DSS-24 Auto Negotiation Switch User’s Guide Rev. 01 (March, 1999) 651DS24..
Copyright © 1999 by D-Link Systems, Inc. All rights reserved.
In North, Central, and South America: D-Link Systems Inc. 53 Discovery Drive, Irvine CA 92618 Tel. (1) 949-788-0805 Fax (1) 949-753-7033 In Europe and Israel: D-Link Europe Denmark House, Staples Corner, The Broadway, London NW9 7BW, U.K. Tel. (44)181-203-9900 Fax (44)181-203-6915 In the Middle East (except Israel), Asia, Oceania and Africa: D-Link Corporation nd No. 233-2, 2 F. Pao Chiao Road, Hsin Tien Taipei, Taiwan TEL. (886)2-916-1600 Trademarks Copyright 1999 D-Link Corporation.
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Table of Contents TABLE OF CONTENTS .......................................................................................................................V ABOUT THIS GUIDE ........................................................................................................................... 1 AUDIENCE............................................................................................................................................. 1 ORGANIZATION ...............................................
APPENDIX A ....................................................................................................................................... 25 DSS-24 TECHNICAL SPECIFICATIONS ......................................................................................... 25 Switch Specifications ...................................................................................................................... 25 Port Specifications..........................................................................
DSS-24 10/100 Auto Negotiation Switch User’s Guide About This Guide This section defines the scope of this guide and gives a summary of the contents of each chapter. It describes the features of the DSS-24 10/100 Auto Negotiation Switch. Henceforth this manual will refer to the DSS-24 10/100 Auto Negotiation Switch as the DSS-24. Information about the DSS-24 and other D-Link products is available on our web site at www.dlink.com.
DSS-24 10/100 Auto Negotiation Switch User’s Guide 1 Introduction This chapter gives a physical and functional overview of the DSS-24. The DSS24 is an unmanaged switch, designed for use on small and medium sized networks that require the ability to switch between 10 Mbps and 100 Mbps. The DSS-24 can be used in conjunction with other switches and hubs. The chapter is divided into several sections. Each section describes the features of the DSS-24.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Front Panel The DSS-24 is designed for management at a glance. The LEDs on the front panel of the DSS-24 allow you to monitor performance at a glance. It is not necessary to connect to the DSS-24 in order to check performance or verify that a port is working. There are 24 ports located on the front. Each of the ports can be used for network connection. The MDI-II Uplink port and port 1 are connected. You cannot use both ports simultaneously.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Side Panel There are two fans. The fans come on when the DSS-24 is powered on. The three holes on each side of the DSS-24 are used to attach the mounting brackets. There are heat vents located on the side opposite the fans. The fans and the heat vents help to cool the DSS-24. Always leave two inches of space around the DSS24 for air circulation.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Management The DSS-24 is an unmanaged switch. The only management options are setting port speed and duplex mode, and enabling and disabling flow control. The only way of changing the default settings is through a physical connection with an RS232 cable. The DSS-24 does not have an IP address. It can not be monitored using SNMP and RMON.
DSS-24 10/100 Auto Negotiation Switch User’s Guide 2 Installing the DSS-24 This chapter covers the following: • Unpacking the DSS-24 • Installation options and instructions • Powering on the DSS-24 Unpacking the DSS-24 Open the box and carefully unpack the DSS-24. You should have all the items on the following checklist: • DSS-24 10/100 Auto Negotiation Switch • RS-232 DCE serial cable • Two mounting brackets and six screws • Four rubber pads with adhesive backing • One 1.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Installation Options There are two options for installing the DSS-24: desktop/shelf installation or rack installation. The procedures for each are explained in the following sections. The following tools and materials may be necessary to install the DSS-24: • Screwdriver to install the brackets as needed. • Wire cutters to cut cable as needed for network connections. • Crimpers to crimp cable as needed. • RJ-45 connectors as needed.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Figure 4: Install Feet on Bottom Figure 5: Attach Feet Installing the DSS-16 and DSS-24 8
DSS-24 10/100 Auto Negotiation Switch User’s Guide Rack Installation The DSS-24 can be mounted in an EIA standard size 19 inch rack. The dimensions are: 441 mm (17.44 inches) x 235 mm (10.03 inches) x 55 mm (2.16 inches), 1.25 U. DSS-24 can be placed in a wiring closet along with other equipment. Follow these steps to install the DSS-24 on a rack: 1. Attach a mounting bracket to each side of the DSS-24 with the screws provided, see Figure 6. 2.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Figure 7: Insert into Rack Installing the DSS-16 and DSS-24 10
DSS-24 10/100 Auto Negotiation Switch User’s Guide Power On The power supply will adjust to the local power source automatically. The DSS24 may be plugged in without having any or with all LAN segment cables connected. The power plug is located at the rear of the DSS-24. Plug the cable into the wall socket and plug the other end into the DSS-24. There is no on/off switch. The DSS-24 powers on when you plug the power cord into the three pronged power connector.
DSS-24 10/100 Auto Negotiation Switch User’s Guide 3 Network Connections This chapter covers the following: • Cable Specifications • Ports • Connecting the DSS-24 to other devices This section deals with making cables and connecting the DSS-24 to other devices. It is extremely important that cables have the correct pin arrangement and that the proper cables be used when connecting to servers, switches, hubs, workstations and other devices.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Table 1: Cable Specifications Ethernet Type 10BASE-T 100-TX Network Connections Cable Requirements Category 3, 4, 5 UTP or STP Category 5 UTP or STP Maximum Length 100 m (328 feet) 100 m (328 feet) 13
DSS-24 10/100 Auto Negotiation Switch User’s Guide Figure 8: Cable Diagram Network Connections 14
DSS-24 10/100 Auto Negotiation Switch User’s Guide Ports There are three types of ports on the DSS-24: RS-232, MDI-II Uplink, and MDIX. RS-232 Port The RS-232 port, located at the rear, is used to configure the DSS-24. Follow these steps to connect the DSS-24 and a workstation or laptop: 1. Plug one end of the cable provided into the port. 2. Plug the other end into the workstation or laptop. 3.
DSS-24 10/100 Auto Negotiation Switch User’s Guide 4 LEDs The LED panel of the DSS-24, displayed in Figure 9, is designed to give you critical information at a glance. The LEDs indicate the following: • Power • Link • Activity • Collision • Speed All LEDs are described in detail. See Table 2: Per Port LEDs, to determine the meaning of each LED. Power The power LED lights when the DSS-24 is powered on. The purpose is to confirm that the DSS-24 is getting adequate power.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Power Link Act Collision Power Link/ 100Mbps/ Link/ 100Mbps/ Collision 1 2 3 13 14 15 4 5 6 7 9 17 18 19 21 10 11 12 10Mbps Collision 22 23 10Mbps 100Mbps/ 10Mbps Figure 9: DSS-24 LED Panel Table 2: Per Port LEDs LEDs LED Dark (Off) Solid Green Link/ Act/ Collision 100Mbps/ 10Mbps No Link Link Up but No Activity Port is running at 100Mbps Port is running at 10Mbps Flashing Green Transmitting or Receiving Not applicable
DSS-24 10/100 Auto Negotiation Switch User’s Guide 5 Managing the DSS-24 The DSS-24 is an unmanaged switch. You can change two values: the physical state of the ports and the flow control. You cannot make any other changes and configurations. The only way to change the configuration is to connect a workstation or laptop to the DSS-24 with an RS-232 serial cable and make the desired changes. The DSS24 is not password protected. Anyone who connects to the DSS-24 with an RS232 cable can make changes.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Panel Conventions The following panel conventions are used on the DSS-24: • The Arrow and Tab keys can be used to select items. • The Spacebar is used to toggle to different settings. • The Backspace key allows you to move backwards through the panels. • Control-R refreshes the panel. • NEXT takes you forward to the next panel. • PREV takes you back to the previous panel. • SAVE saves your changes.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Panels Each panel of the DSS-24 covers eight ports. You will have either two or three panels. There are no other menus or panels available. Each panel has four columns: Port, Physical, Flow Control and Link Status. Port Port indicates the port number. The ports are numbered on the front panel of the DSS-24. Remember that the MDI-II Uplink port and port one are connected. If you are using the uplink port, then port one is in use.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Configuration Examples The following figures give examples of possible configurations. The figures are examples. They are intended to illustrate the functions of the DSS-24. The settings displayed on your switch may be different. Remember that the DSS-24 is an unmanaged switch. The DSS-24 can be connected to the network with no configuration and it will automatically negotiate all speed and duplex settings. Changes should only be made for specific reasons.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Ports 1 and 2 have been connected to the network. The DSS-24 has auto negotiated the proper speed and duplex mode, displayed in Figure 11. No further configuration is necessary. Figure 11: Auto Negotiation The speed and duplex mode on port 1 has been manually set. Flow Control was automatically disabled when the Physical setting was changed from auto negotiation to forced mode, displayed in Figure 12.
DSS-24 10/100 Auto Negotiation Switch User’s Guide 6 Troubleshooting This troubleshooting section is intended to help you solve the most common problems on the DSS-24. Problem Solution Cables Faulty cable is the most common source of problems on Ethernet and Fast Ethernet networks. Check the cable first if you are having any problems connecting to a device. Ethernet is more fault tolerant than Fast Ethernet. If you are moving from Ethernet to Fast Ethernet, make sure the cables are pinned out correctly.
DSS-24 10/100 Auto Negotiation Switch User’s Guide default value is that all ports auto negotiate the proper speed and duplex mode. If the port has been manually configured for a particular speed and duplex mode, verify that the speed and duplex mode of the port match the speed and duplex mode of the device you are connecting to.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Appendix A DSS-24 Technical Specifications Switch Specifications • Complies with IEEE 802.3 CSMA/CD 10BASE-T Ethernet • Complies with IEEE 802.3u 100BASE-TX Fast Ethernet • NWAY Auto-negotiation for each 10/100-TX network port providing auto-detection of connected cable types, auto-sensing of full and half duplex signaling and auto-configuration • IEEE 802.
DSS-24 10/100 Auto Negotiation Switch User’s Guide General Standards: Protocol: Data Transfer Rate: Topology: Network Cables: IEEE 802.3 10BASE-T Ethernet IEEE 802.3u 100-TX Fast Ethernet ANSI/IEEE Std 802.3 NWAY™ Auto Negotiation IEEE 802.3 Frame types: Transparent IEEE 802.3 MAC layer frame size: 64-1518 CSMA/CD, Full Duplex Fast Ethernet: 100 Mbps (half duplex) 200 Mbps (full duplex) Star • 10BASE-T: 2-pair UTP Cat. 3 (100 m) 4-pair UTP Cat.
DSS-24 10/100 Auto Negotiation Switch User’s Guide AC inputs: Physical and Environmental 100 – 240 VAC, 50/60 Hz (internal universal power supply) Maximum Power Consumption: 33 watts DC fans: 2 built in 40 x 40 mm fans Operating Temperature: Storage Temperature: 0 ~ 50 degrees Celsius -25 ~ 70 degrees Celsius Humidity: 5% ~ 95% non-condensing Dimensions: 441 x 235 x 55 mm (1.25 U), 19 inch rackmount width Weight: 3 kg 6.
DSS-24 10/100 Auto Negotiation Switch User’s Guide Performance Transmission Method: Store-and-Forward RAM Buffer: 1.
Index 1 P 100Mbps/ 10Mbps..........................................16 Panel Conventions ......................................... 19 Panels............................................................ 20 Physical......................................................... 20 Port ............................................................... 20 ports .............................................................. 15 power ............................................................
