BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM Asanté BNC Hub/6 for 10BASE-2 Networks Installation Guide
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM
BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM Asanté BNC Hub/6
BNCHub 194-00A Book Page ii Wednesday, October 15, 1997 3:51 PM Disclaimer Information in this document is subject to change without notice and does not represent a commitment on the part of Asanté Technologies, Inc.
BNCHub 194-00A Book Page iii Wednesday, October 15, 1997 3:51 PM FCC Information This equipment is classified as a Class A computing device. Class A devices may be used only in commercial, business, or industrial environments. This equipment generates, uses, and can radiate radio frequency energy. If this equipment is not insulated properly in strict accordance with the instructions in this manual, then it may cause interference in its electronic environment.
BNCHub 194-00A Book Page iv Wednesday, October 15, 1997 3:51 PM Warranty Disclaimers Asanté Technologies, Inc. makes no other warranties, express, implied, or otherwise, regarding the BNC/6, and specifically disclaims any warranty for merchantability or fitness for a particular purpose. The exclusion of implied warranties is not permitted in some states and the exclusions specified herein may not apply to you. This warranty provides you with specific legal rights.
BNCHub 194-00A Book Page v Wednesday, October 15, 1997 3:51 PM Asking for assistance Asking for assistance To contact Asanté Technical Support: Telephone (800) 622-7464 (408) 435-0706 Fax (408) 432-6018 Fax-Back1 (800) 741-8607 (408) 954-8607 Bulletin Board Service (BBS)2 (408) 432-1416 ARA BBS2 (guest log in) (408) 894-0765 AppleLink mail3/BBS2 ASANTE.TECH FTP Archive2 ftp.asante.com Internet mail3 support@asante.com 1. Please request catalog of contents. 2. Download INDEX.
BNCHub 194-00A Book Page vi Wednesday, October 15, 1997 3:51 PM Tell us what you think Asanté Technologies is interested in your comments/suggestions about our manuals. If you take the time to make suggestions, we’ll consider your suggestions for new manual releases.
BNCHub 194-00A Book Page vii Wednesday, October 15, 1997 3:51 PM Table of Contents Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii FCC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Warranty Disclaimers . . . .
BNCHub 194-00A Book Page viii Wednesday, October 15, 1997 3:51 PM Before You Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Interpreting the Hub LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 Testing Your Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Common Problems Found in the Hub . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Common Cabling Problems and Solutions . . . . . . . . . . .
BNCHub 194-00A Book Page ix Wednesday, October 15, 1997 3:51 PM List of Figures Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 2-1 Figure 2-2 Figure 2-3 Figure 0-2 Figure B-1 Linear bus topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sample network map . . . . . . . . . . . . . . . . . . . . . . . . . . . Attaching T-connector to a device . . . . . . . . . . . . . . . . . AC power adapter . . . . . . . .
BNCHub 194-00A Book Page x Wednesday, October 15, 1997 3:51 PM List of Tables Table 2-1 Table 3-1 Table 0-1 Page x Power Adapter Specifications . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Hub LED Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 AUI Wiring Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BNCHub 194-00A Book Page xi Wednesday, October 15, 1997 3:51 PM Preface • About the BNC Hub/6 on page xii • About This Manual on page xiv • About 10BASE-2 on page xv • Other Asanté Networking Products on page xvi
BNCHub 194-00A Book Page xii Wednesday, October 15, 1997 3:51 PM About the BNC Hub/6 The Asanté™ BNC Hub/6 is a hardware device that lets you create high-performance Ethernet networks over thin coaxial cable. The BNC Hub/6 is a low-cost, easy to use device that does not require complicated network management and is best suited to build small to medium sized networks. Asanté also has a line of intelligent hubs that offer powerful network management capability.
BNCHub 194-00A Book Page xiii Wednesday, October 15, 1997 3:51 PM About the BNC Hub/6 Features ❏ ❏ ❏ ❏ Cost effective, easy to use, plug-and-play unmanaged hub requiring no switch setting AUI port provided for thick Ethernet or external MAU connection for maximum flexibility Designed for both desktop and wall-mount application.
BNCHub 194-00A Book Page xiv Wednesday, October 15, 1997 3:51 PM About This Manual This manual is divided into three chapters and three appendices: Chapter 1, “Planning a Network Installation” on page 1-1, explains some important considerations when designing and planning your network, and provides the foundation for building reliable, easily managed, and expandable LANs.This is where to begin if you are not an experienced network installer.
BNCHub 194-00A Book Page xv Wednesday, October 15, 1997 3:51 PM About 10BASE-2 About 10BASE-2 Thin Ethernet, as defined by the IEEE 802.3 specifications, is also called 10BASE-2. 10BASE-2 is similar to 10BaseT, but one way in which they differ is in the type of cable used. A 10BaseT network uses unshielded, twistedpair (UTP) cable, while a 10BASE-2, or thin network, uses thin coaxial cable.
BNCHub 194-00A Book Page xvi Wednesday, October 15, 1997 3:51 PM Other Asanté Networking Products To connect your personal computers and other network devices to a BNC Hub/6, you will need a 10BASE-2-compatible internal or external adapter for each computer. Asanté Technologies provides a complete line of network interface cards for PCs and the Macintosh, as well as a 10T, BNC, or fiber MAU (Media Attachment Unit). All Asanté products support the latest IEEE specifications.
BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM 1 Planning a Network Installation • Before You Start on page 1-2 • Assign a Network Manager on page 1-3 • Create a Network Map on page 1-4 • Planning for Network Operations on page 1-5
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM Planning a Network Installation Before You Start An efficient network that will serve your long-term needs requires thorough planning.This chapter discusses some of the topics that are important in the early stages of network development.The topics are arranged in chronological order.You should read this entire chapter to get an overview of the details involved in planning your network.
BNCHub 194-00A Book Page 3 Wednesday, October 15, 1997 3:51 PM Assign a Network Manager Assign a Network Manager A network manager initially coordinates the design and installation of the network. Once the network is up and running, the network manager is responsible for adding new users to the network and troubleshooting problems. For small installations, the network manager’s duties may only require a few hours a week. For larger installations, the network manager’s position may be a full-time job.
BNCHub 194-00A Book Page 4 Wednesday, October 15, 1997 3:51 PM Planning a Network Installation Create a Network Map A network map is a visual record of your network configuration. Figure 1-3 shows a sample network map. Create a network map by copying a floor plan diagram and adding graphics representing devices and cabling. Modify the map as you change your plans, and use the completed map as a guide during installation. It is a good idea to create the map on a computer so you can easily modify it.
BNCHub 194-00A Book Page 5 Wednesday, October 15, 1997 3:51 PM Planning for Network Operations Planning for Network Operations Create a Network Log A network log is a record of the names of devices, cable locations, wall-jack numbers, and other information about the network. A simple network log may contain the name, description, node number, and BNC Hub/6 port number for each device on the network. A more detailed log may contain the serial number of each device, the network number, and more.
BNCHub 194-00A Book Page 6 Wednesday, October 15, 1997 3:51 PM Planning a Network Installation ❏ ❏ Ground only one of the two terminators. If your terminator doesn’t have a grounding strap, attach a length of wire to it.Then attach the other end of the wire to the center screw on an electrical outlet cover plate. The coaxial cable BNC connector must attach directly to a T-connector that attaches directly to the device. Figure 1-4 shows an example. (Drop cables do NOT meet IEEE specifications.
BNCHub 194-00A Book Page 7 Wednesday, October 15, 1997 3:51 PM Planning for Network Operations Place the BNC Hub/6 in an area that is readily accessible for installation and maintenance.The BNC Hub/6 must also be placed near an AC outlet. If you are wiring a building that has multiple wiring closets, you may want to place BNC Hubs in both the main wiring closet and satellite wiring closets. The temperature and humidity requirements must fall within those specified in Appendix A,“Technical Specifications.
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BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM 2 Installation • Before You Start on page 2-2 • Plug and Play Installation on page 2-3 • Connecting to Thin Coaxial Cable Ethernet on page 2-4 • Connecting Multiple Hubs for a Larger Network on page 2-7
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM Installation Before You Start Before you begin the installation, check the AC voltage of your country.The AC power adapter used with your BNC Hub should have the AC voltage that matches that of your country. ▲ Table 2-1 Using an AC power adapter with an incorrect AC voltage may damage your hub. Power Adapter Specifications Input Power The AC power voltage of your country power electricity specification Output power 12VAC @ 1.
BNCHub 194-00A Book Page 3 Wednesday, October 15, 1997 3:51 PM Plug and Play Installation Plug and Play Installation The Asanté BNC Hub/6 is designed for plug and play installation. Before you connect the hub to other devices, there are several things you should keep in mind: ❏ ❏ ❏ ∆ When connecting two Ethernet devices (such as a hub, Ethernet adapter, or BNC MAU) together, you must make sure that the total cable length is not less than 0.5 meters (1.6 feet).
BNCHub 194-00A Book Page 4 Wednesday, October 15, 1997 3:51 PM Installation Connecting to Thin Coaxial Cable Ethernet Do the following steps to connect a thin Ethernet configuration. 1 According to the IEEE 802.3 rules, a thin Ethernet segment supports 30 connections over a distance of 185 meters (607 feet). 2 A T-connector is used to connect the thin Ethernet cable, as shown in Figure 2-2.
BNCHub 194-00A Book Page 5 Wednesday, October 15, 1997 3:51 PM Connecting to Thin Coaxial Cable Ethernet 5 Make sure both ends of the thin Ethernet segment are terminated by a 50Ω terminator. Only one terminator end should be grounded, according to the IEEE specification.
BNCHub 194-00A Book Page 6 Wednesday, October 15, 1997 3:51 PM Installation Connecting to Thick Coaxial Cable Ethernet The AUI connector on the hub can be used to connect a 10BASE-5 thick Ethernet coaxial cable segment to the hub.This allows network stations on the thick coaxial cable to communicate with network stations on the 10BASE-2 thin coaxial cables. Do the following steps to connect a thick coaxial cable Ethernet to the hub.
BNCHub 194-00A Book Page 7 Wednesday, October 15, 1997 3:51 PM Connecting Multiple Hubs for a Larger Network Connecting Multiple Hubs for a Larger Network You have three choices when connecting networks with more than one hub: ❏ ❏ ❏ Use a BNC port on the hub to connect to a thin Ethernet backbone. Use the AUI port to connect to a thick Ethernet backbone. Use the AUI port and an external MAU to connect to a media of your choice, such as fiber optic cable.
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BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM 3 Troubleshooting Your Network • Before You Start on page 3-2 • Interpreting the Hub LEDs on page 3-3 • Testing Your Installation on page 3-4 • Common Problems Found in the Hub on page 3-5
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM Troubleshooting Your Network Before You Start You test and monitor your network’s status with the aid of the LEDs on the hub, the network interface card, or the BNC MAU. In general, the LEDs give information about the status of a particular unit or function.This section covers how to read the LEDs, both when testing your installation and during normal network operation.
BNCHub 194-00A Book Page 3 Wednesday, October 15, 1997 3:51 PM Interpreting the Hub LEDs Interpreting the Hub LEDs When you first turn on your Asanté BNC Hub/6, all the LEDs switch ON while the hub goes through a series of internal diagnostics to ensure its reliable operation. After the diagnostics have been completed, each LED indicates a different condition. Below is a description of each LED.
BNCHub 194-00A Book Page 4 Wednesday, October 15, 1997 3:51 PM Troubleshooting Your Network Testing Your Installation After your installed wiring is connected, you need to test the installation. You do this by testing two network devices that communicate with one another, such as one workstation and one file server. When you have one pair of devices working correctly, you will have verified that the hub functions and will know that the link between the workstation and the file server is complete.
BNCHub 194-00A Book Page 5 Wednesday, October 15, 1997 3:51 PM Common Problems Found in the Hub Common Problems Found in the Hub Link Status LED is off. Probable cause is a T-connector not making contact. Check all T- connectors and make sure both ends of each segment are terminated. BNC port doesn’t have proper termination. The BNC Hub/6 is not auto-terminating.Terminate the BNC port. Following are suggested areas to check depending on what the problem is.
BNCHub 194-00A Book Page 6 Wednesday, October 15, 1997 3:51 PM Troubleshooting Your Network ❏ Thin coaxial cable is shorted out or cut. Check integrity and continuity of cable. Network Management Software Network management applications can be categorized into two groups — network analyzers and protocol analyzers. Below you will find a list of network management applications that Asanté has found to be very useful in diagnosing network problems.
BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM A Cable Wiring Diagram • AUI (DB15) Connector on page A-2
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM AUI (DB15) Connector Table 0-1 AUI Wiring Description Pin Symbol Pairs 3 DO+ Transmit Data Out + 10 DO- Pair Data Out - 11 DO S 5 DI+ Receive Data In + 12 DI- Pair Data In - 4 DI S Data In Shield 7 NC Not Connected 15 NC Not Connected 8 NC GND 2 Cl+ Collision Control In + 9 Cl- Pair Control In - 1 Cl S 6 VC Power Voltage Common 13 VP Pair Voltage Plus 14 VS Voltage Shield Shell PG Protec
BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM B Mounting the Hub • Wall Mounting the Hub on page B-2
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM Wall Mounting the Hub Your hub can be used as a desktop unit or as a wall-mount unit. A wallmount bracket and four screws are provided in the package. Two keyhole slots are provided on the bottom of the hub so that it can be mounted on a surface, such as a wall or the underside of a counter top. To mount the hub, use the template on the next page to locate the screws in the wall and follow the directions below.
BNCHub 194-00A Book Page 3 Wednesday, October 15, 1997 3:51 PM Wall Mounting the Hub Wall-mount screw hole Key screw hole Wall-mount screw hole 9.8 cm Key screw hole Wall-mount screw hole .
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BNCHub 194-00A Book Page 1 Wednesday, October 15, 1997 3:51 PM C Technical Specifications
BNCHub 194-00A Book Page 2 Wednesday, October 15, 1997 3:51 PM IEEE 802.3 Compliance ❏ ❏ 10BASE-2 (thin, BNC) 10BASE-5 (thick, AUI) BNC Hub/6 ❏ Six BNC ports and one AUI port; both port types may be used at the same time Maximum Cable Lengths ❏ ❏ 10BASE-5 (thick Ethernet, AUI): 50 meters maximum to Ethernet MAU (transceiver) with shielded, twisted-pair drop cable 10BASE-2 (thin Ethernet, BNC): 185 meters maximum per segment Physical Dimensions ❏ 8.6 inches x 5.3 inches x 1.
BNCHub 194-00A Book Page i Wednesday, October 15, 1997 3:51 PM Index Numerics 10BASE-2 about xii described xv 10BASE-5 thick Ethernet 2-6 50Ω terminator 1-5, 2-5 A AC power voltage 2-2 adapters, requirements for xvi adding network devices 1-5 assigning a network manager 1-3 attaching T-connector to device 1-6 AUI cable.
BNCHub 194-00A Book Page ii Wednesday, October 15, 1997 3:51 PM MAU xiii, 2-7 T-connector 3-5 creating network log 1-5 creating network map 1-4 D DB15 connector.
BNCHub 194-00A Book Page iii Wednesday, October 15, 1997 3:51 PM I IEEE specifications Asanté product support for xvi for wiring 1-6 input power specifications 2-2 installation and hub location 1-7 installation, network planning 1-1 using a consultant 1-2 internal diagnostics 3-3 interpreting hub LEDs 3-3 K keyhole slots on hub B-2 L LEDs, interpreting 3-3 Link Status LEDs 3-3, 3-4, 3-5 location, determining hub 1-6 M manager, network assigning 1-3 responsibilities 1-3 map, network creating 1-4 as insta
BNCHub 194-00A Book Page iv Wednesday, October 15, 1997 3:51 PM assigning 1-3 responsibilities 1-3 network map creating 1-4 as installation guide 1-4 sample 1-4 O output power specifications 2-2 P physical dimensions C-2 planning network installation 1-1 for network operations 1-5 plug and play installation 2-3 plugging in network segments 2-3 ports AUI xiii, 2-7 BNC 2-7, 3-5 power adapter specifications 2-2 Power/Traffic LED 3-3 products, other Asanté xvi R removing network segments 2-3 RG-58A/U coaxia
BNCHub 194-00A Book Page v Wednesday, October 15, 1997 3:51 PM testing network status 3-2 thick Ethernet backbone 2-7 thin Ethernet backbone 2-7 thin Ethernet segment, number of connections 2-4 thin Ethernet, about xv thin net cable, maximum link-length 1-6 topology, bus xv transceiver cable 2-6 transceiver, external 2-6 troubleshooting 3-2 U user-serviceable parts 3-2 V verifying hub functioning 3-4 W wall mounting the hub B-2 wire distance and hub location 1-6 wiring closets and hub location 1-7 wirin
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BNCHub 194-00A Book Page 8 Wednesday, October 15, 1997 3:51 PM Asanté Technologies, Inc. 821 Fox Lane San Jose, CA 95131 December 1994 Part Number 06-00194-00 Rev.
