Appendix A: Troubleshooting Diagnosing Hub Indicators The dual-speed CheetaHub can be easily monitored through its front 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. Symptom: Power indicator does not light up. Cause: Defective power supply or Power LED. Solution: Have your unit’s power supply or Power LED replaced. Ask for dealer assistance.
CheetaHub Power-3012B User’s Guide Use the diagnostic procedures described in Chapter 2 and the following section to verify that all other system components are functioning properly. If you still cannot resolve the problem, contact your Accton distributor for assistance. System Diagnostics Installation Verify that all system components have been properly installed.
CheetaHub Power-3012B User’s Guide System Integrity As a last resort verify the hub’s integrity with a power-on reset. Turn the power to the hub off and then on a few times. If the problem still persists and you have completed all the preceding diagnoses, contact your Accton distributor for further assistance. (Refer to Appendix E.
Appendix B: Port and Cable Assignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) Pin 1 2 3 6 4,5,7,8 MDI-X Assignment (Station Ports) Input Receive Data + Input Receive Data Output Transmit Data + Output Transmit Data Not Used MDI Assignment (Cascade Port) Output Transmit Data + Output Transmit Data Input Receive Data + Input Receive Data Not Used Table B-1 RJ-45 Pin Assignments Schematics for both straight and crossover twisted-pair cable are shown below.
CheetaHub Power-3012B User’s Guide MII Port Figure B-2 MII Connector Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Signal Name +5V MDIO MDC RXD<3> RXD<2> RXD<1> RXD<0> RX_DV RX_CLK RX_ER TX_ER TX_CLK TX_EN TXD<0> TXD<1> TXD<2> TXD<3> COL CRS +5V Table B-2 MII Pin Assignments B-2 Cable and Port Assignments Pin 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Signal Name +5V COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON COM
Appendix C: Product Specifications Repeater Criteria Baseband Star or Tree CSMA/CD, 10 Mbps or 100 Mbps IEEE 802.3 10BASE-T Repeater, IEEE 802.
CheetaHub Power-3012B User’s Guide Internal Switching Criteria Network Bridging Function Switching Method Address Table Queue Buffer C-2 filtering, forwarding and learning store-and-forward 4K entries 10 Mbps bridging port: 256 Kbytes 100 Mbps bridging port: 256 Kbytes Product Specifications
Appendix D: Regulatory Standards Compliance EMI Warning FCC Class B Certification Accton Technology Corporation Model Numbers: EH3012B-TX FCC ID: HED3012EHB 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. This device must accept any interference received, including interference that may cause undesired operation.
CheetaHub Power-3012B User’s Guide You may use unshielded or shielded twisted-pair (UTP or STP) for RJ-45 connections. 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.
CheetaHub Power-3012B User’s Guide EN55022 Declaration of Conformance This is to certify that the Accton Ethernet Hub is shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the application of EN55022:1987 Class B (CISPR 22:1985/BS 6527:1988). CE Mark Declaration of Conformance This is to certify that this product complies with ISO/IEC Guide 22 and EN45014.
CheetaHub Power-3012B User’s Guide Safety Compliance Underwriters Laboratories Compliance Statement 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.
CheetaHub Power-3012B User’s Guide Wichtige Sicherheitshinweise 1. Bitte lesen Sie diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den späteren Gebrauch auf. 3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssig- oder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung. 4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein. 5. Das Gerät ist vor Feuchtigkeit zu schützen. 6.
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 operation, please check the adapter configuration settings, cables, connectors, network terminators, hardware compatibility and other network components.
CheetaHub Power-3012B User’s Guide Bulletin Board Service (BBS) • In countries other than the U.S., call 886-3-5770-654 to reach Accton Taiwan’s modem line. Modems with 14400 through 2400 baud are supported. Choose 8 data bits, 1 stop bit and no parity. Standard VT100 terminal emulation is supported • In the United States, call 408-452-8828 to reach the Accton USA’s BBS line. Modems with 14400 through 2400 baud are supported. Choose 8 data bits, 1 stop bit and none parity.
CheetaHub Power-3012B User’s Guide 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 by fax, mail or phone. • Send your technical questions by fax to: International Headquarters: 886-3-5770-267 USA Headquarters: 408-452-8988 • To obtain software upgrades connect via ftp to ftp.accton.com.tw • Send your technical questions by email to support@accton.com.
CheetaHub Power-3012B 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. There will be a minimal charge to replace consumable components, such as fuses, power transformers, and mechanical cooling devices.
CheetaHub Power-3012B User’s Guide 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 damage or loss in transit. You must use the original container (or the equivalent) and pay the shipping charge.
CheetaHub Power-3012B User’s Guide Accton Offices Accton Technology Corporation International Headquarters, No. 1 Creation Rd. III, Science-based Industrial Park, Hsinchu 300, Taiwan, R.O.C.
Glossary 10BASE-T IEEE’s specifications for 10 Mbps Ethernet using 2-pair Category 3, 4 or 5 twisted-pair cable (100W STP or UTP). The maximum length of cable for a point-to-point connection is 100 meters (328 feet). 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using 2-pair Category 5 twisted-pair cable (100W STP or UTP). The maximum length of cable for a point-to-point connection is 100 meters (328 feet).
CheetaHub Power-3012B User’s Guide Collision A condition in which two packets transmitted over a medium interfere with each other. This interference makes both unintelligible. Configuration The way to set up a computer, server, or local area network. Connection A logical binding between two or more users of an interconnection service. Daisy-Chain Port An MDI RJ-45 port used to cascade compatible devices in a daisychain configuration using straight-through twisted-pair cable.
CheetaHub Power-3012B User’s Guide LED Light emitting diode on the front panel of the hub used for monitoring a hub or network condition. An LED display corresponds to a hub condition. Local Area Network (LAN) A group of interconnected computers and support devices. MDI Port (Medium Dependent Interface) MDI is the IEEE standard for the UTP interface to 10BASE-T. This RJ-45 port can be used with straight-through cable to connect the hub to a network interconnection device, such as another hub or switch.
CheetaHub Power-3012B User’s Guide RJ-45 Connector Most common terminator for twisted-pair wiring. Shielded Twisted-Pair (STP) 100W 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 100Wand has the same pin assignment as UTP.
Index A I address learning function, 1-3 automatic partitioning, 1-4 automatic polarity detection, 1-4 installation mounting hubs in a rack · 2-3 mounting hubs on a flat surface · 2-2 requirements, 2-1 installing the system, 2-1 introduction to Fast Ethernet, 1-1 C certification, C-1 configuring the network, 3-1 connecting multiple hubs, 3-2, 3-4 fiber optic cable, 3-4 RJ-45 daisy-chain port, 3-2 connecting the hub system, 2-4 crossover cable, B-1 J jabber lock-up, 1-4 L limited warranty, E-4 link ind
CheetaHub Power-3012B User’s Guide network span, 2-6, 2-7 fiber optic, v twisted-pair, iv standards compliance, D-1 P troubleshooting configuration, A-2 hub indicators, A-1 installation, A-2 twisted-pair cable category 3,4,5, 2-4 T package contents, i port and cable assignments, B-1 ports MII, B-2 RJ-45, B-1 product features, 1-2 product support services, E-1 Accton offices, E-6 Bulletin Board Service, E-2 hardware repair service, E-1 interactive Fast Fax, E-2 ordering information, E-6 technical suppor
EH3012B E0997-R03 150611-101
