Cabletron Systemsメーカー2H23-50Rの使用説明書/サービス説明書
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9032286-04 2H23-50R/2H33-37R Smar tSwitch 2100 User’ s Guide CONN 1 CONN 3 CONN 2 6 5 CONN 1 CONN 3 CONN 4 CONN 2 2H23-50R COM PWR CPU RESET 10 100 CONN 4 CONN 3 CONN 2 CONN 1 CONN 4 CONN 3 CONN 2 C.
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2H23-50R/2H33-37R User’ s Guide i 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 ha ve been made.
Notice ii 2H23-50R/2H33-37R User’ s Guide INDUSTRY CANADA NOTICE This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications.
Notice 2H23-50R/2H33-37R User’ s Guide iii CABLETRON SOFTWARE PROGRAM LICENSE 1. LICENSE . You have the right to use only the one (1) copy of the Program provided in this package subject to the terms and conditions of this License Agreement.
Notice iv 2H23-50R/2H33-37R User’ s Guide SAFETY INFORMATION CLASS 1 LASER TRANSCEIVERS THE FE-100F3 FAST ETHERNET INTERFACE MODULE, FPIM-05 AND FPIM-07 FDDI PORT INTERFACE MODULES, AND APIM-29 ATM PORT INTERFACE MODULE USE CLASS 1 LASER TRANSCEIVERS.
Notice 2H23-50R/2H33-37R User’ s Guide v DECLARATION OF CONFORMITY Application of Council Directiv e(s): 89/336/EEC 73/23/EEC Manufacturer’ s Name: Cabletron Systems, Inc. Manufacturer’ s Address: 35 Industrial Way PO Box 5005 Rochester, NH 03867 European Representativ e Name: Mr.
Notice vi 2H23-50R/2H33-37R User’ s Guide.
2H23-50R/2H33-37R User’ s Guide vii CONTENTS CHAPTER 1 INTRODUCTION 1.1 Using This Guide ......................................................................... 1-1 1.2 Structure of This Guide.......................................................
Contents viii 2H23-50R/2H33-37R User’ s Guide 3.5 Connecting to the Network ........................................................... 3-8 3.5.1 Connecting Cables to CONN 1 Through 4 ...................... 3-9 3.5.2 Connecting a UTP Segment to the FE-100TX .
Contents 2H23-50R/2H33-37R User’ s Guide ix 5.9 SNMP Traps Screen.................................................................. 5-36 5.9.1 Configuring the Trap Table ........................................... 5-37 5.10 Switch Configuration Screen .
Contents x 2H23-50R/2H33-37R User’ s Guide 5.25 RMON Statistics Screen ............................................................ 5-87 5.25.1 Displaying RMON Statistics ..........................................5-91 5.25.2 Using the Clear Counters Command .
2H23-50R/2H33-37R User’ s Guide 1-1 CHAPTER 1 INTR ODUCTION W elcome to the 2H23-50R/2H33-37R SmartSwitch 2100 User’s Guide . This guide provides the necessary documentation to install and operate.
Chapter 1: Introduction 1-2 2H23-50R/2H33-37R User’ s Guide Appendix A , Specifications , contains information on functionality and operating specifications, connector pinouts, en vironmental requirements, and physical properties.
Overview 2H23-50R/2H33-37R User’ s Guide 1-3 The 2H23-50R is a high speed network repeater/switch de vice that provides four Ethernet netw orks and four Fast Ethernet netw orks (RJ21 MicroLANs, CONN 1 through CONN 4) and two slots (5 and 6) for optional Fast Ethernet Interf ace Modules.
Chapter 1: Introduction 1-4 2H23-50R/2H33-37R User’ s Guide 1.3.1 Connectivity The 2H23-50R or 2H33-37R connect to Ethernet/Fast Ethernet netw orks or workstations through RJ21 ports on the front panel. Each port supports a 25-pair cable at lengths up to 100 meters (each pair must be Category 5 compliant with an impedance of 85 to 111 ohms).
Overview 2H23-50R/2H33-37R User’ s Guide 1-5 When Auto-Negotiation is supported at both ends of a link, the tw o de vices dynamically adjust to full or half duplex operation based on the maximum capability that can be reached between the two de vices.
Chapter 1: Introduction 1-6 2H23-50R/2H33-37R User’ s Guide The RAD requests start out at an interv al of 1 second. The interv al then doubles after e very transmission until an interv al of 300 seconds is reached. At this point, the interv al remains at 300 seconds.
Optional Features 2H23-50R/2H33-37R User’ s Guide 1-7 1.3.8 Standards Compatibility The 2H23-50R provides IEEE 802.1D Spanning T ree Algorithm (ST A) support to enhance the ov erall reliability of the network and protect against “loop” conditions.
Chapter 1: Introduction 1-8 2H23-50R/2H33-37R User’ s Guide 1.4.1 Fast Ethernet Interface Modules Cabletron Systems provides F ast Ethernet Interface Modules to support uplinks to 100 Mbps Fast Ethernet backbones or high speed connections to local servers.
Document Con ventions 2H23-50R/2H33-37R User’ s Guide 1-9 1.5 DOCUMENT CON VENTIONS The follo wing con ventions are used throughout this document: NO TE Note symbol. Calls the reader’ s attention to any item of inf ormation that may be of special impor tance.
Chapter 1: Introduction 1-10 2H23-50R/2H33-37R User’ s Guide 1.6 GETTING HELP For additional support related to this de vice or document, contact the Cabletron Systems Global Call Center: Before cal.
Related Manuals 2H23-50R/2H33-37R User’ s Guide 1-11 1.7 RELATED MANUALS The follo wing manuals may help to set up, control, and manage the 2H23-50R and 2H33-37R: Cabletron Systems HSIM-A6DP User’.
Chapter 1: Introduction 1-12 2H23-50R/2H33-37R User’ s Guide.
2H23-50R/2H33-37R User’ s Guide 2-1 CHAPTER 2 NETW ORK REQUIREMENTS This chapter contains networking guidelines. Before installing and using the 2H23-50R or an optional Fast Ethernet Interf ace Module, re vie w the requirements and specifications outlined in this chapter concerning the follo wing: • SmartT runk ( Section 2.
Chapter 2: Network Requirements 2-2 2H23-50R/2H33-37R User’ s Guide 2.3 100B ASE-TX NETW ORK When connecting a 100B ASE-T segment to any ports of CONN 1 through CONN 4 (2H23-50R), CONN 1 through CONN 3 (2H33-37R), or an FE-100TX installed in slot 5 or 6 of the 2H23-50R, the de vice at the other end of the twisted pair segment must meet IEEE 802.
2H23-50R/2H33-37R User’ s Guide 3-1 CHAPTER 3 INSTALLATION This chapter provides the instructions required to install the 2H23-50R or 2H33-37R. Follo w the order of the sections listed below to ensure a proper installation. • Required T ools ( Section 3.
Chapter 3: Installation 3-2 2H23-50R/2H33-37R User’ s Guide 3.2 UNPACKING THE DE VICE T o unpack the device and v erify the contents of the shipment, proceed as follo ws: 1. Open the carton and remove the packing material. 2. Verify the contents of the carton as listed in T able 3-1 .
Installing the Device 2H23-50R/2H33-37R User’ s Guide 3-3 3.4 INSTALLING THE DEVICE The 2H23-50R and 2H33-37R may be installed on a tabletop, shelf, or in a 19-inch rack. Section 3.4.1 describes a tabletop or shelf installation, and Section 3.4.2 describes the rackmount installation.
Chapter 3: Installation 3-4 2H23-50R/2H33-37R User’ s Guide Figure 3-1 T abletop or Shelf Installation 3.4.2 Rackmount Installation T o install the device in a 19-inch rack, note that the de vice is shipped with a rackmount kit containing the rackmount brackets, mounting scre ws, and a strain-relief bracket for cable management.
Installing the Device 2H23-50R/2H33-37R User’ s Guide 3-5 Installation Rack mounting the 2H23-50R or 2H33-37R in volves the follo wing: • Attaching the strain-relief bracket • Rack mounting the .
Chapter 3: Installation 3-6 2H23-50R/2H33-37R User’ s Guide Rack Mounting the De vice Proceed as follo ws to install the 2H23-50R or 2H33-37R into a 19-inch rack: 1. Remove and discard the four cover screws (two from each side) located along the front edges of each side of the device.
Installing the Device 2H23-50R/2H33-37R User’ s Guide 3-7 3.4.3 Connecting P ower to the Device T o connect the device to the po wer sources, proceed as follo ws: 1.
Chapter 3: Installation 3-8 2H23-50R/2H33-37R User’ s Guide 3.5 CONNECTING TO THE NETWORK This section provides the procedures for connecting twisted pair and fiber optic segments from the netw ork or other de vices to the 2H23-50R or 2H33-37R.
Connecting to the Network 2H23-50R/2H33-37R User’ s Guide 3-9 3.5.1 Connecting Cables to CONN 1 Through 4 The de vice uses RJ21 connectors for the cables connected to CONN 1 through CONN 4 (2H23-50R) or CONN 1 through CONN 3 (2H33-37R). Each of the 12 repeater ports associated with each RJ21 connector hav e internal crossov ers.
Chapter 3: Installation 3-10 2H23-50R/2H33-37R User’ s Guide 4. Verify that a link exists on each twisted pair segment of the RJ21 connector by checking that the port Link LEDs above the connector are on (flashing amber, blinking green, or solid green).
Connecting to the Network 2H23-50R/2H33-37R User’ s Guide 3-11 Figure 3-7 FE-100TX Crossover Switc h A schematic of a crossov er cable is sho wn in Figure 3-8 . If the wires do not cross ov er , use the switch on the FE-100TX to internally cross over the RJ45 port.
Chapter 3: Installation 3-12 2H23-50R/2H33-37R User’ s Guide 2. 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 shown in Figure 3-9 . Figure 3-9 FE100-TX Port Connection 3.
Connecting to the Network 2H23-50R/2H33-37R User’ s Guide 3-13 3.5.3 Connecting a Fiber Optic Segment to the FE-100FX and FE-100F3 The FE-100FX and FE-100F3 hav e SC style network ports. See Figure 3-10 . Cabletron Systems of fers optional fiber optic cables that use SC style connectors.
Chapter 3: Installation 3-14 2H23-50R/2H33-37R User’ s Guide 3. At the other end of the fiber optic cable, attach the SC connector to the other device. Figure 3-10 Fiber Optic Cable Connection 4. Verify that a link exists by checking that the port RX LED is on (flashing amber, blinking green, or solid green).
Completing the Installation 2H23-50R/2H33-37R User’ s Guide 3-15 3.6 COMPLETING THE INSTALLATION After installing the 2H23-50R and any optional F ast Ethernet Interface Modules and HSIM as appropriate, and making the connections to the network, proceed as follo ws: 1.
Chapter 3: Installation 3-16 2H23-50R/2H33-37R User’ s Guide.
2H23-50R/2H33-37R User’ s Guide 4-1 CHAPTER 4 T R OUBLESHOOTING This chapter provides information concerning the follo wing: • Using LANVIEW diagnostic and status monitoring system ( Section 4.1 ) • The FE-100TX LED ( Section 4.2 ) • T roubleshooting checklist for network and device operational problems ( Section 4.
Chapter 4: T roubleshooting 4-2 2H23-50R/2H33-37R User’ s Guide Figure 4-2 LANVIEW LEDs (2H33-37R) NO TE The terms flashing , blinking , and solid used in the follo wing tables indicate the f ollowing: Flashing indicates an LED flashing randomly . Blinking indicates an LED is flashing at a steady rate (appro ximately 50% on, 50% off).
Using LANVIEW 2H23-50R/2H33-37R User’ s Guide 4-3 T able 4-1 LANVIEW LEDs LED Color State Recommended Action PWR Green Functional. P ower supplies operating normally . No action. Amber Indicates loss of power supply redundancy . 1. Ensure that the power cords are plugged in correctly and that there is power at the power source .
Chapter 4: T roubleshooting 4-4 2H23-50R/2H33-37R User’ s Guide Interf ace TX (T ransmit) of CONN 1– CONN 4 and P or ts 5 and 6 (2H23-50R) or CONN 1 – CONN 3 (2H33-37R) Off P or t enabled, and no activity . Should flash green e very two seconds indicating BPDUs being sent if ST A is enabled and there is a valid link.
FE-100TX LED 2H23-50R/2H33-37R User’ s Guide 4-5 4.2 FE-100TX LED The optional FE-100TX has one LED labeled 10/100. The 10/100 LED together with the RX LED allo ws the user to determine the link status and the operating speed of the Fast Ethernet Interf ace Module.
Chapter 4: T roubleshooting 4-6 2H23-50R/2H33-37R User’ s Guide T able 4-3 10/100 LED Indications When RX LED Is Off NO TE A link e xists if the associated por t (5 or 6) RX LED is on. T able 4-2 10/100 LED Indications When RX LED Is On LED Color Indication 10/100 Off FE-100TX is operating at 10 Mbps.
T r oubleshooting Checklist 2H23-50R/2H33-37R User’ s Guide 4-7 4.3 T ROUBLESHOOTING CHEC KLIST If the 2H23-50R is not working properly , refer to T able 4-4 for a checklist of possible problems, causes, and recommended actions to resolve the problem.
Chapter 4: T roubleshooting 4-8 2H23-50R/2H33-37R User’ s Guide 4.4 USING THE RESET BUTTON The RESET button sho wn in Figure 4-4 resets the 2H23-50R or 2H33-37R processor . Figure 4-4 RESET Button T o reset the 2H23-50R or 2H33-37R processor, press and release the RESET button.
2H23-50R/2H33-37R User’ s Guide 5-1 CHAPTER 5 LOCAL MANAGEMENT This chapter explains ho w to set up a management terminal to access Local Management. It also explains ho w to use the Local Management screens and commands. 5.1 OVERVIEW Local Management consists of a series of screens that allo w the management of the 2H23-50R or 2H33-37R.
Chapter 5: Local Management 5-2 2H23-50R/2H33-37R User’ s Guide 5.2 LOCAL MANAGEMENT KE YBOAR D CON VENTIONS All ke y names appear as capital letters in this manual. T able 5-1 explains the ke yboard con ventions and the ke y functions that are used.
Management T erminal Setup 2H23-50R/2H33-37R User’ s Guide 5-3 5.3 MANAGEMENT T ERMINAL SETUP Use one of the follo wing systems to access Local Management: • An IBM or compatible PC running a VT s.
Chapter 5: Local Management 5-4 2H23-50R/2H33-37R User’ s Guide 5.3.1 Console Cable Connection Use the Console Cable Kit provided with the 2H23-50R or 2H33-37R to attach the management terminal to the 2H23-50R or 2H33-37R COM port as sho wn in Figure 5-1 .
Management T erminal Setup 2H23-50R/2H33-37R User’ s Guide 5-5 5.3.2 Management T erminal Setup Parameter s T able 5-2 lists the setup parameters for the local management terminal.
Chapter 5: Local Management 5-6 2H23-50R/2H33-37R User’ s Guide 5.3.3 T elnet Connections Once the 2H23-50R or 2H33-37R has a v alid IP address, the user can establish a T elnet session with Local Management from any TCP/IP based node on the network.
Management T erminal Setup 2H23-50R/2H33-37R User’ s Guide 5-7 5.3.4 Monitoring an Uninterruptible P ower Suppl y If the 2H23-50R or 2H33-37R is connected to an American Po wer Con version (APC) Uni.
Chapter 5: Local Management 5-8 2H23-50R/2H33-37R User’ s Guide 5.4 ACCESSING LOCAL MANAGEMENT Access to Local Management is controlled through the Local Management Passw ord screen sho wn in Figure 5-3 . Whene ver a connection is made to the 2H23-50R or 2H33-37R the Local Management Passw ord screen displays.
Accessing Local Management 2H23-50R/2H33-37R User’ s Guide 5-9 5.4.1 Navigating Local Mana gement Screens The 2H23-50R or 2H33-37R Local Management application consists of a series of menu screens. Navigate through Local Management by selecting items from the menu screens.
Chapter 5: Local Management 5-10 2H23-50R/2H33-37R User’ s Guide Figure 5-4 802.1D Switching Mode, LM Screen Hierar chy Figure 5-5 802.1Q Switching Mode, LM Screen Hierar chy Device Menu Password D.
Accessing Local Management 2H23-50R/2H33-37R User’ s Guide 5-11 Figure 5-6 SecureFast VLAN Mode, LM Screen Hierarch y 5.4.2 Selecting Local Management Menu Screen Items Select items on a menu screen by performing the follo wing steps: 1. Use the arrow keys to highlight a menu item.
Chapter 5: Local Management 5-12 2H23-50R/2H33-37R User’ s Guide Using the RETURN Command T o exit LM using the RETURN command, proceed as follows: 1. Use the arrow keys to highlight the RETURN command at the bottom of the Local Management screen. 2.
Device Men u Screen 2H23-50R/2H33-37R User’ s Guide 5-13 5.5 DEVICE MEN U SCREEN The De vice Menu screen is the access point for all Local Management screens.
Chapter 5: Local Management 5-14 2H23-50R/2H33-37R User’ s Guide The follo wing explains each De vice Menu screen field as shown in Figure 5-7 : DEVICE CONFIGURA TION Accesses the De vice Configur.
Device Configuration Men u Screen 2H23-50R/2H33-37R User’ s Guide 5-15 5.6 DEVICE CONFIGURATION MEN U SCREEN The De vice Configuration Menu screen, Figure 5-8 , provides access to a series of Loca.
Chapter 5: Local Management 5-16 2H23-50R/2H33-37R User’ s Guide The follo wing briefly explains each screen that is accessible from the De vice Configuration Menu screen: GENERAL CONFIGURA TION The General Configuration screen allo ws the user to monitor and configure operating parameters for the 2H23-50R or 2H33-37R.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-17 5.7 GENERAL CONFIGURATION SCREEN The General Configuration screen, Figure 5-9 , allo ws the user to set the system date and time, IP address and subnet mask, the Default Gate way , the TFTP Gate way IP address, and the operational mode.
Chapter 5: Local Management 5-18 2H23-50R/2H33-37R User’ s Guide IP Address (Modifiab le) Displays and allo ws the user to set the IP address for the device. T o set the IP address, refer to Section 5.7.1 . The IP address can also be set through Runtime IP Address Discov ery as pre viously described in Section 1.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-19 Screen Lock out Time (Modifiable) Contains the maximum number of minutes that the Local Management application displays the de vice’ s screen while aw aiting input or action from a user .
Chapter 5: Local Management 5-20 2H23-50R/2H33-37R User’ s Guide Com (T oggle) Allo ws the user to enable or disable the COM port. The selection toggles between EN ABLED and DISABLED. The default is EN ABLED. For details about setting up the COM port, refer to Section 5.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-21 5.7.1 Setting the IP Address T o set the IP address, perform the following steps: 1. Use the arrow keys to highlight the IP Address field. 2. Enter the IP address into this field using Dotted Decimal Notation (DDN) format.
Chapter 5: Local Management 5-22 2H23-50R/2H33-37R User’ s Guide 5.7.2 Setting the Subnet Mask If the management workstation that is to recei ve SNMP traps from the 2H23-50R or 2H33-37R is located on a separate subnet, the subnet mask for the 2H23-50R or 2H33-37R may need to be changed from its default.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-23 5. Use the arrow keys to highlight the YES command, then press ENTER. The changes are saved and the device reboots.
Chapter 5: Local Management 5-24 2H23-50R/2H33-37R User’ s Guide 3. Press ENTER. If the TFTP gateway IP address entered is a valid format, the cursor returns to the beginning of the TFTP Gateway IP Address field. If the entry is not valid, the screen displays “INVALID TFTP GATEWAY IP ADDRESS OR FORMAT ENTERED”.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-25 5.7.6 Setting the Device Time T o set the device time, perform the follo wing steps: 1. Use the arrow keys to highlight the Device Time field. 2. Enter the time in this 24-hour format: HH:MM:SS 3.
Chapter 5: Local Management 5-26 2H23-50R/2H33-37R User’ s Guide 5.7.8 Setting the Screen Lock out Time The screen lockout time can be set from 1 to 30 minutes with a default of 15 minutes. T o set a ne w lockout time, perform the follo wing steps: 1.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-27 Figure 5-12 Configuration W arning Screen 4. Use the arrow keys to highlight the YES command, then press ENTER. The changes are saved and the device reboots. NO TE If the 2H23-50R or 2H33-37R is set to 802.
Chapter 5: Local Management 5-28 2H23-50R/2H33-37R User’ s Guide 5.7.10 Configuring the COM P or t Upon po wer up, the COM port is configured to the default settings of EN ABLED and LM.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-29 Figure 5-13 COM Port W arning Screen 4. Use the arrow keys to highlight YES . Press ENTER. 5. If the port was ENABLED, proceed to step 6. If the port was DISABLED, use the arrow keys to highlight SAVE at the bottom of the screen, then press ENTER.
Chapter 5: Local Management 5-30 2H23-50R/2H33-37R User’ s Guide 5.7.10.1 Changing the COM P or t Application After enabling the COM port as described in Section 5.7.10 , one of the applications supported by the COM port (LM or UPS) can be selected.
General Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-31 Clear NVRAM as follo ws: 1. Use the arrow keys to highlight the Clear NVRAM field. 2. Use the SPACE bar to toggle the field to YES . 3. Use the arrow keys to highlight SAVE at the bottom of the screen.
Chapter 5: Local Management 5-32 2H23-50R/2H33-37R User’ s Guide 5.7.12 Enabling/Disabling IP Fragmentation T o enable or disable IP Fragmentation, proceed as follows: 1. Use the arrow keys to highlight the IP Fragmentation field. 2. Press the SPACE bar to choose either ENABLED or DISABLED .
SNMP Community Names Screen 2H23-50R/2H33-37R User’ s Guide 5-33 5.8 SNMP COMMUNITY NAMES SCREEN The SNMP Community Names screen, Figure 5-15 , allo ws the user to set SNMP Management community names. Community names act as passwords to Local/Remote Management and are agents of security access to the 2H23-50R or 2H33-37R.
Chapter 5: Local Management 5-34 2H23-50R/2H33-37R User’ s Guide The follo wing explains each SNMP Community Names screen field: Community Name (Modifiab le) Displays the user-defined name through which a user accesses the 2H23-50R or 2H33-37R SNMP Management.
SNMP Community Names Screen 2H23-50R/2H33-37R User’ s Guide 5-35 5.8.1 Establishing Comm unity Names The password used to access Local Management at the P assword Screen must hav e super-user access to vie w and edit the SNMP Community Names screen.
Chapter 5: Local Management 5-36 2H23-50R/2H33-37R User’ s Guide 5.9 SNMP T RAPS SCREEN Since the 2H23-50R or 2H33-37R is an SNMP compliant de vice, it can send messages to multiple Network Management Stations to alert users of status changes. The SNMP Traps screen is sho wn in Figure 5-16 .
SNMP T raps Screen 2H23-50R/2H33-37R User’ s Guide 5-37 Enable T raps (T oggle) Enables transmission of the traps to the network management station with the associated IP address. This field toggles between YES and NO. 5.9.1 Configuring the T rap T able T o configure the T rap table, proceed as follows: 1.
Chapter 5: Local Management 5-38 2H23-50R/2H33-37R User’ s Guide 5.10 SWITCH CONFIGURATION SCREEN The Switch Configuration screen, Figure 5-17 , provides the basic setup options to make a switch operational in your network.
Switch Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-39 Figure 5-17 Switch Configuration Screen The follo wing describes each field of the Switch Configuration screen: Switch Address (Read-Only) Displays the MA C address of the device.
Chapter 5: Local Management 5-40 2H23-50R/2H33-37R User’ s Guide Depending on the optional interfaces installed and if the de vice is a 2H23-50R or 2H33-37R, there can be 10 or 7 switched or network ports. T able 5-5 shows the CONN/port or ganization.
Switch Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-41 MA C Address (Read-Only) Displays the hardware address assigned to each listed port. State (Read-Only) There are five states that can display in this field. These states are described as follo ws: Disabled: Management disabled this interface.
Chapter 5: Local Management 5-42 2H23-50R/2H33-37R User’ s Guide 5.10.1 Setting the ST A T o set the ST A, proceed as follo ws: 1. Use the arrow keys to highlight the Type of STA field. 2. Use the SPACE bar to step to the appropriate setting of IEEE , DEC , or NONE .
Device Specific Configuration Men u Screen 2H23-50R/2H33-37R User’ s Guide 5-43 5.11 DEVICE SPECIFIC CONFIGURATION MENU SCREEN The De vice Specific Configuration Menu screen, Figure 5-18 , allo ws the user to select one of five screens to configure ports or check system resources specific to the 2H23-50R or 2H33-37R.
Chapter 5: Local Management 5-44 2H23-50R/2H33-37R User’ s Guide The follo wing briefly defines each selectable item of the De vice Specific Configuration Menu screen: SYSTEM RESOURCES The Syste.
System Resources Screen 2H23-50R/2H33-37R User’ s Guide 5-45 REPEA TER CONFIGURA TION MENU The Repeater Configuration Menu screen enables the user to select the Repeater Port Configuration screen,.
Chapter 5: Local Management 5-46 2H23-50R/2H33-37R User’ s Guide The follo wing briefly defines each field of the System Resources screen. CPU T ype (Read-only) Indicates the microprocessor used in the 2H23-50R or 2H33-37R.
High Speed Interface Configuration Screen (2H23-50R Only) 2H23-50R/2H33-37R User’ s Guide 5-47 5.13 HIGH SPEED INTERFACE CONFIGURATION SCREEN (2H23-50R ONLY) T o access the High Speed Interface Con.
Chapter 5: Local Management 5-48 2H23-50R/2H33-37R User’ s Guide Figure 5-20 High Speed Interface Configuration Screen The follo wing briefly defines each field of the High Speed Interface Configuration screen. P or t T ype (Read-only) Displays the type of interface (FE-100FX, FE-100TX, FE-100F3, or Unkno wn) installed in slots 5 and 6.
High Speed Interface Configuration Screen (2H23-50R Only) 2H23-50R/2H33-37R User’ s Guide 5-49 Current Oper . Mode (Read-only) This field displays the current operating mode of slots 5 and 6.
Chapter 5: Local Management 5-50 2H23-50R/2H33-37R User’ s Guide Advertised Ability (Selectable) During auto-negotiation, the FE-100TX informs the de vice at the other end of the segment about its capabilities.
High Speed Interface Configuration Screen (2H23-50R Only) 2H23-50R/2H33-37R User’ s Guide 5-51 5.13.2 Configuring an FE-100TX In normal operation, a slot (5 or 6) with an FE-100TX interface automatically establishes a link with the de vice at the other end of the segment and no user setup is required.
Chapter 5: Local Management 5-52 2H23-50R/2H33-37R User’ s Guide 3. Use the arrow keys to move to the Enable/Disable field at the right of the desired mode and use the SPACE bar to select Enabled or Disabled . Press ENTER. 4. Continue this process until you have completed enabling or disabling the advertised modes.
Flash Download Screen 2H23-50R/2H33-37R User’ s Guide 5-53 Figure 5-21 Flash Download Screen The follo wing briefly defines each field of the Flash Do wnload screen: Download Method (Selectab le) This field toggles between BOO TP , TFTP , and R UNTIME.
Chapter 5: Local Management 5-54 2H23-50R/2H33-37R User’ s Guide Reboot After Download (Modifiab le only when the user chooses R UNTIME) This field notifies the user that the 2H23-50R or 2H33-37R will reboot after the do wnload is complete. If a Runtime Do wnload is performed, this field toggles between YES and NO.
Flash Download Screen 2H23-50R/2H33-37R User’ s Guide 5-55 5.14.1 Image File Download Using BootP T o set the 2H23-50R or 2H33-37R to download a firmware image to FLASH memory using BootP , proceed as follows: 1. Use the arrow keys to highlight the Download Method field.
Chapter 5: Local Management 5-56 2H23-50R/2H33-37R User’ s Guide 9. Use the arrow keys to highlight EXECUTE at the bottom of the screen and press ENTER. The message “TFTP DOWNLOAD. WILL COMMIT TO FLASH. REBOOT IN PROGRESS...” displays in the event message line at the top of the screen and the new image is downloaded into FLASH memory.
P or t Redirect Function Screen 2H23-50R/2H33-37R User’ s Guide 5-57 5.15 P ORT REDIRECT FUNCTION SCREEN The Port Redirect Function screen, Figure 5-22 , enables the user to set each Network, F ast Ethernet, or HSIM port as a source or destination port.
Chapter 5: Local Management 5-58 2H23-50R/2H33-37R User’ s Guide Port Redirect operates at a switch interface le v el and not at a repeater port le vel. If traf fic is redirected to interf aces that include acti ve repeater ports, then the redirected traf fic is transmitted out all of the repeater ports connected to the interface.
P or t Redirect Function Screen 2H23-50R/2H33-37R User’ s Guide 5-59 Remap Error s (Read-only) Displays whether the corresponding source ports are configured (ON) to send errored frames to the destination ports, or (OFF) to drop all errored frames and only forward traf fic without errored frames to the destination ports.
Chapter 5: Local Management 5-60 2H23-50R/2H33-37R User’ s Guide 5.15.2 Changing Source and Destination P or ts Add or delete source port and destination port entries as follo ws: 1.
Broadcast Suppression Screen 2H23-50R/2H33-37R User’ s Guide 5-61 5.16 BROADCAST SUPPRESSION SCREEN The Broadcast Suppression screen, Figure 5-23 , enables the user to set a desired limit of recei ve broadcast frames that are switched out to the other Network, F ast Ethernet, or HSIM ports.
Chapter 5: Local Management 5-62 2H23-50R/2H33-37R User’ s Guide The follo wing explains each field of the Broadcast Suppression screen: PORT # (Read-only) Identifies the number of the switched port. T en ports are displayed in a 2H23-50R and se ven ports in a 2H33-37R.
Broadcast Suppression Screen 2H23-50R/2H33-37R User’ s Guide 5-63 5.16.1 Setting the Threshold T o set the Threshold, proceed as follo ws: 1. Use the arrow keys to highlight the Threshold field for the selected port. 2. Type in the numbers for the desired limit.
Chapter 5: Local Management 5-64 2H23-50R/2H33-37R User’ s Guide 5.17 THE VLAN MAIN MENU (802.1Q) SCREEN The VLAN Main Menu (802.1Q) screen, Figure 5-24 , accesses VLAN functionality . T o access the 802.1Q VLAN Configuration screen from the De vice Specific Configuration Menu screen, use the arro w ke ys to highlight the 802.
Repeater Configuration Menu Screen 2H23-50R/2H33-37R User’ s Guide 5-65 5.18 REPEATER CONFIGURATION MENU SCREEN The Repeater Configuration Menu screen, Figure 5-25 , is used to access the Repeater Port Configuration, Repeater Le vel Security Configuration, or Port Le vel Security Configuration screen.
Chapter 5: Local Management 5-66 2H23-50R/2H33-37R User’ s Guide The follo wing introduces each screen that is accessible from the Repeater Configuration Menu.
Repeater P or t Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-67 Figure 5-26 Repeater Port Configuration Screen The follo wing are definitions for each field of the Repeater Port Configuration screen: PORT# (Read-only) Indicates the repeater port on the connector selected in the CONNECTOR field.
Chapter 5: Local Management 5-68 2H23-50R/2H33-37R User’ s Guide NETWORK# (Read-only) Indicates the network on the connector selected in the CONNECT OR field. T able 5-9 shows the association between the CONN and Network Ports on the de vice. LINK ST A T .
Repeater P or t Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-69 MODE PORT ST A T . (T oggle) Used to enable (turn on) or disable (turn of f) the port. T o set the port to operating mode, refer to Section 5.19.2 . SET ALL PORTS (Selectab le) Used to select operating mode for all the ports on the connector simultaneously .
Chapter 5: Local Management 5-70 2H23-50R/2H33-37R User’ s Guide 5.19.2 Enabling /Disabling P or ts T o enable or disable one or more ports, proceed as follows: 1. Use the arrow keys to highlight the CONNECTOR # field. 2. Use the SPACE bar to step to the number of the connector containing the network(s) to be enable or disabled.
Device Le vel Security Configuration 2H23-50R/2H33-37R User’ s Guide 5-71 5.19.4 Enabling/Disabling Netw ork P or ts All the network ports on a connector can be set to the same operating mode simultaneously using the SET ALL POR TS field, as follo ws: 1.
Chapter 5: Local Management 5-72 2H23-50R/2H33-37R User’ s Guide T o access the Device Le vel Security Configuration screen, use the arro w ke ys to highlight the DEVICE LEVEL SECURITY CONFIGURA TION menu item on the Repeater Configuration Menu screen and press ENTER.
Device Le vel Security Configuration 2H23-50R/2H33-37R User’ s Guide 5-73 Security State (Selectable) Used to select the state of security for frames recei ved by an y port on the connector . The states are as follo ws: • PortMismatch – Indicates that not all ports on the connector are set to the same state.
Chapter 5: Local Management 5-74 2H23-50R/2H33-37R User’ s Guide Action On Intruder (T oggle) Used to select the actions taken for the selected security state. There are two fields to select the actions. Both toggle to acti vate or deacti v ate the action.
P or t Level Security Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-75 5.21 P ORT LEVEL SECURITY CONFIGURATION SCREEN The Port Le vel Security Configuration screen, Figure 5-28 , functions similarly to the De vice Le v el Security Configuration screen, except that it is used to set the security of each port of a selected connector .
Chapter 5: Local Management 5-76 2H23-50R/2H33-37R User’ s Guide The follo wing section defines the fields on the Port Le vel Security Configuration screen. Po r t (Read-only) Indicates the repeater port on the connector selected in the CONNECTOR # field.
P or t Level Security Configuration Screen 2H23-50R/2H33-37R User’ s Guide 5-77 Security State (Selectable) Used to select the state of security for frames recei ved by a specific port on the connector . The states are as follo ws: • PortMismatch – Indicates that not all ports on the connector are set to the same state.
Chapter 5: Local Management 5-78 2H23-50R/2H33-37R User’ s Guide Address (Modifiab le) Enables the user to enter an address to which the security function is applied. When the port detects any other address in a frame, the switch ex ecutes the action selected in the Action On Intruder field.
Device Statistics Men u Screen 2H23-50R/2H33-37R User’ s Guide 5-79 11. To change the security on more than one connector, repeat steps 1 through 9 for each connector. Then proceed to step 12 to save all settings at once. 12. Use the arrow keys to highlight the SAVE command.
Chapter 5: Local Management 5-80 2H23-50R/2H33-37R User’ s Guide Figure 5-29 Device Statistics Menu Screen The De vice Statistics Menu screen displays the follo wing menu items: SWITCH ST A TISTICS The Switch Statistics screen lists the number of frames recei ved, transmitted, filtered, and forwarded by each network port.
Switch Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-81 REPEA TER ST A TISTICS The Repeater Statistics screen provides the operating statistics for each Network port (1 through 8 for the 2H23-50R, or 1 through 6 for the 2H33-37R). This screen also displays the statistics for each repeater port.
Chapter 5: Local Management 5-82 2H23-50R/2H33-37R User’ s Guide The Switch Statistics screen displays the follo wing fields: Po r t # (Read-Only) Identifies the port. There can be ten or se ven ports depending on whether the de vice is a 2H23-50R or 2H33-37R, respecti vely .
Interface Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-83 CLEAR COUNTERS (Command) This command clears all the counters of the displayed ports to zero. T o clear the counters, use the arrow keys to highlight CLEAR COUNTERS at the bottom of the screen, then press ENTER.
Chapter 5: Local Management 5-84 2H23-50R/2H33-37R User’ s Guide The follo wing definitions explain each field of the Interf ace Statistics screen: Interface (Read-Only) This field displays the Interface number for which statistics are currently being displayed.
Interface Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-85 OutOctets (Read-Only) This field displays the total number of octets (bytes) that hav e been transmitted from the interface. OutUnicast (Read-Only) The OutUnicast field displays the total number of frames transmitted that were sent to a single address.
Chapter 5: Local Management 5-86 2H23-50R/2H33-37R User’ s Guide MTU (Read-Only) The MTU field displays the maximum frame size (in octets) that a frame may contain to be recei ved or transmitted from this interf ace. Speed (Read-Only) The Speed field displays the theoretical maximum of the interface’ s bandwidth in bits per second.
RMON Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-87 5.24.2 Using the Clear Counters Command T o reset all the statistics counters of the selected interface to zero, perform the follo wing steps: 1. Use the arrow keys to highlight the CLEAR COUNTERS command field.
Chapter 5: Local Management 5-88 2H23-50R/2H33-37R User’ s Guide The follo wing briefly defines each field of the RMON Statistics screen: RMON Index (Read-only) This field displays the current Ethernet interface for which statistics are being sho wn.
RMON Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-89 Drop Events (Read-only) This field displays the total number of times that the RMON agent was forced to discard frames due to the lack of av ailable switch resources. Collisions (Read-only) This field displays the total number of collisions that hav e occurred on this interface.
Chapter 5: Local Management 5-90 2H23-50R/2H33-37R User’ s Guide Fragments (Read-only) This field displays the number of recei ved frames that are not the minimum number of bytes in length or recei ved frames that had a bad CRC, were less than 64 bytes in length (excluding framing bits, b ut including CRC bytes).
RMON Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-91 512 – 1023 Octets (Read-only) Displays the total number of frames, including bad frames, recei ved that were between 512 and 1023 bytes in length (excluding framing bits, b ut including FCS bytes).
Chapter 5: Local Management 5-92 2H23-50R/2H33-37R User’ s Guide 5.26 REPEATER STATISTICS SCREEN Operating statistics for each repeater port (1 through 48 for the 2H23-50R, or 1 through 36 for the 2H33-37R) and its corresponding network interface are displayed via the Repeater Statistics screen sho wn in Figure 5-33 .
Repeater Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-93 T able 5-15 shows the association between the CONN and Network Ports for the 2H23-50R and 2H33-37R. P or t # (Read-Only) Indicates the current repeater port for which statistics are displayed.
Chapter 5: Local Management 5-94 2H23-50R/2H33-37R User’ s Guide T otal Err ors (Read-only) Displays the total number of errors. Collisions (Read-only) Displays the total number of collisions that were detected. OO W Collisions (Read-only) Displays the number of Out Of W indow (OO W) collision errors detected.
Repeater Statistics Screen 2H23-50R/2H33-37R User’ s Guide 5-95 Admin Status (Read-only) Indicates if the network or port is enabled ( Enabled ) or disabled ( Disabled ). NETWORK # (Command) This command is used to select a particular Network to vie w its statistics.
Chapter 5: Local Management 5-96 2H23-50R/2H33-37R User’ s Guide 5.26.3 Using the Clear Counters Command T o reset all the statistics counters of the selected port to zero, perform the follo wing steps: 1. Use the arrow keys to highlight the CLEAR COUNTERS command field at the bottom of the screen.
Network T ools 2H23-50R/2H33-37R User’ s Guide 5-97 There are two cate gories of commands in the command set. • Built-in Commands – Allo w the user to access and manage network de vices. The commands are ar p , bridge , defroute , netstat , ping , reset , sho w , tracer oute , soft-reset , telnet , link_trap , and atm_stp_state .
Chapter 5: Local Management 5-98 2H23-50R/2H33-37R User’ s Guide 5.27.1 Built-in Commands The built-in commands listed in this section acti vate functions on the LM managed de vice or de vices being accessed through Network T ools.
Network T ools 2H23-50R/2H33-37R User’ s Guide 5-99 Example: bridge: Syntax: bridge [EN ABLE/DISABLE] [IFNUM/ALL] Description: The bridge command allo ws the bridge interface to be enabled or disabled at the user’ s request, either one at a time or all at once.
Chapter 5: Local Management 5-100 2H23-50R/2H33-37R User’ s Guide defroute: Syntax: defroute defroute [interface number] [IP address] defroute delete [interface number] [IP address] Description: The.
Network T ools 2H23-50R/2H33-37R User’ s Guide 5-101 Example: ping: Syntax: ping [IP address] Description: The ping command generates an outbound ping request to check the status (ali ve/not ali v e) of a de vice at a specified IP address.
Chapter 5: Local Management 5-102 2H23-50R/2H33-37R User’ s Guide reset: Syntax: reset Description: This reset command initiates a hardware reset of the de vice. The reset command initializes the CPU processor , runs the onboard diagnostics, and restarts the software image, which restores the user configuration settings from NVRAM.
Network T ools 2H23-50R/2H33-37R User’ s Guide 5-103 Example: traceroute: Syntax: traceroute [IP address] Description: The traceroute command generates a TRA CER OUTE request to a specified IP address and provides a display of all ne xt-hop routers in the path to the de vice.
Chapter 5: Local Management 5-104 2H23-50R/2H33-37R User’ s Guide soft_reset Syntax: soft_reset Description: This command restarts the software image, which restores the user configuration settings from NVRAM. The user will be queried to confirm the reset command to ensure against unwanted resets.
Network T ools 2H23-50R/2H33-37R User’ s Guide 5-105 Example: link_trap: Syntax: link_trap [enable/disable/status] [POR T/all] Description: The link_trap command allo ws link traps to be enabled or disabled when specifying a single port, or simultaneously when specifying “all” or no ports.
Chapter 5: Local Management 5-106 2H23-50R/2H33-37R User’ s Guide atm_stp_state: Syntax: atm_stp_state [ST A TE] Description: The atm_stp_state command allo ws the user to enable, disable, or check the status of the Spanning T ree Algorithm on all A TM interfaces.
Network T ools 2H23-50R/2H33-37R User’ s Guide 5-107 5.27.2 Special Commands done, quit, exit: Syntax: done, quit, or exit Description: The done, quit, or exit command enables the user to exit from Netw ork T ools and return to the Main Menu screen.
Chapter 5: Local Management 5-108 2H23-50R/2H33-37R User’ s Guide.
2H23-50R/2H33-37R User’ s Guide A-1 APPENDIX A SPECIFICATIONS This appendix provides operating specifications for the 2H23-50R and 2H33-37R. Cabletron Systems reserves the right to change these specifications at any time without notice. A.1 DEVICE SPECIFICATIONS A.
Appendix A: Specifications A-2 2H23-50R/2H33-37R User’ s Guide A.3 ELECTRICAL SPECIFICATIONS A.4 EN VIR ONMENTAL REQUIREMENTS A.5 INPUT/OUTPUT P ORTS Line Input Range V olts (V) Input Current Amperes (A) Frequency Hertz (Hz) Input P ower V olt Amps (V A) 100–125 V ac 2.
COM P or t Pinout Assignments 2H23-50R/2H33-37R User’ s Guide A-3 A.6 COM P ORT PINOUT ASSIGNMENTS The COM port is a serial communications port that supports Local Management or connection to a UPS.
Appendix A: Specifications A-4 2H23-50R/2H33-37R User’ s Guide.
2H23-50R/2H33-37R User’ s Guide B-1 APPENDIX B FE-100TX, FE-100FX, AND FE-100F3 SPECIFICATIONS The 2H23-50R supports three Fast Ethernet Interf ace Modules: • FE-100TX ( Section B.1 ) • FE-100FX ( Section B.2 ) • FE-100F3 ( Section B.3 ) This appendix provides the specifications for these modules.
Appendix B: FE-100TX, FE-100FX, and FE-100F3 Specifications B-2 2H23-50R/2H33-37R User’ s Guide B.2 FE-100FX The FE-100FX sho wn in Figure B-2 uses an SC style connector that supports multimode fiber optic cabling. Specifications for the FE-100FX are listed in T able B-1 , below .
FE-100F3 2H23-50R/2H33-37R User’ s Guide B-3 B.3 FE-100F3 The FE-100F3 sho wn in Figure B-3 uses an SC style connector that supports single mode fiber optic cabling.
Appendix B: FE-100TX, FE-100FX, and FE-100F3 Specifications B-4 2H23-50R/2H33-37R User’ s Guide.
2H23-50R/2H33-37R User’ s Guide C-1 APPENDIX C OPTIONAL INSTALLATIONS AND MODE SWITCH BANK SETTINGS The top cov er must be remov ed to gain access to the mode bank switches and to install the Fast Ethernet Interf ace Modules and the High Speed Interface Module.
Appendix C: Optional Installations and Mode Switch Bank Settings C-2 2H23-50R/2H33-37R User’ s Guide C.2 REMOVING THE CHASSIS CO VER This section describes ho w to remov e the 2H23-50R/2H33-37R chassis cove r . DO NO T REMO VE THE CO VER FROM THE 2H23-50R/2H33-37R WHILE POWER IS APPLIED T O THE UNIT .
Removing the Chassis Co ver 2H23-50R/2H33-37R User’ s Guide C-3 T o remove the chassis co ver , proceed as follo ws: 1. Disconnect the 2H23-50R or 2H33-37R from the network as follows: a. Unplug both po wer cords from the rear of the chassis. b. Disconnect all network cables attached to the device.
Appendix C: Optional Installations and Mode Switch Bank Settings C-4 2H23-50R/2H33-37R User’ s Guide 3. Use a Phillips screwdriver to remove the screws attaching the cover to the chassis. (See Figure C-1 .) 4. Remove the cover by sliding it back until it clears the front of the chassis and then lifting it straight up and off the chassis.
Removing the Chassis Co ver 2H23-50R/2H33-37R User’ s Guide C-5 Figure C-2 Mode Switch Location/Component Lay out Switch definitions and positions are as follo ws: • Switches 1 through 4 – For Cabletron Systems use only . • Switch 5 – COM Port Autobaud.
Appendix C: Optional Installations and Mode Switch Bank Settings C-6 2H23-50R/2H33-37R User’ s Guide • Switch 7 – Clear NVRAM. Changing the position of this switch resets NVRAM on the next po wer-up. All user -entered parameters, such as the IP address, de vice names, etc.
Installing Optional Fast Ethernet Interface Modules 2H23-50R/2H33-37R User’ s Guide C-7 C.3 INSTALLING OPTIONAL FAST ETHERNET INTERFACE MODULES Figure C-3 sho ws the locations of the Fast Ethernet Interf ace Module connectors for ports 5 and 6 on the 2H23-50R, and the High Speed Interface Module on the 2H33-37R.
Appendix C: Optional Installations and Mode Switch Bank Settings C-8 2H23-50R/2H33-37R User’ s Guide T o install a Fast Ethernet Interface Module in port slot 5 or 6 of the 2H23-50R, proceed as follo ws: 1. Remove the coverplate from the port slot where the Fast Ethernet Interface Module is to be installed.
Installing Optional Fast Ethernet Interface Modules 2H23-50R/2H33-37R User’ s Guide C-9 Figure C-4 Coverplate Remov al 2. Remove the screw from the rear standoff. Save the screw. 3. See Figure C-5 . Gently pull the faceplate of the 2H23-50R forward to allow room for the Fast Ethernet Interface Modules to be aligned over the connector.
Appendix C: Optional Installations and Mode Switch Bank Settings C-10 2H23-50R/2H33-37R User’ s Guide 4. Carefully lower the Fast Ethernet Interface Module onto the standoffs while inserting the module connector into the associated motherboard connector.
2H23-50R/2H33-37R User’ s Guide Index-1 INDEX Numerics 10BASE-T connection 3-9 length 2-2 requirements 2-1 2H23-50R and 2H33-37R front panel 1-2 802.
Index Index-2 2H23-50R/2H33-37R User’ s Guide G General Configuration screen 5-17 application 5-20 clear NVRAM 5-20 com 5-20 default gateway 5-18, 5-23 device date 5-18 device time 5-18, 5-19, 5-24,.
Index 2H23-50R/2H33-37R User’ s Guide Index-3 N Port Redirect Function screen destination port 5-59 source port 5-59 Network connection FE-100FX/FE-100F3 3-13 FX-100TX 3-10 Network Connections 3-8 N.
Index Index-4 2H23-50R/2H33-37R User’ s Guide collisions 5-94 CRC errors 5-94 frames received 5-93 link status 5-94 multicasts transmitted/ received 5-94 NETWORK # 5-95 network # 5-92 OOW collisions.
Index 2H23-50R/2H33-37R User’ s Guide Index-5 Security setting at the device level 5-74 setting at the port level 5-78 Setup of management terminal 5-5 SmartTrunk introduction to 1-5 SNMP Community .
Index Index-6 2H23-50R/2H33-37R User’ s Guide.
デバイスCabletron Systems 2H23-50Rの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Cabletron Systems 2H23-50Rをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはCabletron Systems 2H23-50Rの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Cabletron Systems 2H23-50Rの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Cabletron Systems 2H23-50Rで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Cabletron Systems 2H23-50Rを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はCabletron Systems 2H23-50Rの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Cabletron Systems 2H23-50Rに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちCabletron Systems 2H23-50Rデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
