D-Link DES-1024R

24-Port 10/100Mbps Ethernet Switch

Manual

Rev. 2.00 2907ESW724T6000
Building Networks for People

C ONTENTS

About This Guide..1
PURPOSE...1 TERMS/USAGE....1 OVERVIEW OF THIS MANUAL...1

Introduction...2

FAST ETHERNET TECHNOLOGY..2 SWITCHING TECHNOLOGY...3 FEATURES...4

Unpacking and Setup..5

UNPACKING...5 SETUP....5 DESKTOP INSTALLATION...6 RACK MOUNTING....7
Identifying External Components..8
FRONT PANEL....8 REAR PANEL...9
Technical Specifications..10

A BOUT T HIS G UIDE

Congratulations on your purchase of the DES-1024R 24-port 10/100Mbps Fast Ethernet Switch. This device integrates 100Mbps Fast Ethernet and 10Mbps Ethernet network capabilities into one highly flexible solution.

Purpose

This guide discusses how to install your DES-1024R.

Terms/Usage

In this guide, the term Switch (first letter upper case) refers to your 24-port 10/100Mbps Fast Ethernet Switch, and switch (first letter lower case) refers to other Ethernet switches.

Overview of this Manual

Introduction. Describes the Switch and its features. Unpacking and Installation. Helps you get started with the basic installation of the Switch. Identifying External Components. Describes the front panel, rear panel and LED indicators of the Switch. Technical Specifications. Lists the technical (general, physical and environmental, and performance) specifications of the Switch.

I NTRODUCTION

This chapter describes the features of the DES-1024R and some background information about Ethernet/Fast Ethernet switching technology.

Fast Ethernet Technology

Ethernet, along with its speedier counterpart Fast Ethernet, is the most popular networking standard in use today. 100BaseT Fast Ethernet is an extension of the 10BaseT Ethernet standard, designed to raise the data transmission capacity of 10BaseT from 10Mbits/sec to 100Mbits/sec. An important strategy incorporated by 100BaseT is its use of the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol - which is the same protocol that 10BaseT uses - because of its ability to work with several different types of cable, including basic twisted-pair wiring. Both of these features play an important role in network considerations, and they make 100BaseT an attractive migration path for those networks based on 10BaseT. Since the 100Mbps Fast Ethernet is compatible with all other 10Mbps Ethernet environments, it provides a straightforward upgrade and takes advantage of the existing investment in hardware, software, and personnel training.

Switching Technology

Switching is a cost-effective way of increasing the total network capacity available to users on a LAN. If an Ethernet network begins to display symptoms of congestion, low throughput, slow response times, and high rates of collision, installing a switch to a network can preserve much or all of the existing network's cabling and workstation interface card infrastructure, while still greatly enhancing the throughput for users. A switch is a viable solution even if demanding applications, such as multimedia production and video conferencing, are on the horizon. The most promising techniques, as well as the best return on investment, could well consist of installing the right mixture of Ethernet switches. A switch increases capacity and decreases network loading by dividing a local area network into different LAN segments. Dividing a LAN into multiple segments is one of the most common ways of increasing available bandwidth. If segmented correctly, most network traffic will remain within a single segment, enjoying the full-line speed bandwidth of that segment. Switches provide full-line speed and dedicated bandwidth for all connections. This is in contrast to hubs, which use the traditional shared networking topology, where the connected nodes contend for the same network bandwidth. When two switching nodes are communicating, they are connected with a dedicated channel between them, so there is no contention for network bandwidth with other nodes. As a result, the switch reduces considerably, the likelihood of traffic congestion. For Ethernet networks, a switch is an effective way of eliminating the problem of chaining hubs beyond the two-repeater limit. A switch can be used to split parts of the network into different collision domains, making it possible to expand your Ethernet network beyond the 205-meter network diameter limit for 100BASE-TX networks. Switches supporting both traditional 10Mbps Ethernet, 100Mbps Fast Ethernet, 1000Mbps Gigabit Ethernet are also ideal for bridging between existing 10Mbps networks, 100Mbps networks, and new 1000Mbps networks. 3

Switching LAN technology is a marked improvement over the previous generation of network hubs and bridges, which were characterized by higher latencies. Routers have also been used to segment local area networks, but the cost of a router, the setup and maintenance required, make routers relatively impractical. Today switches are an ideal solution to most kinds of local area network congestion problems.

Features

The DES-1024R is a high-performance switch designed specifically for environments where traffic on the network and the number of users increase continuously.
24-port 10/100BASE Ethernet Switch with RJ-45 connectors Supports Auto-negotiation of speed and duplex modes for each port Supports Auto-MDI/MDI-X on each port, eliminating the need for cross over cables or uplink ports Wire-speed reception and transmission Store-and-Forward switching method Integrated address Look-Up Engine, supports 8K MAC addresses Supports 160KBytes RAM for data buffering Front-panel diagnostic LEDs IEEE 802.3x flow control for full-duplex Back pressure flow control for half-duplex

U NPACKING

Unpacking

S ETUP

Open the shipping cartons of the DES-1024R and carefully unpack its contents. The carton should contain the following items:
One DES-1024R 24-port 10/100Mbps Fast Ethernet Switch One AC power cord Four rubber feet to be used for shock cushioning Screws and two mounting brackets This manual
If any item is missing or damaged, please contact your local reseller for replacement.
The setup of the DES-1024R can be performed by using the following steps: 1. 2. 3. 4. 5. The surface must support at least 11 lbs (5 kg). The power outlet should be within 6 feet (1.42 meters) of the device. Visually inspect the power cord and see that it is secured fully to the AC power outlet. Do not cover the ventilation holes on the sides of the Switch, and make sure there is adequate ventilation around it. Do not place heavy objects on the Switch.

Desktop Installation

When installing the DES-1024R on a desktop or shelf, the rubber feet included with the device should be attached first, to minimize scratching or scarring of the surface on which the Switch is placed. Attach these cushioning feet on the bottom at each corner of the device. Allow enough ventilation space between the device and the objects around it.
Fast Ethernet Switch installed on a Desktop or Shelf

Rack Mounting

The DES-1024R can be mounted in an EIA standard-size 19-inch rack, in a wiring closet with other equipment. Attach the mounting brackets on each side of the Switchs front panel (as shown in the illustration below), and secure them with the screws provided.

Attaching the mounting brackets to the Switch
Installing the Switch in an equipment rack
I DENTIFYING E XTERNAL C OMPONENTS

Front Panel

The figure below shows the front panels of the switch.
DES-1024R 24-port 10/100Mbps Ethernet Switch

LED Indicator Panel

Refer to the next chapter for detailed information about each of the switchs LED indicators.
Power (PWR) This green LED indicator illuminates when the switch is receiving power; otherwise, it is off. Link / Activity This green LED indicator illuminates when the port is connected to a Fast Ethernet or Ethernet station; the indicator blinks when transmitting or receiving data.
100Mbps (green) This green LED indicator illuminates when the port is connected to a 100Mbps Fast Ethernet station. 10Mbps (off) The LED does not illuminate when the port is connected to 10Mbps Ethernet station.

Twisted-Pair Ports

These ports support automatic MDI/MDIX crossover detection function providing true plug and play connectivity, which eliminates the need for crossover cables or uplink ports. Any port can be simply plugged to a server, workstation, or hub using the usual straight-through, twisted-pair cable.

Rear Panel

AC Power Connector
T ECHNICAL S PECIFICATIONS

General

Standards Protocol Data Transfer Rate Topology Network Cables Number of Ports IEEE 802.3 10BASE-T Ethernet IEEE 802.3u 100BASE-TX Fast Ethernet CSMA/CD Ethernet: 10Mbps (half duplex), 20Mbps (full-duplex) Fast Ethernet: 100Mbps (half duplex), 200Mbps (full- duplex) Star 10BASET: 2-pair UTP Cat. 3,4,5, EIA/TIA- 568 100-ohm STP 100BASE-TX: 2-pair UTP Cat. 5, EIA/TIA-568 100-ohm STP 24 x 10/100Mbps Auto-MDI/MDIX ports
Physical and Environmental
AC inputs Power Consumption Temperature Humidity Dimensions 100 to 240 VAC, 50 or 60 Hz internal universal power supply 9.5 watts. Operating: 0 ~ 40 C (32 to 104 F) Storage: -10 ~ 70 C (14 to 158 F) Operating: 10% ~ 90% RH, Non-condensing Storage: 5% ~ 90% RH, Non-condensing Width: 17.32 in. (440mm) Depth: 5.51 in. (140mm) Height: 1.73 in. (44mm) FCC Class A, ICEC-003 Class A, CE Mark Class A, VCCI Class A cUL

EMI: Safety

Performance
Transmits Method: RAM Buffer: Filtering Address Table: Packet Filtering/ Forwarding Rate: MAC Address Learning: Store-and-forward 160KBytes per device 8K entries per device 10Mbps Ethernet: 14,880/pps 100Mbps Fast Ethernet: 148,800/pps Automatic update

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10/100Mbps Unmanaged Switches

DES-1016R+ DES-1024R+

Top: DES-1016R+ switch with 16 auto-sensing 10/100Mbps ports. Bottom: DES-1024R+ switch with 24 auto-sensing 10/100Mbps ports. Each switch is equipped with an open slot (on the front) for you to fit in an optional 2-port 100Mbps Fast Ethernet fiber module.
10/100Mbps Switches for Workgroups
These unmanaged 10/100Mbps switches are designed to enhance workgroup performance while providing a high level of flexibility. Powerful yet easy to use, these devices allow users to simply plug any port to either a 10Mbps or 100Mbps network to multiply bandwidths, boost response time and satisfy heavy load demands. Choices of 16 or 24 10/100Mbps Ports Two choices of switches are available: one with 16 10/100Mbps ports, the other with 24 10/100Mbps ports. These ports detect the network speed and autonegotiate between 100BASE-TX and 10BASE-T, as well as full- and half-duplex. Auto-adjustment of MDI/MDIX Cross Over All 10/100Mbps ports auto-adjust MDI/MDIX twistedpair 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 2km long. Flow Control Protects Against Data 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 operation minimizes 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. 16 or 24 10/100Mbps ports
Key Features 1 expansion slot for 2 optional 100Mbps fiber ports Full/half duplex support for each port Auto-learning of network configuration IEEE 802.3x flow control in full duplex mode for protection against data loss Back pressure in half duplex mode Auto-adjustment of MDI/MDIX cross over for each port Auto-correction of twisted-pair polarity reverse RAM buffer dynamically allocated for each port

DES-1016R+/1024R+

Technical Specifications

General

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-568 100-ohm STP (100 m) - 100BASE-TX: 2-pair UTP Cat. 5 (100 m) EIA/TIA-568 100-ohm STP (100 m) Number of Built-in Ports - DES-1016R+: 10/100Mbps port x 16 - DES-1024R+: 10/100Mbps port x 24 - DES-102F: 100BASE-FX port x 2 Media Interface Exchange Auto-negotiation of MDI-II/MDI-X for all 10/100Mbps ports

ERAL COM ED

Ventilation - DES-1016R+: 12V - 0.09A DC fan x 1 - DES-1024R+: 12V - 0.09A DC fan x 1 Operating Temperature 0 - 50 C (32 - 122 F) Storage Temperature -30 - 60 C (-22 - 140 F) Humidity 5% - 95% non-condensing Dimensions 441 x 207 x 44 mm (17.4 x 8.15 x 1.732 inches) 19-inch rack-mount width, 1 U height Weight - DES-1016R+: 2.55 kg (5.62 lb.), 2.6kg (with DES-102F module) - DES-1024R+: 2.65 kg (5.84 lb.), 2.7 kg (with DES-102F module) Emission (EMI) - FCC Class A - CE Class A - C-Tick - VCCI Class A - BSMI Class A Safety - UL (UL1950) - CSA (CSA950) - TUV/GS (EN60950)
Twisted-pair Rx Reverse Polarity Auto-correction LED Report Per device: - Power Per 10/100Mbps port: - 100Mbps speeds - Link/activity

CA UNI TION M

M M I SS IO

Performance

Transmission Method Store-and-forward MAC Address Table 4K entries per device Packet Filtering Rates - Ethernet: 14,880 pps per port (half-duplex) - Fast Ethernet: 148,800 pps per port (half-duplex) Packet Forwarding Rates - Ethernet: 14,880 pps per port (half-duplex) - Fast Ethernet: 148,800 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
Specifications subject to change without prior notice. D-Link is a registered trademark of DLink Corporation/D-Link System Inc. All other trademarks belong to their proprietors.

Ordering Information

Ethernet/Fast Ethernet Switches DES-1016R+ 16 10/100Mbps ports DES-1024R+ 24 10/100Mbps ports Optional Module DES-102F 2 100Mbps Fast Ethernet fiber ports (SC connectors)
Physical & Environmental
AC Input 100 - 240 VAC, 50/60 Hz Internal universal power supply Power Consumption - DES-1016+: 39 watts (max.) - DES-1024+: 39 watts (max.)

RECYCLABLE

Rev. 01 (Mar. 2001) Printed in Taiwan 7ES1016R+010
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