SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM SEHI100TX-22 100BASE-T INTELLIGENT STACKABLE HUB USER’S GUIDE ®
SEHI Book Page i Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 AM Contents CHAPTER 5 CONNECTING TO THE NETWORK 5.1 Connecting the SEHI to the Network ...........................................5-1 5.1.1 Connecting to Network Ports...........................................5-1 5.1.2 Connecting a UTP Segment to an EPIM-100TX .............5-2 5.1.3 Connecting a Fiber Segment to the EPIM-100FX ...........5-4 5.2 Testing the Installation .................................................................
SEHI Book Page vii Wednesday, May 15, 1996 10:42 AM Contents 7.9 The Device Statistics Screen..................................................... 7-21 7.9.1 Selecting the Appropriate Module/Port ......................... 7-23 7.9.2 Using the ENABLE PORT Command ........................... 7-24 7.9.3 Using the DISABLE PORT Command .......................... 7-24 7.9.4 Exiting the Device Statistics Screen ............................. 7-24 APPENDIX A EPIM SPECIFICATIONS A.1 EPIM Specifications............
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEHI100TX-22 100BASE-T Intelligent Stackable Hub User’s Guide. This manual provides installation instructions, troubleshooting, and reference information for the SEHI100TX-22. NOTE 1.1 The term SEHI (Stackable Ethernet Hub with Intelligence) is used throughout this manual when describing the features and functions of the SEHI100TX-22.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Chapter 1: Introduction Appendix A, EPIM Specifications, 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 an image file to the SEHI by setting specific MIB OID strings. 1.2 DOCUMENT CONVENTIONS The following conventions are used throughout this document: NOTE Note symbol.
SEHI Book Page 3 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 AM CHAPTER 2 SEHI FEATURES AND OPTIONS This chapter provides an overview of the SEHI and contains sections detailing features and available options. NOTE The terms SEHI (Stackable Ethernet Hub with Intelligence) and SEH (Stackable Ethernet Hub) are used throughout this manual when describing the features and functions of the SEHI100TX-22 and the SEH100TX-22.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Chapter 2: SEHI Features and Options ! CAUT ION The SEHI100TX-22 operates in a 100BASE-T Ethernet network. This product will NOT operate in a 10BASE-T environment. Connect the SEHI100TX-22 and SEH100TX-22 only to similar 100BASE-T products. The SEHI100TX-22 supports the EPIM-100TX and the EPIM-100FX. No other Cabletron Systems EPIMs operate in this device. 2.2 SEHI FEATURES Repeater Functionality The SEHI fully conforms to the IEEE 802.
SEHI Book Page 3 Wednesday, May 15, 1996 10:42 AM Stackable Capabilities LANVIEW LEDs Cabletron Systems LANVIEW status monitoring and diagnostics system is a troubleshooting tool that helps in diagnosing power failures, collisions, cable faults, and link problems. The LANVIEW LEDs are conveniently located on the SEHI front panel. RESET Button Resetting the hub with the front panel RESET Button reboots the SEHI and initializes the processor.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Chapter 2: SEHI Features and Options 2.4 RACK MOUNTING CAPABILITIES The SEHI can be installed in a 19-inch rack. Cabletron Systems provides brackets and mounting screws with the SEHI. See Chapter 4, Installation, for complete rack mounting instructions. 2.5 REMOTE NETWORK MANAGEMENT Manage the SEHI remotely with any SNMP network management system.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM CHAPTER 3 INSTALLATION REQUIREMENTS AND SPECIFICATIONS This Chapter describes cabling requirements, network guidelines, and operating specifications for the SEHI100TX-22. ! CAUT ION 3.1 The network must meet the requirements and conditions specified in this chapter to obtain satisfactory performance from this equipment. Failure to follow these guidelines could result in poor network performance.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Chapter 3: Installation Requirements and Specifications 3.1.2 UTP Cable Specifications The device at the other end of the twisted pair segment must meet IEEE 802.3u 100BASE-T specifications. When connecting a 100BASE-TX Twisted Pair Segment to the SEHI twisted pair network ports and the EPIM-100TX module, the network must meet the following requirements: Length The IEEE 802.
SEHI Book Page 3 Wednesday, May 15, 1996 10:42 AM Cable Specifications Propagation Delay Propagation delay is the amount of time it takes data to travel from the sending device to the receiving device. Total propagation delay allowed for the network is 256 bit times (2.56 µs) in one direction (5.12 µs round trip). If the total propagation delay between any two nodes on the network exceeds 2.56 µs, then use bridges or other devices to further segment the network.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Chapter 3: Installation Requirements and Specifications 3.2 NETWORK CABLE LENGTHS This section details the maximum network cable lengths specified by the IEEE 802.3u standard for a Class I repeater. As stated previously, the physical size of the network is limited primarily by propagation delay. The round trip delay cannot exceed 512 bit times or 5.12 µs. NOTE A stack of five SEH hubs or four SEH hubs and one SEHI hub is equivalent to one repeater.
SEHI Book Page 5 Wednesday, May 15, 1996 10:42 AM Network Port Specifications SEHI100TX-22 Repeater A B DTE DTE Figure 3-1 3.3 Class I Network NETWORK PORT SPECIFICATIONS The SEHI network ports use shielded RJ45 connectors that support UTP cabling. Figure 3-2 shows the RJ45 pinouts. 12345678 9X 10X 11X 1. Receive + 2. Receive 3. Transmit + 4. Not Used 5. Not Used 6. Transmit 7. Not Used 8. Not Used 09162_02 Figure 3-2 3.
SEHI Book Page 6 Wednesday, May 15, 1996 10:42 AM Chapter 3: Installation Requirements and Specifications 12345678 COM 1. Transmit Data 2. Data Carrier Detect 3. Data Set Ready 4. Receive Data 5. Signal Ground 6. Data Terminal Ready 7. Request To Send 8. Clear To Send 1511_15 Figure 3-3 3.5 COM Port Pinouts OPERATING SPECIFICATIONS The operating specifications for the SEHI100TX-22 are described in this section.
SEHI Book Page 7 Wednesday, May 15, 1996 10:42 AM Agency Approvals 3.6 AGENCY APPROVALS The safety, emission, and immunity approvals for the SEHI are detailed in this section. Safety This unit meets the safety requirements of UL 1950, CSA C22.2 No. 950, IEC 950 and EN 60950. Emissions This unit meets the emission requirements of FCC Part 15 Class A, EN 55022 Class A and VCCI Class I.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 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. NOTE A single phase grounded power receptacle that meets the requirements listed in Chapter 3 must be located within seven feet of the installation.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Chapter 4: Installation 4.2 PRE-INSTALLATION CHECKOUT 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 Wednesday, May 15, 1996 10:42 AM Tabletop or Shelf Installation 4.3 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: • In a shelf installation, the shelf must be able to support 30 pounds of static weight for each device in the stack.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Chapter 4: Installation 4.4 RACKMOUNT INSTALLATION To install the SEHI in a 19-inch rack, Cabletron Systems provides a kit with the SEHI that includes rackmount brackets, mounting screws, and a strain-relief bracket for cable management.
SEHI Book Page 5 Wednesday, May 15, 1996 10:42 AM Rackmount Installation Rack Mounting the SEHI Refer to Figure 4-4 and proceed as follows to install the SEHI into a 19-inch rack. 1. Remove the 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 SEHI100TX-22. Do not remove any other screws from the unit. 2.
SEHI Book Page 6 Wednesday, May 15, 1996 10:42 AM Chapter 4: Installation 3. Ensure that the rack used will support the unit, and that the rack will remain stable with the unit installed in it. Support the SEHI securely from underneath, and align the mounting brackets of the SEHI chassis with the screw holes in the equipment rack as shown in Figure 4-5. Fasten the SEHI to the equipment rack securely.
SEHI Book Page 7 Wednesday, May 15, 1996 10:42 AM Powering Up and Stacking the SEHI 4.5 POWERING UP AND STACKING THE SEHI The following section details the procedures that must be followed to power up and interconnect stacked hubs. Failure to follow this procedure may result in damage to the equipment. ! If you are using an intelligent hub (SEHI) to manage the stack, you must locate the SEHI at the bottom of the stack.
SEHI Book Page 8 Wednesday, May 15, 1996 10:42 AM Chapter 4: Installation 4. Verify that the PWR LED is on, indicating that the SEH is receiving power. ! CAUT ION Do NOT connect the interconnect cable between the SEH and the SEHI before powering up the SEH. Otherwise damage to the SEH may result. 5. Attach the HubSTACK Interconnect cable provided with the SEH to the “IN” port on the rear panel of the SEH as shown in Figure 4-6. 6.
SEHI Book Page 9 Wednesday, May 15, 1996 10:42 AM Installing the EPIM-100TX or the EPIM-100FX 4.6 INSTALLING THE EPIM-100TX OR THE EPIM-100FX This section contains procedures on how to install the EPIM-100TX or the EPIM-100FX 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 an EPIM.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 AM Chapter 5: Connecting to the Network 16X 15X X 14X 13 12X LNK 0TX EPIM-10 5X 4X 3X 2X 1X EPIM 1 1511_10 Figure 5-1 SEHI Network Ports 2. Check that the applicable LNK LED for the port is on. If the LED is off, perform each of the following steps until it is on: a. Check that the 100BASE-TX device at the other end of the twisted pair segment is powered up. b. Verify that the RJ45 connector on the twisted pair segment has the proper pinouts.
SEHI Book Page 3 Wednesday, May 15, 1996 10:42 AM Connecting the SEHI to the Network Position X (crossed over) 1. RX+ 2. RX3. TX+ 4. NC 5. NC 6. TX7. NC 8. NC Position = (not crossed over) 1. TX+ 2. TX3. RX+ 4. NC Figure 5-2 5. NC 6. RX7. NC 8. NC 1511_11 EPIM-100TX Crossover Switch Connect an EPIM-100TX to a twisted pair segment as follows: 1. Connect the twisted pair segment to the module by inserting the RJ45 connector on the twisted pair segment into the RJ45 port on the module. See Figure 5-2.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Chapter 5: Connecting to the Network 5.1.3 Connecting a Fiber Segment to the EPIM-100FX The EPIM-100FX has an SC style network port (see Figure 5-3). Cabletron Systems supplies fiber optic cables using SC connectors that are keyed to insure proper crossover of the transmit and receive fibers.
SEHI Book Page 5 Wednesday, May 15, 1996 10:42 AM Testing the Installation 3. At the other end of the fiber optic cable, attach the SC connector to the other device. 4. Check that the EPIM-100FX LNK LED is on. If the LED is off, perform the following steps until it is on: a. Check that the power is turned on for the device at the other end of the link. b.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 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 TEST After connecting the SEHI to the network, verify that packets pass between all Ethernet devices connected to the SEHI and any other devices connected to the network.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 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 two conditions may exist: • Network management has disabled the port. Correct this condition by enabling the port through network management. • 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 Wednesday, May 15, 1996 10:42 AM Using LANVIEW HubSTACK 100BASE-TX HUB WITH LANVIEW® SEHI100TX-22 RCV LNK A 22 21 20 19 18 17 16 15 14 13 12 PWR CPU CLN RESET COM RCV LNK 22X E 11 10 9 8 7 6 5 4 3 2 1 11X 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 (Rece
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 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.
SEHI Book Page 5 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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. Local Management supplies the tools to manage the SEHI and all of its attached segments.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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 An RJ45 console cable is required to attach the management terminal to the SEHI.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management Console Cable Configuration Use the RJ45 Cable Kit provided with the SEHI 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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. Use the following steps to access Local Management: 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.
SEHI Book Page 7 Wednesday, May 15, 1996 10:42 AM The Feature Selection Screen NOTE 7.4 If the terminal keyboard is not used for 15 minutes, the Local Management session ends and the screen defaults to the Password screen. THE FEATURE SELECTION SCREEN The Feature Selection screen is the main menu screen for SEHI Local Management. There are five screen options in the Feature Selection screen: Community Name Table, IP Address Assignment, Component Trap Table, SNMP Tool Support, and Device Statistics.
SEHI Book Page 8 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 AM The Community Name Table Screen ACCESS Indicates the access status accorded each community name. The following conditions are possible: 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 Wednesday, May 15, 1996 10:42 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 proceeds to exit 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 Wednesday, May 15, 1996 10:42 AM 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 always 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 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management 7.6.1 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 will be rejected. 3. Press ENTER.
SEHI Book Page 13 Wednesday, May 15, 1996 10:42 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 7.6.
SEHI Book Page 14 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management 7.6.5 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 Wednesday, May 15, 1996 10:42 AM The Trap Table Screen Traps Enables transmission of the traps to the network management station with the associated IP address. Trap IP Address Indicates the IP address of the workstation to receive trap alarms from the SEHI. 7.7.1 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 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 Lets you 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 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management 7.8.1 Getting Individual OIDs Use the following steps to GET an OID: 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: • 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). • Enter an “=” and the OID suffix (e.g., if =4.1.3 is entered, then the OID=4.1.3).
SEHI Book Page 19 Wednesday, May 15, 1996 10:42 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. The following are possible choices: 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.
SEHI Book Page 20 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management 7.8.6 Stepping Through OIDs Use the following steps to STEP through OIDs (the user can step through only after a GETNEXT): 1. Highlight STEP, using the arrow keys, then press ENTER. “Specify OID” appears. 2. Enter the OID (only the suffix is necessary) and press ENTER. The Tools screen will begin to scroll one OID at a time, through all of the sublayers of the MIB available for that OID. 7.8.
SEHI Book Page 21 Wednesday, May 15, 1996 10:42 AM The Device Statistics Screen 7.9 THE DEVICE STATISTICS SCREEN This section describes the features of the Device Statistics screen. The user can view error, collision, and traffic statistics for the stack, a selected module, or a selected port. The user can also enable and disable ports. To access the Statistics screen from the Features Selection screen, use the arrow keys to highlight the Device Statistics option, then press ENTER.
SEHI Book Page 22 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management OOW COLLISIONS Displays the number of Out Of Window collisions. OOW collisions are usually caused by the network being too long where the round trip propagation delay is greater than 51.2 µs (the collision domain is too large), a station somewhere on the network is violating Carrier Sense and transmitting at will, or a cable somewhere on the network failed during the transmission of the packet.
SEHI Book Page 23 Wednesday, May 15, 1996 10:42 AM The Device Statistics Screen UPDATE-FREQ This command lets the user select the time interval between Stack/Module/Port counter updates. Choose update intervals in increments of 3 seconds, with the maximum interval being 99 seconds. MODULE This command lets the user view statistics for a selected module in the stack. The SEHI is Module 1 and each SEH in the stack follows in sequential order. Figure 7-9 shows each module number in the stack.
SEHI Book Page 24 Wednesday, May 15, 1996 10:42 AM Chapter 7: Local Management 7.9.2 Using the ENABLE PORT Command The ENABLE PORT command lets the user enable the selected port. The user must first use the PORT command to select the desired port. Use the following steps to set the PORT ENABLE command: 1. Use the arrow keys to highlight the ENABLE PORT command at the bottom of the screen. 2. Press ENTER. The corresponding port is enabled and the Port Admin Status field is updated. 7.9.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM APPENDIX A EPIM SPECIFICATIONS A.1 EPIM SPECIFICATIONS EPIMs enable the connection of the SEHI to the network using different media types.The SEHI100TX-22 supports the EPIM-100TX and the EPIM-100FX. This appendix provides specifications for each EPIM. A.1.1 EPIM-100TX The EPIM-100TX is an RJ45 connector supporting Unshielded Twisted Pair (UTP) cabling. The slide switch on the EPIM-100TX determines the cross-over status of the cable pairs.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Appendix A: EPIM Specifications A.1.2 EPIM-100FX The EPIM-100FX shown in Figure A-2 supports Multimode Fiber Optic cabling. The EPIM-100FX is equipped with an SC style connector. Specifications for the EPIM-100FX are listed below. 16X 15X 14X 13X 12X 2X 1X LNK FX EPIM-100 5X 4X 3X EPIM 1 1511_17 Figure A-2 Table A-1 EPIM-100FX Transmitter Power Cable Type Worst Case Budget Typical Budget 50/125 µm fiber 6.0 dB 9.0 dB 62.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 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. 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 Wednesday, May 15, 1996 10:42 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 Wednesday, May 15, 1996 10:42 AM Standard Local Download 3. Ensure that the /tftpboot directory is not owned (e.g., unix% chown nobody tftpboot). 4. Store the hex image file in the /tftpboot directory as sehi.hex. NOTE This 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 a UNIX workstation, contact Cabletron Systems Technical Support. 5. Edit the /etc/inetd.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM Appendix B: Image File Download Using OIDs • Enter the IP address of the TFTP server in standard dotted decimal notation (e.g., 132.177.118.24). • 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 OIDs and Settings Step OID Name OID Number Data Type SNMP OID Data 1. ctDLForceOnBoot 1.3.6.1.4.1.52.4.1.5.8.1.1.0 integer 1 2. ctDLCommitRAMToFlash 1.3.
SEHI Book Page 1 Wednesday, May 15, 1996 10:42 AM INDEX Numerics D 100BASE-TX cable length 3-2 crosstalk 3-2 impedance 3-2 jitter 3-2 noise 3-2 propagation delay 3-3 temperature 3-3 Default gateway 7-13 Device statistics alignment errors 7-22 bytes received 7-21 collisions 7-21 CRC errors 7-22 disable port 7-22 enable port 7-22 errors recieved 7-21 frames received 7-21 giant packets 7-22 module 7-23 oow collisions 7-22 port 7-23 port admin. status 7-22 port seg.
SEHI Book Page 2 Wednesday, May 15, 1996 10:42 AM Index F O FLASH EEPROMs 2-2 FLASH firmware image 4-1 OIDs 7-16 Operating specifications 3-6 H P Help 1-3 HubSTACK cable requirements 3-1 Port ENABLE override 7-13 Power supply requirements 3-6 R I IP address 7-12 Remote network management 2-4 Reset 6-4 L S LANVIEW 6-2 LEDs 6-3 Local Management 7-1 accessing 7-6 community name table 7-8 configuration screen 7-10 console cable 7-4 device statistics 7-21 DISABLE port 7-24 ENABLE port 7-24 port ena
SEHI Book Page 3 Wednesday, May 15, 1996 10:42 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.
SEHI Book Page 4 Wednesday, May 15, 1996 10:42 AM
