Page 2 - Installation Manual
Installation Manual Fast EtherHub-12s Smart Fast Ethernet Hub with 12 100BASE-TX Ports
Page 4 - Package Contents; Package Checklist; Four rubber foot pads; and return it to Accton Technology Corporation.
Package Contents i Package Contents Carefully unpack the contents of the package and verify them against thechecklist given below. Package Checklist æ Fast EtherHub-12s (Model No. EH3012-TX) æ AC power cord (optional) æ Four rubber foot pads æ Installation manual æ Warranty registration card Please ...
Page 5 - Quick Installation; easy reach of an electrical outlet.
Quick Installation iii Quick Installation The Fast EtherHub-12s is a Class II repeater. It contains 12 100BASE-TX FastEthernet ports. The smart design built into the front display panel provides afriendly interface that simplifies installation and network troubleshooting. Ifyou are already familiar ...
Page 6 - Verify network communications by ensuring that -; you have made all the necessary connections
Fast EtherHub-12s User’s Guide iv Quick Installation first calculate the maximum length permitted between each pair of end nodesas described in Chapter 2 under the section on Precise Cable Length Budgeting . 5. Verify network communications by ensuring that - • you have made all the necessary connec...
Page 7 - About this Guide; This manual covers the following topics:; Installing a Fast EtherHub and making basic network connections.; Shows sample network configurations for a local area network.; Detailed description of indicator panel and ports.
About this Guide v About this Guide This guide is designed for the experienced network installer. It describes howto install and operate Accton’s Fast EtherHub-12s. After reading this manual,you should be able to use the front display panel and configure options tomanage all your network connections...
Page 10 - List of Figures
Fast EtherHub-12s User’s Guide Contents ix Limited Warranty .......................................................................................................E-4 Customer Remedies ..............................................................................................E-4 Return Process .....
Page 11 - Chapter 1: Product Overview; Introduction to Fast Ethernet; indicator panel includes Utilization and Collision rate LEDs, as
Product Overview 1-1 Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbps Ethernet has served well for past generations of 286 and386 machines performing simple file transfers. However, with the inevitablegrowth in corporate network size and the introduction of fully-functional...
Page 12 - Basic Features; Transmits data at 100 Mbps for demanding applications
Fast EtherHub-12s User’s Guide 1-2 Product Overview Basic Features • Transmits data at 100 Mbps for demanding applications • Conforms to the IEEE 802.3u repeater specification for 100BASE-TX • Provides 12 RJ-45 100BASE-TX station ports (using MDI-X wiring) • Port 12 can serve as an MDI-X station por...
Page 14 - Chapter 2: Installing the System; Pre-Installation Requirements
Installing the System 2-1 Chapter 2: Installing the System This chapter provides information on installing the Fast EtherHub-12s, estab-lishing network connections, and configuring the system. You may install thishub on any level surface (e.g., a table or shelf) or in a standard EIA equipmentrack. H...
Page 15 - Connecting the Hub System; Making a Connection via an MDI-X Station Port; Category 5 cable for all connections.
Fast EtherHub-12s User’s Guide 2-2 Installing the System Connecting the Hub System This hub is a Fast Ethernet repeater for 100BASE-TX networks. TheEtherHub-12s has 12 RJ-45 station ports, of which Port 12 can serve as either astation port or a daisy-chain port (depending on the port’s switch settin...
Page 16 - Making a Connection via the MDI Daisy-Chain Port; daisy-chain port. When connecting to this port, remember to set the; Distance Limit for Fast Ethernet Cabling
Fast EtherHub-12s User’s Guide Installing the System 2-3 Making a Connection via the MDI Daisy-Chain Port 1. To make a direct connection to another compatible repeater or switch, use the 12MDI daisy-chain port. When connecting to this port, remember to set the port selection switch MDI . 2. Prepare ...
Page 18 - Providing Power to the EtherHub; Check the LED marked; on the front panel to see if it is on. The unit
Fast EtherHub-12s User’s Guide Installing the System 2-5 connected hub when using twisted-pair cabling. However, when linking one ormore Fast Ethernet repeaters together (i.e., in the same collision domain), theoverall length of cable used between any two nodes should not exceed thelimits outlined i...
Page 19 - Verifying Port Status; Indicates traffic traversing the port.; Verifying System Operation
Fast EtherHub-12s User’s Guide 2-6 Installing the System Verifying Port Status Check each connection by viewing the port status indicators listed below. (Fora more detailed description of these indicators, refer to Chapter 4.) Link Indicates that the port has established a valid network connection. ...
Page 20 - If you still can’t resolve the problem, please refer to
Fast EtherHub-12s User’s Guide Installing the System 2-7 • Test the adapter for an attached workstation by trying it in another computerthat has been successfully connected to the network. If you still can’t resolve the problem, please refer to Troubleshooting in Appendix A.
Page 21 - Chapter 3: Configuring the Network; Connecting Multiple Hubs
Configuring the Network 3-1 Chapter 3: Configuring the Network The Fast EtherHub-12s allows great flexibility in configuring your network.You can use it in a stand-alone or multiple hub configuration. Some of thecommon applications for this Fast EtherHub are described in this chapter. Stand-Alone Th...
Page 23 - Precise Guidelines for Configuring Multiple Hubs; in Chapter 2. This formula stated that the
Fast EtherHub-12s User’s Guide Configuring the Network 3-3 Precise Guidelines for Configuring Multiple Hubs A detailed formula for calculating maximum cable length was provided in thesection on Precise Cable Length Budgeting in Chapter 2. This formula stated that the maximum length of cabling that c...
Page 25 - Chapter 4: Hardware Reference; Indicators; The SmartWatch
Hardware Reference 4-1 Chapter 4: Hardware Reference Before connecting any network device to this hub, please review Chapter 2 forinformation on system installation and Chapter 3 for a brief look at commonnetwork architectures. This chapter describes the hardware features of the FastEtherHub-12s. Fo...
Page 26 - Red; status; Green; indicator
Fast EtherHub-12s User’s Guide 4-2 Hardware Reference The front panel array provides indicators that show the utilization of networkbandwidth and indicate the status of port connections. It includes port statusindicators and a statistical display for network traffic as shown below. Figure 4.2 Indica...
Page 27 - ) The statistical indicators; show the percentage of packet
Fast EtherHub-12s User’s Guide Hardware Reference 4-3 Statistical Display for System Performance Utilization - ( Utilization% ) The statistical indicators show the percentage of valid data passing through all ports compared to overall network bandwidth (updated every0.5 seconds). There are 5 LEDs re...
Page 28 - Shows if the port has been isolated from the network; Indicates a valid network connection associated with the port.
Fast EtherHub-12s User’s Guide 4-4 Hardware Reference Note: If the hub displays a high collision rate, check to see if any of the connecteddevices are malfunctioning or if a loop has been formed in your network connections.Otherwise, you may need to reconfigure your network to balance the traffic lo...
Page 29 - Indicates traffic entering the port.; category 5 straight-through twisted-pair cable
Fast EtherHub-12s User’s Guide Hardware Reference 4-5 Troubleshooting : If the Link LED does not light up when a device is connected to its corre- sponding port, check that both the hub and connected device are powered on. Be surethe cable length for all devices connected to the hub are within the l...
Page 30 - The rear panel on the hub includes a full-range power socket.; Power Socket
Fast EtherHub-12s User’s Guide 4-6 Hardware Reference Rear Panel The rear panel on the hub includes a full-range power socket. Figure 4.3 Rear Panel Power Socket The power socket accepts AC power from 100 to 240V at 50 to 60Hz. The unitis equipped with a universal full-range power source.
Page 31 - Appendix A: Troubleshooting; Diagnosing Hub Indicators
Troubleshooting A-1 Appendix A: Troubleshooting Diagnosing Hub Indicators This Fast EtherHub can be easily monitored through its comprehensive panelindicators. These indicators assist the network manager in identifyingproblems the hub may encounter. This section describes common problemsyou may enco...
Page 32 - System Diagnostics; Power and Cooling Problems; securely seated in the required ports. Use 100
Fast EtherHub-12s User’s Guide A-2 Troubleshooting System Diagnostics Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in, youmay have a problem with the power outlet, power cord, or internal powersupply as explained in the previous section. However, ...
Page 33 - Physical Configuration
Fast EtherHub-12s User’s Guide Troubleshooting A-3 External Adapters Make sure the network interface hardware and software drivers for the attacheddevices are function properly. Check the adapter cards and associated driversused in any attached workstation or server. Physical Configuration If proble...
Page 34 - Port and Cable Assignments
Cable and Port Assignments B-1 Appendix B: Port and Cable Assignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) Pin MDI-X Assignment (Station Port 1 ~ 12) MDI Assignment (Cascade Port 12) 1 Input Receive Data + Output Transmit Data + 2 Input Receive Data - Output Transmit Data - 3 Outp...
Page 35 - Appendix C: Product Specifications
Product Specifications C-1 Appendix C: Product Specifications Transmission Technique Baseband Topology Star or Tree Access Method CSMA/CD, 100Mbps Standards Conformance IEEE 802.3u 100BASE-TX Class II Repeater Media Supported Unshielded or shielded twisted-pair cable(100 W Category 5 STP/UTP) Interf...
Page 36 - Regulatory Standards Compliance; EMI Certification; FCC Class B Certification
Regulatory Standards Compliance D-1 Appendix D: Regulatory Standards Compliance EMI Certification FCC Class B Certification Accton Technology CorporationModel Numbers: EH3012-TXFCC ID: HED3012EHLCT-TX This device complies with Part 15 of the FCC Rules. Operation is subject to thefollowing conditions...
Page 38 - European Community Immunity Requirements
Fast EtherHub-12s User’s Guide Regulatory Standards Compliance D-3 Read the instructions for correct handling. European Community Immunity Requirements This unit was tested and found to comply with the Class B limits of EN55022 (CISPR22) and the immunity requirements of EN50082-1. CE Mark Declaratio...
Page 39 - Safety Compliance; Underwriters Laboratories Inc.
Fast EtherHub-12s User’s Guide D-4 Regulatory Standards Compliance Safety Compliance Underwriters Laboratories Inc. Important! Before making connections, make sure you have the correct Cord Set. Check it (read the label on the cable) against the following specification list. Operating Voltage Cord S...
Page 40 - Sicherheitshinweise
Fast EtherHub-12s User’s Guide Regulatory Standards Compliance D-5 Sicherheitshinweise 1. Die Steckdose muß sich in der Nähe des Gerätes befinden und leicht zugänglich sein.2. Zum Reinigen den Stecker aus der Steckdose ziehen. Beim Reinigen keine Flüssigreiniger oder Sprays verwenden, sondern ein an...
Page 41 - Product Registration
Product Support Services E-1 Appendix E: Product Support Services Product Registration Fill in the Owner Registration Card and mail it to Accton Technology Corporation.Accton will keep your record and inform you of any new Accton unit developments. Problem Report If problems occur during unit operat...
Page 43 - Technical Support
Fast EtherHub-12s User’s Guide Product Support Services E-3 Technical Support Your dealer or installer is the person who understands your network and Accton units.If neither is available to help you, Accton technical support engineers are available byFAX, mail or phone. • Send your technical questio...
Page 44 - Limited Warranty; Customer Remedies
Fast EtherHub-12s User’s Guide E-4 Product Support Services Limited Warranty Accton warrants to the original owner that the product delivered in this package will be free fromdefects in material and workmanship for the lifetime of the product. For the warranty to apply, youmust register your purchas...
Page 45 - Return Process
Fast EtherHub-12s User’s Guide Product Support Services E-5 Return Process Before you may return any Accton product to Accton, you must request an RMA number by calling,FAXing or writing Accton’s Service Department at the address listed below. If you ship the product,you must assume the risk of dama...
Page 46 - Accton Offices
Fast EtherHub-12s User’s Guide E-6 Product Support Services Accton Offices Accton Technology CorporationInternational Headquarters,No. 1 Creation Rd. III,Science-based Industrial Park,Hsinchu 300, Taiwan, R.O.C.Hsinchu: Phone: 886-3-5770-270, Fax: 886-3-5770-267, 886-3-5775-541 BBS: 886-3-5770-654Ta...
Page 47 - Glossary
Glossary 1 Glossary 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using twisted-pair cable (100 W Cat. 5 STP or UTP ) . The maximum length of cable for a point-to-point connection is 100 meters. Collision A condition in which two packets transmitted over a medium interfere with each other.T...
Page 48 - Fast Ethernet
Fast EtherHub-12s User’s Guide 2 Glossary Fast Ethernet 100 Mbps network communication system based on Ethernet and the CSMA/CD accessmethod. IEEE 802.3 Standard Standard for the physical and electrical connections in local area networks developed bythe IEEE. The IEEE 802.3u standard covers these sa...
Page 49 - Star Topology
Fast EtherHub-12s User’s Guide Glossary 3 Shielded Twisted-Pair (STP) 100 W Category 5 twisted-pair wire covered with an external aluminum-foil or woven- copper shield designed to reduce excessive noise pick up or radiation. The STP cablerefered to in this manual is also sometimes called screened tw...
Page 50 - Index
Index 1 Index A Accton's Fast EtherHub-12s • 1-1Automatic Partitioning • 1-3Automatic Polarity Detection • 1-3 C Cable Length Precise Cable Length Budgeting • 2-4Simplified Cable Length Constraints • 2-4 Certification • C-1Class II Repeater • 2-5, 3-3Configuring the Network • 3-1Connecting Multiple ...
