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Installation and User’s Guide Fast EtherHub 3500 System Intelligent Fast Ethernet Stackable Hub with 12 100BASE-TX Ports; including SNMP Management Support[...]

Copyright (c) 1996 by Accton Technology Corporation. All rights reserved. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Accton Technology Corporation. Accton makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability, quality,[...]

Package Contents i Package Contents Carefully unpack the contents of the package and verify them against the checklist given below. This checklist applies to all the Fast EtherHub 3500 Series models unless otherwise specified. Package Checklist æ Fast EtherHub-12i Intelligent Fast Ethernet Stackable Hub with 12 100BASE-TX Ports (Model No. EH3512I-[...]

Quick Installation iii Quick Installation Accton’s Fast EtherHub 3500 models each contain 12 Fast Ethernet (100BASE-TX) RJ-45 ports, one MDI daisy - chain port, and one slot for an optional connection us in g 1 0 0 B AS E - TX (10BASE-T), 100BASE-T4 or 100BASE- FX. The smart design built into the front display panel and configure options provide [...]

Fast EtherHub 3500 System User’s Guide iv Quick Installation Attach each hub to one of th e backplane segment s 6. Connect each hub to one of the 3 Fast Ethernet segments embedded in the backplane bus using either on-board configuration (Chapter 4) or optional network management software (e.g., AccView/Open). You can leave a hub isolated from the[...]

Fast EtherHub 3500 System User’s Guide Quick Installation v Or attach to the extended network via the SmartExtender Module The SmartExtender Module can be used to attach to another network device that uses a different media type 10. If an optional SmartExtender Module is installed in the expansion port, it can be used to make a bridged connection[...]

Fast EtherHub 3500 System User’s Guide vi Quick Installation Difference in connecting to the extended network via the daisy- chain port or SmartExtenter Module The Fast EtherHub 3500 stack can be connected to a larger network using any device such as a switch, bridge or router. Depending on your network configuration, you may attain better perfor[...]

About this Guide vii About this Guide This guide is designed for the experienced network installer. It describes ho w to in stall and op erate A ccto n’ s Fast EtherHub 3500 system. A fter reading this manual, you should be able to use the front display panel and configure options to manage all your network connections. This manual covers the fol[...]

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 Switching Technology 1-9 Configuration Options for the[...]

Fast EtherHub 3500 System User’s Guide x Contents C hapter 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 Features 3-4 Sample Network Configurations 3-5 A[...]

Fast EtherHub 3500 System User’s Guide Contents xi Sy s t e m C o n f i g u r a t i on P r og r a m f o r t h e 1 2 m i a n d S t a c k 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 Managers 4-17 Configu[...]

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 Diagnostics A-2 Power and Cooling Problems A-2 Installa[...]

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 Service (BBS) E-2 Interactive Fast Fax (U.S.A. offic[...]

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 Part of the Stacked Hubs to a Segment 3-7 Figure 3-[...]

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 of EtherHub-12mi 5-1 Figure 5-2 Indicators for Et[...]

Fast EtherHub 3500 System User’s Guide xvi Contents Table 4.22 SEM Port Statistics Menu 4-42 Table 5.1 Power Indicator 5-2 Table 5.2 SmartExtender Module Indicator 5-2 Table 5.3 SmartExtender Module Indicators 5-3 Table 5.4 Interhub Indicator 5-3 Table 5.5 SNMP Indicator 5-4 Table 5.6 Management Agent Indicators 5-5 Table 5.7 Hub Indicators 5-6 T[...]

Product Overview 1-1 Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbps Ethernet has served well for past generations of 80286 and 80386 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 syst[...]

Fast EtherHub 3500 System User’s Guide 1-2 Product Overview Moreover, the Fast EtherHub 3500 System provides advanced network security features including “Intrusion Protection” which ensures that only designated workstations are able to transmit packets onto the network. Management access via the out-of-band serial port or in-band via telnet [...]

Fast EtherHub 3500 System User’s Guide Product Overview 1-3 This hub can be used in a stand-alone configuration to form a simple Fast Ethernet LAN networking 2 to 12 computers using the RJ-45 station ports. Further network expansion can be achieved using the embedded tri-segment backplane, the MDI daisy- chain port, or one of the optional Sm artE[...]

Fast EtherHub 3500 System User’s Guide 1-4 Product Overview via auto-sensing. Transmission mode for 100BASE-T4 is fixed at half duplex. • 100BASE-FX (EM3551-FX-SC or EM3551-FX-ST) Provides two SC or ST type connectors for 100BASE-FX connection. Transmission mode is automatically set to half or full duplex via auto-negotiation. Transmission spee[...]

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 to be split into three segments • Supports fault-tolerant configuration by allowing port link backup and agent backup • Su[...]

Fast EtherHub 3500 System User’s Guide 1-6 Product Overview Basic Features of Fast EtherHub 3500 System In addition to all the features m entioned above, the sy stem provides: Basic Repeater Functions • Repeats all incoming frames to the connected segment • Automatically partitions and reconnects devices which experience excessive collisions [...]

Fast EtherHub 3500 System User’s Guide Product Overview 1-7 • Firmware update supported for the F ast Ethe rHub -1 2m i m odel s via out-of-band Xmodem file transfer through the serial port, or in-band TFTP file transfer over the network Networking Flexibility (via SmartExtender Modules) • One slot supports optional slide-in network extender [...]

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 Standards Conformance • Conforms to IEEE 802.3u Class I repeater specification and 100BASE-TX standard (i.e., 100 Mbps Fas[...]

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 slot on the front panel of the Fast Ethernet 3500 series use advanced switching techniques to provide a high-speed network backbone. Each extender module acts as a tw[...]

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, and therefore compatible with IEEE802.3, IEEE802.3u, TCP/IP, NetWare, DECnet and XNS protocols. They can provide a connection between conventional 10BASE-T and high-speed 100B[...]

Fast EtherHub 3500 System User’s Guide Product Overview 1-11 flawless performance. To ensure that you can manage any kind of network load, the extender modules provide adaptive cut- through switching based on Accton’s smart algorithm. This method dynamically changes the way it handles data based on the current error rate. This switching strateg[...]

Installing the System 2-1 Chapter 2: Installing the System This chapter describes how to install the Fast EtherHub unit and establish network connections. You may install this hub on any level surface (e.g., a table or shelf) or in a standard equipment rack. However, please take note of the following minimum site requirements before you begin. Pre-[...]

Fast EtherHub 3500 System User’s Guide 2-2 Installing the System Hardware Installation This hub is suitable for desktop or rack-mount installation. A good 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 with other hubs using a mounting rack or direc[...]

Fast EtherHub 3500 System User’s Guide Installing the System 2-3 Mounting Hubs in a Rack If you need to install a redundant power module, refer to Installing a Backup Power Supply on page 2-11, and complete that procedure before stacking the hub. Please comply with the following instructions to ensure that your hub is securely mounted in the rack[...]

Fast EtherHub 3500 System User’s Guide 2-4 Installing the System Connecting the Hub System Remember to label all your connections at both ends of the cable to facilitate troubleshooting or future changes to network configuration. The Fast EtherHub has 12 RJ-45 shielded ports (i.e., 100BASE-TX) that support connections to 100 Mbps Fast Ethernet. P[...]

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 av ailable (MDI -X) station port on the hub. Just remem ber that if y ou use Port 12MDI-X , the daisy - chain port ( 12M DI ) cannot be used. When inserting an RJ-45 plug , be s[...]

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 hubs are Class I repeaters. Class I repeaters cannot be cascaded to another repeater in the same collision domain. The daisy-chain port can only be cascaded to another device which breaks up the collision domain[...]

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 Sm artExtender Module EM3551-FX- S C Sm artExtender Module Note: The EM3551- T X automatically adjusts to 10 or 100 M bps u[...]

Fast EtherHub 3500 System User’s Guide 2-8 Installing the System connect one end of the cable to the MDI port on the extender module, and the other end to the MDI-X port on the target device (or vice versa). When inserting an RJ-45 plug, be sure the tab on the plug clicks into position to ensure that it is properly seated. Note that as a general [...]

Fast EtherHub 3500 System User’s Guide Installing the System 2-9 Note: To determine the pow er loss incurred by intervening devices and specific cable type, inquire w ith the manufacturer. T he pow er budget depends on the gauge of cable as shown below . Gauge of Fi ber C abl e Power Budget 50/125 m 9.2 dB 62.5/125 m 13 dB Table 2.2 Power Budget [...]

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 and full-duplex communications. The hub uses auto-negotiation to determine the transmission mode for any new connection made to these modules. However, if a connected device does [...]

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 three available segments embedded in the backplane. When attached to a segment (i.e., common collision domian), the hub can communi cate with all other devices [...]

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 that order for reasons of safety). Then plug in the backup power module if you purchased this option. For reliable backup, connect the backu[...]

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 Repeater Board CPU Console I/O Repeater Information Bas[...]

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 program or any optional network management software, the stack must include an EtherHub-12mi (i.e., a unit with an SNMP agent). Moreover, the network management station must be able to access the seg[...]

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

Fast EtherHub 3500 System User’s Guide 2-16 Installing the System • Verify that you have not exceeded the specified limits for any attached 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 2.5 Maximum Cable Length • If a computer i[...]

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-segment configuration through the FlexBus cabling. Three Ethernet segments (i.e., separate collision domains) are embedded in the hub’s Flex[...]

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 be connected to manage the stack as a single unit. This means that only hubs connected using the FlexBus can be controlled by an SNMP management agent (i.e., Fast EtherHub-12mi). At most, 6 hu[...]

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-3 Multiple Agents The on-board configuration program only provides access to the private MIB. To gain full SNMP functionality, you must use optional network management software (e.g., AccView/Open). You may include multiple agents in a stack. To provide a fail- safe backup ma[...]

Fast EtherHub 3500 System User’s Guide 3-4 Setting Up Network Connections Port Backup Function The Fast EtherHub 3500 system supports a port backup function (i.e., a redundant link). A hub system can have up to 18 pairs of redundant links. These links are configurable using the in-band or out-of-band management program. When a primary link fails,[...]

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 to provide flexibility in configuring network connections. This hub can be used as a simple stand-alone hub or connected to other network interconnection dev ices in v arious config urat[...]

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 stacked system. Hubs 1 and 2 are attached to segment 1, while hubs 3 and 4 are attached to segment 2, and hubs 5 and 6 are attached to segment 3. This configuration serves to both b[...]

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 a multi-segment configuration. In a stacked system, some hubs may be connected to a segment while others are isolated (not attached to any segment). In this example, hubs 1 and 2 ar[...]

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 independent segment (i.e., isolated collision domain). Hubs 2 to 6 are not connected to any of the 3 segments embedded in the FlexBus 3500 cable. EtherHub3500 AG ENT Ether H ub3500 HUB MAN AGE MEN T CHANN EL SE[...]

Fast EtherHub 3500 System User’s Guide Setting Up Network Connections 3-9 Extending the Netw ork w ith A lternate Connections You can extend your network by connecting any of the hubs in a stacked system to other compatible hubs via the SmartExtender Module. In the diagram below, a stand-alone hub is connected to hub 3 in the stacked system using[...]

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 workstation to the same segment that the management agent is attached to. In this example, the management agent is attached to segment 1. Thus, the in-band management workstation [...]

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 an interconnected network using the SmartExtender Modules. For example, you can connect all the segments in the stack using just two extender modules as shown below. Using this approac[...]

Fast EtherHub 3500 System User’s Guide 3-12 Setting Up Network Connections Connecting Remote Stacks Fast EtherHub stacks can be connected by using the SmartExtender Modules. For example, you can connect two stacks by running a cable from the extender module in one stack to any station port in a remote stack. When using twisted-pair cable, the max[...]

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 Network Operating System, you can have up to 3 LAN adapters installed in the File Server. With this type of setup, the network is perceived as logically divided into different c[...]

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 improve performance and regulate network traffic by confining most network activity to their respective lo cal network, and still maintain communication links among LANs of the same or[...]

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 attaching it to a device such as a Fast Ethernet switch. The following figure shows a direct connection from the stack’s daisy-chain port to a 100BASE-TX switch which is serving as c[...]

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-driven configuration program. This program can be accessed by making a connection to the serial port on the front of the hub (using a term inal or a com puter running a term inal em ulat[...]

Fast EtherHub 3500 System User’s Guide 4-2 Configuring the System • Remote connection - making a modem connection via the hub’s serial port to the on-board menu-driven configuration program; or using SLIP over TCP/IP from a remote site to access the hub with optional network management software. Direct Connection Th e Fa st E t h erH u b-1 2i[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-3 Local In-Band Telnet Connection Before accessing a hub using a Telnet connection, be sure you have already set the agent’s IP address via the on- board configuration program or boot protocol. Prior to accessing the hub via an in-band Telnet connection , you must first configure i[...]

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 Fast EtherHub-12mi models via modem connections, at the remote site make sure the modem’s baud rate is 9600 and that the AT command set is supported. Configuring the Fast EtherHub Site Connect your modem [...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-5 Before accessing a hub using in-band management software from a remote site, be sure you have already set the hub’s serial IP address via the on-board configuration program or boot protocol. Remote In-Band - You can also make a remote network connection to the Fast EtherHub-12mi [...]

Fast EtherHub 3500 System User’s Guide 4-6 Configuring the System The physical setup and connections required for on-board management are described in greater detail at the beginning of this chapter. To open the Fast EtherHub 3500 System Configuration Program, do the following: 1. Activate the Fast EtherHub 3500 System Configuration Program from [...]

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 are Read/Write, and the default password is “admin.” When logging into the Fast EtherHub-12mi configuration program, you must provide both a user name and passwor[...]

Fast EtherHub 3500 System User’s Guide 4-8 Configuring the System • When configuring a Fast EtherHub-12mi or the connected stack, you can use a direct connection to the managment port, use a Telnet connection from a networked computer, or use a standard modem connection from a remote computer. System Configuration Program for the Fast EtherHub-[...]

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 with a management agent, note that all hub identifiers are automatically configured. Set Segment Press ?[...]

Fast EtherHub 3500 System User’s Guide 4-10 Configuring the System The current settings for the extender module are displayed in the status field. Menu selections are briefly described in the following table. Field Description Command Set duplex Press “d” to set the transmission mode to half-duplex, full-duplex or auto- negotiation. All Fast [...]

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, manage and control stacked hubs and associated ports, and monitor network conditions. Set up a management connection to the hub, and enter a user name and password[...]

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

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 reset the agent and all devices managed by the agent. The hardware configuration for the agent and system tests are displayed on the management console, similar to the messages shown in the following exampl[...]

Fast EtherHub 3500 System User’s Guide 4-14 Configuring the System Displaying System Information Use the System Information command to display and modify general information about the EtherHub stack, or for quick system identification. View a description of the system similar to that displayed in the following example: System Information Return t[...]

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 basic parameters that control management access to the system. Use the SNMP Configuration menu to display the following screen: parameters: SNMP[...]

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-band management software is controlled with community strings. Use the SNMP Communities command to edit community strings and access rights as shown below: SNMP Communities Return to Previous Panel[...]

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 is issued to all listed network managers. Networks compliant with Internet Protocol (IP) can pass trap messages to IP Trap Managers as shown below: IP Trap Managers Return to Previous Panel IP Addres[...]

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 is issued to all listed network managers. Networks compliant with Internetwork Packet Exchange (NetWare IPX) protocol can pass trap messages to IPX Trap Managers as shown below: IPX Trap Managers Re[...]

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 such as SNMP, Telnet or TFTP, you must configure the hub to use IP, IPX or SNMP over Ethernet protocols. Use the Segment Configuration menu to display the following screen: Segment Configurati[...]

Fast EtherHub 3500 System User’s Guide 4-20 Configuring the System Menu items are briefly described in the following table. Field Description Segment Name A name you can assign to the segment. IP Configuration The hub system may be run on SNMP protocol over UDP/IP transport protocol. In this environment, all systems on the Internet, such as netwo[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-21 Configuring Hub Parameters Use the Hub Configuration menu under the Configuration Panel to configure any hub in the stack. This menu is used to configure the repeater and management modules. Use the following menu to select the required hub, or to change the numeric identifier for[...]

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. The following Hub Configuration menu will appear, allowing you to set parameters for the base repeater unit or the network management module. Hub Configuration Return to Previous Panel Hub ID : 1 Position :[...]

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 FlexBus management channel.) Name Any user-defined name for the selected hub. Status The hub may be isola[...]

Fast EtherHub 3500 System User’s Guide 4-24 Configuring the System Hub ID Configuration To change the numeric hub identifier, select Hub ID Configuration from the Hub Configuration: Hub Selection Menu shown above. The following Hub ID Configuration menu will appear. After changing a hub identifier, verify the change with the “Enable Above Setti[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-25 Configuring Port Parameters Use the Port Configuration menu under the Configuration Panel to configure the ports for any hub in the stack. Select the port type for the required hub from the following menu. Port Configuration: Port Selection Menu Return to Previous Panel Select por[...]

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 Port Configuration Menu will open. This menu displays the ID and stack position of the selected hub, and also allows you to enable/disable any repeater port in the selected hub. Port Configur[...]

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 SEM Port Configuration Menu will open. This menu allows you to configure various communication parameters for this module. SEM Port Configuration Return to Previous Panel Hub ID : 1 Positi[...]

Fast EtherHub 3500 System User’s Guide 4-28 Configuring the System Menu 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). Port ID Identifies this port as the SmartExtender Modul[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-29 Defining Backup Ports Use the Port Backups menu under the Configuration Panel to define up to 6 master/slave port pairs. If the connection to the master port fails, the slave port will automatically take over. For greater reliability, primary and secondary ports should be located [...]

Fast EtherHub 3500 System User’s Guide 4-30 Configuring the System Port Intrusion Control Use the Port Intrusion Control menu under the Configuration Panel to restrict access for any port to an authorized source address. Select the required hub from the following menu. Port Intrusion Control: Hub Selection Menu Return to Previous Panel Hub 1 Port[...]

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

Fast EtherHub 3500 System User’s Guide 4-32 Configuring the System Downloading System Software via a TFTP Server Use the TFTP Download command under the Configuration Panel to download firmware updates into the hub. You may upgrade firmware from a server attached to the local network, or remotely via a serial link using TFTP over SLIP. Specify th[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-33 Menu items are briefly described in the following table. Field Description Download Server IP IP address of a TFTP server. (TFTP stands for Trivial File Transfer Protocol.) Download Filename The *.bin file to download. Download Mode You can download to permanent flash ROM or tempo[...]

Fast EtherHub 3500 System User’s Guide 4-34 Configuring the System Xmodem Download Use the Xmodem Download menu under the Configuration Panel to download firmware to the hub. The Xmodem protocol is used to transfer binary files over a PC connection (i.e., using terminal emulation or modem access software). Specify the download mode and select Pro[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-35 Changing User Passwords The on-board configuration program includes two fixed user types, including Admin and Guest. The access privilege is Read/Write for administrator and Read Only for guest. The default user names are “adm in” and “guest,” without passwords. The admini[...]

Fast EtherHub 3500 System User’s Guide 4-36 Configuring the System Console Lockout This function instructs the configuration program to automatically lock the console if no keyboard input is detected for the defined delay time. The Console Lockout menu is shown below. Console Lockout Return to Previous Panel Status : ON Delay Time : 20 Minutes Re[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-37 Segment Statistics Displays statistics for the stack’s segments. These values can be used to indicate the approximate load balance in your stack. If the loading is severly unbalanced, you may consider adjusting your network connections or segment assignments. The Segment Statist[...]

Fast EtherHub 3500 System User’s Guide 4-38 Configuring the System Hub Statistics Displays statistics for any hub in the stack. Select the required hub from the following menu. Hub Statistics: Hub Selection Menu Return to Previous Panel Hub 1 Statistics ... Hub 2 Statistics ... Hub 3 Statistics ... Hub 4 Statistics ... Hub 5 Statistics ... Hub 6 [...]

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). Frames Number of frames passing through this devic[...]

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 Ethernet variables. If any of the error indications are extremely high, there may be a problem with the port, the attached device, or the network cabling. (The System Diagnostics section in Appendix[...]

Fast EtherHub 3500 System User’s Guide Configuring the System 4-41 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). Port ID Port identifier on the hub. Readable Frame[...]

Fast EtherHub 3500 System User’s Guide 4-42 Configuring the System Statistics for SmartExtender Module Statistics for the SmartExtender Module includes the basic Ethernet variables shown below. Screen statistics are not automatically refreshed from the agent. Select Refresh Statistics to update the displayed values. The values displayed have been[...]

Hardware Reference 5-1 Chapter 5: Hardware Reference Before connecting any network device to this hub, please review 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 the menu-driven interface. This chapter describes the hardware fe[...]

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 network connections for each port, the hub’s connection to the stack, and the status of the on-board SNMP agent. (Note that Master and Backup LEDs are not [...]

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-3 There are four optional SmartExtender Modules as described under 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 EM3551-FX-ST for 100BASE-FX EM3551-FX-SC for 1[...]

Fast EtherHub 3500 System User’s Guide 5-4 Hardware Reference SNMP Color: Green Label: SNMP Function: Indicates that an SNMP frame is being received by the Agent. LED Activity Condition Indication BLINKING LIGHT ON Hub is presently receiving an SNMP frame. NO LIGHT OFF Hub is not receiving an SNMP frame. Table 5.5 SNMP Indicator In a stacked syst[...]

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-5 Management Agent Indicators Color: Green Labels: Master, Backup Function: Displays the status of on-board management agents. LED Condition Indication Master ON SNMP module is installed and functioning as the primary agent. OFF SNMP module is not installed or has failed. Backup ON SNMP [...]

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 5.7 Hub Indicators Serial Color: Green Label: Se[...]

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 position in a stacked system. This LED shows if the hub is connected to the stack’s backplane and the FlexBus cable properly terminated. The unit has an auto-terminate function that is en[...]

Fast EtherHub 3500 System User’s Guide 5-8 Hardware Reference There are 5 LEDs representing the percentage of network bandwidth in use by the attached (or isolated) segment. When active, these LEDs look like a stereo’s equalizer display. The hub updates this display every 0.5 seconds. For example, if network utilization reaches 1%, the LED labe[...]

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-9 For example, if packet collisions reach 1%, the LED labeled 1 will 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 succession. F When more than 31 consecutive collisions[...]

Fast EtherHub 3500 System User’s Guide 5-10 Hardware Reference Disable - Disabling a port is the same as m anually partitioning it, except that you m u st also m anually reconnect it. For exam ple, to prevent a certain dev ice from accessing the netw ork or to reduce network traffic y ou m ay opt to disable the port. No incoming pack et transm is[...]

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-11 Link - The Link LED should light up when a device (e.g., com puter, 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 both the hub and connected device are powered on. [...]

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

Fast EtherHub 3500 System User’s Guide Hardware Reference 5-13 Network Connections The front panel on the Fast EtherHub 3500 Series provides the following network options: • Connections to end-node devices using RJ-45 station ports. • Cascaded connection to a compatible switch or router using the daisy-chain port. • Backbone connection usin[...]

Fast EtherHub 3500 System User’s Guide 5-14 Hardware Reference Serial Port Use the UTP cable and connection converter provided with your unit for plugging into a PC or modem as described in Chapter 4. Note that configuration options provided for the Fast EtherHub- 12i are limited because this model does not include an agent. Moreover, configurati[...]

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 shows the rear panel, which includes a primary power supply, a slot for an optional secondary power supply module, and two backplane connectors used for stac kin g u p to 6 hubs. For easier m anag em ent[...]

Fast EtherHub 3500 System User’s Guide 5-16 Hardware Reference FlexBus 3500 Ports The unit has two SCSI FlexBus connectors labeled In and Out for combining the hub with other compatible hubs to form a single repeater stack. The FlexBus 3500 stack cable that comes with this package is used specifically for these ports. Only hubs cascaded through t[...]

Troubleshooting A-1 Appendix A: Troubleshooting Diagnosing Hub Indicators The Fast EtherHub 3500 Series can be easily monitored through its comprehensive panel indicators. These indicators assist the network m anag er in identifying problem s the hub may encounter. This section describes common problems you may encounter and possible solutions. Sym[...]

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 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 f[...]

Fast EtherHub 3500 System User’s Guide Troubleshooting A-3 then communications are set to half duplex by default. Based on this type of industry-standard connection policy, if you are using a full- duplex dev ice that does not support auto-neg otiation, communications can be easily lost (i.e., reset to the wrong mode) whenever the attached device[...]

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 problem down by implementing the new changes, one step at a time. Ensure that cable distances and other physical aspects of the installation do not exc[...]

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 devices which use a standard LAN interface (e.g., a workstation, server or router). RJ-45 daisy-chain ports (MDI) can be cascaded to a station port on similar networking devices (e.g., a switch).[...]

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 the hub to a management device. The on-board menu-driven configuration program can be accessed from a terminal, a PC running a terminal emulation program,[...]

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

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 Connection from Hub’s 9-Pin Serial Port t[...]

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 ----------- SGND --------- 7 6 &l[...]

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 RJ-45 shielded station ports (Port 12 provides MD[...]

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 Access Method CSMA/CD, 10 Mbps or 100 Mbps Standa[...]

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 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 undesi[...]

Fast EtherHub 3500 System User’s Guide D-2 Regulatory Standards Note: In order to maintain compliance with the limits of a Class A digital device, Accton requires that you use a quality interface cable when connecting to this device. Changes or modifications not expressly approved by Accton could void the user’s authority to operate this equipm[...]

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 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 [...]

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 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 List[...]

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 ein angefeuchtetes Tuch. 3. Das produkt gerät nich[...]

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 operation, please check the adapter configuration setti[...]

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 enhancements and new features. Minor software updates are free of charge. If greater changes have been made to the software, Accton offers software upgrade services at a specially reduced [...]

Fast EtherHub 3500 System 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 by fax, mail or phone. • Send your technical questions by fax to: International Headquar[...]

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 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 i[...]

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 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 [...]

Fast EtherHub 3500 System User’s Guide E-6 Product Support Services Accton Offices Accton Technology Corporation International 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: 886-3-5770-654 Taipei: Phone: 886-2-577-1220 to 9 f[...]

Fast EtherHub 3500 System User’s Guide Product Support Services E-7 Ordering Information • Fast EtherHub-12i (EH3512I-TX) Intellig ent Fast Ethernet Stackable Hub w ith 12 100BASE-TX Ports • Fast EtherHub-12mi SNMP (EH3512M-TX) Intellig ent Fast Ethernet Stackable Hub w ith 12 100BASE-TX Ports; including SNMP Managm ent Support • SmartExten[...]

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 of nodes is 1024. 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using 2-pairs of Category 5 twisted-pair cable. [...]

Fast EtherHub 3500 System U ser’s Guide 2 Glossary Collision A condition in which two packets transmitted over a medium interfere with each other. Their interference makes both signals unintelligible. The transmitting devices have to halt transmission for a random period of time before trying to send data again. Note that collisions do not occur [...]

Fast EtherHub 3500 System User’s Guide Glossary 3 FlexBus Ports SCSI ports found at the backplane of the EtherHub labeled In and Out. These ports are used for linking the hub to other compatible hubs using Accton’s FlexBus 3500 cable. IEEE 802.3 Standard Standard for the physical and electrical connections in local area networks developed by th[...]

Fast EtherHub 3500 System U ser’s Guide 4 Glossary MIB (Management Information Base) An acronym for Management Information Base. It is a set of database objects that contains information about the device. MII (Media Independent Interface) IEEE’s specifications for a multi-media interface that supports 100BASE-TX, 100BASE-T4, 100BASE-FX or 10BAS[...]

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 properly installed network adapter card. (For port 12, the selector switch must be set to  MDI-X .) STP (Shielded Twisted-Pair) 100 W Category 5 twisted-pair wire covered with an exter[...]

Index 1 Index A Accessing the Configuration Management Program • 4-5 AccView/Open • 1-4 Applications Attaching the Stack to Multiple Segments • 3-6 Attaching the Stack to One Segment • 3-5 Connecting Remote Stacks • 3-12 Connecting to the Network Backbone • 3-15 Extending the Ne tw ork with A lte rna te Connec tions • 3-9 Interconnect[...]

Fast EtherHub 3500 System User’s Guide 2 Index E EMI Warning • D-1 F Fast EtherHub 3500 • 1-1 Fast EtherHub-12i • 1-2 Fast EtherHub-12mi SNMP • 1-3 FCC Warning • D-1 Filtering Packets • 1-9 Flash ROM • 4-33 FlexBus 3500 Management Link • 3-2 FlexBus 3500 Ports • 5-16 Stack In • 5-16 Stack Out • 5-16 Forwarding Packets • 1-[...]

Fast EtherHub 3500 System User’s Guide Index 3 Maximum Segment Length • 2-9 Multi-segment Architecture • 3-1 Multiple Agents • 3-3 N Network Connection MDI Daisy-chain Port • 2-6 MDI-X Station Port • 2-4 Verifying • 2-15 Network Connections • 5-13 Network Managment Software • 1-4 O On-board Configuration Program Configuring the Re[...]

Fast EtherHub 3500 System User’s Guide 4 Index S Safety Compliance • D-4 Sample Network Configurations • 3-5 Security Features Intrusion Protection • 3-4 Segment Configuration • 4-19 Segment Statistics • 4-37 Segments Interconnecting • 2-11 Serial Port • 5-6, 5-14 Setting Up Network Connections • 3-1 SmartExtender Module • 1-3, [...]

EH3512I-TX EH3512M-TX E1296-R01 150136-101[...]