DES-1252
D-Link 48-Port 10/100Mbps with 4 10/100/1000Base-T ports and 2 Combo SFP Smart Switch
Before Your Begin
This Quick Installation Guide gives step-by-step instructions for setting up the D-Link DES-1252 Fast Ethernet 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 CD included with your switch.
Check Your Package Contents
These are the items included with your DES-1252 purchase:
• DES-1252
D-Link 48-Port 10/100Mbps Smart Switch with 4 10/100/1000Base-T ports and 2 Combo SFP
• CD-ROM (containing Manual and Utility
Installation)
• 100–240VAC 50/60Hz Power Adapter
If any of the above items are missing, please contact your reseller.
Using a power supply with a
different voltage rating will damage and void the warranty for this product.
©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.
Setup for the DES-1252 Fast Ethernet Smart Switch
Before physically installing the switch, please make note of the following recommendations:
A.Install the DES-1252 in a fairly cool and dry place. Technical Specifications such as operating temperatures and, other important information can be found in the manual located on the supplied CD.
B.Install the DES-1252 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 switch 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-1252 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 switch and protect the switch case from scratching.
Attach the adhesive rubber pads to the bottom
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Rack Mounting
The DES-1252 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.
Mount the Switch in the rack
Connecting Network Cables
The DES-1252 has 48 ports that support 10/100Mbps Fast Ethernet; it also has 4 10/100/1000Base-T Ports and 2 Combo SFPs. It runs full/half duplex transfer mode for 10/100Mbps and full duplex transfer mode for 1000Mbps. Each port on the DES-1252 supports Auto- MDI/MDI-X. Auto-MDI/MDI-X is a feature that enables the switch to auto sense what kind of cable is used on a port (straight or crossover). This allows any type of cables to be used with the switch regardless of what device is being connected.
AC Power
The Switch utilizes an AC power supply of 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.
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Connecting The DES-1252 Fast
Ethernet Smart Switch To Your
Network
Front Panel |
|
Twisted-Pair Ports |
Mini GBIC Ports |
┌─────────────────────────────┐ ┌┘
└┘ |
└─┘ |
LED Indicators |
10/100/1000 Base-T |
|
Twisted Pair Ports |
10/100 BASE-TX Twisted Pair Ports (Port 1~48)
The DES-1252 is equipped with 48 Fast Ethernet twisted pair ports that are auto-negotiable 10/100Mbps and also support auto MDI/MDIX crossover detection. All these 48 ports can operate in halfand fullduplex modes.
10/100/1000 BASE-T / Mini GBIC Combo Ports (Option
Port 49~50)
The Switch is also equipped with two combo 10/100/1000 Base-T / Mini GBIC ports, supporting optional 100BASE-FX or 1000BASESX/LX Mini GBIC modules for fiber uplinks.
10/100/1000 BASE-T Twisted Pair Ports (Port 51~52)
Finally there are 2 Gigabit twisted pair ports that are auto negotiable 10/100/1000Mbps with full auto MDI/MDIX crossover detection support that can also operate in halfand fullduplex modes.
[Note: If the port is set to “Forced Mode”, Auto-MDI/MDIX is disabled]
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