10/1OOMbps Switches With Gigabit Options
Where to buy


16 or 24 10/100Mbps Ports
Each switch comes with 16 or 24 ports 10/100Mbps ports designed for flexible connection and Ethernet/Fast Ethernet integration. These intelligent ports detect the network speed and auto-negotiate between 100BASE-TX and 10BASE-T, as well as full- and half-duplex. The 10/100Mbps ports are ideal for segmenting the network into small, connected sub networks for superior performance, enabling the most demanding multimedia and imaging applications over the network.

Optional Gigabit Fiber Ports
These ports come as optional modules, they can be installed in the open slot on the front of the switches. Available for selection are 1000BASE-SX ports and GBIC ports (for flexible fiber cable types). The Gigabit fiber ports are capable of handling very large amounts of data in a secure topology linking to a backbone or high-power servers.

Optional 1000Mbps Copper Ports
These ports also come as optional modules, they support 1000BASE- T standards. Connection is through the twisted-pair copper wire cables using RJ-45 connectors. These ports support full duplex and flow control. At 2000Mbps full-duplex, these ports are suitable for connection to high speed departmental servers.

High-bandwidth Port Trunking
Multiple ports can be combined into a high-bandwidth, full-duplex trunk for switch-to-switch or switch-to-server connection. Port trunking gives users the high-speed load-sharing connection.

VLANs for Performance and Security
The switches support up to multiple port-based VLANs to extend the broadcast domain, segment network traffic and improve perfonnance and manageability. This allows adds, moves and changes to be easily carried out. VLAN also provides security by limiting broadcast domains, traffic in different segments and subnets can be separated for maximum throughput and secure networking.

General features

- IEEE 802.3 10BASE- T Ethernet twisted-pair copper)
- IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)
- IEEE 802.3z 1000BASE-SX Gigabit Ethernet (fiber)
- IEEE 802.3ab 1000BASE- T Gigabit Ethernet (twisted-pair copper)
- ANSI/IEEE Std 802.3 NWay auto-negotiation
- IEEE 802.3x full-duplex flow control
- IEEE 802.1p Priority Queue
- Port-based VLAN



Data Transfer Rates
 10Mbps (half duplex)
 20Mbps (full duplex)
- Fast Ethernet:
 100Mbps (half duplex)
 200Mbps (full duplex)
- Gigabit Ethernet:
 2000Mbps (full duplex)


Network Cables

 2-pair UTP Cat. 3,4,5 (100m)
 EIA/TIA-586 100-ohm STP (100m)
- 100BASE-TX:
 UTP Cat. 5 (l00m max.)
 EIA/TIA-568 100-ohm STP (100m max.)
- 1000BASE-T:
 UTP Cat. 5 or Cat. 5e (100m max.)
 EIA/TIA-568 100-ohm STP (l00m max.)
- 1000BASE-SX:
 62.5/125um multimode fiber-optics (275m max.)
 50/125um multimode fiber-optics (550m max.)
- 1000BASE-LX:
 62.5/125um multimode fiber-optics (550m max.)
 50/125um multimode fiber-optics (550m max.)
 9um single-mode fiber-optics (5km max.)
- Long Haul:
 Single-mode fiber-optics (70km max.)

 Full/half Duplex
- Full/half duplex for 10/100Mbps ports
- Full duplex only for 1000Mbps ports

Flow Control
- IEEE 802.3x compliant flow control for full duplex
- Back pressure flow control for half duplex

Media Interface Exchange
MDI-X switch button for 1 10/100Mbps port

Twisted-pair Rx Reverse Polarity

LED Indicators
- Per 10/100Mbps port: 100Mbps speed, Link/Act
- Per Gigabit port: Link, Act
- Per device: Power

Transmission Method

Filtering Address Table
17K entries per device

MAC Address Learning
- Automatic update
- Max Age: user-configurable (1 - 5 minutes)

Packet Filtering/Forwarding Rates (half duplex)
- Ethernet: 14,880 pps per port
- Fast Ethernet: 148,810 pps per port
- Gigabit Ethernet: 1,488, 100 pps per port

Priority Queue
- 802.1p support
- 4 priority queues

RAM Buffer
- 2MB per 8 10/100Mbps ports
- 2MB per 1000Mbps port

Number of Ports per Trunk

- Up to 4 10/100Mbps ports (800Mbps at full duplex)
- Up to 2 1000Mbps ports (4000Mbps at full duplex)

Console Port
RS-232 DB-9

AC Input
100 -240 VAC, 50/60 Hz
Internal universal power supply

Power Consumption
- DES-1218: 21 watts (max.)
- DES-1226: 26 watts (max.)

40 x 40mm DC fan x 2

Operating Temperature
0° - 50° C (32° - 122° F)

Storag Temperature
- 25° - 55° C (-13° - 131° F)

5% - 95% non-condensing

441 x 207 x 44mm (17.36 x 8.15 x 1.73 inches)
19-inch rack-mount width, 1 U height

- DES-1218: 2.6 kg (5.73 lb.)
- DES-1226: 2.7 kg (5.95 Ib.)

Emission (EMI)

- FCC Class A
- CE Class A
- C-Tick
- VCCI Class A
- BSMI Class A


- UL/CUL (UL1950/CSA950)
- TUV/GS (En60950)


Order info

Ethernet/Fast Ethernet Switches
DES-1218  16 10/100Mbps ports
DES-1226  24 10/100Mbps ports

Optional Modules
DES-122G     2 1000BASE-SX fiber ports (SC connectors)
DES-122GM  2 1000BASE-SXfiberports(MT-RJ connectors)
DES-122T     2 1000BASE- T copper ports
DES-122GB  2 GBIC ports
DGS-701      1000BASE-SX GBIC FTR-8519-3A (Fin-isar), Wave length 850m, Fiber type 50um/125um 500 MHz-km multimode fiber, distance 550m max.
DGS-702      1000BASE-LX GBIC FTR-1319-3A (Fin-isar), Wave length 1310m, Fiber type 9um single-mode fiber, distance 5km max.



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