DEChub 900 MultiSwitch Owner’s Manual Part Number: EK–DH2MS–OM. B01 April 1994 Revision/Update Information: This is a revised manual.
April 1994 The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document. Copyright 1994 by Digital Equipment Corporation. All rights reserved. Printed in U.S.A. The postage-paid Reader’s Comments form at the back of this document requests your evaluation of this document to assist us in preparing future documentation.
Contents Preface Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Structure of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documentation . . . . . . . . . . . . . .
Resetting the Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Resetting a Non-Battery Backup Power System . . . . . . . . . . . . . . . . . . . Resetting a Battery Backup Power System . . . . . . . . . . . . . . . . . . . . . . . Optional Mounting Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Hub Manager Hub Manager Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Problem Solving A Order Numbers and Specifications Country-Specific Order Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures vi 1–1 The DEChub 900 MultiSwitch Hub . . . . . . . . . . . . . . . . . . . . . . . . . 1–3 1–2 Connector Backplane Data Path Interconnects . . . . . . . . . 1–5 1–3 2–1 2–2 2–3 2–4 2–5 2–6 2–7 The DEChub 900 MultiSwitch Chassis . . . . . . . . . . . . . . . . . . . . . . Attaching Rack Mount Brackets to the Chassis . . . . . . . . . . . . . . . Cable Ring Bracket on a 19-inch Rack . . . . . . . . . . . . . . . . . . . . . . Installing the Wall Mounting Bracket . . . . . . . . . . . . . . .
Tables 2–1 3–1 3–2 3–3 3–4 5–1 5–2 6–1 A–1 A–2 A–3 A–4 A–5 A–6 A–7 A–8 A–9 A–10 A–11 Dechub 900 MultiSwitch Kit Content1 . . . . . . . . . . . . . . . . . . . . . . . Setup Port Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OBM Port Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hub Status Display Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Terminal Setup Parameters . . . . . . . . . . . . . . . . . . .
Preface This manual provides an overview of the DEChub 900 MultiSwitch hub. It also describes how to install, manage, and troubleshoot the hub. Intended Audience This manual is for personnel who will install and use the DEChub 900 MultiSwitch hub. Structure of This Manual This manual has six chapters and three appendixes, as follows: Chapter Description 1 Provides an overview of the DEChub 900 MultiSwitch hub. 2 Describes how to install the DEChub 900 MultiSwitch hub. 3 Describes the Hub Manager.
Conventions Used in This Manual This manual uses the following conventions: x 1 A number in a black circle in text refers to the corresponding number in an accompanying figure. Special type Indicates a literal example of system output. bold Indicates a command format that you enter. italic type Indicates a variable for which you specify a value. Also used to emphasize complete titles of manuals. Key Indicates that you press the specified key.
Safety ! Any warning or caution that appears in this manual is defined in English, German, French, and Spanish as follows: WARNING Contains information to prevent personal injury VORSICHT Enthält Informationen, die beachtet werden müssen, um den Benutzer vor Schaden zu bewahren. DANGER Signale les informations destinées à prévenir les accidents corporels.
The pages where the following safety messages appear are also listed. WARNING xii ! This is a Class A product. In a domestic environment this product may cause radio interference, in which case the user may be required to take adequate measures. VORSICHT Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen verantwortlich ist.
CAUTION ! The total weight of a fully configured DEChub 900 MultiSwitch chassis with modules and cables is approximately 80 pounds. [Page 2–6] This configuration is too heavy for an office wall partition. Be sure to install the chassis on a solid wall. [Page 2–6] ACHTUNG Das Gesamtgewicht einer vollständig konfigurierten Geräts vom Typ DEChub MultiSwitch beträgt etwa 36 kg. Diese Konfiguration ist für Leichtbauwände zu schwer. Hängen Sie das Gerät nur an stabilen Wänden auf.
WARNING To avoid bodily injury or equipment damage, use care when connecting the power cord. [Page 2–10] VORSICHT Um mögliche Verletzungen oder Geräteschäden durch elektrischen Strom zu vermeiden, seien Sie besonders vorsichtig, wenn Sie das Netzkabel anschliessen. DANGER Lors de la connexion du cordon d’alimentation, prenez toutes les précautions nécessaires afin d’éviter tout risque corporel ou dommage matériel.
CAUTION ! This action deletes all configured settings and replaces them with factory default values. All configuration settings will be lost. [Page 3–12] ACHTUNG Bei diesem Vorgang werden alle Konfigurationseinstellungen gelöscht und die Werkseinstellungen wieder eingesetzt. Alle Konfigurationsdaten gehen verloren. ATTENTION Cette action supprime tous les paramètres de configuration et les remplace par des valeurs prédéfinies. Tous les paramètres de configuration seront perdus.
Related Documentation You can order the following documents from Digital: Document Title xvi Description HUBwatch Installation and Configuration AA–Q0FXB–TE Provides information for installing and configuring HUBwatch for Open VMS V3.0 and HUBwatch for Windows V2.0. HUBwatch Installation and Configuration AA–Q3S8A–TE Provides information for installing and configuring HUBwatch for Open VMS V2.0 and HUBwatch for Windows V2.0.
1 Overview This chapter describes the DEChub 900 MultiSwitch hub. It includes an overview of the features, and it describes the hub power system and backplane capabilities. The DEChub 900 MultiSwitch hub complements Digital’s DEChub 90 and DEChub ONE family of products. The DEChub 900 MultiSwitch hub uses advanced hub technology to provide complete backward compatibility with the DEChub 90 network modules.
DEChub 900 MultiSwitch Hub Features The DEChub 900 MultiSwitch (see Figure 1–1) has many advanced hub capabilities.
Figure 1–1: The DEChub 900 MultiSwitch Hub Hub Status Display Power supply modules Half-height network modules Full-height network modules LKG-8263-93I Overview 1–3
DEChub 900 MultiSwitch Hub Description The DEChub 900 MultiSwitch hub implements a management architecture designed to manage multiple local area networks (LANs) using the Simple Network Management Protocol (SNMP) integrated into the chassis’s Hub Manager. The DEChub 900 MultiSwitch hub backplane (see Figure 1–2) contains two independent Token Ring channels, one dedicated Ethernet channel, and one flexible channel on the top row of connectors.
Figure 1–2: Connector Backplane Data Path Interconnects DEChub 900 MultiSwitch 1 2 3 4 5 6 7 1 2 Power supply connectors 8 Ethernet ThinWire Flexible channel Token Ring A Token Ring B 3 4 Power supply connectors 14 Flexible channels LKG-8310-93I Overview 1–5
Figure 1–3: The DEChub 900 MultiSwitch Chassis 11 12 10 13 9 8 1 10 9 2 8 3 4 7 3 6 5 Bottom view LKG-8264-93I 1–6 DEChub 900 MultiSwitch Owner’s Manual
1 Release lever – Releases the backplane latching mechanism when removing and installing network modules. 2 Backplane connector – Provides power, network connection, and management signals to network modules. 3 Module mounting slot – Secures the lower mounting tab of a network module. The slots for modules are numbered 1 through 8 from left to right. 4 MultiSwitch connector – Provides additional power for full-height network modules with power management.
Hub Power System Overview The DEChub 900 MultiSwitch hub power system can: • Power a fully-configured hub with power redundancy • Monitor the power activity • Calculate the power available to network modules • Display the power status and available power • Allocate power to network modules. The power system consists of 1 to 4 power supply modules, and a Hub Manager that monitors and polls each power supply for identification and status.
Power supply modules can be hot swapped while the DEChub 900 MultiSwitch hub is operating. This feature allows you to remove faulty power supply modules, add extra power supply modules, or move power supply modules to other slots without interrupting power or network modules. If a power supply module fails or is removed from a hub that is not configured for N+1 redundancy, then the hub does not have sufficient power for operation.
2 Installing the Chassis and Power Supply Module This chapter provides procedures for installing the DEChub 900 MultiSwitch chassis on a wall or in a rack and procedures for installing the power supply module. It also illustrates optional wall mounting kits available. Before You Install the Chassis Before you begin the installation, you should: • Unpack the box, and check the contents. • Gather the tools that you need to perform the installation.
Checking the Contents Before you begin the installation, unpack the contents of the box and be sure that you have the parts listed in Table 2–1.
Installing the Chassis in a Rack The DEChub 900 MultiSwitch chassis can be installed either in a 19-inch equipment rack or on a wall using the mounting bracket and hanger. Rack mount brackets and mounting hardware, for installing the chassis into a standard RETMA 19-inch equipment rack, are supplied with the DEChub 900 MultiSwitch chassis (see Figure 2–1). You can use the cable ring bracket supplied with your chassis to manage the cabling from the network modules (see Figure 2–2).
Figure 2–1: Attaching Rack Mount Brackets to the Chassis Back view LKG-9008-94I 2–4 DEChub 900 MultiSwitch Owner’s Manual
Figure 2–2: Cable Ring Bracket on a 19-inch Rack AC power cable tie Cable ring bracket LKG-8987-94I Installing the Chassis and Power Supply Module 2–5
Installing the Chassis on a Wall The chassis can be mounted directly on a wall using the wall bracket and hanger mounting device. CAUTION ! The total weight of a fully configured DEChub 900 MultiSwitch chassis with network modules and cables is approximately 80 pounds (36 kg). This configuration is too heavy for an office wall partition. Be sure to install the chassis on a wall that can support the weight.
Figure 2–3: Installing the Wall Mounting Bracket LKG-8266-93I Installing the Chassis and Power Supply Module 2–7
Attaching the Mounting Hanger Perform the following two steps to mount the hanger to the chassis (see Figure 2–4): 1. Attach the wall mounting hanger (1) to the back of the chassis using six #6–32 screws. 2. Attach the rubber feet (2) to the back of the chassis using two #6–32 screws.
Sliding the Chassis onto the Wall Mounting Bracket To mount the chassis, slide the chassis onto the wall mounting bracket (see Figure 2–5).
Installing and Removing a Power Supply Module You can install a power supply module into any power supply slot. Perform the following three steps to install a power supply module (see Figure 2–6): 1. Ensure that the power supply locking mechanism is in the unlock position. 2. Place the mounting tab, which is located on the bottom of the power supply module, in the mounting slot of the chassis. 1 3. Align the power supply connector with the backplane connector and pivot the power supply module into place.
Figure 2–6: Installing the Power Supply Module 2 1 3 LKG-8998-93I Installing the Chassis and Power Supply Module 2–11
If you install any additional power supply modules to the DEChub 900 MultiSwitch once it is operational, you may observe a momentary flicker in the power supply LEDs each time a new power supply module is added. This is part of the normal installation power up sequence when adding additional power supply modules. This task does not cause a dc power interruption to the hub or the network modules. You are now ready to install network modules into the chassis and make the necessary network connections.
Optional Mounting Methods Digital offers optional mounting kits you can use to mount your hub. The following list contains kits you can purchase from Digital. Figure 2–7 shows a DEChub 900 MultiSwitch mounted on a DERMS–AA wall mount rail system, and Figure 2–8 shows a DEChub 900 MultiSwitch DERMS–DA cover.
Figure 2–7: DEChub 900 MultiSwitch mounted on a DERMS–AA DERMS-AA H3108-CS H3108-CW LKG–9087–94I 2–14 DEChub 900 MultiSwitch Owner’s Manual
Figure 2–8: DEChub 900 MultiSwitch DERMS–DA Cover DERMS-AA DERMS-DA LKG-9086-94I Installing the Chassis and Power Supply Module 2–15
3 Hub Manager This chapter describes the features and functionality of the Hub Manager, including the setup port, the out-of-band management port, the Hub Status Display, and selftest procedures. The Hub Manager is a replaceable microprocessor-based controller used to monitor, configure, and control the hub. It provides a central point for status and control for allocation of hub resources to hub-mounted network modules, either under remote management or local control.
• Supports the setup port redirection for network module initialization. • Supports out-of-band management (OBM) for the hub and network modules. • Supports dynamic reconfiguration of network modules and module interconnect for Ethernet, Token Ring, and FDDI across the DEChub 900 MultiSwitch backplane. Hub Manager Ports The Hub Manager provides two external ports: the hub setup port and the hub out-ofband management (OBM) port.
Figure 3–1: Setup Port and OBM Port Cabling OBM port Setup port See OBM port cabling table To setup port device H8571-J H8575-A BN24H cable DEChub 900 MultiSwitch LKG-8988-94I Hub Manager 3–3
Hub Out-of-Band Management (OBM) Port The signals on the hub OBM port (DB-9) conform to standard EIA-574. Standard EIA-574 is based on standard EIA-232D, which uses a 9-pin connector instead of a 25-pin connector. This is the signaling standard used by most personal computers for their serial ports. The port appears as a data terminal equipment (DTE) device. The OBM port supports flow control for Request to Send (RTS) and Clear to Send (CTS) hardware communications.
Hub Status Display The Hub Status Display is a 20-character by 2-line LCD display. The Hub Status Display continually displays new messages. However, if an event occurs, then the Hub Status Display pauses with an event notice message, such as when a module is installed or removed. Table 3–3 lists the Hub Status Display messages, including event notices, and provides a description of each message.
Table 3–3: Hub Status Display Messages (Cont.) Display Message 1: or 1:DECagent 90 Hub Master Description This message displays the status of all the occupied slots in the hub, starting with slot 1. The display shows the slot number, the module’s name, and one of three types of messages: a health string message, module status, or ! Not Enough Power ! message. If ! Not Enough Power ! is displayed, the module is not powered. Some DEChub 90 series module display messages may differ.
Table 3–3: Hub Status Display Messages (Cont.) Display Message Description This message displays either of two messages regarding the hub’s power system status. In the first display message example, the status indicates power is okay, but redundant power (No N+1) is not available. In the second disor play message example, the status indicates Power Status: N+1 redundant power (N+1) is available. In both System Power: 15.0W examples, System Power: 15.0W refers to the power supplied to the hub chassis.
Table 3–3: Hub Status Display Messages (Cont.) Display Message 3–8 Description This message display occurs only by setting MIB objects sysName and/or sysLocation. You can enter up to 80 characters for each of these MIB objects, but only the first 20 characters of each MIB object is displayed in the Hub Status Display. If set, these names are also displayed when you select the Show Current Setting option from the DECHub 900 MultiSwitch Installation Menu.
Self-Test Procedure As each Hub Manager self-test is executed, its test ID is written to the LCD. In the event of a failure, the word ”Failed” appears on the display, and testing stops. For example, if the Diagnostic Code CRC fails, then the following error message appears on the LCD display: DEChub 900 V1.1.6 0102 : Failed The self-test procedure completes in about 15 seconds.
Using the Hub Setup Port The hub setup port allows you to set parameters when the hub is initially installed. Once the hub is configured, you can perform routine network management tasks over the network and the setup port is no longer needed. The hub setup port supports three modes: • Installation Menu • Redirect • Event Display These modes assume only ANSI/ASCII or PC-based terminal interface. Cursor control, screen management escape sequences, or flow control are not supported.
Hub Setup Port Menu When the hub setup port is in default mode, the Hub Installation menu appears: NOTE The Installation Menu screen displays illustrated in this manual may vary slightly from the actual screen displays on your setup port device.
Hub Setup Port Menu Options [1] Reset with Factory Defaults Reset with factory defaults option boots the DEChub 900 MultiSwitch Hub Manager, initiating self-tests causing its configured NVRAM parameters to be initialized to factory default values. All local nonvolatile settings except the Hub Serial Number, will be lost. CAUTION ! This action deletes all configuration settings and replaces them with factory default values. All configuration settings will be lost.
[2] Reset with Current Settings Reset with current settings option boots the DEChub 900 MultiSwitch Hub Manager, but leaves the hub’s configured NVRAM parameters at their current values. The following is an example of the dialog associated with this option (user response is shown in boldface type): Enter selection : 2 DEChub 900 MultiSwitch RESET WITH CURRENT SETTINGS This selection will reset your system with the current configuration settings.
[3] Show Current Settings Show current settings option shows you the current settings of the Hub Manager. If the DEChub 900 MultiSwitch is being configured for the first time, some fields will be blank. HUBwatch or SNMP can be used to set or modify these values. The following is an example of the dialog associated with this option (user response is shown in boldface type): Enter selection : 3 DEChub 900 MultiSwitch DEChub900MultiSwitch,DEChub 900 MultiSwitch,HW=F,RO=V1.1.6,SW=V3.0.
[4] Set SNMP Read/Write Community Set SNMP read/write community option prompts you to enter the community name. The community name consists of 4 to 31 printable ASCII characters that describe the relationship between the SNMP agent and one or more SNMP managers. This defines the authentication mechanism employed to validate use of the community by the sending SNMP entity. The factory default of this menu option sets the read/write community name to public.
[5] Add SNMP Trap Addresses Add SNMP trap addresses option prompts you to enter IP addresses to which SNMP traps will be sent from the DEChub 900 MultiSwitch. The format for an SNMP trap address is the standard 4-octet dotted decimal notation, where each octet of the address is represented as a decimal value, separated by a decimal point (.). The factory default of this menu option deletes all SNMP trap addresses.
[6] Delete SNMP Trap Addresses Delete SNMP trap addresses option prompts you to select SNMP trap addresses and delete it from the community trap address table. The format for an SNMP trap address is the standard 4-octet dotted decimal notation, where each octet of the address is represented as a decimal value, separated by a decimal point (.).
[7] Dump Error Log Dump error log option displays error log dumps for use by Digital support personnel when analyzing system faults. Up to six error log messages can be stored and the most recent message is displayed first.
[8] Set In-Band Interface IP Address Set in-band interface IP address option prompts you for an IP address in the standard 4–octet dotted decimal notation, in which each octet of the address is represented as a decimal value, separated by a decimal point (.). If an IP address was previously configured, an in-band IP address will be displayed. To remove an IP address, enter Y when this option prompts you to delete your current configuration.
[9] Downline Upgrade Downline upgrade option allows you to upgrade the Hub Manager firmware and network module firmware (in nonvolatile Flash memory). It prompts you to enter the IP address of your TFTP (Trivial File Transfer Protocol) load host and the image file name. The following is an example of an image file name and an IP address: mam_dh900.bin and 16.20.54.155 The format of the image file name is specified according to the conventions used by your TFTP load server.
[9] Downline Upgrade (Cont.) Enter selection : 9 DEChub 900 MultiSwitch DOWNLINE UPGRADE This process upgrades the specified device’s firmware (in nonvolatile Flash memory). Enter the IP address of your TFTP (Trivial File Transfer Protocol) load host and the image file name when prompted.
[9] Downline Upgrade (Cont.) The following events occur after you: (1) select the option, (2) enter the slot number to be upgraded, enter the load file name, and enter the load host IP address, and (3) press Return when prompted. Below is an example of the setup port screen display dialog using a network module with IP services in Hub slot 8. When both in-band and out-of-band IP addresses are assigned, two network interfaces are available to choose from.
[9] Downline Upgrade (Cont.) Select the desired network interface, then press Return. The setup screen displays the following message: The device becomes nonfunctional for up to 10 minutes during the time that the flash load is in progress. ... Press Return Key to Start Load ... Pressing Return initiates the load over the selected network interface. After you initiate the process, the setup port screen displays the following message followed by a series of dots (. . . . . . . .
[9] Downline Upgrade (Cont.) When the TFTP load transfer is complete, the Hub Manager verifies the TFTP image. During this time, the Hub Status Display displays the following message: SW Loaded, Checking Image . . . After the Hub Manager verifies the image, it writes it into flash memory. During this time, the Hub Status Display displays the following message: Image OK, Writing Image . . . After the Hub Manager stores the image into flash memory, it boots the new image.
[9] Downline Upgrade (Cont.) The following setup port screen is an example of the dialog you see when you upgrade the Hub Manager using a network module with IP services in Hub slot 8. Return Enter the slot to be upgraded [9] (Hub Manager) : Enter the load filename [ ] : filename.ext Return Enter the Load Host IP address [ ] : 16.20.40.155 Return Load will be initiated over Hub Slot 8 network interface.
[10] Set Out-of-Band Interface IP Address Set out-of-band interface IP address option prompts you for an IP address in the standard 4–octet dotted decimal notation, in which each octet of the address is represented as a decimal value, separated by a decimal point (.). If an IP address was previously configured, an out-of-band IP address will be displayed. To remove an OBM IP address, enter 0.0.0.0 in the appropriate address field.
[11] Set Out-of-Band Interface Port Speed Set out-of-band interface port speed option prompts you to select and enter the speed of your out-of-band management (OBM) port. NOTE The port speed at each end of the communications link must be identical. The factory default of this menu option sets the out-of-band port speed to 9600.
[12] Start Event Display Mode Start event display mode allows you to display events as they occur in the DEChub 900 MultiSwitch and displayed by the Hub Manager. The following is an example of the dialog associated with this option (user response is shown in boldface type): Enter selection : 12 Press any key to start event log [CTRL/C to abort] ...
[13] Start Redirect Mode Start redirect mode allows you to redirect the setup port input and output to the setup port of a network module that is installed in the hub. This mode lets you configure or obtain status of the network module in the slot number that you select.
4 Network Management This chapter describes how to manage the DEChub 900 MultiSwitch and the network modules installed in your DEChub 900 MultiSwitch by using in-band management and Out-of-Band (OBM) management. Managing Network Modules In-Band You can manage both 900-series and 90-series modules in-band with the DEChub 900 MultiSwitch.
Using the In-Band IP Address of the Hub Manager The Hub Manager does not have an in-band connection for communicating over all network types to a network management system. Instead, you use a network module that supports IP services as the primary path for in-band management.
The DECagent 90 proxy agent is still required for some 90-series devices that do not support the SNMP protocol, for example, the DECbridge 90, the DECbridge 90FL, the DECserver 90L, and the DECserver 90L+. All DECrepeater 90 products; however, can be managed by the Hub Manager using the IETF repeater MIB. The DECagent 90 does not have to be installed into the same hub it manages, it can be located anywhere on the same extended LAN and manage 90-series devices.
The OBM port allows you to manage network modules with a computer and a network management application capable of sending SNMP commands over a Serial Line Internet Protocol (SLIP) using a modem, or a direct connection to the OBM port. If your network management application supports Ping echo, you can use it to verify the SLIP connection.
5 Hub Power System The following sections describe the hub power system’s functionality. It also describes installing and removing power supply modules, and guidelines for calculating power needs. Redundant Power In certain configurations, the hub may need one, two or three power supply modules to provide power to all the network modules. The addition of an extra power supply module allows for the failure of any one of these power supply modules.
Guidelines for Calculating Power Needs The DEChub 900 MultiSwitch power supply module is an output load sharing type power supply rated at 140 watts. Note that the sum of the combined 5-volt and 15-volt power outputs exceeds the 140-watt power rating. This power difference gives the 140-watt power supply the flexibility of supplying the desired 5-volt and 15-volt power demands to variety of hub configurations. Table 5–1 lists the power consumption of each component of the DEChub 900 MultiSwitch.
In the example below, a DEChub 900 MultiSwitch is configured with two 32-port repeaters, one fiber-optic repeater, two DEChub 90-type modules, and one multiport bridge. With this configuration, you need three power supply modules for an N+1 power system, or only two power supply modules if you do not require N+1. Table 5–2: Power Example Component +5 V +15 V Total Power Chassis 3.0 A 0.0 A 15.0 watts DECbridge 900MX 9.0 A 1.5 A 67.5 watts DECrepeater 900TM 4.0 A 0.5A 27.
Power System Monitoring The DEChub 900 MultiSwitch hub power system is monitored by the Hub Manager. When changes are detected in the hub power system, the Hub Manager updates the amount of power available to the network modules. An increase in available power can result in the powering up of previously unpowered network modules. A decrease in available power may result in powering down full-height network modules to keep the power system within its operating limits.
Newly installed half-height network modules receive power immediately. If there is not sufficient available power for a newly installed half-height network module, then a full-height module that is currently powered in the lowest slot number will be disabled so power can be supplied to the newly inserted half-height module. Newly installed full-height network modules receive power only after the Hub Manager determines how much power is needed and that there is sufficient available power.
You can determine if the hub has enough power for a new module by: • Reading the power requirements label on the module or module documentation. • Reading the Hub Status Display to determine that the required power is available. • Comparing the module’s 5-volt, 15-volt, and Total Power (Watts) values with the Hub Status Display Available power values and ensuring all three power values are met. Power supply modules may be added to provide power as needed for any configuration.
6 Problem Solving This chapter provides problem solving information for the DEChub 900 MultiSwitch hub and its power system. Use Table 6–1 as a guide to determine the probable cause and the suggested solution to problems that you may encounter. Table 6–1: Problem Solving the DEChub 900 MultiSwitch Symptom Probable Cause The two LEDs on the power supply module are off. The hub is not receiving Check the ac power connection and proper power. verify that the ac outlet is working.
Table 6–1: Problem Solving the DEChub 900 MultiSwitch (Cont.) Symptom Probable Cause Corrective Action The Hub Manager fails the self-test. The self-test diagnostics have uncovered a hardware failure. Power cycle the hub to see if the diagnostic failure clears. The Hub Manager or the backplane is faulty. Contact your Digital service representative to correct the problem. There is no response on the hub setup port. The terminal device is connected incorrectly.
A Order Numbers and Specifications This appendix lists the country-specific DEChub 900 MultiSwitch order numbers and related parts. It also lists hub specifications. Country-Specific Order Numbers Table A–1 lists the country-specific DEChub 900 MultiSwitch order numbers.
Related Parts Table A–2 lists the related parts for the DEChub 900 MultiSwitch hub. Table A–2: Related Parts Part Order Number Hub setup port connection to MMJ devices (VT420, DECserver 90L+) BN24H–xx1 Hub setup port connection to MJ8 devices (DECserver 90TL) BN24F–xx1 Hub OBM to MMJ adapter H8571–J Power supply H7890–MA 1 The xx represents the length in meters. Specifications This section describes the mechanical, electrical, and acoustic specifications for the DEChub 900 MultiSwitch hub.
Table A–4: Component Weight Specifications Component Weight Chassis with rack/wall mounting brackets 12.1 kg (27 lb) Power supply 2.25 kg (5 lb) Half-height network module 0.68 kg (1.5 lb) typical Full-height network module 1.8 kg (4.0 lb) typical Table A–5: Rack Mount Option Dimension Specifications Specification Mounting Area Height 057.8 cm (22.75 in) Width 45.0 cm (17.71 in) Depth 31.8 cm (12.
Table A–7: Wall Mount Option Specifications Part Specification Value Mounting Area Height 57.8 cm (22.75 in) Width 44.5 cm (17.5 in) Top 7.7 cm (3 in) Bottom 7.7 cm (3 in) Sides 2.54 cm (1 in) Depth from wall 31.8 cm (12.5 in) Required Clearances Electrical Specifications Table A–8 provides the electrical specifications for the DEChub 900 MultiSwitch hub.
Acoustic Specifications Table A–10 and Table A–11 lists the preliminary declared acoustic values per ISO 9296 and ISO 7779, for the DEChub 900 MultiSwitch hub. Table A–10: Acoustical Specifications – English Acoustics: Declared values per ISO 9296 and ISO 77791 Idle/Operate Product Sound Power Level Sound Pressure Level LWAd, B LpAm, dBA DMHUB–MB + H7890–MA 5.2 38 DMHUB–MB + 2 x H7890–MA 5.5 41 DMHUB–MB + 3 x H7890–MA 6.2 48 DMHUB–MB + 4 x H7890–MA 6.
Table A–11: Acoustical Specifications – German Schallemissionswerte: Werteangaben nach ISO 9296 und ISO 7779/DIN EN277791 Leerlauf/Betrieb Produkt Schalleistungspegel LWAd, B Schalldruckpegel LpAm, dBA DMHUB–MB + H7890–MA 5.2 38 DMHUB–MB + 2 x H7890–MA 5.5 41 DMHUB–MB + 3 x H7890–MA 6.2 48 DMHUB–MB + 4 x H7890–MA 6.
B Connector, Cable and Adapter Pin Assignments This appendix lists the connector, adapter, and cable pin assignments for the DEChub 900 MultiSwitch. Figure B–1 illustrates the Hub Manager setup port connector pin and signal assignment. Figure B–2 illustrates the Hub Manager OBM port connector pin and signal assignment. Figure B–3 through Figure B–5 illustrate the cable pin assignments for the cables associated with the setup port and the OBM port.
Figure B–2: OBM Port (DB-9) Connector Pin Assignments Pin Assignment 1 2 3 4 5 6 7 8 9 Data Carrier Detect (DCD) Receive Data (RXD) Transmit Data (TXD) Data Terminal Ready (DTR) Ground Data Set Ready (DSR) Request to Send (RTS) Clear to Send (CTS) No connect 1 5 6 9 DB9 9-pin connector LKG-8996-93I Figure B–3: BC29P Cable Pin Assignments DB-9 1 2 3 4 5 6 7 8 9 DB-25 8 3 2 20 7 6 4 5 Data Carrier Detect (DCD) Receive Data (RXD) Transmit Data (TXD) Data Terminal Ready (DTR) Ground Data Set Ready
Figure B–4: BC29Q Cable Pin Assignments DB-9 DB-9 1 2 3 4 5 6 7 8 9 Data Carrier Detect (DCD) Receive Data (RXD) Transmit Data (TXD) Data Terminal Ready (DTR) Ground Data Set Ready (DSR) Request to Send (RTS) Clear to Send (CTS) No connect 4 3 2 1 5 6 8 7 9 LKG-8990-94I Figure B–5: BN24H Cable Pin Assignments 8 MP WH/GR GR/WH WH/OR OR/WH WH/BR BR/WH 1 2 3 4 5 6 7 8 6 MMP 1 2 3 4 5 6 LKG-4716-91I Connector, Cable and Adapter Pin Outs B–3
Figure B–6: H8571-J Adapter Pin Assignments 9 D–Sub(F) 6 MMJ 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 DCD SD RD DTR GND DSR RTS CTS RI LKG-5342-91I Figure B–7: H8575-A Adapter Pin Assignments 25 D–Sub(F) 1 2 3 4 5 6 7 8 20 6 MMJ DTR TX+ TX– RX– RX+ DSR 1 2 3 4 5 6 H8575-A * Note: EOS/ESD protection devices are not shown on diagram LKG–8793–93I B–4 DEChub 900 MultiSwitch Owner’s Manual
C Accessing MIBs and RFCs This appendix describes how to access Digital’s private Management Information Base (MIB) and Request For Comments (RFCs). Public MIBs can be accessed over the Internet network using any of the following methods: • Electronic mail • ftpmail • Anonymous ftp • Diskette (for some Digital products) You can use these methods to access up-to-date MIBs, as described in the following sections.
2. In the SUBJECT field, request the type of service that you want, followed by any needed arguments. Normally the message body is ignored, but if the SUBJECT field is empty, the first line of the message body is taken as the request. The example at the end of this section lists some of the services available. Requests are processed automatically once a day. Large files are broken down into separate messages. However, a few files are too large to be mailed.
Requests are acknowledged, then queued and processed every 30 minutes. Because of the number of requests, it may take a day or two before you receive a reply. NOTE For more timely access, consider using anonymous ftp (refer to the next section). The following are example SUBJECT lines to obtain DDN NIC documents: HELP RFC 822 RFC INDEX RFC 1119.PS FYI 1 IETF 1IETF–DESCRIPTION.TXT INTERNET–DRAFTS 1ID–ABSTRACTS.TXT NETINFO DOMAIN–TEMPLATE.TXT SEND RFC: RFC–BY–AUTHOR.TXT SEND IETF/1WG–SUMMARY.
Using Anonymous ftp You can obtain RFCs and up-to-date FDDI MIBs from Digital using anonymous ftp. Digital offers Internet anonymous ftp access to private MIB information, in ASCII text form, at ftp.digital.com, with up-to-date documents stored in the directory /pub/DEC/hub900/mibs. Check the INDEX file and the README file for the current contents. To use anonymous ftp to copy files, follow these instructions: NOTE User input is case sensitive; you must type it as shown. 1.
The following example shows how to copy the README file from the repository: NOTE In the following example, user input is shown in bold text. % ftp ftp.digital.com Connected to ftp.digital.com 220 FTP.DIGITAL.COM FTP Service Process Name: anonymous 331 ANONYMOUS user ok, send real ident as password. Password: milano@netman.stateu.edu 230 User ANONYMOUS 10:24-EST, job 54. logged in at Tue 10-Aug-1993 ftp> cd /pub/DEC/hub900/mibs. 331 Default name accepted. Send password to connect to it.
DEChub 900 MultiSwitch Supported MIBs The DEChub 900 MultiSwitch supports the following MIBs: • MIB II, RFC 1213 • DEChub 900 Chassis MIB • DEChub 900 Hub Manager MIB • DEChub Common MIB Obtaining Firmware Upgrades As Digital continuously improves the quality of DEChub products, periodic releases of firmware will become available. To ensure that you have the latest functionality and quality of firmware, always use the most current version of firmware.
Index A ac connector, 1–7 Adapter pin assignments, B–1 H8571–J, B–4 H8575–A, B–4 Add SNMP trap addresses, 3–16 B Backplane connector, 1–7 C Cable pin assignments, B–1 BC29P, B–2 BC29Q, B–3 BN24H, B–3 Cable ring bracket, installing, 2–3 Cabling OBM port, 3–4 setup port, 3–2 Chassis, 1–4 contents, 2–2 illustration, 1–6 installing, 2–1 installing in a rack, 2–3 installing on a wall, 2–6 Connector pin assignments, B–1 OBM port, B–2 setup port, B–1 D DEChub 900 MultiSwitch country-specific order numbers, A–
H Hot swap network module, 1–4 power supply, 1–9 Hub Manager functions, 3–1 overview, 3–1 power supply polling, 1–8 self test, 3–9 Hub Manager ports, 3–2 OBM port, 3–4 setup port, 3–2 Hub setup port menu, 3–11 Hub Status Display, 3–5 event notices, 3–5 messages, 3–5 power messages, 4 MultiSwitch connector, 1–7 N N+1 power. See Power system Network management, 4–1 managing in band, 4–1 managing out-of-band, 4–3 Network Module, hot swap.
power allocation, 4 power example, 3 redundant power, 1–8, 1 resetting, 2–12 R Rack mount brackets, installing, 2–3 Related documentation, xvi Release lever, 1–7 Reset with current settings, 3–13 Reset with factory defaults, 3–12 S Safety messages, xi Set in-band interface IP address, 3–19 Set out-of-band interface IP address, 3–22 Set out-of-band interface port speed, 3–23 Set SNMP read/write community, 3–15 Setup port See also Hub Manager ports adapter types, 3–2 cabling, 3–2 cabling illustration, 3–3 c
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