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Cabletron Systems SmartSTACK ELH100 Installation And User Manual

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SmartSTACK
ELH100-12/24TX
FAST ETHERNET HUB
INSTALLATION
AND
USER GUIDE
9033060

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Summary of Contents for Cabletron Systems SmartSTACK ELH100

  • Page 1 SmartSTACK ELH100-12/24TX FAST ETHERNET HUB INSTALLATION USER GUIDE 9033060...
  • Page 3 Only qualified personnel should perform installation procedures. Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made.

  • Page 4: Industry Canada Notice

    Notice FCC NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
  • Page 5 CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: THIS LICENSE APPLIES FOR USE OF PRODUCT IN THE FOLLOWING GEOGRAPHICAL REGIONS: CANADA MEXICO CENTRAL AMERICA SOUTH AMERICA BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT. This document is an agreement (“Agreement”) between You, the end user, and Cabletron Systems, Inc.
  • Page 6 Notice If the Program is exported from the United States pursuant to the License Exception TSR under the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in Sections 1 or 2 of this Agreement, You agree not to (i) reexport or release the Program, the source code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania, Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan, Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,...
  • Page 7 BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT. This document is an agreement (“Agreement”) between You, the end user, and Cabletron Systems Sales and Service, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (“Program”) in the package.
  • Page 8 Notice If the Program is exported from the United States pursuant to the License Exception TSR under the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in Sections 1 or 2 of this Agreement, You agree not to (i) reexport or release the Program, the source code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania, Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan, Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,...
  • Page 9 CABLETRON SYSTEMS LIMITED PROGRAM LICENSE AGREEMENT IMPORTANT: THIS LICENSE APPLIES FOR THE USE OF THE PRODUCT IN THE FOLLOWING GEOGRAPHICAL REGIONS: EUROPE MIDDLE EAST AFRICA ASIA AUSTRALIA PACIFIC RIM BEFORE OPENING OR UTILIZING THE ENCLOSED PRODUCT, CAREFULLY READ THIS LICENSE AGREEMENT.
  • Page 10 Notice If the Program is exported from the United States pursuant to the License Exception TSR under the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in Sections 1 or 2 of this Agreement, You agree not to (i) reexport or release the Program, the source code for the Program or technology to a national of a country in Country Groups D:1 or E:2 (Albania, Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan, Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China,...

  • Page 11: Declaration Of Conformity

    Compliance Engineering Manager ___________________________________ Title Rochester, NH, USA ___________________________________ Location 9033060 89/336/EEC 73/23/EEC Cabletron Systems, Inc. 35 Industrial Way PO Box 5005 Rochester, NH 03867 Mr. J. Solari Cabletron Systems Limited Nexus House, Newbury Business Park London Road, Newbury Berkshire RG13 2PZ, England...

  • Page 13: Table Of Contents

    Installing an Optional Module into the Hub ..... . 17 Using a Switch/Media Module....... . 18 Connecting a Terminal to the Console Port .
  • Page 14 3. ELH100-12/24TX User Interface ........27 Overview ..........27 User Access .
  • Page 15 Port Backup ......... . 70 Switch Module Statistics ....... . 71 MIB Browser .

  • Page 17: Preface

    PREFACE Purpose This guide provides information about the features and applications of the Cabletron ELH100-12/24TX dual-speed hub as well as instructions for configuring and monitoring the hub. Audience This guide is intended for Ethernet local area network (LAN) administrators and Management Information Systems (MIS) personnel with the following background: •...

  • Page 18: Other Conventions

    Other Conventions This guide uses the following typographical conventions: • Initial Caps • [Enter] • ALL CAPS • courier font Screen messages and user prompts. • Selection • Field Organization Chapter 1. Product Overview: Describes the features of the hub, front and rear panel components and application examples.

  • Page 19: Product Overview

    With a Class II rating, they can also be easily cascaded to additional 10 or 100 Mbps hubs. With an optional switch/media module, you can link the hub’s 10 Mbps and 100 Mbps segments together to form a bridged network, allowing traffic to pass between the segments when required.

  • Page 20: Features

    • Ports: - 12/24 dual-speed 10Base-T/100Base-TX ports using RJ-45 connectors (MDI-X) Note: Port 12/24 includes a toggle switch for MDI-X or MDI connection - 2 SCSI connectors for stacking hubs - 1 redundant power unit socket • Optional Switch/Media Modules:...
  • Page 21 - Firmware upgrades using the console port or in-band with TFTP • LED Indicators: - System: Power, Switch - 10 and 100 Mbps segments: Activity, Collision - 10Base-T/100Base-TX Ethernet hub ports: link/partition/speed - Switch/Media modules: Collision, Activity, Full/Half duplex, Link - Agent Module: Active 9033060 Product Overview 3...

  • Page 22: Front Panel

    Lights steady green to indicate power is supplied to the hub. Off indicates no power is supplied to the hub. Lights steady green to indicate that the Switch/Media Module is active. Flashing indicates that another module in the stack is active. (If the active module fails,...

  • Page 23: Optional Modules

    Mode switch: If the attached device must operate at full duplex, set this switch to Full; otherwise, set it to Half. Port LEDs: See Table 1-3 for details. Console port: Male DB-9 connector configured as a...
  • Page 24 Figure 1-3 shows the Collision, Activity, Full/Half duplex, and Link LEDs for the switch/media modules. These LEDs are positioned to the left of the ports. In addition, the 10Base-T/100Base-TX module includes a 100M LED to right of the ports to indicate speed (where On indicates that the port is operating at 100 Mbps, and Off indicates 10 Mbps).

  • Page 25: Rear Panel

    Up to 6 hubs can be stacked together to form a dual-speed network. An optional switch/media module can be added to any hub in the stack to bridge traffic between the 10 Mbps and 100 Mbps repeater buses as required.

  • Page 26: Non-Volatile Parameter Storage

    A TFTP or XMODEM software download is invoked via the console menus. A TFTP download can also be invoked via SNMP or Web-based manager. Non-volatile Parameter Storage All important operating parameters, such as management data and port configurations, are stored in non-volatile Flash memory. These values are retained when the hub experiences power interruptions or is powered down for normal maintenance.

  • Page 27: Rmon

    However, if the attached device must operate at full duplex, then it must also support auto-negotiation. Otherwise, you can set the mode manually using the mode selection switch on the module, or via the management agent. The 100Base-FX module does not support auto-negotiation. You need to configure the duplex setting via the front panel switch.

  • Page 28: Bootp

    The port LEDs on the hub unit provide a quick and accurate display of the integrity of hub connections, indicating link and partition for each of the ports. The port LEDs on the optional switch/media modules indicate Link, Activity, Collision, Full/Half duplex mode, and speed (100M) for each of the ports.
  • Page 29 Using the ELH100-12/24TX hub in an application example for client/ server networks, users can be connected directly to the local network, regardless of whether they are operated at either 10 or 100 Mbps. Up to 144 connections can be supported by stacking up to 6 hubs. Being a Class II hub, additional 10Mbps or 100 Mbps hubs can be attached to the stack.

  • Page 31: Installation

    2. INSTALLATION Inspecting Your Shipment When you receive the shipment of your hub, check the package contents and make sure you have the following items: • ELH100-12/24TX dual speed Ethernet hub • Mounting ears and mounting screws • Four rubber feet •...

  • Page 32: Mounting The Hub Or Stack On A Table Or Shelf

    Mounting the Hub or Stack on a Table or Shelf You can mount a standalone hub (or a stack of up to six hubs) on a table or shelf. Locate the hub (stack) in a position that allows access to the front panel RJ-45 ports, visibility of the port LEDs, and access to the power cord.

  • Page 33: Mounting The Hub In A Rack

    Mounting the Hub in a Rack The hub ships with two (2) multi-position mounting ears and four (4) mounting screws. The mounting screws are used to attach the mount- ing ears to the hub. Once the ears are attached to the hub, you will need to provide appropriate screws to mount the hub in a rack.

  • Page 34: Connecting Hubs To The Stack's Backplane

    Connecting Hubs to the Stack’s Backplane The hub ships with a stack cable. The hubs support a power-off bypass feature which allows traffic to pass freely across the stack’s back- plane, even if one or more of the hubs are powered off.

  • Page 35: Installing An Optional Module Into The Hub

    Remove the blank metal plate (or a previously installed module) from the appropriate slot by removing the two screws with a flat-head screwdriver. A switch/media module can be installed in the upper slot on the front of the hub. An Agent Module can be installed in the lower slot on the front of the hub.

  • Page 36: Using A Switch/Media Module

    The switch/media module passes traffic between the source and destination segment at full duplex, using store-and-forward processing. Multiple switch/media modules may be installed in a stack, but only one of the modules will actively bridge the 10/100 Mbps repeater buses. If the active switch/media module fails, it must be removed from the hub to activate the standby module.

  • Page 37: Connecting A Terminal To The Console Port

    Connecting a Terminal to the Console Port The console port is a serial RS-232 interface port that enables a connection to a terminal for performing hub monitoring and configuration functions. The terminal may be a PC or workstation running terminal emulation software, or a terminal configured as a Data Terminal Equipment (DTE) connection.

  • Page 38: Remote Management Via The Console Port

    Connect one end of the interface cable directly to the Agent Module’s console port and tighten the retaining screws. Connect the other end of the interface cable to a terminal (in some instances, an adapter may be required to make this connection). From your terminal, start the terminal emulation program.

  • Page 39: Agent Module

    You can also make a remote network connection (via modems) to the serial port on the Agent Module using SLIP protocol over TCP/IP. Using this kind of connection, the system functions similar to a router, allowing you to manage the hub or other attached devices using Telnet, a web browser, or network management software.

  • Page 40: Powering The Hub

    Powering the Hub To supply power to the hub, connect the power cord to the hub and to a grounded three-prong wall outlet (Figure 2-5). See Appendix A "Technical Specifications" on page 91 for more information regarding specific international power cord requirements. Figure 2-5.

  • Page 41: Network Cable Requirements

    Interface Type 10Base-T 100Base-TX Fiber Table 2-4 specifies the fiber types, bandwidth requirements, and length constraints for the Fast Ethernet fiber interface on the fiber optic switch/ media modules. Table 2-4. Fast Ethernet Fiber Specifications Interface Type Fiber Type 100Base-FX (SC...

  • Page 42: 10Base-T/100Base-Tx Ports

    For connections to other hubs or switches, Port 12 (24) on the ELH100- 12TX (ELH100-24TX) hub includes a switch for MDI or MDI-X selection. If an MDI port is not available on the hub, a crossover cable may be necessary (refer to MDI/MDI-X Crossover Cable Wiring on page 94).

  • Page 43: 100Base-Fx Fiber Ports

    100Base-FX Fiber Ports The 100Base-FX Fiber port uses SC connectors. Figure 2-7 shows an SC fiber connector being inserted into a fiber port on the ELH100-12/24TX. Figure 2-7. Inserting an SC Fiber Connector into a Fiber Port The fiber uplink modules employed (Table 2-6) support multi-mode 62.5/ 125mm fiber.

  • Page 45: Elh100-12/24Tx User Interface

    3. ELH100-12/24TX USER INTERFACE Overview Access is gained to the console menus by connecting a terminal to the console port (with a direct cable connection or over modems), or using Telnet to access the Agent Module over the network. These menus allow you to reconfigure the hub, as well as to monitor the status and performance of the hub or the attached stack.

  • Page 46: User Access

    User Access Once a direct connection to the serial port or a Telnet connection is established, the login screen for the on-board configuration program appears You may need to press Enter a few times to display the screen. The default user names are “admin” and “guest,” with corresponding default passwords “admin”...

  • Page 47: Menu Hierarchy

    Menu Hierarchy Figure 3-2 shows the ELH100-12/24TX user interface menu hierarchy. Figure 3-2. ELH100-12/24TX User Interface Menu Hierarchy 9033060 ELH100-12/24TX User Interface 29...

  • Page 48: Main Menu

    Displays hardware/firmware versions for hub, isolates/attaches hub’s repeater segments, and shows if an Agent Module or switch/media module is installed. If an Agent Module is installed, shows its bootup option, MAC address, hardware/ firmware versions, and the Baud rate of the serial port.

  • Page 49: System Information Menu

    XMODEM Download User Password Console Configuration Hub Statistics Port Statistics System Information Menu Use the System Information menu to display descriptive information about the hub, or for quick system identification. Figure 3-4 shows and the accompanying table describes the System Information menu Figure 3-4.

  • Page 50: Reset

    Reset Use the Restart Hub command under the Main Menu to reset the management agent. The reset screen includes an option to return all configuration parameters to their factory defaults. The hub takes approximately two minutes to restart. There is no apparent activity during this time. You should wait until the restart has completed.

  • Page 51: System Configuration Menu

    System Configuration Menu Use the System Configuration menu to configure the Agent Module’s Internet Protocol (IP) parameters, define the maximum number of Telnet sessions allowed, and specify to which segment (10 Mbps or 100 Mbps) the management agent is attached. Figure 3-5 shows and the accompanying table describes the System Configuration Menu.
  • Page 52 SLIP IP SLIP Subnet Mask SLIP Gateway Max # of allowed Telnet sessions Agent Ethernet Port Attached to 34 ELH100-12/24TX User Interface IP address of the Agent Module used when accessing the configuration program via an out-of-band SLIP connection to the serial port. The hub does not allow the SLIP IP address to be the same as the IP address.

  • Page 53: Snmp Configuration Menu

    SNMP Configuration Menu Use the SNMP Configuration Menu to display and modify parameters for the Simple Network Management Protocol (SNMP). The Agent Module monitors the hardware status of the hub (or connected stack), as well as the traffic passing through the ports. A Network Management Station (NMS) can access this information using third-party network management software.

  • Page 54: Snmp Communities

    SNMP Communities Community Name ------------ 1. public <APPLY> Type a community name, 20 characters or less Use <TAB> or cursor keys to move, <SPACE> to toggle, <ENTER> to select, <Ctrl-F> to move forward a character, <Ctrl-B> to move back a character Selection Community Name Access...

  • Page 55: Snmp Trap Destinations

    SNMP Trap Destinations Figure 3-8. SNMP Trap Destinations IP Address -------- <APPLY> Use <TAB> or cursor keys to move, <SPACE> to toggle, <ENTER> to select, <Ctrl-F> to move forward a character, <Ctrl-B> to move back a character Selection IP Address Community Name Status 9033060...

  • Page 56: Hub Configuration Menus

    Indicates whether this device has 12 or 24 repeater ports. Indicates whether an Agent Module is installed in this hub. Indicates which switch/media module is installed in this hub. Highlight “Display Details” and press <Enter> to access the configuration parameters for the hub.
  • Page 57 Number of Ports: 12 100M backplane: Isolated SNMP Agent ========== H/W Ver: MAC Address: 00-00-1D-3F-2A-E1 Send Initialization String: NO Switch/Media Module =================== <OK> <CANCEL> Isolate or attach the 10 Mb/s segment Description Hub identifier in stack. Serial number of this hub.
  • Page 58 Serial Initialization String Switch Module Status 40 ELH100-12/24TX User Interface Yes, to send the initialization string to an attached modem. No, if there is a direct connection from the serial port to a Indicates if a switch/media module is installed. ELH100-12/24TX...

  • Page 59: Port Configuration Menu

    Select Administrative Status Control from the Port Configuration screen, then select the port group to configure, either “1 thru 12,” “13 thru 24,” or “Switch/Media Module” (if installed). The following screens show the configuration options. Port Administrative Status Control Menu Figure 3-11.

  • Page 60: Module Port Configuration Menu

    Module Port Configuration Menu The switch/media module configuration menu is accessible only if a module is installed in the hub’s upper slot. The switch/media modules have two internal ports that are connected to the hub’s internal repeater segments. The configuration screen and options are displayed below.

  • Page 61: Backup Port Control Menu

    Backup Port Control Menu Select Backup Port Control from the Port Configuration screen to define up to 15 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 on different hubs.

  • Page 62: Tftp Download Menu

    TFTP Download Menu Use the TFTP Download menu to load software updates into the hub over the network. The download file should be an ELH100-12/24TX binary file from Cabletron; otherwise, the agent module will not accept it. The success of the download operation depends on the accessibility of the TFTP server and the quality of the network connection.

  • Page 63: Xmodem Download Menu

    XMODEM Download Menu Use the Xmodem Download command to update available software in the hub via an out-of-band connection to the serial port on the Agent Module. The download file should be an ELH100-12/24TX binary file from Cabletron; otherwise, the agent module will not accept it. This command specifies direct download from an attached device via the serial port.

  • Page 64: User Password Menu

    User Password Menu The User Password menu is used to display or modify user names and passwords for the on-board configuration program. There are two user types, Administrator and Guest. Only the Administrator has write access for parameters governing the SNMP agent. You should therefore assign a user name and password to the Administrator as soon as possible, and store it in a safe place.

  • Page 65: Console Configuration Menu

    Console Configuration Menu The Console Configuration menu is used to configure the console connected to the hub’s serial port. The console parameters are described in the following figure and table. Figure 3-17. Console Configuration Menu Automatic Logout Status: Automatic Logout Delay Time: Auto-Refresh Period: <APPLY>...

  • Page 66: Hub Statistics Menu

    Hub Statistics Menu The Hub Statistics screens display statistics for the 10 and 100 Mbps stack segments. These values can be used to indicate the approximate loading for each segment. You can use the Hub Statistics Overview screen to display key statistics for all hubs in a stack or detailed statistics for each individual hub.
  • Page 67 Figure 3-19. Detailed Hub Statistics Screen Statistic ------------- -------------- -------------- Readable Frames Readable Octets CRC Errors Alignment Errors Frames Too Long Short Events Runts Collisions Late Events Data Rate Mismatch Auto Partitions Total Errors <REFRESH STATISTICS> <AUTO-REFRESH STATISTICS> <RESET HUB STATISTICS> <OVERVIEW SCREEN>...

  • Page 68: Port Statistics Menu

    Port Statistics Menu Use the Port Statistics screen to display key statistics for each port. Overall statistics on the traffic passing through each port are displayed. This information can be used to identify potential problems with the hub (such as a faulty port). Select the required port from the Port Statistics: Port Selection Menu.
  • Page 69 Auto Partitions Number of times this port has been automatically partitioned due to jabber. Total Errors Total number of errors, including FCS, Alignment, Frames Too Long, Short Events, Late Events, Jabber, and Data Rate Mismatches detected on this device. LSA Changes Number of times the source address has changed.

  • Page 71: Configuring & Monitoring The Hub

    4. CONFIGURING & MONITORING THE HUB Common Tasks The hub console menus allow you to modify default hub settings and configure the hub for network management. They also allow you to monitor hub performance and status. See Chapter 3, ELH100-12/24TX User Interface on page 27, for an overview of the menu hierarchy and a description of all menus.

  • Page 72: Assigning An Ip Address

    To enter a password, do the following: Select Password from the System Configuration Menu and press [Enter]. Enter a password containing 1 to 14 alphanumeric characters. The password is not case sensitive. For verification, you are asked to enter your password again. If both entries agree, the new password is stored.

  • Page 73: Connecting Via Telnet

    Connecting via Telnet You can connect to the ELH100-12/24TX hub from a remote location using the Telnet application. This application allows you to establish in- band access to the console menus. To connect to the ELH100-12/24TX hub via Telnet, do the following: Assign an IP address using the System Configuration Menu.

  • Page 74: Viewing Hub Statistics

    Viewing Hub Statistics To view hub statistics, do the following: Select Hub Statistics from the Main Menu. The screen lists the main statistical counts for both segments on the hub simultaneously. Select <DETAIL> from the Hub Statistics Overview screen. The screen lists a summary of sum total statistics for all ports on the hub.

  • Page 75: Downloading Via Tftp

    When the system prompts, confirm that you want to proceed. The following message prompt displays: Receiving image... Send the file using the XMODEM protocol from your computer application (the procedure varies depending upon the application used). When the XMODEM procedure finishes, a message appears stating that the system is initializing.

  • Page 76: Configuring Port Operation

    10Base-T/100Base-TX module or the Full/Half toggle switch on the 100Base-FX module. Spanning Tree The Switch/Media modules do not support Spanning Tree, which is intended to prevent network loops from forming. There is no loop detection. The user is cautioned to understand and avoid configurations that can create a loop.

  • Page 77: Configuring Bootp

    Configuring BootP The BootP protocol allows you to automatically configure the hub’s IP address information. Enabling this feature greatly speeds up device configuration, especially when a large number of devices are installed. A BootP server must be operating on the network and be properly configured for this option to work.

  • Page 79: Web-Based Management

    5. WEB-BASED MANAGEMENT As well as the menu-driven system configuration program, the Agent Module provides an embedded HTTP Web agent. This agent can be accessed by any computer on the network using a standard Web browser (Internet Explorer 3.0 or above, or Netscape Navigator 3.0 or above). Using the Web browser management interface you can configure a hub (or stack attached via the backplane) and view statistics to monitor network activity.

  • Page 80: Main Menu

    Main Menu Menu System Information Stack Browser MIB Browser RMON Browser Help 62 Web-Based Management Description Provides system description, including system name and other data. Provides a graphical representation of the stack, access to SNMP agent, hub and port parameters. Access to MIB II, Repeater MIB, Ethernet-Like MIB and Cabletron’s private MIB parameters.

  • Page 81: System Information

    System Information Field System Description System Object ID Sys. Up Time System Name* Contact* Location* System Services * Maximum string length is 255, but the screen only displays 44 characters. You can use the arrow keys to browse the whole string. 9033060 Description System hardware description.

  • Page 82: Stack Browser

    Access to configuration of IP address and SLIP IP address for the SNMP agent. Displays hub configuration data and enables hub to be isolated from the stack backplane. Enables configuration of port parameters, sets port security and port backup features. Access to the Switch/Media Module configuration and statistics. ELH100-12/24TX...

  • Page 83: Front Panel

    Front Panel Select “Stack” then “Front Panel” to display a graphic image of the hub or attached stack. Item [Refresh] Refresh Mode Select 9033060 Description Immediately refreshes front panel status. The scroll-down window includes options for: “autoRefresh” of the front panel every 10 seconds, or “manual”...

  • Page 84: Agent Configuration

    Agent Configuration Select “Agent” then “Agent Configuration” to display IP configuration and other information. Item IP Address Subnet Mask Gateway IP SLIP IP SLIP Subnet Mask SLIP Gateway Agent Attached to 66 Web-Based Management Description IP address of the Agent Module you are managing. Valid IP addresses consist of four numbers, of 0 to 255, and separated by periods.

  • Page 85: Hub Configuration

    Rate at which data is sent between the Agent Module’s serial port and the connected device. The supported baud rate is 9600 bps. Indicates if a switch/media module is installed. Indicates whether this device has 12 or 24 repeater ports. Web-Based Management 67...

  • Page 86: Hub Backplane

    Hub Backplane Select “Hub” then “Hub Backplane” to display information about the hub’s connection to the stack’s backplane. Item Hub ID Backplane ID Backplane Status 68 Web-Based Management Description Hub identifier in the stack. The hub’s segment, 100 Mbps (1) or 10 Mbps (2). Select a segment to display/configure in the Backplane Status field.

  • Page 87: Port Configuration

    Port Configuration Select “Port” then “Port Configuration” to display information about the port’s connection, or to display/configure the port’s security setting. Item Hub ID Port ID Current Speed Set Speed Admin State Link State Partition State Port Security Setting Authentication Address Auto-Learn Action Auto-Learn Status...

  • Page 88: Port Backup

    Port Backup Select “Port” then “Port Backup” to display/configure redundant links. Item Index Primary Hub Primary Port Secondary Hub Secondary Port Action Status 70 Web-Based Management Description Identifier for up to 15 backup port pairs. Hub ID for the master port. Port identifier for the master port.

  • Page 89: Switch Module Statistics

    Switch Module Statistics Select “Switch Module” then “Switch Module Statistics” to display statistics for the switch/media module. Item Readable Frames Readable Octets FCS Errors Alignment Errors Frames Too Long Short Events Runts Collisions Late Events Data Rate Mismatches Broadcast Packets...

  • Page 90: Mib Browser

    MIB Browser The MIB Browser menu allows access to various MIB group data and statistics. This guide provides only a summary of the MIBs supported by the Agent Module. All MIB group objects are as defined by RFC 1213 (MIB II), RFC 2108 (Multi-Segment Repeater MIB), and RFC 1643 (Ethernet-Like MIB).

  • Page 91: Rmon Browser

    RMON Browser The RMON Browser enables access to the RMON data groups supported by the Agent Module. This guide only provides an outline of the menu items available. All Statistics, History, Alarm and Event group parameters are defined by RFC 1757 (RMON MIB). Note that the control table entries can only be set using SNMP-based network management software.

  • Page 92: Ethernet Statistics

    Ethernet Statistics The RMON Manager collects statistics that allow you to quickly determine how the network is performing. Select “Statistics” then “Statistics Entry” to display Ethernet statistics. Item Statistics Index Data Source Drop Events Octets Packets Broadcast Packets Multicast Packets CRC Alignment Errors Undersize Packets Oversize Packets...
  • Page 93 Jabbers Collisions Packets 64 Octets Packets 64 to 127 Octets Packets 128 to 255 Octets Packets 256 to 511 Octets Packets 512 to 1023 Octets Packets 1024 to 1518 Octets Owner Status [Refresh] Refresh Mode Select Values are counted from the time the Control Table entry was created. 9033060 Total number of jabber errors.

  • Page 94: Packets Pie Chart

    Packets Pie Chart Select “Statistics” then “Packets Pie Chart” to display the graphic representation of packet size distribution. Item Packets 64 Octets 64 to 127 Octets 128 to 255 Octets 256 to 511 Octets 512 to 1023 Octets 1024 to 1518 Octets Residual [Refresh] Refresh Mode Select...

  • Page 95: Error Packets Ratio

    Error Packets Ratio Select “Statistics” then “Error Packets Ratio” to display the graphic representation of the distribution of error types. Item Broadcast Packets Multicast Packets CRC Align Errors Undersize Packets Oversize Packets Fragments Jabbers Collisions Residuals [Refresh] Refresh Mode Select Values are counted from the time the Control Table entry was created.

  • Page 96: History Control Entry

    History Control Entry RMON can be used to create a record of network utilization, packet types, errors and collisions. You need a historical record of activity to track down intermittent problems. Historical data can also be used to establish normal baseline activity, which may reveal problems associated with high traffic levels, broadcast storms, or other unusual events.

  • Page 97: History Data Entry

    History Data Entry Select “History” then “History Data Entry” to display the data recorded for items in the history control table. Item History Index Refresh Time Interval Sample Index Interval Start Drop Events Octets Packets Broadcast Packets Multicast Packets 9033060 Description An index that uniquely identifies an entry in the History Control table.
  • Page 98 CRC Alignment Errors Undersize Packets Oversize Packets Fragments Jabbers Collisions Utilization [Refresh] Refresh Mode Select Values are counted from the time the Control Table entry was created. 80 Web-Based Management Number of packets received during this sampling interval that had a length (excluding framing bits but including FCS octets) between 64 and 1518 octets, inclusive, but had either a bad Frame Check Sequence (FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of...

  • Page 99: Rate Bar Chart

    Rate Bar Chart Select “History” then “Rate Bar Chart” to display the recorded rate of packets, broadcasts, multicasts and collisions collected for the selected segment. The scale for the graphic display is automatically adjusted to present the best view possible. (However, the smallest increment on the vertical axis is limited to 0.05.).

  • Page 100: Utilization

    Utilization Select “History” then “Utilization” to display the percentage of bandwidth utilized over the sample period. Item Utilization [Refresh] Refresh Mode Select Values are counted from the time the Control Table entry was created. 82 Web-Based Management Description Displays the bandwidth utilization for the selected segment. History Index selections include: (1) 100 Mbps segment with utilization incremented every 30 seconds, (2) 100 Mbps segment with utilization incremented every 1800 seconds, (3)

  • Page 101: Alarm

    Alarm The Alarm and Event Groups allow you to record important events or immediately respond to critical network problems. The Alarm and Event Control Tables are used together to define specific criteria that will generate response events. Remember that the Web Agent can only display control entries.
  • Page 102 Falling Threshold Rising Event Index Falling Event Index Owner Status 84 Web-Based Management When the current sampled value is less than or equal to this threshold, and the value at the last sampling interval was greater than this threshold, a single event will be generated. A single event will also be generated if the first sample after this entry becomes valid is less than or equal to this threshold and the associated alarmStartupAlarm is equal to fallingAlarm(2) or...

  • Page 103: Event Table

    Event Table Select “Event” then “Event Table” to display the action to take when an alarm is triggered. The response to an alarm can include logging the alarm in a database or sending a message to a trap manager. Item Event Index Description Type...

  • Page 104: Log Table

    Log Table Select “Event” then “Log Table” to display each time an event was triggered. Note that there are no display windows associated with the Alarm and Event groups other than the control and log tables. Item Event Index Refresh Time Interval Log Index Time Description...

  • Page 105: Snmp Management

    6. SNMP MANAGEMENT The SNMP Protocol SNMP (Simple Network Management Protocol) is a communication protocol designed specifically for the purpose of managing devices or other elements on a network. Network equipment commonly managed with SNMP includes hubs, switches, routers, and host computers. SNMP is typically used to configure these types of devices for proper operation in their network environment, as well as to monitor them to evaluate their performance and detect potential problems.

  • Page 106: Mib Objects

    There are three main operations defined in SNMP: • GET operations read information from the managed device, such as those used to obtain status or statistical data. • SET operations change a functional parameter on the device, such as those used to configure Port Speed or to initiate a software download.

  • Page 107: Rfc 2108 (Multi-Segment Repeater)

    This MIB reports information about the protocols and network interfaces supported on the agent itself, as well as other general information. The MIB is divided into a number of groups, each of which corresponds to a specific protocol or set of information. Some groups are defined in other RFC documents.

  • Page 108: Compiling Mib Extensions: Cabletron Website

    Compiling MIB Extensions: Cabletron Website The MIBs supported by the ELH100-12/24TX hub must be compiled into the SNMP network management platform before the hub can be managed. The supported MIBs are available using Cabletron’s website http://www.cabletron.com The four standard MIB specifications listed above with which the ELH100-12/24TX hub is compliant are generally available with the SNMP management platform.

  • Page 109: Appendix A. Technical Specifications

    APPENDIX A. TECHNICAL SPECIFICATIONS General Standards Compliance IEEE 802.2 Local Area Networks, Logical Link Control (LLC) IEEE 802.3 CSMA/CD 9 (ISO/IEC 8802-3) IEEE 802.3i 10Base-T (ISO/IEC 8802-3, clause 14) IEEE 802.3u 100Base-TX (ISO/IEC 8802-3, clause 25) IEEE 802.3u 100Base-FX (ISO/IEC 8802-3, clause 26) EIA RS-232C (DTE-to-DCE) EIA RS-310C (19-inch rackmount) Certification...

  • Page 110: Electrical Specifications

    Electrical Specifications Input voltage: Input frequency: Maximum power consumption: Physical Height: Length: Width: Weight: 92 Technical Specifications 100-240 VAC 50-60 Hz 50 VA 2.5 in. (6.3 cm) 7.9 in. (20 cm) 17.3 in. (44 cm mountable in a standard 19 in. rack) 9.92 lb.

  • Page 111: Port Specifications

    Port Specifications Console Port Table A-1 shows the console port pin assignments. Table A-1. RS-232 Console Port Pin Assignments 10Base-T and 100Base-TX Ports Table A-2 shows the 10Base-T/100Base-TX pinouts. These ports are wired MDI-X. All undefined pins are not used. Table A-2.

  • Page 112: Mdi/Mdi-X Crossover Cable Wiring

    Figure A-1 shows the wiring scheme for implementing a crossover cable if needed for connection to the hub’s 10Base-T or 100Base-TX ports. Such a cable may be required when connecting the hub to another hub or a switch device. Figure A-1. External Crossover Cable Wiring Power Cord Set Requirements The wide-range input feature of the ELH100-12/24TX Ethernet hub permits it to operate from any line voltage between 100 and 240 VAC.

  • Page 113: Country-Specific Requirements

    Country-Specific Requirements Table A-3 lists the power cord set requirements by country and identifies the accredited agency within that country. Table A-3. Power Cord Set Requirements by Country Country Australia Austria Belgium Canada Denmark Finland France Germany Italy Japan Netherlands Norway Sweden Switzerland...
  • Page 114 Note 2 Flexible cord must be Type SV, SJ, SPT or equivalent, No. 18 AWG, 3- conductor. Wall plug must be a two-pole grounding type with a NEMA 5- 15P (15A, 125V) or NEMA 6-15P (15A 250V) configuration. Note 3 Appliance coupler, flexible cord, and wall plug must bear a “T”...

  • Page 115: Appendix B. Acronyms & Abbreviations

    APPENDIX B. ACRONYMS & ABBREVIATIONS Term 10Base-T 100Base-TX 100Base-FX ANSI BootP CAT5 CSMA/CD ICMP IEEE RMON SNMP TCP/IP TFTP 9033060 Definition 10 Mbps twisted-pair Ethernet 100 Mbps twisted-pair Fast Ethernet 100 Mbps fiber option Fast Ethernet American National Standards Institute Bootstrap Protocol Category 5 Cyclic Redundancy Check...

  • Page 117: Index

    802.3u, 91 Activity LED, defined, 6 Agent Configuration Web interface, 66 Agent Module description, 21 architecture dual-speed hub, 2 internal switch, 3 Auto-negotiation, 9 Backup Port Control Menu, 43 bandwidth utilization, 82 BootP, 10 BootP/DHCP configuring, 59 cable, RS-232, 19...
  • Page 118 RMON, 89 MIB Browser Web interface, 72 MIB-II, 88 modem connection, configuring, 20 Module Port Configuration Menu, 42 mounting ears, 15 mounting the switch rack, 15 network configuration status, 54 management, 3 non-volatile parameter storage, 8 optional modules, 2, 5...
  • Page 119 Trap Destinations, 37 SNMP-based network manager, 8 Spanning Tree, 58 stack cable, 16 Stack Connectors, defined, 7 Standards Compliance, IEEE, 91 switch LED, 4 defined, 4 Switch Module Statistics Web interface, 71 Switch/Media Module how to use, 18 System Configuration Menu, 33...
  • Page 121 9033060...

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