SEHI Book Page 1 Friday, April 19, 1996 10:46 AM SEHI-22FL INTELLIGENT STACKABLE HUB USER’S GUIDE
SEHI Book Page i Friday, April 19, 1996 10:46 AM NOTICE 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. The hardware, firmware, or software described in this manual is subject to change without notice.
SEHI Book Page ii Friday, April 19, 1996 10:46 AM 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.
SEHI Book Page iii Friday, April 19, 1996 10:46 AM Notice CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package. The Program may be contained in firmware, chips or other media.
SEHI Book Page iv Friday, April 19, 1996 10:46 AM Notice UNITED STATES GOVERNMENT RESTRICTED RIGHTS The enclosed product (a) was developed solely at private expense; (b) contains “restricted computer software” submitted with restricted rights in accordance with Section 52227-19 (a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its suppliers.
SEHI Book Page v Friday, April 19, 1996 10:46 AM CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This Manual....................................................................... 1-1 1.2 Document Conventions ............................................................... 1-2 1.3 Getting Help................................................................................. 1-3 1.4 Related Manuals.......................................................................... 1-3 CHAPTER 2 SEHI FEATURES AND OPTIONS 2.
SEHI Book Page vi Friday, April 19, 1996 10:46 AM Contents CHAPTER 4 INSTALLATION 4.1 Unpacking the SEHI.....................................................................4-1 4.2 Pre-installation Test .....................................................................4-2 4.3 Installing the SEHI .......................................................................4-2 4.3.1 Tabletop or Shelf Installation...........................................4-3 4.3.2 Rackmount Installation ........................
SEHI Book Page vii Friday, April 19, 1996 10:46 AM Contents APPENDIX A EPIM INFORMATION A.1 EPIM Specifications.....................................................................A-1 A.1.1 EPIM-T ............................................................................A-1 A.1.2 EPIM-F1 and EPIM-F2 ....................................................A-2 A.1.3 EPIM-F3 ..........................................................................A-3 A.1.4 EPIM-C................................................
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEHI-22FL Intelligent Stackable Hub User’s Guide. This manual provides installation instructions and reference information for the SEHI-22FL. NOTE 1.1 The term SEHI (Stackable Ethernet Hub with Intelligence) is used throughout this manual when describing the features and functions of the SEHI-22FL.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 1: Introduction Chapter 7, Local Management, describes how to use SEHI Local Management screens and the available commands. Appendix A, EPIM Information, provides specifications, cabling information, and switch settings for the Ethernet Port Interface Modules. Appendix B, Image File Download Using OIDs, provides instructions for setting up a TFTP server and downloading image files to the SEHI by setting specific MIB OID strings. 1.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Getting Help 1.3 GETTING HELP If you need additional support related to this device, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone By CompuServe By Internet mail By FTP Login Password (603) 332-9400 Monday – Friday; 8 A.M. – 8 P.M. Eastern Time GO CTRON from any ! prompt support@ctron.com ctron.com (134.141.197.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 2 SEHI FEATURES AND OPTIONS This chapter provides an overview of the SEHI-22FL and contains sections detailing features and available options. The term SEHI (Stackable Ethernet Hub with Intelligence) is used throughout this manual when describing features and functions of the SEHI-22FL.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 2: SEHI Features and Options 2.1 SEHI OVERVIEW The SEHI-22FL is an intelligent repeating hub providing front panel ports for network connections and a rear panel HubSTACK Interconnect Bus port for stackable connections. The SEHI is designed to manage the Cabletron Systems SEH series of non-intelligent stackable hubs. The SEHI-22FL provides twelve 10BASE-FL ST-type fiber optic ports and one EPIM (Ethernet Port Interface Module) port. 2.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Stackable Capabilities RESET Button Resetting the hub with the front panel RESET button reboots the SEHI and initializes the processor. Local Management Manage the SEHI and attached segments through Local Management on the SEHI. Local Management provides full packet and error statistics for the entire stack, individual device, or individual port.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 2: SEHI Features and Options 2.5 OPTIONAL FEATURES The following features are not included with the SEHI, but are purchased separately from Cabletron Systems. Ethernet Port Interface Modules (EPIMs) EPIMs enable the expansion of the network through a variety of media. Cabletron Systems offers the EPIMs shown in Table 2-1.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 3 INSTALLATION REQUIREMENTS AND SPECIFICATIONS This chapter describes cabling requirements, network guidelines, and operating specifications for the SEHI. ! CAUT ION The network must meet the requirements and conditions specified in this chapter to obtain satisfactory performance from this equipment. Failure to follow these guidelines can result in poor network performance.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 3: Installation Requirements and Specifications 3.1.1 HubSTACK Interconnect Cable Requirements Attach the SEHI to modules in the stack with the SEHI HubSTACK Interconnect cable available only from Cabletron Systems. Refer to Chapter 1 for cable part numbers. The cable attaches to the SEHI rear panel bus port. The rear panel of the SEHI has an Interconnect Bus Out port (male connector) to stack SEH non-intelligent hubs together.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Cable Specifications 3.1.3 10BASE-T UTP and STP Cable Specifications The devices and 10BASE-T Twisted Pair Segments connected to an SEHI EPIM-T module must meet the IEEE 802.3 10BASE-T specifications shown below: Length The IEEE 802.3 10BASE-T standard requires that 10BASE-T devices transmit over a 100 meter (328 foot) link using 22-24 AWG Unshielded Twisted Pair (UTP) wire. However, cable quality largely determines the maximum link length.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 3: Installation Requirements and Specifications Crosstalk Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle. 10BASE-T transceivers are designed so that the user does not need to be concerned about cable crosstalk, provided the cable meets all other requirements. Noise Noise is caused by either crosstalk or externally induced impulses.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM COM Port Requirements 3.3 COM PORT REQUIREMENTS The RJ45 COM port supports access to a Local Management Console. The Console port supports a Digital Equipment Corporation, VT320 terminal or PC emulation of the VT320 terminal. Figure 3-2 shows the pinouts for the RJ45 COM port. 12345678 COM 165201 1. Transmit Data 2. Data Carrier Detect 3. Data Set Ready 4. Receive Data Figure 3-2 3.4 5. Signal Ground 6. Data Terminal Ready 7. Request To Send 8.
SEHI Book Page 6 Friday, April 19, 1996 10:46 AM Chapter 3: Installation Requirements and Specifications 3.5 OPERATING SPECIFICATIONS The operating specifications for the SEHI are described in this section. Cabletron Systems reserves the right to change these specifications at any time without notice. System Specifications Operating System Memory: 1.
SEHI Book Page 7 Friday, April 19, 1996 10:46 AM Power Supply Requirements JAM Output Specifications Collisions are propagated through the network using the JAM signal of an alternating pattern of 1’s and 0’s in accordance with 802.3 specifications for a repeater unit. Fragment Extension Specifications Fragments are extended to a minimum of 96 bits using the JAM [1,0].
SEHI Book Page 8 Friday, April 19, 1996 10:46 AM Chapter 3: Installation Requirements and Specifications 3.7 ENVIRONMENTAL REQUIREMENTS The environmental requirements for the SEHI are detailed in this section. Operating Temperature: 5°C to 40°C (41°F to 104°F) Storage Temperature: -30°C to 90°C (-22°F to 194°F) Operating Humidity: 5% to 95% (non-condensing) 3.8 AGENCY APPROVALS The Safety, Immunity, and Emission approvals for the SEHI are detailed in this section. 3.8.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 4 INSTALLATION This chapter outlines the procedure for attaching the SEHI to the network as a stackable or standalone device. Ensure that the network meets the guidelines and requirements outlined in Chapter 3, Installation Requirements and Specifications, before installing the SEHI. Failure to follow installation instructions may result in an electrical shock hazard. 4.1 UNPACKING THE SEHI Unpack the SEHI as follows: 1.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 4: Installation 4.2 PRE-INSTALLATION TEST The SEHI is equipped with an NVRAM reset switch (Figure 4-1) located behind the grillwork on the side of the hub. Ensure that this switch is in the DOWN position by looking in through the grillwork on the right side of the hub. If the switch is UP, move it into the DOWN position with a non-metallic tool. Do not remove the chassis cover to perform this operation.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Installing the SEHI 4.3.1 Tabletop or Shelf Installation This section provides guidelines for installation on a tabletop or shelf. Tabletop and shelf installations must be within reach of the network cabling and meet the requirements listed below: • • • A single phase grounded power receptacle that meets the power supply requirements listed in Chapter 3 under Power Supply Requirements must be located within seven feet of the location.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 4: Installation 4.3.2 Rackmount Installation To install the SEHI in a 19-inch rack, Cabletron Systems offers an accessory kit that includes rackmount brackets, mounting screws, and a strain-relief bracket for cable management. The accessory kit is not included with the SEHI, but can be purchased separately from Cabletron Systems using the part number SEHI-ACCY-KIT.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM Installing the SEHI Rack Mounting the SEHI Refer to Figure 4-4 and proceed as follows to install the SEHI into a 19-inch rack. 1. Remove four cover screws (two from each side) located along the front edges of each side of the SEHI. Do not remove the cover from the SEHI. Do not remove any other screws from the unit. 2.
SEHI Book Page 6 Friday, April 19, 1996 10:46 AM Chapter 4: Installation ! CAUT ION The cooling fans at the rear panel of the SEHI must have adequate clearance (two inches on either side and in the rear) for unrestricted air flow. The temperature for the selected location must be maintained between 5°C and 40°C, and fluctuate less than 10°C per hour.
SEHI Book Page 7 Friday, April 19, 1996 10:46 AM Installing the SEHI To stack the SEHI together with an SEH non-intelligent hub, proceed as follows: 1. Attach the SEHI HubSTACK Interconnect cable to the “OUT” port on the rear panel of the SEHI as shown in Figure 4-6. 2. Attach the other end of the SEHI HubSTACK Interconnect cable to the “IN” port on the rear panel of the SEH. To stack SEH non-intelligent hubs together, proceed as follows: 1.
SEHI Book Page 8 Friday, April 19, 1996 10:46 AM Chapter 4: Installation If one end of a HubSTACK Interconnect cable is disconnected without disconnecting the other end attached to the hub, disconnect the cable from the OUT port as shown in Figure 4-7 to ensure that the HubSTACK Interconnect cable is terminated properly.
SEHI Book Page 9 Friday, April 19, 1996 10:46 AM Adding/Replacing EPIMs 4.5 ADDING/REPLACING EPIMS This section contains procedures on how to add or replace an Ethernet Port Interface Module (EPIM) to upgrade or change the capabilities of your SEHI. After installing a new EPIM, refer to the appropriate EPIM section in Appendix A to verify proper operation. Observe all static precautions while handling EPIMs.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 5 CONNECTING TO THE NETWORK This chapter outlines the procedure for connecting the SEHI to a network. Ensure that the network meets the guidelines and requirements outlined in Chapter 3, Installation Requirements and Specifications, before installing the SEHI. 5.1 CONNECTING THE SEHI TO THE NETWORK The procedure for connecting network segments to the SEHI varies depending on the media and ports being connected.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 5: Connecting to the Network • Label the fiber optic cable to indicate which fiber is receive and which is transmit. Cabletron Systems fiber optic cable is labeled so that one fiber is labeled 1, and the other fiber is labeled 2 at both ends of the cable. If the cable was not purchased from Cabletron Systems, label the cable as described above.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Connecting the SEHI to the Network 3. Attach the fiber labeled 2 to the applicable TX port, on the SEHI. 4. At the other end of the fiber optic cable, attach the fiber labeled 1 to the transmit port of the device. 5. Attach the fiber labeled 2 to the receive port. 6. Check that the LNK LED for the appropriate port is on. If the LED is off, perform the following steps until it is on: a.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 5: Connecting to the Network 5.1.2 Connecting a UTP Segment to an EPIM-T Before connecting a segment to the EPIM-T, check each end of the segment to determine if the wires cross over for proper connection. If the wires do not cross over, use the switch on the EPIM-T to internally cross over the RJ45 port. Figure 5-2 shows the pin assignment of the port according to the switch position. Position X (crossed over) 1. RX+ 2. RX3. TX+ 4. NC 5. NC 6.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM Connecting the SEHI to the Network If a link is not established, contact Cabletron Systems Technical Support. 5.1.3 Connecting a Fiber Segment to an EPIM-F1/F2/F3 When connecting a fiber optic link segment to an EPIM-F1, F2, or F3 keep the following in mind: • When connecting a fiber optic link segment with SMA 906 connectors to an EPIM-F1 with SMA ports, ensure that the half alignment sleeves (shown in Figure 5-3) are in place on each connector.
SEHI Book Page 6 Friday, April 19, 1996 10:46 AM Chapter 5: Connecting to the Network Connect a fiber optic link segment to an EPIM-F1, EPIM-F2, or an EPIM-F3 as follows: 1. Remove the protective plastic covers from the fiber optic ports on the applicable port on the module and from the ends of the connectors on each fiber strand. 2. Attach the fiber labeled 1 to the applicable RX port on the module. See Figure 5-3. 3. Attach the fiber labeled 2 to the applicable TX port on the module. 4.
SEHI Book Page 7 Friday, April 19, 1996 10:46 AM Connecting the SEHI to the Network F1/F2 ST Connectors F1/F2 SMA 906 Connectors w/ Half Alignment Sleeves SMA 905 Connectors F3 ST Connectors 1490_15 Figure 5-3 SEHI User’s Guide The EPIM-F1, EPIM-F2, and EPIM-F3 5-7
SEHI Book Page 8 Friday, April 19, 1996 10:46 AM Chapter 5: Connecting to the Network 5.1.4 Connecting a Thin Coaxial Segment to an EPIM-C To connect a thin coaxial segment to an EPIM-C: 1.
SEHI Book Page 9 Friday, April 19, 1996 10:46 AM Connecting the SEHI to the Network When internal termination switch is set to Off ( ) follow these procedures: Connect BNC T-connector to port. Attach a terminator or terminated thin coaxial segment to one female connector of T-connector. Connect a terminated thin coaxial segment to other female connector of T-connector. Attach thin coaxial segment directly to BNC connector when internal termination switch is set to On ( ). 1490_16 Figure 5-4 5.1.
SEHI Book Page 10 Friday, April 19, 1996 10:46 AM Chapter 5: Connecting to the Network TX TX RX TX RX X R TX 10 RX TX 4 9 8 7 PWR 1651_01 RX TX RX TX RX TX 3 2 EPIM-A EPIM-1 1 165213 Figure 5-5 The EPIM-A 5. Check that the PWR LED on the EPIM-A is on. If the LED is not on, contact Cabletron Systems Technical Support. 6. If the PWR LED is on with the AUI cable disconnected, continue with the following checks: a. Check the AUI connections for proper pinouts.
SEHI Book Page 11 Friday, April 19, 1996 10:46 AM Connecting the SEHI to the Network 5.1.6 ! CAUT ION Connecting an AUI Cable to an EPIM-X The Signal Quality Error (SQE) switch remains in the OFF position for most network connections. However, some Data Terminal Equipment (DTE) requires SQE. Refer to a DTE manual for SQE requirement information. Perform the following steps to connect an EPIM-X to a device not requiring SQE: 1. Check that the SQE LED on the EPIM-X is off.
SEHI Book Page 12 Friday, April 19, 1996 10:46 AM Chapter 5: Connecting to the Network 5.2 FINISHING THE INSTALLATION The SEHI is now ready for operation. Before placing the network into service, test the installation thoroughly, making sure that all stations can be addressed and that the SEHI and all stations are indicating normal operation. Ensure that the networking software is configured properly to match the installed network.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 6 TROUBLESHOOTING This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network problems. It also describes how to reset the SEHI and how to reset the NVRAM switch. 6.1 INSTALLATION CHECKOUT After connecting the SEHI to the network, verify that the packets pass between all Ethernet devices connected to the SEHI and any other devices connected to the network.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 6: Troubleshooting 2. If the remote station is ready and the LNK LED is on, but no data passes through the port, one of the following two conditions may exist: • Network management disabled the port. • The port is segmented either because the collision detector was on for more than 110 µs or the SEHI detected more than 32 consecutive collisions on the attached segment.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Using LANVIEW HubSTACK SEHI-22FL 10BASE-T HUB WITH LANVIEW® SECURE PWR CPU CLN RESET COM RCV LNK 12 11 10 9 8 7 6 5 4 3 2 1 E 1 LED NAME LED COLOR DEFINITION PWR (Power) Off Green (Solid) No power Power CPU (Central Processing Unit) Off Green (Flashing) Green (Blinking) Red (Solid) CPU in BOOT process CPU initializing CPU functioning CPU not functioning CLN (Collision) Red Collision RCV (Receive) Yellow (Flashing) Off SEHI is receivin
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 6: Troubleshooting CLN This red LED indicates that a collision has occurred on one of the ports. RCV When a yellow RCV LED flashes, it indicates that the SEHI is receiving data packets from the associated port segment. Each SEHI port has a corresponding RCV LED. The network RCV port LEDs are labeled 1-12 and the EPIM-1 RCV port LED is labeled E-1.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM Setting the NVRAM Switch 6.4 SETTING THE NVRAM SWITCH To prevent the possibility of electrical shock, do not remove the chassis cover to access the NVRAM switch, and use only a non-metallic tool when moving the NVRAM switch. The SEHI uses NVRAM (Non-Volatile Random Access Memory) to store user-entered parameters such as IP address and Community Names.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM CHAPTER 7 LOCAL MANAGEMENT This chapter explains how to set up a management terminal to access the SEHI Local Management. It also explains how to use the Local Management screens and commands. Use Local Management to accomplish the following tasks: • Assign an IP address and subnet mask. • Select a default gateway. • Control access to the SEHI through the community names established in the Community Name Table.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management 7.1 LOCAL MANAGEMENT KEYBOARD CONVENTIONS All key names appear in this manual as capital letters. For example, the enter (return) key appears as ENTER and the space bar appears as SPACE bar. Table 7-1 explains the keyboard conventions used in this manual as well as the key functions.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Management Terminal Setup 7.2 MANAGEMENT TERMINAL SETUP Use one of the following systems to access Local Management: • A Digital Equipment Corporation VT series terminal • A VT type terminal running emulation programs for the Digital Equipment Corporation VT series • An IBM or compatible PC running a VT series emulation software package Use a console cable to attach the management terminal to the SEHI.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management Console Cable Configuration Use the RJ45 Cable Kit provided with the SEHI-ACCY-KIT package to attach the management terminal to the SEHI COM port as shown in Figure 7-1. Connect the console cable to the SEHI as follows: 1. Attach the male RJ45 connector to the COM port of the SEHI. 2. Attach the female end (25-pin or 9-pin, as applicable) to the COM port on the terminal.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM Management Terminal Setup Management Terminal Setup Parameters Table 7-2 lists the setup parameters for the local management terminal. If the terminal is a Digital Equipment Corporation VT320 terminal, press F3 to access the Setup Directory. If the Local Management terminal uses terminal emulation of the VT320, refer to the equipment user manual for setup procedures.
SEHI Book Page 6 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management 7.3 ACCESSING LOCAL MANAGEMENT After configuring the local management terminal and properly attaching the cables to the SEHI, access the Local Management interface. 1. Power up the terminal. The password screen (Figure 7-2) appears. SEHI LOCAL MANAGEMENT Cabletron SEHI Revision X.XX.XX Cabletron Systems Incorporated 35 Industrial Way, P.O. Box 5005 Rochester, NH 03867-0505 U.S.A.
SEHI Book Page 7 Friday, April 19, 1996 10:46 AM The Feature Selection Screen NOTE If the terminal keyboard is not used for 15 minutes, the Local Management session ends and the screen defaults to the Password screen. SEHI LOCAL MANAGEMENT Cabletron Systems Incorporated P.O. Box 5005 Rochester, NH 03867-0505 U.S.A.
SEHI Book Page 8 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management 7.5 THE COMMUNITY NAME TABLE SCREEN To access the Community Name Table screen from the Feature Selection screen, use the arrow keys to highlight the Community Name Table option, then press ENTER or F6. The Community Name Table screen shown in Figure 7-4 appears. SEHI LOCAL MANAGEMENT Cabletron SEHI Revision X.XX.
SEHI Book Page 9 Friday, April 19, 1996 10:46 AM The Community Name Table Screen ACCESS Indicates the access status accorded each community name. Possible conditions are as follows: BASIC-READ This allows Read-Only access to Local Management, but excludes read privileges to the Component Trap screen. READ-ONLY This allows Read-Only access to Local Management, but excludes access to security protected fields of the upper levels of authorization (Read-Write or Super-User).
SEHI Book Page 10 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management NOTE The first time a user attempts to exit the screen without saving the changes, a “NOT SAVED?” message is displayed. The edits are lost if the user exits without saving the changes. 6. To exit the screen, press the appropriate Function key or use the arrow keys to highlight the RETURN command. 7. Press ENTER. The Feature Selection screen appears. 7.
SEHI Book Page 11 Friday, April 19, 1996 10:46 AM The Configuration Screen The following sections explain each field on the Configuration screen. I/F The number of the interface corresponding to the channels over which packets with that IP Address pass. On the SEHI, this value is “1.” IP Address Displays the IP address of the SEHI. SubNET Mask Displays the subnet mask for the SEHI. A subnet mask is a 32-bit quantity which “masks out” the network bits of the IP address.
SEHI Book Page 12 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management Setting the IP Address Use the following steps to set the IP Address: 1. Use the arrow keys to highlight the IP Address field. 2. Enter the IP address into this field. The format for this entry is XXX.XXX.XXX.XXX, with values for XXX being from 0 to 255. The screen beeps if non-numerics or adjacent dots are entered. If the entry does not have three dots, it is rejected. 3. Press ENTER.
SEHI Book Page 13 Friday, April 19, 1996 10:46 AM The Configuration Screen 2. Enter the subnet mask into this field. The format for this entry is XXX.XXX.XXX.XXX with values for XXX being from 0 to 255. 3. Press ENTER. 4. Use the arrow keys to highlight the SAVE option, then press ENTER or F6. The “SAVED OK” message appears indicating that the changes have been saved to memory. NOTE The first time an attempt is made to exit the screen without saving the changes, a “NOT SAVED?” message is displayed.
SEHI Book Page 14 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management Exiting the Configuration Screen Use the following steps to exit the Configuration screen and return to the Feature Selection screen: 1. Press the appropriate Function key. To return to the Feature Selection screen, use the arrow keys to highlight the RETURN command. 2. Press ENTER. The Feature Selection screen appears. 7.
SEHI Book Page 15 Friday, April 19, 1996 10:46 AM The Trap Table Screen Traps Enables transmission of the traps to the network management station with the associated IP address. IP Address Indicates the IP address of the workstation receiving trap alarms from the SEHI. Configuring the Trap Table Use the following steps to configure the Trap table: 1. Use the arrow keys to highlight the SNMP Community Name field, then enter the community name. 2. Press ENTER. 3.
SEHI Book Page 16 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management 7.8 THE SNMP TOOLS SCREEN This section describes how to use the SNMP Tools screen to access Management Information Bases (MIBs). Access to screen options depends on the access status accorded to the user’s community name. This section describes Super-User management capabilities. SNMP Tools allows access to valuable MIB information.
SEHI Book Page 17 Friday, April 19, 1996 10:46 AM The SNMP Tools Screen OID PREPEND Specifies the number prefix common to all Object Identifiers (OIDs) found in the MIBs – 1.3.6.1 is the default prefix OID. This is a modifiable field. GET Allows the user to retrieve MIB objects using SNMP protocol. SET Allows users with Read-Write and Super-User access to change modifiable MIB objects, using SNMP protocol. GETNEXT Displays the OID following the current OID.
SEHI Book Page 18 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management Getting Individual OIDs Use the following steps to “Get” individual OIDs: 1. Highlight GET, using the arrow keys, then press ENTER or F6. “ OID (=|F9)” appears. 2. Use one of the following options to enter the OID: • Using the keyboard to enter the OID minus the prepend (e.g., if the prepend is 1.3.6.1, and 4.1.3 is entered, then the OID=1.3.6.1.4.1.3). • Entering an “=” and the OID suffix (e.g., if =4.1.
SEHI Book Page 19 Friday, April 19, 1996 10:46 AM The SNMP Tools Screen 3. Press ENTER. If there is no instance of that OID, the return code will specify “MIB_NO_INSTANCE”, otherwise “DATA TYPE:” appears. 4. Enter the data type for that OID. Possible choices are integer, string, null, OID, IP address, counter, gauge, timeticks, and opaque. 5. Press ENTER. “DATA” appears. 6. Enter the value to correspond to the OID. If accepted, “ OPERATION CODE: XXXX ” appears, otherwise an error message appears.
SEHI Book Page 20 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management Cycling Through OIDs Use the following steps to “Cycle” through OIDs: 1. Use the arrow keys to Highlight CYCLES, then press ENTER. 2. Enter the number of cycles desired to occur after “ENTER CYCLE COUNT:”, then press ENTER. 3. Enter how many seconds delay desired between get next requests after “ENTER CYCLE DELAY (secs):”, then press ENTER. Exiting the SNMP Tools Screen Use the following steps to exit the SNMP Tools screen: 1.
SEHI Book Page 21 Friday, April 19, 1996 10:46 AM The Device Statistics Screen The following sections describe Device Statistics screen fields: BYTES RECEIVED Displays the number of bytes received. FRAMES RECEIVED Displays the number of frames received. ERRORS RECEIVED Displays the number of errors received. COLLISIONS Displays the number of collisions received. OOW COLLISIONS Displays the number of Out Of Window collisions.
SEHI Book Page 22 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management PORT ADMIN. STATUS Displays the administrative status of the port selected. The two possible status messages are Enable or Disable. PORT SEG. STATUS Displays the segmentation status of the port selected. The two possible status messages are Segmented or Unsegmented. The SEHI and SEH automatically partition problem segments, and reconnect non-problem segments to the network.
SEHI Book Page 23 Friday, April 19, 1996 10:46 AM The Device Statistics Screen PORT This command lets the user view port statistics for ports 1-26 of the selected module. Selecting the Appropriate Module/Port When the Device Statistics screen first appears, statistics are displayed for Module 1 and Port 1. To view statistics for another module and port, use the Module x or Port x commands at the bottom of the screen. To select a module or port: 1.
SEHI Book Page 24 Friday, April 19, 1996 10:46 AM Chapter 7: Local Management Using the DISABLE PORT Command The DISABLE PORT command lets the user disable the port selected in the PORT command. The user must first use the Port command to select the desired port. To set the DISABLE PORT command: 1. Use the arrow keys to highlight the DISABLE PORT command at the bottom of the screen. 2. Press ENTER. The corresponding port is enabled and the Port Admin Status field is updated.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM APPENDIX A EPIM INFORMATION A.1 EPIM SPECIFICATIONS EPIMs enable the connection of the SEHI to the main network using different media types. Cabletron Systems offers a variety of EPIMs. The following sections explain specifications for each EPIM. A.1.1 EPIM-T The EPIM-T is an RJ45 connector supporting UTP cabling. It has an internal Cabletron Systems TPT-T 10BASE-T Twisted Pair Transceiver.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Appendix A: EPIM Information A.1.2 EPIM-F1 and EPIM-F2 The EPIM-F1 and EPIM-F2 shown in Figure A-2 support Multimode Fiber Optic cabling. Each EPIM has an internal Cabletron Systems FOT-F Fiber Optic Transceiver. The EPIM-F1 is equipped with SMA Connectors and the EPIM-F2 is equipped with ST Connectors. Specifications for the EPIMs are listed below.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM EPIM Specifications A.1.3 EPIM-F3 The EPIM-F3 (Figure A-3) supports Single Mode Fiber Optic cabling. It has an internal Cabletron Systems FOT-F Fiber Optic Transceiver and is equipped with ST Connectors. EPIM-F3 specifications are listed below. 1490_32 Figure A-3 EPIM-F3 Transmitter Power decreases as temperatures rise and increases as temperatures fall.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Appendix A: EPIM Information A.1.4 EPIM-C The EPIM-C supports thin coaxial cabling and is equipped with an internal Cabletron Systems TMS-3 Transceiver. Use the TERM switch on the front of the EPIM-C to set the internal 50-ohm terminator. This eliminates the need to connect the port to a T-connector and terminator. Figure A-4 shows the setting for the terminator switch.
SEHI Book Page 5 Friday, April 19, 1996 10:46 AM EPIM Specifications A.1.5 EPIM-A and EPIM-X (AUI Port) The EPIM-A is a DB15 female connector used to attach segments to an external transceiver. The EPIM-X is equipped with dual internal transceivers. It has a DB15 male connector used to attach segments to an AUI cable. Figure A-5 shows both modules. 1490_35 Figure A-5 Pin The EPIM-A and EPIM-X 1 Logic Ref. 2 Collision + 3 Transmit 4 Logic Ref. 5 Receive + 6 Power Return 7 No Connection 8 Logic Ref.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM APPENDIX B IMAGE FILE DOWNLOAD USING OIDs This appendix provides instructions for setting up a TFTP server and to download an image file to the SEHI by setting specific MIB OID strings. Set the OID strings with the SNMP Tools screen described in Chapter 7, Section 7.8. NOTE Download an image file to the SEHI with a remote management package such as SPECTRUM, SPECTRUM Element Manager, or the appropriate SPECTRUM Portable Management Application.
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Appendix B: Image File Download Using OIDs B.1 SETTING UP A UNIX WORKSTATION AS A TFTP SERVER Due to variations between UNIX systems and individual configurations, this section provides only GUIDELINES for configuring a UNIX workstation to perform an image file download. The instructions include command examples, where appropriate. Bold lettering in examples indicates operator entry.
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM Standard TFTP Download NOTE The next step requires decompression of the zipped image file. If you do not have a UNIX unzip utility, access to a PC with PKUNZIP, or a way to FTP the decompressed image to your UNIX workstation, contact Cabletron Systems Technical Support. 6. Store the hex image file in the /tftpboot directory as sehi.hex. 7. Edit the /etc/inetd.conf file by removing anything prior to the tftpboot daemon (e.g.
SEHI Book Page 4 Friday, April 19, 1996 10:46 AM Appendix B: Image File Download Using OIDs • Enter the FULL path to the image file in the ctDLTFTPRequest OID, including the name of the image file (e.g., c:/tftpboot/sehi.hex). Table B-1 Standard TFTP Download Procedure Data Type SNMP OID Data Step OID Name OID Number 1. ctDLForceOnBoot 1.3.6.1.4.1.52.4.1.5.8.1.1.0 integer 1 2. ctDLCommitRAMToFlash 1.3.6.1.4.1.52.4.1.5.8.1.2.0 integer 1 3. ctDLTFTPRequestHost Enter the IP IP address 1.3.6.1.
SEHI Book Page 1 Friday, April 19, 1996 10:46 AM INDEX Numerics 10BASE-FL attenuation 3-2 budget and propagation delay 3-2 cable requirements 3-2 10BASE-T cable length 3-3 crosstalk 3-4 delay 3-3 impedance 3-3 insertion loss 3-3 jitter 3-3 noise 3-4 temperature 3-4 UTP and STP specifications 3-3 A AUI cable EPIM specifications 2-4 EPIM-A and EPIM-X A-5 EPIM-C A-4 EPIM-F1/F2 A-2 EPIM-F3 A-3 EPIM-T A-1 F FLASH EEPROMs 2-2 FLASH Firmware Image 4-1 H Help related manuals 1-3 HubSTACK cable requirements 3-2
SEHI Book Page 2 Friday, April 19, 1996 10:46 AM Index N T Network connection 5-1 AUI 5-9, 5-11 EPIM-A 5-9 EPIM-C 5-8 EPIM-F1/F2/F3 5-5 EPIM-T 5-4 EPIM-X 5-11 fiber optic segment 5-5 thin coaxial 5-8 Unshielded Twisted Pair 5-4 Network port specifications SEHI-22FL 3-4 NVRAM pre-installation checkout 4-2 setting 6-5 Transceiver requirements Trap Table screen 7-14 Troubleshooting 6-1 3-5 O OIDs 7-16 Operating specifications 3-6 P Port ENABLE override 7-13 Power supply requirements 3-7 R Rack mounti
SEHI Book Page 3 Friday, April 19, 1996 10:46 AM POWER SUPPLY CORD The mains cord used with this equipment must be a 2 conductor plus ground type with minimum 0.75 mm square conductors and must incorporate a standard IEC appliance coupler on one end and a mains plug on the other end which is suitable for the use and application of the product and that is approved for use in the country of application.
