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.
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 Link/Act LED 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 No link.

6
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 45~48 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 No link.

7
Installing the SmartConsole Utility
Through the Web Browser you can configure the Switch such as VLAN,
Trunking, QoS… etc.
The following instruction guides you to install the SmartConsole 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:\ SmartConsole 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 -> SmartConsole Utility
and execute the SmartConsole Utility. (Figure 1.)
Figure 1

8
Configuring the Switch
The DGS-1248T 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.
Note: Use Internet Explorer 5.5 or above Web browser to properly
access and view the configuration.
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 SmartConsole Utility, you do not need to remember the IP
Address, select the device shown in the Monitor List of the
SmartConsole 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 comes up, the screen will
display the device status. (Figure 4.)

9
Figure 4.
Setup Menu
When the main page appears, find the Setup menu in the left side of the
screen (Figure 5). Click on the setup item that you want to configure.
There are eleven options: System Setting, Trap Setting, Port Setting,
SNMP Setting, Password Access Control, 802.1Q VLAN, Trunking,
IGMP Snooping, 802.1D Spanning Tree, Port Mirroring, 802.1p Default
Priority, Safeguard Engine, Broadcast Storm Control, 802.1X Setting,
Static MAC, Dynamic Forwarding Table and Statistics. (Figure 5).
Figure 5.

10
Tool
You can also find the Tool menu on the main page (Figure 6). Click on it
and scroll down as shown in Figure 6, and you can see four options:
Reset, Config Backup & Restore, Firmware Backup & Upload and
System Reboot.
Figure 6