Accton 12i - Manuals

Fast EtherHub 3500 System User’s Guide iv Quick Installation Attach each hub to one of thebackplane segments 6. Connect each hub to one of the 3 Fast Ethernet segments embedded in the backplane bus using either on-boardconfiguration (Chapter 4) or optional network managementsoftware (e.g., AccView/O...

Fast EtherHub 3500 System User’s Guide Quick Installation v Or attach to the extendednetwork via the SmartExtenderModule The SmartExtender Module canbe used to attach to anothernetwork device that uses adifferent media type 10. If an optional SmartExtender Module is installed in the expansion port, ...

Fast EtherHub 3500 System User’s Guide vi Quick Installation Difference in connecting to theextended network via the daisy-chain port or SmartExtenter Module The Fast EtherHub 3500 stack can be connected to a largernetwork using any device such as a switch, bridge or router.Depending on your network...

About this Guide vii About this Guide This guide is designed for the experienced network installer.It describes how to install and operate Accton’s Fast EtherHub3500 system. After reading this manual, you should be able touse the front display panel and configure options to manage allyour network co...

Contents Contents ix Chapter 1: Product Overview 1-1 Introduction to Fast Ethernet 1-1 Brief Description of the Fast EtherHub 3500 System 1-1 Distinguishing Factors of Fast EtherHub 3500 System 1-5 Basic Features of Fast EtherHub 3500 System 1-6 Data Switching with the SmartExtender Modules 1-9 Swit...

Fast EtherHub 3500 System User’s Guide x Contents Chapter 3: Setting up Network Connections 3-1 Special Architecture Used for the Fast EtherHub 3500 Stack 3-1 Multi-Segment Architecture 3-1 FlexBus Management Link 3-2 Hub ID Setting 3-2 Using Management Agents 3-2 Port Backup Function 3-4 Security F...

Fast EtherHub 3500 System User’s Guide Contents xi System Configuration Program for the 12mi and Stack 4-11 Exiting the Configuration Program 4-12 Restarting the Agent 4-13 Displaying System Information 4-14 Configuring the SNMP Agent 4-15 Configuring SNMP Communities 4-16 Configuring IP Trap Manage...

Fast EtherHub 3500 System User’s Guide xii Contents Network Connections 5-13 Station Ports 5-13 Daisy-Chain Port 5-13 Serial Port 5-14 Rear Panel Components 5-15 Power Supply Modules 5-15 FlexBus Ports 5-16 In 5-16 Out 5-16 Appendix A: Troubleshooting A-1 Diagnosing Hub Indicators A-1 System Diagnos...

Fast EtherHub 3500 System User’s Guide Contents xiii Underwriters Laboratories Compliance Statement D-4 Sicherheitshinweise D-5 Appendix E: Product Support Services E-1 Product Registration E-1 Problem Report E-1 Hardware Repair Service E-1 Software Update and Upgrade Service E-2 Bulletin Board Serv...

Fast EtherHub 3500 System User’s Guide xiv Contents List of Figures Figure 2-1 Stacking Hubs without a Rack 2-2 Figure 2-2 Mounting Hubs Using a Mounting Rack 2-3 Figure 3-1 Attaching All Hubs in Stack to One Segment 3-5 Figure 3-2 Attaching Hubs in Stack to Three Segments 3-6 Figure 3-3 Linking Par...

Fast EtherHub 3500 System User’s Guide Contents xv Figure 4-25 Hub Statistics: Hub Selection Menu 4-38 Figure 4-26 Hub Statistics Window 4-38 Figure 4-27 Port Statistics: Port Selection Menu 4-39 Figure 4-28 Port Statistics Menu 4-40 Figure 4-29 SEM Port Statistics Menu 4-42 Figure 5-1 Front Panel o...

Product Overview 1-1 Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbps Ethernet has served well for past generationsof 80286 and 80386 machines performing simple file transfers.However, with the inevitable growth in corporate network sizeand the introduction of fully-functio...

Fast EtherHub 3500 System User’s Guide 1-2 Product Overview Moreover, the Fast EtherHub 3500 System provides advancednetwork security features including “Intrusion Protection”which ensures that only designated workstations are able totransmit packets onto the network. Management access via theout-of...

Fast EtherHub 3500 System User’s Guide Product Overview 1-5 Distinguishing Factors of Fast EtherHub 3500 System This system provides the following key features: • Provides multi-segment architecture allowing the network tobe split into three segments • Supports fault-tolerant configuration by allowi...

Fast EtherHub 3500 System User’s Guide 1-6 Product Overview Basic Features of Fast EtherHub 3500 System In addition to all the features mentioned above, the system provides: Basic Repeater Functions • Repeats all incoming frames to the connected segment • Automatically partitions and reconnects devi...

Fast EtherHub 3500 System User’s Guide Product Overview 1-7 • Firmware update supported for the Fast EtherHub-12mimodels via out-of-band Xmodem file transfer through theserial port, or in-band TFTP file transfer over the network Networking Flexibility(via SmartExtender Modules) • One slot supports o...

Fast EtherHub 3500 System User’s Guide 1-8 Product Overview • Adapts to universal wide range voltage power(i.e., 100V AC to 240V AC ™ 10%, 50~60 ™ 3Hz) • Provides a slot for an optional backup power supply Complete StandardsConformance • Conforms to IEEE 802.3u Class I repeater specificationand 100B...

Fast EtherHub 3500 System User’s Guide Product Overview 1-9 Data Switching with the SmartExtender Modules Switching Technology The SmartExtender Modules that plug into the expansion sloton the front panel of the Fast Ethernet 3500 series use advancedswitching techniques to provide a high-speed netwo...

Fast EtherHub 3500 System User’s Guide 1-10 Product Overview As a device functioning on the media access control (MAC)layer, the extender modules are protocol independent, andtherefore compatible with IEEE802.3, IEEE802.3u, TCP/IP,NetWare, DECnet and XNS protocols. They can provide aconnection betwe...

Installing the System 2-1 Chapter 2: Installing the System This chapter describes how to install the Fast EtherHub unitand establish network connections. You may install this hubon any level surface (e.g., a table or shelf) or in a standardequipment rack. However, please take note of the followingmi...

Fast EtherHub 3500 System User’s Guide 2-2 Installing the System Hardware Installation This hub is suitable for desktop or rack-mount installation. Agood location is at the center of all the devices you want to link,close to a collapsed backbone, and near a power outlet. F These hubs can be stacked ...

Fast EtherHub 3500 System User’s Guide Installing the System 2-3 Mounting Hubs in a Rack If you need to install aredundant power module,refer to Installing a Backup Power Supply on page 2-11,and complete that procedurebefore stacking the hub. Please comply with the following instructions to ensure t...

Fast EtherHub 3500 System User’s Guide 2-4 Installing the System Connecting the Hub System Remember to label all yourconnections at both ends of thecable to facilitate troubleshootingor future changes to networkconfiguration. The Fast EtherHub has 12 RJ-45 shielded ports (i.e.,100BASE-TX) that suppo...

Fast EtherHub 3500 System User’s Guide Installing the System 2-5 2. Connect one end of the cable to the RJ-45 port of the network interface card, and the other end to any available (MDI-X)station port on the hub. Just remember that if you use Port 12MDI-X , the daisy-chain port ( 12MDI ) cannot be u...

Fast EtherHub 3500 System User’s Guide 2-6 Installing the System Making a Connection via the MDI Daisy-Chain Port The Fast EtherHub 3500 hubsare Class I repeaters. Class Irepeaters cannot be cascadedto another repeater in the samecollision domain. The daisy-chain port can onlybe cascaded to another ...

Fast EtherHub 3500 System User’s Guide Installing the System 2-7 10BASE-T - EM3551-TX SmartExtender Module 100BASE-TX - EM3551-TX SmartExtender Module 100BASE-T4 - EM3551-T4 SmartExtender Module 100BASE-FX - EM3551-FX-ST SmartExtender Module EM3551-FX-SC SmartExtender Module Note: The EM3551-TX auto...

Fast EtherHub 3500 System User’s Guide 2-8 Installing the System connect one end of the cable to the MDI port on the extendermodule, and the other end to the MDI-X port on the targetdevice (or vice versa). When inserting an RJ-45 plug, be surethe tab on the plug clicks into position to ensure that i...

Fast EtherHub 3500 System User’s Guide Installing the System 2-9 Note: To determine the power loss incurred by intervening devices andspecific cable type, inquire with the manufacturer. The power budgetdepends on the gauge of cable as shown below. Gauge of Fiber Cable Power Budget 50/125 m m 9.2 dB ...

Fast EtherHub 3500 System User’s Guide 2-10 Installing the System Setting the Communication Mode - The 100BASE-TX and 100BASE-FX SmartExtender Modules both support half andfull-duplex communications. The hub uses auto-negotiation todetermine the transmission mode for any new connection madeto these ...

Fast EtherHub 3500 System User’s Guide Installing the System 2-11 SEM SEM Interconnecting Stack Segments - Hubs can be completely isolated from the stack, or can be attached to any of the threeavailable segments embedded in the backplane. When attachedto a segment (i.e., common collision domian), th...

Fast EtherHub 3500 System User’s Guide 2-12 Installing the System Powering on the Hub 1. Plug one end of the power cord into a power outlet, and the other end into the power socket at the rear of the hub (in thatorder for reasons of safety). Then plug in the backup powermodule if you purchased this ...

Fast EtherHub 3500 System User’s Guide Installing the System 2-13 The following table shows the components to be tested. Test Function/Component Fast EtherHub-12i Fast EtherHub-12mi Boot ROM All tests listed for Fast EtherHub-12i Hub Configuration EEPROM and then the following tests: RAM for Repeate...

Fast EtherHub 3500 System User’s Guide 2-14 Installing the System Configuring a Manageable Stack To manage the stack with the on-board configuration programor any optional network management software, the stack mustinclude an EtherHub-12mi (i.e., a unit with an SNMP agent).Moreover, the network mana...

Fast EtherHub 3500 System User’s Guide Installing the System 2-15 Verifying Port Status Check each connection by viewing the port status indicatorslisted below. (For a more detailed description on theseindicators, refer to Chapter 5.) LED State Indication Link On Port has established a valid network...

Fast EtherHub 3500 System User’s Guide 2-16 Installing the System • Verify that you have not exceeded the specified limits for anyattached media type as summarized in the following table: Media Type Maximum Length (meters) Twisted Pair 100 Fiber Opitc 412 (at half duplex)2000 (at full duplex) Table ...

Setting Up Network Connections 3-1 Chapter 3: Setting up Network Connections Special Architecture Used for the Fast EtherHub 3500 Stack Multi-Segment Architecture The Fast EtherHub 3500 system supports multi-segmentconfiguration through the FlexBus cabling. Three Ethernetsegments (i.e., separate col...

Fast EtherHub 3500 System User’s Guide 3-2 Setting Up Network Connections FlexBus 3500 Management Link The management link in a chain of cascaded hubs must beconnected to manage the stack as a single unit. This means thatonly hubs connected using the FlexBus can be controlled by anSNMP management ag...

Fast EtherHub 3500 System User’s Guide 3-4 Setting Up Network Connections Port Backup Function The Fast EtherHub 3500 system supports a port backupfunction (i.e., a redundant link). A hub system can have up to18 pairs of redundant links. These links are configurable usingthe in-band or out-of-band m...

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-5 Sample Network Configurations The Fast EtherHub 3500 series stackable hubs are designed toprovide flexibility in configuring network connections. Thishub can be used as a simple stand-alone hub or connected toother network int...

Fast EtherHub 3500 System User’s Guide 3-6 Setting Up Network Connections Attaching the Stack to Multiple Segments This example shows 3 independent Ethernet LANs in a stackedsystem. Hubs 1 and 2 are attached to segment 1, while hubs 3and 4 are attached to segment 2, and hubs 5 and 6 are attachedto s...

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-7 Isolating Specific Hub Connections You can interconnect or isolate the hubs in a stack using amulti-segment configuration. In a stacked system, some hubsmay be connected to a segment while others are isolated (notattached to a...

Fast EtherHub 3500 System User’s Guide 3-8 Setting Up Network Connections Isolating Each Hub In this example, each hub in the stack is an independentsegment (i.e., isolated collision domain). Hubs 2 to 6 are notconnected to any of the 3 segments embedded in the FlexBus3500 cable. E t h e rH u b 3 5 ...

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-9 Extending the Network with Alternate Connections You can extend your network by connecting any of the hubs ina stacked system to other compatible hubs via theSmartExtender Module. In the diagram below, a stand-alonehub is conn...

Fast EtherHub 3500 System User’s Guide 3-10 Setting Up Network Connections Linking the Stack to a Management Station In a stacked system, connect the in-band management workstationto the same segment that the management agent is attached to. Inthis example, the management agent is attached to segmen...

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-11 Interconnecting the Segments The 3 segments within a stacked system can be combined into aninterconnected network using the SmartExtender Modules. Forexample, you can connect all the segments in the stack using justtwo extend...

Fast EtherHub 3500 System User’s Guide 3-12 Setting Up Network Connections Connecting Remote Stacks Fast EtherHub stacks can be connected by using theSmartExtender Modules. For example, you can connect twostacks by running a cable from the extender module in one stackto any station port in a remote ...

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-13 Operating in the Novell NetWare IPX Environment If you’re using Novell NetWare server as your NetworkOperating System, you can have up to 3 LAN adapters installedin the File Server. With this type of setup, the network isperc...

Fast EtherHub 3500 System User’s Guide 3-14 Setting Up Network Connections Operating in the TCP/IP Environment In TCP/IP Internet environment, gateways are used to improveperformance and regulate network traffic by confining mostnetwork activity to their respective local network, and stillmaintain c...

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-15 Connecting to the Network Backbone The stack can be connected to the network backbone by attachingit to a device such as a Fast Ethernet switch. The following figureshows a direct connection from the stack’s daisy-chain port ...

Configuring the System 4-1 Chapter 4: Configuring the System Making the Connections Required for System Configuration The Fast EtherHub 3500 series provides a menu-drivenconfiguration program. This program can be accessed bymaking a connection to the serial port on the front of the hub(using a termi...

Fast EtherHub 3500 System User’s Guide 4-2 Configuring the System • Remote connection - making a modem connection via thehub’s serial port to the on-board menu-driven configurationprogram; or using SLIP over TCP/IP from a remote site toaccess the hub with optional network management software. Direct...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-3 Local In-Band Telnet Connection Before accessing a hubusing a Telnet connection, besure you have already set theagent’s IP address via the on-board configuration program orboot protocol. Prior to accessing the hub via an in-band Telne...

Fast EtherHub 3500 System User’s Guide 4-4 Configuring the System Remote Connection If you want to use a remote PC to configure either of the FastEtherHub-12mi models via modem connections, at the remotesite make sure the modem’s baud rate is 9600 and that the ATcommand set is supported. Configuring...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-5 Before accessing a hub usingin-band management softwarefrom a remote site, be sure youhave already set the hub’s serialIP address via the on-boardconfiguration program or bootprotocol. Remote In-Band - You can also make a remote netwo...

Fast EtherHub 3500 System User’s Guide 4-6 Configuring the System The physical setup and connections required for on-boardmanagement are described in greater detail at the beginning ofthis chapter. To open the Fast EtherHub 3500 SystemConfiguration Program, do the following: 1. Activate the Fast Eth...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-7 2. The login procedure for the Fast EtherHub-12i configuration program requires a password only. Access priviledges areRead/Write, and the default password is “admin.” When logging into the Fast EtherHub-12mi configuration program, yo...

Fast EtherHub 3500 System User’s Guide 4-8 Configuring the System • When configuring a Fast EtherHub-12mi or the connectedstack, you can use a direct connection to the managmentport, use a Telnet connection from a networked computer, oruse a standard modem connection from a remote computer. System C...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-9 Menu selections are briefly described in the following table. Field Description Command Set hub ID Press “h” to set the hub identifier to any value from 1 ~ 6. When stacked witha management agent, note that all hub identifiers are aut...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-11 System Configuration Program for the Fast EtherHub-12mi and Stack With this program you can define system parameters, manageand control stacked hubs and associated ports, and monitornetwork conditions. Set up a management connection ...

Fast EtherHub 3500 System User’s Guide 4-12 Configuring the System To select a configuration item, use the arrow keys to positionthe cursor (i.e., the highlighted box), and then press the [Enter]key. Configuration items followed by dots (...) open up anothermenu screen. Menu selections are briefly d...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-13 Restarting the Agent Use the Restart System command under the Main Menu to resetthe agent and all devices managed by the agent. The hardwareconfiguration for the agent and system tests are displayed onthe management console, similar ...

Fast EtherHub 3500 System User’s Guide 4-14 Configuring the System Displaying System Information Use the System Information command to display and modifygeneral information about the EtherHub stack, or for quicksystem identification. View a description of the system similarto that displayed in the f...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-15 Configuring the SNMP Agent When using SNMP-based network management software (e.g.,the optional AccView/Open package), you must specify basicparameters that control management access to the system. Usethe SNMP Configuration menu to d...

Fast EtherHub 3500 System User’s Guide 4-16 Configuring the System Configuring SNMP Communities Access to the hub’s on-board management agent via in-bandmanagement software is controlled with community strings.Use the SNMP Communities command to edit communitystrings and access rights as shown below...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-17 Configuring IP Trap Managers When the hub experiences an unusual event, a message isissued to all listed network managers. Networks compliantwith Internet Protocol (IP) can pass trap messages to IP TrapManagers as shown below: IP Tra...

Fast EtherHub 3500 System User’s Guide 4-18 Configuring the System Configuring IPX Trap Managers When the hub experiences an unusual event, a message isissued to all listed network managers. Networks compliantwith Internetwork Packet Exchange (NetWare IPX) protocolcan pass trap messages to IPX Trap ...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-19 Changing the Segment Configuration When accessing the EtherHub system with in-band tools suchas SNMP, Telnet or TFTP, you must configure the hub to useIP, IPX or SNMP over Ethernet protocols. Use the SegmentConfiguration menu to disp...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-21 Configuring Hub Parameters Use the Hub Configuration menu under the ConfigurationPanel to configure any hub in the stack. This menu is used toconfigure the repeater and management modules. Use thefollowing menu to select the required...

Fast EtherHub 3500 System User’s Guide 4-22 Configuring the System Hub Configuration To configure a hub, select it from the list shown above. Thefollowing Hub Configuration menu will appear, allowing you toset parameters for the base repeater unit or the networkmanagement module. Hub Configuration R...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-23 Menu items are briefly described in the following table. Board Field Description (Repeater Unit) Hub ID Hub identifier within the stack. (Up to 6 hubs may be connected via the FlexBusmanagement channel.) Name Any user-defined name fo...

Fast EtherHub 3500 System User’s Guide 4-24 Configuring the System Hub ID Configuration To change the numeric hub identifier, select Hub IDConfiguration from the Hub Configuration: Hub SelectionMenu shown above. The following Hub ID Configurationmenu will appear. After changing a hub identifier, ver...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-25 Configuring Port Parameters Use the Port Configuration menu under the ConfigurationPanel to configure the ports for any hub in the stack. Select theport type for the required hub from the following menu. Port Configuration: Port Sele...

Fast EtherHub 3500 System User’s Guide 4-26 Configuring the System Configuring Repeater Ports If you select the repeater port type (i.e., 1 through 12), the PortConfiguration Menu will open. This menu displays the ID andstack position of the selected hub, and also allows you toenable/disable any rep...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-27 Configuring the SmartExtender Module If you select the SmartExtender Module (i.e., SEM), the SEMPort Configuration Menu will open. This menu allows you toconfigure various communication parameters for this module. SEM Port Configurat...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-31 Use the Port Intrusion Control Menu to define the MACaddress for the device authorized to access a port, and set theresponse type, as shown in the following example. Port Intrusion Control Return to Previous Panel Hub ID : 1 Position...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-37 Segment Statistics Displays statistics for the stack’s segments. These values canbe used to indicate the approximate load balance in your stack.If the loading is severly unbalanced, you may consideradjusting your network connections ...

Fast EtherHub 3500 System User’s Guide Configuring the System 4-39 Displayed items are briefly described in the following table. Field Description Hub ID Hub identifier within the stack. Position The physical position in the stack (as determined by its position from the top of the FlexBus chain). Fr...

Fast EtherHub 3500 System User’s Guide 4-40 Configuring the System Statistics for Repeater Ports Statistics for repeater ports covers a wide range of Ethernetvariables. If any of the error indications are extremely high,there may be a problem with the port, the attached device, orthe network cabling...

Hardware Reference 5-1 Chapter 5: Hardware Reference Before connecting any network device to this hub, pleasereview Chapter 2 for information on system installation,Chapter 3 for a brief look at common network architectures,and Chapter 4 for information on system configuration via themenu-driven int...

Fast EtherHub 3500 System User’s Guide 5-2 Hardware Reference Indicator Panel The SmartWatch  panel includes comprehensive indicators for monitoring the hub. It displays the status of the networkconnections for each port, the hub’s connection to the stack,and the status of the on-board SNMP agent. ...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-3 There are four optional SmartExtender Modules as describedunder Connecting to a SmartExtender Module in Chapter 2. The indicators provided with each module are described below. EM3551-TX for 100BASE-TX or 10BASE-T EM3551-T4 for 100BASE-T4...

Fast EtherHub 3500 System User’s Guide 5-4 Hardware Reference SNMP Color: GreenLabel: SNMP Function: Indicates that an SNMP frame is being received bythe Agent. LED Activity Condition Indication BLINKING LIGHT ON Hub is presently receiving an SNMP frame. NO LIGHT OFF Hub is not receiving an SNMP fra...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-5 Management Agent Indicators Color: GreenLabels: Master, Backup Function: Displays the status of on-board managementagents. LED Condition Indication Master ON SNMP module is installed and functioning as the primaryagent. OFF SNMP module is...

Fast EtherHub 3500 System User’s Guide 5-6 Hardware Reference Hub ID LED 1 Hub ID LED 2 Hub ID LED 4 Hub ID Number Setting ON ON ON (DEFAULT)Used for automatic Hub ID setting. ON OFF OFF Hub ID 1 OFF ON OFF Hub ID 2 ON ON OFF Hub ID 3 OFF OFF ON Hub ID 4 ON OFF ON Hub ID 5 OFF ON ON Hub ID 6 Table 5...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-7 Terminator Color: Green Label: Terminator Function: Indicates if a unit is located in a terminal positionin a stacked system. This LED shows if the hub isconnected to the stack’sbackplane and the FlexBuscable properly terminated. The unit...

Fast EtherHub 3500 System User’s Guide 5-8 Hardware Reference There are 5 LEDs representing the percentage of networkbandwidth in use by the attached (or isolated) segment. Whenactive, these LEDs look like a stereo’s equalizer display. Thehub updates this display every 0.5 seconds. For example, if n...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-9 For example, if packet collisions reach 1%, the LED labeled 1will light up. However, if collisions go beyond 1% (e.g., 15%),the LED labeled 15 + and all the other LEDs before it (i.e., 1, 3, 5, and 10) will also light up in rapid successi...

Fast EtherHub 3500 System User’s Guide 5-10 Hardware Reference Disable - Disabling a port is the same as manually partitioning it, except that you must also manually reconnect it. For example,to prevent a certain device from accessing the network or toreduce network traffic you may opt to disable th...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-11 Link - The Link LED should light up when a device (e.g., computer, hub or router) establishes a valid connection via the RJ-45 port. Troubleshooting - If the Link LED does not light up when a device is connected to a port, check that bot...

Fast EtherHub 3500 System User’s Guide 5-12 Hardware Reference After power on, the hub automatically performs a diagnostictest. The diagnostic tests display results for the repeater boardvia the Partition/Disable LEDs on the front panel. Test resultsfor the agent board can only be seen via a console...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-13 Network Connections The front panel on the Fast EtherHub 3500 Series provides thefollowing network options: • Connections to end-node devices using RJ-45 station ports. • Cascaded connection to a compatible switch or router usingthe dais...

Fast EtherHub 3500 System User’s Guide 5-14 Hardware Reference Serial Port Use the UTP cable andconnection converter providedwith your unit for plugging into aPC or modem as described inChapter 4. Note that configuration optionsprovided for the Fast EtherHub-12i are limited because thismodel does no...

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-15 Rear Panel Components The rear panel is also similar for all versions. Figure 5.3 showsthe rear panel, which includes a primary power supply, a slotfor an optional secondary power supply module, and twobackplane connectors used for stack...

Troubleshooting A-1 Appendix A: Troubleshooting Diagnosing Hub Indicators The Fast EtherHub 3500 Series can be easily monitored throughits comprehensive panel indicators. These indicators assist thenetwork manager in identifying problems the hub may encounter.This section describes common problems y...

Fast EtherHub 3500 System User’s Guide A-2 Troubleshooting System Diagnostics Power and Cooling Problems If the power indicator does not turn on when the power cord isplugged in, you may have a problem with the power outlet,power cord, or internal power supply as explained in theprevious section. Ho...

Fast EtherHub 3500 System User’s Guide Troubleshooting A-3 then communications are set to half duplex by default. Basedon this type of industry-standard connection policy, if you areusing a full-duplex device that does not support auto-negotiation,communications can be easily lost (i.e., reset to th...

Fast EtherHub 3500 System User’s Guide A-4 Troubleshooting Physical Configuration If problems occur after altering the network configuration,restore the original connections, and try to track the problemdown by implementing the new changes, one step at a time.Ensure that cable distances and other ph...

Pin Assignments B-1 Appendix B: Pin Assignments RJ-45 Port Figure B-1 RJ-45 Connector(on the Hub Side) RJ-45 station ports (MDI-X) can be attached to any deviceswhich use a standard LAN interface (e.g., a workstation, serveror router). RJ-45 daisy-chain ports (MDI) can be cascaded to astation port o...

Fast EtherHub 3500 System User’s Guide B-2 Pin Assignments DB9 Serial Port Pin Description Figure B-2 DB9 Serial Port(on the Hub Side) The DB9 serial port on the front panel is used to connect thehub to a management device. The on-board menu-drivenconfiguration program can be accessed from a termina...

Fast EtherHub 3500 System User’s Guide B-4 Pin Assignments Hub’s 9-Pin Serial Port to PC's 25-Pin DTE Port Hub’s 9-Pin Serial Port Cable Wiring PC’s 25-Pin DTE Port 1 DCD 4 RTS 2 RXD 3 TXD 3 TXD 2 RXD 4 DTR 6 DSR 5 SGND 7 SGND 6 DSR 20 DTR 7 RTS 5 CTS 8 CTS 8 DCD 9 RI 22 RI Table B.5 Full-Pin Connec...

Fast EtherHub 3500 System User’s Guide Pin Assignments B-5 Hub’s 9-Pin Serial Port to Modem's 25-Pin DCE Port Hub’s 9-Pin Modem's 25-Pin Serial Port DCE Port 1 < ---------- DCD ---------- 8 2 < ---------- RXD ---------- 3 3 ------------ TXD -------- > 2 4 ------------ DTR -------- > 20 5...

Product Specifications C-1 Appendix C: Product Specifications Product Specifications Repeater Board Access Method CSMA/CD, 100 Mbps Standards Conformance IEEE 802.3u 100BASE-TX Communication Rate 100 Mbps on Ports 1 - 12 Media Supported 100 W Cat 5 twisted-pair (2-pair) Number of Ports 12 100BASE-TX...

Fast EtherHub 3500 System User’s Guide C-2 Product Specifications Repeater Stack Expansion Up to 6 modules (72 station ports) Expansion Interface FlexBus 3500 stack cable (68 wires) Configuration Automatic hub-ID and bus termination Segmentation Supports 3 or more segments in a stack Extender Port A...

Regulatory Standards D-1 Appendix D: Regulatory Standards EMI Warning FCC Class A Certification This device complies with Part 15 of the FCC Rules. Operation issubject to the following conditions: 1. This device may not cause harmful interference, and2. This device must accept any interference recei...

Fast EtherHub 3500 System User’s Guide D-2 Regulatory Standards Note: In order to maintain compliance with the limits of a Class A digitaldevice, Accton requires that you use a quality interface cable whenconnecting to this device. Changes or modifications not expresslyapproved by Accton could void ...

Fast EtherHub 3500 System User’s Guide Regulatory Standards D-3 EN55022 Declaration of Conformance This is to certify that the Accton Ethernet Hub is shielded against thegeneration of radio interference in accordance with the application ofCouncil Directive 89/336/EEC, Article 4a. Conformity is decl...

Fast EtherHub 3500 System User’s Guide D-4 Regulatory Standards Safety Compliance Underwriters Laboratories Compliance Statement Important! Before making connections, make sure you have thecorrect Cord Set. Check it (read the label on the cable) against thefollowing specification list. Operating Vol...

Fast EtherHub 3500 System User’s Guide Regulatory Standards 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 einangef...

Product Support Services E-1 Appendix E: Product Support Services Product Registration Fill in the Owner Registration Card and mail it to Accton TechnologyCorporation. Accton will keep your record and inform you of any newAccton unit developments. Problem Report If problems occur during unit operati...

Fast EtherHub 3500 System User’s Guide E-2 Product Support Services Software Update and Upgrade Service Accton constantly improves its software units by adding enhancementsand new features. Minor software updates are free of charge. If greaterchanges have been made to the software, Accton offers sof...

Fast EtherHub 3500 System User’s Guide Product Support Services E-3 Technical Support Your dealer or installer is the person who understands your networkand Accton units. If neither is available to help you, Accton technicalsupport engineers are available by fax, mail or phone. • Send your technical...

Fast EtherHub 3500 System User’s Guide E-4 Product Support Services Limited Warranty Accton warrants to the original owner that the product delivered in this package willbe free from defects in material and workmanship for the lifetime of the product.For the warranty to apply, you must register your...

Fast EtherHub 3500 System User’s Guide Product Support Services E-5 Return Process Before you may return any Accton product to Accton, you must request an RMAnumber by calling, faxing or writing Accton’s Service Department at the addresslisted below. If you ship the product, you must assume the risk...

Fast EtherHub 3500 System 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: 886-3-57...

Fast EtherHub 3500 System User’s Guide Product Support Services E-7 Ordering Information • Fast EtherHub-12i(EH3512I-TX) Intelligent Fast Ethernet Stackable Hub with 12100BASE-TX Ports • Fast EtherHub-12mi SNMP(EH3512M-TX) Intelligent Fast Ethernet Stackable Hub with 12100BASE-TX Ports; including SN...

Glossary 1 Glossary 10BASE-T IEEE’s specifications for running 10 Mbps Ethernet using twisted-pair cable (100 W STP or UTP ) . The maximum length of cable for a point-to-point connection is 100 meters, and the maximum number ofnodes is 1024. 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet usi...

Fast EtherHub 3500 System User’s Guide 4 Glossary MIB (Management Information Base) An acronym for Management Information Base. It is a set of database objects that contains informationabout the device. MII (Media Independent Interface) IEEE’s specifications for a multi-media interface that supports...

Fast EtherHub 3500 System User’s Guide Glossary 5 Station Port (MDI-X) MDI-X ports which are used for connecting the hub to any workstation or server that has a properlyinstalled network adapter card. (For port 12, the selector switch must be set to MDI-X .) STP (Shielded Twisted-Pair) 100 W Categor...

Index 1 Index A Accessing the Configuration Management Program • 4-5AccView/Open • 1-4Applications Attaching the Stack to Multiple Segments • 3-6Attaching the Stack to One Segment • 3-5Connecting Remote Stacks • 3-12Connecting to the Network Backbone • 3-15Extending the Network with Alternate Connec...