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Related Manuals for Accton Technology Fast EtherHub-12s
Summary of Contents for Accton Technology Fast EtherHub-12s
- Page 1 Fast EtherHub-12s...
- Page 2 Installation Manual Fast EtherHub-12s Smart Fast Ethernet Hub with 12 100BASE-TX Ports...
- Page 3 BBS: 408-452-8828 BBS: 886-3-5770-654 FAST FAX: 408-452-8811 Internet: support@accton.com.tw Accton, EtherHub and SmartWatch are trademarks or registered trademarks of Accton Technology Corporation. Other trademarks or brand names mentioned herein are trademarks or registered trademarks of their respective companies. EH3012-TX 150114-101...
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Page 4: Package Contents
To qualify for product updates and product warranty registration, fill in the Owner Registration Card and return it to Accton Technology Corporation. Package Contents... -
Page 5: Quick Installation
Quick Installation The Fast EtherHub-12s is a Class II repeater. It contains 12 100BASE-TX Fast Ethernet ports. The smart design built into the front display panel provides a friendly interface that simplifies installation and network troubleshooting. If you are already familiar with basic network operations, you should be able to install this hub as described below: 1. - Page 6 Fast EtherHub-12s User’s Guide first calculate the maximum length permitted between each pair of end nodes as 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 connections you can access any connected resources the hub’s indicators are functioning properly If you encounter any problems in installing the Fast EtherHub, refer to Chapter 2...
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Page 7: About This Guide
About this Guide This guide is designed for the experienced network installer. It describes how to 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 to manage all your network connections. -
Page 8: Table Of Contents
Contents Chapter 1: Product Overview ..........1-1 Introduction to Fast Ethernet ..................1-1 Accton’s Fast EtherHub-12s..................1-1 Basic Features ......................1-2 Chapter 2: Installing the System..........2-1 Pre-Installation Requirements ...................2-1 Connecting the Hub System ..................2-2 Making a Connection via an MDI-X Station Port ..........2-2 Making a Connection via the MDI Daisy-Chain Port...........2-3 Simplified Cable Length Constraints ..............2-4 Precise Cable Length Budgeting..............2-4... - Page 9 Fast EtherHub-12s User’s Guide Appendix A: Troubleshooting..........A-1 Diagnosing Hub Indicators..................A-1 System Diagnostics ....................A-2 Power and Cooling Problems ................A-2 Installation ......................A-2 Physical Configuration ..................A-3 Hub Integrity ......................A-3 Appendix B: Port and Cable Assignments......B-1 RJ-45 Port .......................B-1 Appendix C: Specifications............ C-1 Product Specifications....................C-1 Appendix D: Regulatory Standards Compliance....
- Page 10 Fast EtherHub-12s User’s Guide Limited Warranty .......................E-4 Customer Remedies....................E-4 Return Process......................E-5 Accton Offices......................E-6 Ordering Information ....................E-6 Glossary Index List of Figures Figure 3.1 Stand-Alone Configuration ..............3-1 Figure 3.2 Multiple Hub Configuration Using the Daisy-Chain Port ......3-2 Figure 3.3 Cabling Limits for Multiple Hub Configuration........3-4 Figure 4.1 Front Panel .....................4-1 Figure 4.2 Indicators ....................4-2 Figure 4.3 Rear Panel ....................4-6...
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Page 11: Chapter 1: Product Overview
Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbps Ethernet has served well for past generations of 286 and 386 machines performing simple file transfers. However, with the inevitable growth in corporate network size and the introduction of fully-functional 32-bit PC architectures, and operating systems running complex applications, 10 Mbps Ethernet has become a serious bottleneck. -
Page 12: Basic Features
Fast EtherHub-12s User’s Guide 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 port (for connection to network devices such as workstations or servers) or as an MDI daisy-chain port (for connection to network devices such as hubs or switches), eliminating the need for crossover cables... - Page 13 Fast EtherHub-12s User’s Guide With automatic partitioning and reconnection, any port is automatically isolated if excessive collisions occur on it. When the condition is corrected, the port is automatically reconnected. With the jabber lock-up function, the hub automatically stops transmission of abnormal Ethernet frames that may cause data loss for all network users.
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Page 14: Chapter 2: Installing The System
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 this hub on any level surface (e.g., a table or shelf) or in a standard EIA equipment rack. -
Page 15: Connecting The Hub System
Fast EtherHub-12s User’s Guide Connecting the Hub System This hub is a Fast Ethernet repeater for 100BASE-TX networks. The EtherHub-12s has 12 RJ-45 station ports, of which Port 12 can serve as either a station port or a daisy-chain port (depending on the port’s switch setting). The station ports allow you to make connections to devices such as a workstation, server or router. -
Page 16: Making A Connection Via The Mdi Daisy-Chain Port
Fast EtherHub-12s User’s Guide Making a Connection via the MDI Daisy-Chain Port 1. To make a direct connection to another compatible repeater or switch, use the daisy-chain port. When connecting to this port, remember to set the 12MDI port selection switch 2. -
Page 17: Simplified Cable Length Constraints
Fast EtherHub-12s User’s Guide Simplified Cable Length Constraints The Fast EtherHub-12s is a Class II repeater. IEEE recommends that Class II hubs be limited to a cascade of two hubs. The simplest rule is that workstation connections be limited to 100 meters for twisted-pair cabling, and that interhub cabling be limited to 5 meters. -
Page 18: Providing Power To The Etherhub
Fast EtherHub-12s User’s Guide connected hub when using twisted-pair cabling. However, when linking one or more Fast Ethernet repeaters together (i.e., in the same collision domain), the overall length of cable used between any two nodes should not exceed the limits outlined in the IEEE 802.3u standard. -
Page 19: Verifying Port Status
Fast EtherHub-12s User’s Guide Verifying Port Status Check each connection by viewing the port status indicators listed below. (For a more detailed description of these indicators, refer to Chapter 4.) Indicates that the port has established a valid network connection. Link Traffic Indicates traffic traversing the port. - Page 20 Fast EtherHub-12s User’s Guide Test the adapter for an attached workstation by trying it in another computer that has been successfully connected to the network. If you still can’t resolve the problem, please refer to in Appendix A. Troubleshooting Installing the System...
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Page 21: Chapter 3: Configuring The Network
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 the common applications for this Fast EtherHub are described in this chapter. Stand-Alone This hub can be used in a simple stand-alone configuration as illustrated below. -
Page 22: Using The Rj-45 Daisy-Chain Port
Fast EtherHub-12s User’s Guide Using the RJ-45 Daisy-Chain Port You can easily connect to another hub via the MDI daisy-chain port (Port 12). When using as described in Chapter 2, the inter- Simplied Cable Length Constraints hub cable length is 5 meters. Figure 3-2 shows a sample configuration. Figure 3-2 Multiple Hub Configuration Using the Daisy-Chain Port Configuring the Network... -
Page 23: Precies Guidelines For Configuring Multiple Hubs
Fast EtherHub-12s User’s Guide Precise Guidelines for Configuring Multiple Hubs A detailed formula for calculating maximum cable length was provided in the section on in Chapter 2. This formula stated that the Precise Cable Length Budgeting maximum length of cabling that can be run from end-node to end-node is: 367m (repeater equivalent length) + (length of CAT-5 twisted-pair cable) For the daisy chain of three hubs shown in Figure 3-3, communications must... -
Page 24: Figure 3.3 Cabling Limits For Multiple Hub Configuration
Fast EtherHub-12s User’s Guide Figure 3-3 Cabling Limits for Multiple Hub Configuration Notes: 1. The maximum length for each cable must be determined by calculations for the longest path (i.e., node-to-node connection) that passes through that segment. 2. To control the number of hubs in a path, we recommend that one hub be used to connect to several other hubs. -
Page 25: Chapter 4: Hardware Reference
Chapter 4: Hardware Reference Before connecting any network device to this hub, please review Chapter 2 for information on system installation and Chapter 3 for a brief look at common network architectures. This chapter describes the hardware features of the Fast EtherHub-12s. -
Page 26: Fan Alert
Fast EtherHub-12s User’s Guide The front panel array provides indicators that show the utilization of network bandwidth and indicate the status of port connections. It includes port status indicators and a statistical display for network traffic as shown below. Figure 4.2 Indicators Fan Alert Color:... -
Page 27: Statistical Display For System Performance
Fast EtherHub-12s User’s Guide Statistical Display for System Performance ) The statistical indicators show the percentage of valid data Utilization Utilization% passing through all ports compared to overall network bandwidth (updated every 0.5 seconds). There are 5 LEDs representing the percentage of network utilization. The corresponding LEDs light up to show that the utilization of LAN bandwidth has reached this level. -
Page 28: Port Status Display
Fast EtherHub-12s User’s Guide Note: If the hub displays a high collision rate, check to see if any of the connected devices 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 load. Port Status Display Partition Status Color:... -
Page 29: Rj-45 Ethernet Ports
Fast EtherHub-12s User’s Guide : If the Link LED does not light up when a device is connected to its corre- Troubleshooting sponding port, check that both the hub and connected device are powered on. Be sure the cable length for all devices connected to the hub are within the limits described under Distance Limit for Fast Ethernet Cabling in Chapter 2. -
Page 30: Rear Panel
Fast EtherHub-12s User’s Guide 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 unit is equipped with a universal full-range power source. Hardware Reference... -
Page 31: Appendix A: Troubleshooting
Appendix A: Troubleshooting Diagnosing Hub Indicators This Fast EtherHub can be easily monitored through its comprehensive panel indicators. These indicators assist the network manager in identifying problems the hub may encounter. This section describes common problems you may encounter and possible solutions. indicator does not light up. -
Page 32: System Diagnostics
Fast EtherHub-12s User’s Guide System Diagnostics Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply as explained in the previous section. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet, and verify that the fan on back of the unit is unobstructed and running prior to shutdown. -
Page 33: Physical Configuration
Fast EtherHub-12s User’s Guide External Adapters Make sure the network interface hardware and software drivers for the attached devices are function properly. Check the adapter cards and associated drivers used in any attached workstation or server. Physical Configuration If problems occur after altering the network configuration, restore the original connections, then try to track the problem down by implementing the new changes, one step at a time. -
Page 34: Appendix B: Port And Cable Assignments
Appendix B: Port and Cable Assignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) MDI-X Assignment MDI Assignment (Station Port 1 ~ 12) (Cascade Port 12) Input Receive Data + Output Transmit Data + Input Receive Data - Output Transmit Data - Output Transmit Data + Input Receive Data +... -
Page 35: Appendix C: Specifications
Appendix C: Product Specifications Baseband Transmission Technique Star or Tree Topology Access Method CSMA/CD, 100Mbps Standards Conformance IEEE 802.3u 100BASE-TX Class II Repeater Unshielded or shielded twisted-pair cable Media Supported (100 Category 5 STP/UTP) 12 RJ-45 MDI-X station ports, Port 12 can be switched to Interfaces function as an MDI-X station port or MDI daisy-chain port 100 meters maximum using category 5 STP or UTP cable... -
Page 36: Appendix D: Regulatory Standards Compliance
Appendix D: Regulatory Standards Compliance EMI Certification FCC Class B Certification Accton Technology Corporation Model Numbers: EH3012-TX FCC ID: HED3012EHLCT-TX This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interference, and 2. -
Page 37: Voluntary Control Council For Interference (Vcci-2
Fast EtherHub-12s User’s Guide Warnings 1. Wear an anti-static wrist strap or take other suitable measures to prevent electrostatic discharge whenever handling this equipment. 2. When connecting this hub to a power outlet, connect the field ground lead on the tri-pole power plug to a valid earth ground line to prevent electrical hazards. -
Page 38: European Community Immunity Requirements
Fast EtherHub-12s User’s Guide 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 (CISPR 22) and the immunity requirements of EN50082-1. CE Mark Declaration of Conformance (for EMI and Safety) This is to certify that this product complies with ISO/IEC Guide 22 and EN45014. -
Page 39: Safety Compliance
Fast EtherHub-12s User’s Guide 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 Set Specifications 120 Volts UL Listed/CSA Certified Cord Set Minimum 18 AWG Type SVT or SJT three conductor cord... -
Page 40: Sicherheitshinweise
Fast EtherHub-12s User’s Guide 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 angefeuchtetes Tuch. 3. -
Page 41: Appendix E: Product Support Services
Write a description of the problem, including what problems occurred, when they occurred, duration of the problems, the unit number, serial number, hardware, software and the DOS version that you are using. Then contact your dealer or Accton Technology Corporation for assistance. -
Page 42: Bulletin Board Service (Bbs
Fast EtherHub-12s User’s Guide After repair, Accton will inform you of the date of delivery and the exact amount due. Please send the payment by T/T (Telegram Transfer), and Accton will send you the fixed component after receiving payment. With or without warranty, if the hardware is found to be free of defects, you will only be charged for testing and handling. -
Page 43: Technical Support
To obtain software upgrades connect via ftp to ftp.accton.com.tw Send your technical questions by email to support@accton.com.tw Mail your technical questions to: International Headquarters USA Headquarters Accton Technology Corporation Accton Technology Attn: Technical Support Corporation No. 1 Creation Road III... -
Page 44: Limited Warranty
Fast EtherHub-12s User’s Guide Limited Warranty Accton warrants to the original owner that the product delivered in this package will be free from defects in material and workmanship for the lifetime of the product. For the warranty to apply, you must register your purchase by returning the registration card indicating the date of purchase and including proof of purchase. -
Page 45: Return Process
Accton’s Limited Lifetime Warranty for this product. The product may contain fully tested, recycled parts, warranted as if new. For warranty information: All territories except North and South America: Accton Technology Corporation, International Headquarters No. 1, Creation Rd. III, Science-based Industrial Park, Hsinchu 300, Taiwan, R.O.C. Phone: 886-3-5770-270 Fax: 886-3-5770-267... -
Page 46: Accton Offices
Fast EtherHub-12s User’s Guide Accton Offices Accton Australia, Accton Technology Corporation International Headquarters, Level 6, 10 Help Street No. 1 Creation Rd. III, Chatswood, N.S.W. 2067 Science-based Industrial Park, Australia Phone: 61-2-9410-9860 Hsinchu 300, Taiwan, R.O.C. Fax: 61-2-9410-9861 Hsinchu: Phone: 886-3-5770-270,... -
Page 47: Glossary
Glossary 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using twisted-pair cable (100 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. Their interference makes both signals unintelligible. - Page 48 Fast EtherHub-12s User’s Guide Fast Ethernet 100 Mbps network communication system based on Ethernet and the CSMA/CD access method. IEEE 802.3 Standard Standard for the physical and electrical connections in local area networks developed by the IEEE. The IEEE 802.3u standard covers these same issues for 100 Mbps networks. Light emitting diode on the front panel of the hub used for monitoring a hub or network condition.
- Page 49 Fast EtherHub-12s User’s Guide Shielded Twisted-Pair (STP) 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 cable refered to in this manual is also sometimes called screened twisted-pair (ScTP). Its impedance is 100 and has the same pin assignment as UTP.
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Page 50: Index
Index Front Panel • 4-1 Accton's Fast EtherHub-12s • 1-1 Automatic Partitioning • 1-3 Guidelines for Multiple Hub Configuration • Automatic Polarity Detection • 1-3 Cable Length Hardware Description • 4-1 Precise Cable Length Budgeting • 2-4 Simplified Cable Length Constraints • 2-4 Certification •... - Page 51 Fast EtherHub-12s User’s Guide Certification • C-1 Interfaces • C-1 Media Supported • C-1 Maximum Cable Length • 2-4 Power System • C-1 MDI Daisy-chain Port • 3-2 Standards Conformance • C-1 Stand-alone Configuration • 3-1 Standards Compliance • D-1 Network Connection MDI Daisy-Chain Port •...
- Page 52 EH3012-TX 150114-101 E0197-R02...
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