Product Announcement
DES-1250G
Date: November 19, 2004
Product name:
Revision:
Available:
Picture:
Why Sell This Product:
DES-1250G
A1
 Add more products to your Smart switch series.
 Higher port density, 48 10/100Mbps ports, up from 24 10/100Mbps ports from
the current model DES-1226G.
 New low cost, easy management.
 Can be sold through retail stores or SI. This smart switch can be targeted at
SOHO and SMB. No complex management functions, just enough software
functions for basic bandwidth intensive application use.
Selling Points
Key Features:
Technical Details:
 Newly adjusted low price 10/100Mbps switch.
 Additional SFP Gigabit ports.
 Abundant choices of SFP transceivers from D-Link.
 Easy but versatile web-based management.
 48 10/100BASE-TX Ethernet ports for workstations
 2 combo 1000BASE-T/SFP for flexible copper/fiber Gigabit connection
 Auto MDI/MDIX cross over for all twisted-pair ports
 802.3x Flow Control for protection against data loss
 Port mirroring for traffic monitoring
 Port trunks for server/network backbone attachments
 802.1Q VLAN to enhance security/network performance
 802.1p Priority Queues, port-based QoS
 Easy web-based switch configuration/management and network monitoring
 Standard rack-mount size
General
Port Standards & Functions
- IEEE 802.3 10BASE-T Ethernet (twisted-pair copper)
- IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)
- IEEE 802.3ab 1000BASE-T Gigabit Ethernet (twisted-pair copper)
- ANSI/IEEE 802.3 NWay auto-negotiation
- IEEE 802.3x Flow Control
- Port mirroring
Number of Ports
- 48 10BASE-T/100BASE-TX ports
- 2 combo 10/100/1000BASE-T/SFP *
* Use of the SFP will disable their corresponding 10/100/1000BASE-T connections.
SFP Support
- IEEE 802.3z 1000BASE-SX multi-mode fiber (DEM-311GT transceiver)
- IEEE 802.3z 1000BASE-SX multi-mode fiber (DEM-312GT2 transceiver)
- IEEE 802.3z 1000BASE-LX single-mode fiber (DEM-310GT transceiver)
- IEEE 802.3z 1000BASE-LH single-mode fiber (DEM-314GT transceiver)
- IEEE 802.3z 1000BASE-ZX single-mode fiber (DEM-315GT transceiver)
- IEEE 802.3ab 1000BASE-T Cat. 5 twisted-pair (DGS-712 transceiver)
Protocol
CSMA/CD
Data Transfer Rates
- Ethernet:
10Mbps (half duplex)
20Mbps (full duplex)
- Fast Ethernet:
100Mbps (half duplex)
200Mbps (full duplex)
- Gigabit Ethernet:
2000Mbps (full duplex)
Topology
Page 1 of 4
Product Announcement
Star
Network Cables
- UTP Cat. 5, Cat. 5e (100 m max.)
- EIA/TIA-568 100-ohm STP (100 m max.)
Full/half Duplex
- Full/half duplex for 10/100Mbps speeds
- Full duplex for Gigabit speed
Media Interface Exchange
Auto MDI/MDIX adjustment for all twisted-pair ports
LED Indicators
- Per device: Power/CPU
- Per 10/100BASE-TX port: Link/Act, 10/100Mbps Speed
- Per 10/100/1000BASE-T port: Link/Act, 100/1000Mbps Speed
- Per SFP: Link/Act
Software
VLAN
- 802.1Q VLAN Tagging
- Maximum 64 VLANs per device
Quality of Service (QoS)
- 802.1p Priority Queues
- Maximum number of queues: 2
Port Trunks
- Up to 6 10/100Mbps port trunks per device
(2, 4 or 8 10/100BASE-TX ports per trunk)
- 1 Gigabit port trunk per device (2 1000BASE-T ports per trunk)
Management & Configuration
- Web-based configuration
- Auto-discovery utility
- Configuration reset through software or hardware (reset button)
Performance
Switch Capacity
13.6Gbps
Transmission Method
Store-and-forward
MAC Address Table
4K entries per device
MAC Address Learning
Automatic update
Packet Filtering/Forwarding Rates (half duplex)
Maximum 1,488,095 pps per port
RAM Buffer
1.536MBytes per device
Physical & Environmental
AC Input
100 to 240 VAC 50/60Hz internal universal power supply
Power Consumption
28 watts (max.)
Ventilation
40 x 40 mm DC fan x 1
Operating Temperature
0 to 40 ℃
Storage Temperature
-10 to 70 ℃
Operating Humidity
10% to 90% non-condensing
Storage Humidity
5% to 90% non-condensing
Dimensions
441 (W) x 309 (D) x 44 (H) mm
19-inch standard rack mounting size
Weight
4.4 kg
Emission (EMI)
- FCC Class A
- CE Class A
- C-Tick
Safety
UL
EMI/EMC Report
Safety
Packaging Style
FCC No.
 CE No.
 VCCI No.
 CTR-21 No.
 C-Tick No.
 A-Tick No.
 FDA No.
 R&TTE No.
 BSMI No.
 Others
 TUV No.
 CUL No.
 CSA No.
 Others
 Clamshell  White Box Gift Box  Bulk  White Box with D-Link Logo
Page 2 of 4
Product Announcement
Packaging Contents:
UPC Code:
 Others

DES-1250G device

One set accessory including 2 Rack mount ear/4 Rubber feet and 8 Screws

One AC power cord

One CD Rom for Manual/QIG/Utility

One hard copy QIG
EES1250GBEA1
790069272448
IES1250GN.A1
790069272417
IES1250GA.A1
790069272400
IES1250GE.A1
790069272394
TES1250GA.A1
790069272387
NES1250GCNA1
790069272370
BES1250GA.A1
790069272462
3
Units Per Carton:
For USA
Cartons Per Pallet:
Dimensions and Weight: Box:
Air:16, Sea: 24
For WW
Air:16, Sea: 24
239x168x36(Type A)
223x148x75(Type B)
273x205x66(Type D)
273x205x119(Type D1)
265x161.5x69(Type C)
288x245x66(Type E)
mm,Others 441mm x 309mm x 44mm, 6 kg
Carton: 593x450x289 mm, 19.2 kg
Pallet: (by Air) 1020 x 1220 x 1550 mm, 298 kg (for USA)
1200 x 1100 x 1550 mm, 289 kg (for WW)
(by Sea) 1020 x 1220 x 2000 mm, 430 kg (for USA)
1200 x 1100 x 2000 mm, 421 kg (for WW)
INTRASTAT weight: 0.51 kg (Box)
Packing material weight (Box):
- Paper: 0.3
kg
- Plastic: 0.2
kg
- Mixed:
0.01 kg
Page 3 of 4
Product Announcement
PMA
Product Class
1 Switch
Item Group
1-119 Switch
Sub Group
1-233 Standalone/ Modular
Intelligence
304 Un-Managed
Tech.(Features)
1-445 Gigabit Ethernet
Layer
602 L2
Application
501 Enterprise
Q'ty
1
Interface 1
Interface
703 Net
Net Interface
1-803 10/100BASE-T
Port NO.
1
Interface 2
Interface
703 Net
Net Interface
1-830 Mini GBIC
Port NO.
2
Interface 3
Page 4 of 4