DES-1024REOL EOS

Fast Ethernet Switch 24-port

Tanımlama

The DES-1024R+ is an unmanaged 10/100Mbps switch designed to enhance workgroup performance while providing a high level of flexibility. Powerful yet easy to use, this device allows users to simply plug any port to either a 10Mbps or 100Mbps network to multiply bandwidths, boost response time and satisfy heavy load demands.

24Auto-sensing 10/100Mbps Ports
The switch comes with 24 10/100Mbps ports, allowing a small workgroup to flexibly integrate to Ethernet and Fast Ethernet. These intelligent ports detect the network speed and auto-negotiate between 100BASE-TX and 10BASE-T, aswell as between full and half-duplex.

Auto-adjustment ofMDI/MDIXCrossOver
All 10/100Mbps ports auto-adjust MDI/MDIX twisted pair cable cross-over, eliminating the need for crossover cables or uplink buttons. You simply plug any port to a server, a workstation or a hub, using the usual straight-through twisted-pair cable. The port will autosense the attached device type and adjust the Tx, Rx pin assignments accordingly before transmitting and receiving data.

Optional 100Mbps Fiber Ports
An open slot is provided on the front panel to let you install an optional Fast Ethernet fiber module. This module provides 2 100Mbps fiber ports for 2 server connections or switch-to-switch cascading over the reliable fiber cables,which can be up to 2kmlong.

Flow Control ProtectsAgainstData Loss
Using flow control (in full duplex and applicable to all 10/100Mbps ports), the switch monitors the buffer status of each port. During peak usage, if the buffer fills to capacity, the switch detects this and signals to the attached node to delay sending new data until the switch can accept it. This operationminimizes the chance of any buffer overrun where incoming data overwrites the current data that has not been completely flushed out of the buffer. This function works with flow control supported Fast Ethernet adapters (installed in servers) connected to the switch in dedicated bandwidth configuration. It can also be applied to switch-to-switch cascading.

Easy Expansion
Cascading 2 switches together to expand the network using the twisted-pair ports is easy. As all 10/100Mbps ports support auto-negotiation of MDI/MDIX twisted-pair cable cross-over, you simply connect 2 switches together without having to find a cross-over cable or to make sure the ports are uplink ports. At 200Mbps full-duplex speed, all ports provide a fast switch-to-switch dedicated bandwidth. 

Genel Özellikler

Standards
- IEEE 802.3 10BASE-T Ethernet
- IEEE 802.3u 100BASE-TX Fast Ethernet
- IEEE 802.3u 100BASE-FX Fast Ethernet
- ANSI/IEEE 802.3 NWay auto-negotiation
- IEEE 802.3x Flow Control

Protocol
- CSMA/CD

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

Topology
- Star

Network Cables
- 10BASE-T:
  2-pair UTP Cat. 3, 4, 5 (100 m)
  EIA/TIA-586 100-ohm STP (100 m)
- 100BASE-TX:
  2-pair UTP Cat. 5 (100 m)
  EIA/TIA-568 100-ohm STP (100m max.)
- 100BASE-FX:
  Multi-mode (62.5/125 um or  50/125 um fiber cabling with  SC connector)

Number of Built-in Ports
- 10/100Mbps port x 24

Media Interface Exchange
- Auto-negotiation of MDI-II/MDI-X for all 10/100Mbps ports

Twisted-pair Rx Reverse Polarity
- Auto-correction

LED Report
- Per device: Power
- Per 10/100Mbps port: Link/Activity, 100Mbps speed

Per Gigabit port:
- Link/Activity
- 10/100Mbps speed

Performance
Transmission Method

- Store-and-forward

Packet Filtering Rates
- Ethernet: 14,880 pps per port (half-duplex)
- Fast Ethernet: 148,810 pps per port (half-duplex)

Packet Forwarding Rates
- Ethernet: 14,880 pps per port (half-duplex)
- Fast Ethernet: 148,810 pps per port (half-duplex)

RAM Buffer
- 256KB per 8 ports

Flow Control
- IEEE 802.3x flow control per 10/100Mbps port in full Duplex
- Back pressure per 10/100Mbps port in half duplex

Çözümler

Sipariş Bilgisi

DES-1024R  Fast Ethernet Switch 22 10/100BASE-TX ports, 2 1000BASE-T ports

Görseller

DES-1024R/A
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