DECrepeater 90FL ------------------------------------------------------------ Owner 's Manual Order Number: EK-DEFMR-OM. A01 Revision/Update Information: This is a new manual. Digital Equipment Corporation Maynard, Massachusetts ------------------------------------------------------------ First Edition, September 1992 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. The software described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. No responsibility is assumed for the use or reliability of software on equipment that is not supplied by Digital Equipment Corporation or its affiliated companies. Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013. © Digital Equipment Corporation 1992. All Rights Reserved. Printed in U.S.A. FCC NOTICE: The equipment described in this manual generates, uses, and may emit radio frequency energy. The equipment has been type tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such radio frequency interference when operated in a commercial environment. Operation of this equipment in a residential area may cause interference, in which case the user at his own expense may be required to take measures to correct the interference. The following are trademarks of Digital Equipment Corporation: BI, DEC, DECbridge, DECconnect, DECmcc, DECnet, DECserver, Digital, LAT, MicroVAX, ThinWire, ULTRIX, UNIBUS, VAX, VAX-11/780, VAX-11/785, VAX 3600, VAX 3900, VAX 6000, VAX 6300, VAX 6400, VAX 9000, VAXcluster, VAX DOCUMENT, VAXELN, VAXstation, VMS, VT, and the DIGITAL logo. ST is a registered trademark of American Telephone & Telegraph Company. This document was prepared using VAX DOCUMENT, Version 2.0. ------------------------------------------------------------ Contents About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii 1 Overview Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 LEDs and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Configuring the DECrepeater 90FL Configuration Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Segment Length Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Network Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Installed Fiber Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 3 Installation Site Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Standalone Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Mount the DECrepeater 90FL on a Wall . . . . . . . . . . . . . . . . . 3-2 Standalone Installation Connections . . . . . . . . . . . . . . . . . . . . 3-4 Backplane Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 4 Managing the DECrepeater 90FL Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Components Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Accessing MOP from VMS Systems . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Accessing a Bridge Repeatedly . . . . . . . . . . . . . . . . . . . . . . . . . 4-3 Accessing MOP from ULTRIX Systems . . . . . . . . . . . . . . . . . . . . . 4-3 Console Carrier User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 Console Carrier Command Language . . . . . . . . . . . . . . . . . . . . . . . 4-4 Description of Command Parameters . . . . . . . . . . . . . . . . . . . . 4-6 Description of Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7 iii Typical Management Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14 Remote Network Management with the DECbridge 90 . . . . . . 4-14 Management Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14 Management Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15 Example of a Typical Management Session . . . . . . . . . . . . 4-15 If Problems are Reported . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16 To Disable a Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 To Reset the Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18 Standalone Configuration Management . . . . . . . . . . . . . . . . . . . . . 4-20 5 Troubleshooting Port Partitioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 DECrepeater 90FL Standalone Troubleshooting . . . . . . . . . . . . . . 5-3 DECrepeater 90FL Backplane Troubleshooting . . . . . . . . . . . . . . . 5-6 A Specifications and Parts List Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 B Management Details Designating a Hub Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 Annotating the Bridge Address Table . . . . . . . . . . . . . . . . . . . . . . B-2 Using the WGB Address Table for Work Group Management . . . . B-3 C Related Documentation Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 Continental USA and Puerto Rico . . . . . . . . . . . . . . . . . . . . . . C-1 New Hampshire, Alaska, and Hawaii . . . . . . . . . . . . . . . . . . . C-1 Outside the USA and Puerto Rico . . . . . . . . . . . . . . . . . . . . . . C-1 Digital Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2 Index iv Figures 1-1 DECrepeater 90FL LEDs and Connectors . . . . . . . . . . 1-3 2-1 DECrepeater 90FL Repeater Path . . . . . . . . . . . . . . . . 2-2 2-2 DECrepeater 90FL Typical Transmission Path . . . . . . 2-3 2-3 DECrepeater 90FL Typical DEChub 90 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 3-1 Removing the Back Cover . . . . . . . . . . . . . . . . . . . . . . 3-2 3-2 Mounting Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 3-3 Standalone Installation . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3-4 Installing the DECrepeater 90FL into the DEChub 90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7 4-1 Sample Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 4-13 4-2 Typical Network Topology Map . . . . . . . . . . . . . . . . . . 4-15 Tables 1-1 DECrepeater 90FL LEDs and Connectors . . . . . . . . . . 1-2 2-1 Segment Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 4-1 Ethernet Circuit Names for Systems . . . . . . . . . . . . . . 4-2 4-2 Summary of DECbridge 90FL Commands . . . . . . . . . . 4-5 4-3 DECbridge 90 Messages . . . . . . . . . . . . . . . . . . . . . . . . 4-18 5-1 DECrepeater 90FL Status Indicators . . . . . . . . . . . . . . 5-2 5-2 DECrepeater 90FL Fiber-Link Status Indicators . . . . . 5-2 5-3 Troubleshooting a DECrepeater 90FL Standalone Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 5-4 Troubleshooting a DECrepeater 90FL in a DEChub 90 Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 A-1 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 A-2 Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . A-2 A-3 Shipping Environment . . . . . . . . . . . . . . . . . . . . . . . . . A-2 A-4 Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 A-5 DECrepeater 90FL Input . . . . . . . . . . . . . . . . . . . . . . . A-3 A-6 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 v ------------------------------------------------------------ About This Manual This manual describes how to install, operate, and maintain the DECrepeater 90FL repeater. The DECrepeater 90FL is a five-port repeater designed to function as a standalone unit or as a managed unit in the DEChub 90 backplane. In this manual, the DECrepeater 90FL repeater may be referred to as the DECrepeater 90FL or the repeater. Organization This manual contains five chapters and three appendices. ------------------------------------------------------------ Chapter Description ------------------------------------------------------------ 1 Provides an overview of the DECrepeater 90FL and briefly describes the product's features. 2 Describes the configuration rules and conditions of operation for the DECrepeater 90FL in a ThinWire Ethernet system or fiber-optic network. 3 Describes how to install the DECrepeater 90FL. 4 Describes how to manage the DECrepeater 90FL. 5 Provides basic troubleshooting information. Appendix A Provides the physical dimensions, environmental (operating and shipping) specifications, electrical specifications, and a parts list. Appendix B Provides more detailed information about management issues. Appendix C Provides a list of related documentation and ordering information. ------------------------------------------------------------ vii Conventions The following conventions are used in this manual: ------------------------------------------------------------ Convention Meaning ------------------------------------------------------------ Note Provides general information. boldface type Boldface type in examples indicates user input. For example: DECbridge> SHOW REPEATER ! A number in a black circle in text refers to the corresponding number in an accompanying figure. [ ] In command descriptions, brackets indicate optional elements. variables In command descriptions, italic type indicates a variable that you supply. SHOW ADDRESS In text, commands are shown in all uppercase letters to differentiate them from regular text. For VMS operating systems, you can enter commands in either uppercase or lowercase letters. For ULTRIX operating systems, commands must be entered as indicated in the examples. DECbridge> Text that the system displays on the screen is shown in monospaced type. SHOW REPEATER 1 Text that you enter is shown in bold monospaced type. ------------------------------------------------------------ viii 1 ------------------------------------------------------------ Overview This chapter describes the DECrepeater 90FL repeater and summarizes the features for this repeater. The DECrepeater 90FL is a five-port repeater designed for IEEE 802.3 standard CSMA/CD networks. The DECrepeater 90FL has one ThinWire port and four fiber-optic ports. The ThinWire port complies with the IEEE 802.3 standard for 10Base2 networks. The fiber-optic ports comply with the IEEE 802.3 standard for 10Base-FL networks. The 10Base-FL standard allows backward compatibility of the DECrepeater 90FL to the Fiber Optic Inter Repeater Link (FOIRL) compliant products. The DECrepeater 90FL can operate in a standalone configuration or as a managed repeater when installed in a DEChub 90 backplane with a DECbridge 90 series bridge. When operating as a standalone unit, the DECrepeater 90FL is an unmanaged repeater with a separate power supply connected to the repeater by a cable with a 7-pin connector. The auto-ranging power supply is modular and accommodates either a North American 120-volt or an international 240-volt wall outlet. Features The following list summarizes the main features of the DECrepeater 90FL: · Four fiber-optic link (10Base-FL) ports · One ThinWire (10Base2) port · Standalone or installable in a DEChub 90 backplane · Manageable when installed in a DEChub 90 backplane For detailed information about how to configure the DECrepeater 90FL, see Chapter 2, Configuring the DECrepeater 90FL. For detailed information about how to install and use the DECrepeater 90FL, see Chapter 3, Installation. Overview 1-1 LEDs and Connectors The front panel of the DECrepeater 90FL contains several indicator lights (LEDs) and connectors. These LEDs and connectors are described in Table 1-1 and are shown in Figure 1-1. Table 1-1 DECrepeater 90FL LEDs and Connectors ------------------------------------------------------------ ! DC OK monitors the voltage. On: The +5.0 Vdc voltage is normal. Off: The voltage is abnormal (as when a power failure occurs). " Network activity indicator monitors the network activity. On: There is network activity. Off: There is no network activity. # Port 0 status indicator monitors the status of port 0. On: Port 0 is functional. Off: Port 0 is not functioning or has been partitioned. Flashing: Port 0 has been partitioned by management. $ Status indicators monitor the status of ports 1, 2, 3, and 4. See Table 5-1 in Chapter 5, Troubleshooting for further information. On: The port is operational. Off: The port is not functioning or has been partitioned. Flashing: The port has been partitioned by management. % Fiber-link status indicators monitor the optical link status of ports 1, 2, 3, and 4. See Table 5-2 in Chapter 5, Troubleshooting for further information. On: The link is operational. Off: The link is not functioning. & Fiber-optic transmit connector connects to the receive port of the other fiber-optic device. ' Fiber-optic receive connector connects to the transmit port of the other fiber-optic device. ( Port 0 network connector (BNC) connects the repeater to the work group ThinWire segment. Not used when the repeater is installed in the DEChub 90 backplane. ) Backplane connector provides network and power connections to the DECrepeater 90FL when it is installed in the DEChub 90 backplane. +> Power connector receives +5.0 V from the DECrepeater 90FL power supply. Not used when the repeater is installed in the DEChub 90 backplane. +? Back cover covers the backplane connector and mounting assembly. Used with standalone units only. ------------------------------------------------------------ 1-2 Overview Figure 1-1 DECrepeater 90FL LEDs and Connectors Overview 1-3 2 ------------------------------------------------------------ Configuring the DECrepeater 90FL This chapter contains some of the basic configuration rules and guidelines that must be followed to correctly install the typical DECrepeater 90FL configurations. For more detailed information about installing IEEE 802.3 compliant multisegment local area networks (LANs), refer to Section 13 of the IEEE 802.3i-1990 standard. Configuration Rules The two basic constraints in IEEE 802.3 LAN configurations are segment lengths and the number of repeaters between data terminal equipment (DTE). To ensure the proper operation of the physical layer and access methodology, the network size must meet the round trip propagation delay budget. Segment Length Constraints Table 2-1 specifies the maximum segment lengths for the four possible types of media. Table 2-1 Segment Lengths ------------------------------------------------------------ Media Type Maximum Segment Length (Meters) ------------------------------------------------------------ Mixing (coaxial) 10Base2 (ThinWire) 185 Link 10BaseT (twisted-pair) 100 FOIRL 1000 10Base-FL 2000 ------------------------------------------------------------ Network Constraints The overall network is constrained by the following IEEE 802.3 rules: 1. The transmission path between any two DTEs may consist of up to five segments and four repeater sets (Figure 2-1). When a network consists of five segments and four repeater sets, a maximum of three of these segments may be mixing (coaxial) segments. Configuring the DECrepeater 90FL 2-1 2. The total of all segments (up to five) shall not exceed 2500 meters. Figure 2-1 shows an example of the maximum number of repeaters on a path using coaxial segments and 10Base-FL segments. Figure 2-1 DECrepeater 90FL Repeater Path 2-2 Configuring the DECrepeater 90FL Figure 2-2 shows an example of a typical transmission path with three repeater sets and four link segments. Figure 2-2 DECrepeater 90FL Typical Transmission Path Configuring the DECrepeater 90FL 2-3 Figure 2-3 shows a DEChub 90 extended LAN configuration. Figure 2-3 DECrepeater 90FL Typical DEChub 90 Configuration 2-4 Configuring the DECrepeater 90FL In this configuration, the requirements of the network extend beyond the five segments and four repeaters allowed by the IEEE 802.3 rules. This configuration is supported by using bridges to create an extended LAN. The two LANs on either side of the bridge may each contain up to five segments and four repeaters; however, they are able to communicate with one another as if they were on a single LAN. Installed Fiber Constraints In addition to following the IEEE 802.3 rules that ensure proper protocol operation, the user must also ensure that the fiber-optic cable plant is properly designed. Although the IEEE 802.3 standard allows for a maximum length of 1000 meters (FOIRL) or 2000 meters (10Base-FL), the fiber-optic segments may be limited by the following installed fiber characteristics: · Power budget · Link-loss · Wavelength · Bandwidth The maximum link distance could be further restricted by the number of splices, interconnects, and cross-connect administration points. Refer to the DECconnect System Fiber Optic Planning and Configuration guide for instructions on how to calculate the link certification value for each segment. Configuring the DECrepeater 90FL 2-5 3 ------------------------------------------------------------ Installation Before you install the DECrepeater 90FL repeater, it is recommended that you read this entire manual to become familiar with the features and configuration rules of the DECrepeater 90FL. If problems occur during installation, refer to Chapter 5, Troubleshooting. For additional information that may be useful during installation, refer to Appendix A, Specifications and Parts List. The DECrepeater 90FL may be installed on a desk top or table, mounted on a wall by its back cover, or installed in a DEChub 90 backplane. The only tool required for installation is a screwdriver. The screwdriver is used to remove the back cover, which covers the backplane connector and mounting assembly, and to mount the repeater or the power supply on the wall. Site Considerations The DECrepeater 90FL and its power supply can be placed in various locations, including office areas, computer rooms, or wiring closets, as long as the environmental requirements are met. These requirements are provided in Table A-2, Operating Environment in Appendix A. Standalone Installation To install the DECrepeater 90FL on a desk top or table, make sure that the air circulation around the DECrepeater 90FL does not become obstructed by papers or other materials. Refer to the environmental specifications provided in Table A-2 in Appendix A. Installation 3-1 Mount the DECrepeater 90FL on a Wall To install the DECrepeater 90FL as a standalone wall-mount unit, perform the following procedure: 1. Remove the cover (if necessary). a. Insert a small screwdriver into the top mounting hole on the cover (Figure 3-1). b. Lift the internal latch with the screwdriver, then pull the cover away and down from the top of the unit. Figure 3-1 Removing the Back Cover 3-2 Installation 2. Use the mounting holes on the back cover to determine the placement for the mounting screws on the wall. 3. Secure the back cover to the wall using the mounting screws (Figure 3-2). Figure 3-2 Mounting Screws Installation 3-3 The screws should be tight enough to provide resistance if you try to remove the back cover from the wall. However, do not make the screws so tight that the cover is distorted or cannot be removed from the wall. 4. Remove the back cover from the wall. 5. Attach the back cover to the repeater. 6. Mount the repeater onto the mounting screws. Standalone Installation Connections To make the DECrepeater 90FL standalone installation connections, perform the following procedure and refer to Figure 3-3. 1. Connect the cable from the power supply to the 7-pin power connector on the DECrepeater 90FL. Align the power symbol on the dc power connector with the power symbol on the DECrepeater 90FL and push straight in. 2. Connect the DECrepeater 90FL to the power source. For a 240 V power outlet, connect the power supply cord to the modular power supply, then to the wall outlet. For a 120 V power outlet, connect the power supply directly to the wall outlet. 3. If desired, connect the Ethernet ThinWire segment to a T-connector; connect the T-connector to the port 0 BNC network connector. Terminate the T-connector using a 50-ohm terminator or extend the Ethernet segment to the next device. The port 0 status activity LED should be on or flashing to indicate the amount of traffic on the network. The LED intensity varies with the amount of traffic: the more traffic, the brighter the LED will appear. 4. Connect the fiber-optic cables to ports 1 through 4 using 2.5-millimeter ST type bayonet connectors. The DECrepeater 90FL is now installed. 3-4 Installation Figure 3-3 Standalone Installation Installation 3-5 Backplane Installation To install the DECrepeater 90FL in the DEChub 90 backplane, perform the following procedure: 1. Remove the back cover (if necessary). a. Insert a small screwdriver into the top mounting hole located on the cover. b. Lift the internal latch with the screwdriver and pull the cover away and down from the top of the unit (Figure 3-1). 2. Place the lower mounting tab, located on the back of the DECrepeater 90FL, into the correct mounting slot on the backplane (Figure 3-4). 3. Rock the repeater into place. You will hear a click when the repeater is secured in the slot. 4. Supply power to the backplane if this is a new installation. 5. Attach the fiber-optic cables to ports 1 through 4 as required. The DECrepeater 90FL is now installed. ------------------------------------------------------------ Note ------------------------------------------------------------ The DECrepeater 90FL can be installed into or removed from the DEChub 90 backplane while power is supplied to the backplane (hot swap). ------------------------------------------------------------ 3-6 Installation Figure 3-4 Installing the DECrepeater 90FL into the DEChub 90 Installation 3-7 4 ------------------------------------------------------------ Managing the DECrepeater 90FL This chapter provides information about managing the DECrepeater 90FL repeater on a network using the Maintenance Operations Protocol (MOP) for VMS or ULTRIX operating systems. This chapter also describes the management functions, commands, techniques, and messages. The DECrepeater 90FL is managed online using a DECbridge 90 series unit in a DEChub 90 backplane. All commands that affect the DECrepeater 90FL are part of the DECbridge 90 series command set. Functions Online management allows the user to perform the following functions: · Identify all repeaters in the DEChub 90. · Examine port status (enabled, disabled, properly operating, or inoperative) of repeater ports that share the DEChub 90 backplane with a bridge. · Examine the work group address database entries 1 to 200, annotated with the repeater port to which each is attached, if any. · Reset any repeater in the DEChub 90 backplane. · Enable or disable a repeater port. · Define the bridge password. See the Description of Commands section of this chapter for additional information about command syntax. Components Needed The following components are needed to manage a DECrepeater 90FL online: · DEChub 90 backplane · DECbridge 90 series work group bridge · DECrepeater 90FL Managing the DECrepeater 90FL 4-1 Accessing MOP from VMS Systems The MOP console carrier on a VMS operating system is included as part of the Network Control Program (NCP) facility, which requires a DECnet license. You do not need increased user privileges to use the NCP facility; however, to establish a console carrier session, you must know the following: · The Ethernet address of the bridge used for management · The Ethernet name of the circuit containing the bridge The circuit name is needed because a VMS operating system may have more than one Ethernet interface. The Ethernet address is located on the DECbridge 90 unit front panel label. Table 4-1 lists the Ethernet circuit names, based on system types, that apply. Table 4-1 Ethernet Circuit Names for Systems ------------------------------------------------------------ System Ethernet Circuit Name ------------------------------------------------------------ VAX 6000 and VAX 9000 XMI computers mna-0 BI-based systems (VAX 6300 and VAX 6400 computers) bna-0 VAX 4000 computer series isa-0 MicroVAX systems, and VAX 3600 and VAX 3900 computers qna-0 VAXstation 2000 and VAXstation 3000 computer series sva-0 VAX-11/780 and VAX-11/785 computers (UNIBUS) una-0 ------------------------------------------------------------ 4-2 Managing the DECrepeater 90FL Example: If the bridge address is 08-00-2B-01-23-45 and the Ethernet circuit name is sva-0, a typical VMS system command line to establish the session from a VAXstation 3100 computer is: $ MCR NCP CONNECT VIA SVA-0 PHYSICAL ADDRESS 08-00-2B-01-23-45 When you establish the connection, the following message appears on the screen: Console connected (press CTRL/D when finished) Accessing a Bridge Repeatedly If you need to access a specific bridge repeatedly, you can enter the Ethernet address for the bridge in the NCP database by choosing an arbitrary address in area 13. Bridge names in the NCP database may have a maximum of six characters. Example: If you name your bridge DBRG1 on address 13.87 and access it from a VAX 6400 computer (the Ethernet circuit name is bna-0), you could use the following commands: $ NCP NCP> DEFINE NODE DBRG1 ADDRESS 13.87 HARDWARE 08-00-2B-01-23-45 SERVICE CIR BNA-0 NCP> SET NODE DBRG1 ALL To access the bridge, enter the following: $ NCP CONNECT NODE DBRG1 Accessing MOP from ULTRIX Systems On ULTRIX operating systems, the console carrier is a separate utility included as part of the MOP option. This option is part of the regular distribution, however, it is not selected by default and is not included in the basic installation. You can install the MOP option from the original distribution media using the setld utility. You must have superuser privileges to invoke console carrier. Once the MOP option is installed, each bridge to be managed must be given a name and a dummy node number using the addnode utility. For example: # addnode 13.1 DBRG1 Managing the DECrepeater 90FL 4-3 After the name and node number are assigned, you can establish the link at any time using the ccr command: # ccr -n DBRG1 -h 08-00-2B-01-23-45 -c sva-0 In this example, the -h qualifier is followed by the station address of the DECbridge unit to be attached. The -c qualifier is followed by the name of the Ethernet circuit to use for the connection. Ethernet circuit names, based on system type, apply. Refer to Table 4-1 for circuit names. Console Carrier User Interface The DECbridge 90 unit is not shipped with a pre-set password; therefore, no password prompt appears on the screen when you connect for the first time. For secure operation of the DECbridge 90 unit, you should define a password using the DEFINE BRIDGE PASSWORD command. The password prompt is represented by the pound sign (#). If you do not define a password, then the password prompt does not appear on the screen when you log in. You have three attempts to enter a password; if all three attempts fail, then you must disconnect and try again. After you enter the correct password, or if there is no password, the DECbridge console carrier management banner and prompt will appear on the screen as follows: Copyright © Digital Equipment Corporation 1991. DEWGF V2.0 08-00-2B-2D-9B-81 EPROM V2.7 ©1991,92 Digital Equip Corp 25-JUN-92 DECbridge> Console Carrier Command Language You can type a question mark (?) at any point in the command line to show a list of the options available at that point in the command line. The system accepts unique command abbreviations. Table 4-2 summarizes the DECbridge commands that apply to the DECrepeater 90FL. For a complete list of DECbridge commands, refer to either the DECbridge 90 Owner 's Manual or the DECbridge 90FL Owner 's Manual. 4-4 Managing the DECrepeater 90FL Table 4-2 Summary of DECbridge 90FL Commands ------------------------------------------------------------ Command Argument and Parameter ------------------------------------------------------------ DEFINE 1 BRIDGE AGE age BRIDGE FLOOD ENABLE DISABLE BRIDGE HUB MANAGEMENT ENABLE DISABLE BRIDGE PASSWORD password string BRIDGE SPANNING TREE ENABLE DISABLE PORT port number ENABLE DISABLE PROTOCOL protocol number FILTER ALL protocol identifier FILTER BACKBONE protocol identifier FILTER GROUP protocol identifier FILTER WORKGROUP protocol identifier FORWARD protocol identifier NONE DISPLAY No arguments or parameters are needed LIST BRIDGE PROTOCOL protocol number SET 2 ALL BRIDGE AGE age BRIDGE FLOOD ENABLE DISABLE BRIDGE HUB_MANAGEMENT ENABLE DISABLE ------------------------------------------------------------ 1 Changes made with the DEFINE command change only the default settings, which are assumed on power-up or reset. DEFINE commands do not change the currently active values. 2 The SET commands change only the currently active values, but do not affect the defaults that are assumed on power-up or reset. (continued on next page) Managing the DECrepeater 90FL 4-5 Table 4-2 (Cont.) Summary of DECbridge 90FL Commands ------------------------------------------------------------ Command Argument and Parameter ------------------------------------------------------------ BRIDGE SPANNING TREE ENABLE DISABLE PORT port number ENABLE DISABLE PROTOCOL protocol number FILTER ALL protocol identifier FILTER BACKGROUND protocol identifier FILTER GROUP protocol identifier FILTER WORKGROUP protocol identifier FORWARD NONE REPEATER SHOW ADDRESS [start index,[stop index] BRIDGE PORT port number REPEATER hub slot number ------------------------------------------------------------ Description of Command Parameters A start index or stop index for an address is a decimal index into the work group forwarding database in the range of 1 to 200. A slot number is a single number ranging from 1 to 8 that identifies a hub slot containing a DECrepeater 90FL. When two DEChub units are connected together, the hub number (1 or 2) is specified before the slot number. For example, the hub slot number 2,4 refers to the fourth slot from the left in the second DEChub, which is the hub that does not contain the DECbridge 90 unit. A password string is a string of a maximum of 16 characters. A port number is either a DECbridge 90 port, or the number of a port on a repeater that is installed in the DEChub backplane with the bridge. The bridge backbone port is 1. The work group port is 2. A port is identified by a hub slot number and the port number within the slot. 4-6 Managing the DECrepeater 90FL Description of Commands This section describes the commands used by the DECrepeater 90FL. The examples used to explain the commands are based on the configuration shown in Figure 4-1, Sample Configuration. DEFINE BRIDGE HUB_MANAGEMENT DISABLE SET BRIDGE HUB_MANAGEMENT DISABLE Disables all repeater management through the DECbridge 90 unit for DECrepeater 90FL units in the DEChub 90 backplane. When disabled, you receive an error message with the SHOW REPEATER, SET PORT, or SHOW PORT commands on repeater ports. You do not receive port number information from the SHOW ADDRESS command. DEFINE BRIDGE HUB_MANAGEMENT ENABLE SET BRIDGE HUB_MANAGEMENT ENABLE Reverses the affect of the SET or DEFINE BRIDGE HUB_MANAGEMENT DISABLE commands. DEFINE BRIDGE PASSWORD password string Lets you change the password string. You are prompted twice for a new password. The password may be a maximum of 16 characters and does not appear on the screen. The system saves the new password. There is no corresponding SET command because the DEFINE BRIDGE PASSWORD takes effect immediately. The MOP option provides a mechanism for setting and checking passwords. This mechanism is intended to provide protection against accidental tampering with parameters and is not intended as a security feature. No attempt is made to prevent compromise of the password by malicious users. The DECbridge 90 should not be used in applications that depend on the prevention of any unauthorized modifications to the parameters. LIST BRIDGE Displays the nonvolatile bridge-wide parameters. Managing the DECrepeater 90FL 4-7 SET PORT [hub number,] slot number,port number DISABLE Disables the attachment of a specific repeater port in the DEChub backplane. The port status indicator on the selected DECrepeater 90 flashes, indicating that the port was disconnected by the network manager. There is no equivalent DEFINE command for disabling repeater ports. Example 1: The expected response to a SET PORT DISABLE command for a DECrepeater 90FL appears as follows: DECbridge>SET PORT 1,3,1 DISABLE Hub 1 slot 3 port 1 segment counter 0 status: disabled-operational SET PORT [hub number,] slot number, port number ENABLE Reverses the effect of SET PORT DISABLE for DECrepeater 90 ports. Example 2: The expected response to a SET PORT ENABLE command for a DECrepeater 90FL appears as follows: DECbridge>SET PORT 1,3,1 ENABLE Hub 1 slot 3 port 1 segment counter 0 status: no carrier loopback SET REPEATER [hub number,]slot number RESET. Resets a specific repeater. There is no output response to this command. All disabled ports are enabled. 4-8 Managing the DECrepeater 90FL SHOW ADDRESS [start index,[stop index]] Displays the station address in a selected range (1 to 200) of entries in the address database. The start index value always appears; however, other entries in the range appear only if they are not empty. Addresses in this database are all in the work group. If indexes are omitted, the addresses of all stations in the work group are listed. When a DECbridge 90 series unit is used with a DECrepeater 90 series repeater, the hub slot number and repeater port to which each station is attached will also appear on the screen. Note that it may take several minutes for the SHOW ADDRESS command to accurately reflect the correct repeater port number for stations recently added to the network or station that have been moved from one port to another. See Appendix B, Management Details, for further information about the SHOW ADDRESS command. Example 1: This command displays all addresses contained within the hub configuration. Address 5 and address 7 show the same hub, slot, and port because both devices are daisy chained on the same port. DECbridge>SHOW ADDRESS Address 1: 08-00-2B-0F-19-23 Address 2: 08-00-2B-10-20-30 hub 2 slot 8 port 4 Address 5: 08-00-2B-10-6A-31 hub 2 slot 3 port 3 Address 6: 08-00-2B-A6-43-17 hub 1 slot 3 port 5 Address 7: 08-00-2B-16-23-4C hub 2 slot 3 port 3 Example 2: The expected response to a SHOW ADDRESS command to a nonexisting address appears as follows: DECbridge>SHOW ADDRESS 3 Address 3: unused Example 3: The expected response of a SHOW ADDRESS command to a valid address appears as follows: DECbridge>SHOW ADDRESS 2 Address 2: 08-00-2B-10-20-30 hub 2 slot 8 port 4 Managing the DECrepeater 90FL 4-9 Example 4: The expected response of a SHOW ADDRESS command for a range of addresses appears as follows: DECbridge>SHOW ADDRESS 2,6 Address 2: 08-00-2B-10-20-30 hub 2 slot 8 port 4 Address 5: 08-00-2B-10-6A-31 hub 2 slot 3 port 3 Address 6: 08-00-2B-A6-43-17 hub 1 slot 3 port 5 SHOW PORT [hub number,] slot number, port number Shows whether the port is enabled or disabled and shows the operational status of the port. Hub numbers can be 1 or 2; slot numbers can be 1 to 8. For the DECrepeater 90T, port numbers are 1 to 8; for the DECrepeater 90C, port numbers are 1 to 6; for the DECrepeater 90FL, port numbers are 1 to 4. Example 1: The expected response to a SHOW PORT command appears as follows: DECbridge>SHOW PORT 3,2 Hub 1 slot 3 port 2 segment counter 0 status: disabled-no carrier loopback The hub was not defined in the command; therefore, the default (1) was used. Example 2: A SHOW PORT command for hub 2 appears as follows: DECbridge>SHOW PORT 2,3,2 Hub 2 slot 3 port 2 segment counter 0 status: operational SHOW REPEATER [[hub slot number,]slot number] Shows the type of repeater and the port status for each port on that repeater. The hub number can be 1 or 2, and slot numbers can be 1 to 8. If you do not include parameters, information is shown for all repeaters in both hubs. Example 1: The expected response to a SHOW REPEATER command appears as follows: DECbridge>SHOW REPEATER Hub 1 slot 3 twisted pair, repeater, rev.1, 8 ports. Hub 1 slot 4 ThinWire repeater, rev.1, 6 ports. Hub 2 slot 3 ThinWire repeater, rev.1, 6 ports. Hub 2 slot 6 twisted pair repeater, rev.1, 8 ports. Hub 2 slot 8 twisted pair repeater, rev.1, 8 ports. 4-10 Managing the DECrepeater 90FL Note that both the DECrepeater 90T and DECrepeater 90C repeaters are installed in the hub. Example 2: The response to a SHOW REPEATER command to a slot that contains a device other than a repeater appears as follows: DECbridge>SHOW REPEATER 1 No repeater responds. Example 3: The response to a SHOW REPEATER command to an empty slot appears as follows: DECbridge>SHOW REPEATER 7 No repeater responds. Example 4: The response to a SHOW REPEATER command for a particular repeater appears as follows: DECbridge>SHOW REPEATER 3 Hub 1 slot 3 twisted pair, rev.1, 8 ports. Hub 1 slot 3 port 0 segment counter 0 status: operational Hub 1 slot 3 port 1 segment counter 1 status: no carrier loopback Hub 1 slot 3 port 2 segment counter 0 status: disabled Hub 1 slot 3 port 3 segment counter 0 status: operational Hub 1 slot 3 port 4 segment counter 1 status: no carrier loopback Hub 1 slot 3 port 5 segment counter 1 status: no carrier loopback Hub 1 slot 3 port 6 segment counter 1 status: no carrier loopback Hub 1 slot 3 port 7 segment counter 1 status: no carrier loopback Hub 1 slot 3 port 8 segment counter 1 status: no carrier loopback Example 5: The response to a SHOW REPEATER command for hub 2, slot 3 appears as follows: DECbridge>SHOW REPEATER 2,3 Hub 2 slot 3 ThinWire, rev.1, 6 ports. Hub 2 slot 3 port 0 segment counter 0 status: operational Hub 2 slot 3 port 1 segment counter 1 status: no carrier loopback Hub 2 slot 3 port 2 segment counter 1 status: no carrier loopback Hub 2 slot 3 port 3 segment counter 1 status: no carrier loopback Hub 2 slot 3 port 4 segment counter 1 status: no carrier loopback Hub 2 slot 3 port 5 segment counter 0 status: operational Hub 2 slot 3 port 6 segment counter 1 status: no carrier loopback Managing the DECrepeater 90FL 4-11 Example 6: The response to a SHOW REPEATER command for hub 2, slot 7 appears as follows: DECbridge>SHOW REPEATER 2,7 Hub 2 slot 7 AUI, rev.1, 1 port. Hub 2 slot 7 port 0 segment counter 0 status: operational Hub 2 slot 7 port 1 segment counter 1 status: no carrier loopback Example 7: The response to a SHOW REPEATER command for hub 2, slot 7 appears as follows: DECbridge>SHOW REPEATER 2,7 Hub 2 slot 7 Fiber, rev.1, 4 port. Hub 2 slot 7 port 0 segment counter 0 status: operational Hub 2 slot 7 port 1 segment counter 1 status: operational Hub 2 slot 7 port 2 segment counter 2 status: operational Hub 2 slot 7 port 3 segment counter 3 status: operational Hub 2 slot 7 port 4 segment counter 4 status: operational Example 8: The response to a SHOW REPEATER command when the DECbridge 90 unit is not the hub manager or the DECbridge 90 unit is still in the power-up stage appears as follows: DECbridge>SHOW REPEATER The DECbridge 90 is not the designated hub manager. There is a 60-second delay after power-up before the DECbridge takes control of the hub. 4-12 Managing the DECrepeater 90FL Figure 4-1 Sample Configuration Managing the DECrepeater 90FL 4-13 Typical Management Techniques The DECrepeater 90FL can be managed as a standalone unit using LEDs, or online within a group of repeaters installed in a DEChub 90. The DECrepeater 90FL comes with LEDs that indicate system status in a standalone configuration. In a DEChub 90 environment, the repeater may be managed using LEDs as well as online management. Remote Network Management with the DECbridge 90 You can manage a DECrepeater 90FL with a DECbridge 90 work group bridge and a DEChub 90 backplane. The DECbridge 90 unit communicates across the DEChub 90 backplane to any repeaters in the DEChub. You can also connect two DEChub 90 backplanes together and manage the repeaters in both DEChub 90 backplanes with one DECbridge 90 unit. The DECbridge 90 unit communicates with the DECrepeater 90FL units using unique signals on the DEChub backplane. The two DEChub 90 backplanes are connected with two cables: 1. ThinWire coaxial cable to carry the work group Ethernet signals 2. DECconnect office cable to carry the management signals ------------------------------------------------------------ Note ------------------------------------------------------------ If two DEChub backplanes are being managed by one bridge, the backplanes must be connected BNC to BNC using ThinWire cable (part number BC16M-xx where xx stands for length) and a DECconnect office cable (part number BC16E-xx). ------------------------------------------------------------ Management Disconnect A port can be partitioned at any time by the management protocol. The management protocol can be used only for the repeater ports mounted in the DEChub 90 backplane and connected to a DECbridge 90 unit. When a port is disconnected by the management protocol, it can be reconnected either by turning the power off and then on again, or by using the management protocol. If the port LED flashes approximately twice a second, the port is partitioned by the management protocol. Whether your configuration is a standalone or a DEChub 90 installation, you should create a network topology map to help facilitate management tasks. 4-14 Managing the DECrepeater 90FL Figure 4-2 shows a typical network topology map. Figure 4-2 Typical Network Topology Map Management Session To perform online management commands, establish a MOP console carrier session with the bridge from any remote node. After you connect to the bridge, the following prompt appears on the screen: DECbridge> When a bridge goes through a power cycle or is reset, the bridge begins to poll repeaters for status. This process includes a special algorithm to determine which repeater ports have stations that are attached. The time to complete this algorithm depends on the number of repeaters and the network activity. You should allow time before proceeding to manage the hub. For the same reason, it can take time for the system to report on stations or repeaters that are moved in the hub. See Appendix B, Management Details, for further information. Example of a Typical Management Session The following steps show how you can use the SHOW REPEATER and SHOW ADDRESS commands in a typical management session. 1. Determine what repeaters are in the hub. DECbridge>SHOW REPEATER Hub 1 slot 5 ThinWire repeater, rev.0, 8 ports. In this example, there is a ThinWire repeater (DECrepeater 90C) in the same hub (hub 1) as the bridge (if this is a 2-hub configuration). The repeater is in slot 5 with 6 ThinWire ports. Managing the DECrepeater 90FL 4-15 2. Determine what stations are connected to the repeaters in the hub. DECbridge>SHOW ADDRESS Address 1: 08-00-2B-19-94-FB Address 2: 08-00-2B-1E-2D-0C hub 1 slot 5 port 3 This indicates that a station with address 08-00-2B-1E-2D-0C is connected to the repeater in slot 5 on port 3. At this point, without physical examination, you have enough information to construct a network map. 3. Determine the status of all ports on the repeater. DECbridge>SHOW REPEATER 5 Hub 1 slot 5 twisted pair, rev.1, 6 ports. Hub 1 slot 5 port 0 segment counter 0 status: operational Hub 1 slot 5 port 1 segment counter 0 status: excessive collisions Hub 1 slot 5 port 2 segment counter 0 status: excessive length collision Hub 1 slot 5 port 3 segment counter 0 status: operational Hub 1 slot 5 port 4 segment counter 0 status: excessive length collision Hub 1 slot 5 port 5 segment counter 0 status: excessive length collision Hub 1 slot 5 port 6 segment counter 0 status: excessive length collision Hub 1 slot 5 port 7 segment counter 0 status: excessive length collision Hub 1 slot 5 port 8 segment counter 0 status: excessive length collision Continue to use the SHOW REPEATER command for each port on the repeater. If Problems are Reported The following table describes the status messages and the most common causes. ------------------------------------------------------------ Message Most Common Cause ------------------------------------------------------------ Operational Cable connected, everything OK. Excessive length collision Cable fault, usually either a port that is not connected to anything or an open cable. In the case of 10BaseT, the remote station may be powered down (no link beat). Excessive collisions Cable fault, usually either a port that is not connected to anything or an open cable. In the case of 10BaseT, the remote station may be powered down (no link beat). No carrier loopback Cable fault, usually a shorted cable. Transmit carrier drop out Cable fault, usually a shorted cable. Jabber Stations connected to this port continue to transmit; expect a faulty station. ------------------------------------------------------------ 4-16 Managing the DECrepeater 90FL The operational condition is normal. All other conditions cause the repeater to automatically partition the port. When the condition clears, the repeater automatically reconnects the port and reports it it as operational unless it is partitioned by management. To help solve intermittent problems, the repeater reports a segmentation count. This count runs from 0 to 15 and then latches at 15. Every time you enter the SHOW REPEATER command, this count is set to zero. If this count is not zero, you can tell that a port has partitioned since the last SHOW REPEATER command. This partitioning occurs normally if users turn stations on and off, or if cables are connected and disconnected from the repeater during installation and reconfiguration. If none of these normal causes have occurred, there may be an intermittent problem with cabling or attached stations. To Disable a Port The following command allows the manager to disable a particular port on a repeater. This may be useful if stations that are attached to that port are causing network difficulties. DECbridge>SET PORT 5,1 DISABLE Hub 1 slot 5 port 1 segment counter 0 status: disabled-no carrier loopback To Reset the Repeater The following command resets the repeater to power-up condition. This includes restoring any ports that have been partitioned by the manager as well as resetting the segmentation counters. DECbridge>SET REPEATER 5 RESET Managing the DECrepeater 90FL 4-17 Error Messages Table 4-3 describes the DECbridge 90 error messages. For a complete list of messages, refer to either the DECbridge 90 Owner 's Manual or the DECbridge 90FL Owner 's Manual. Table 4-3 DECbridge 90 Messages ------------------------------------------------------------ Error Message Description ------------------------------------------------------------ Address n: unused Address number n does not contain a station address. Confirmation error - password not changed The second entry or verification of the new password provided to the DEFINE BRIDGE PASSWORD command did not match the first entry. DECbridge 90 is not the designated hub manager The DECbridge 90 was not the designated hub manager when either the SHOW PORT or SHOW REPEATER command was issued. This occurs when · The bridge is reset and, for 60 seconds, the DECbridge is not the hub manager. · Another DECbridge unit is acting as the current hub manager. · A fault exists in the BC16E cable or in the connections between two DEChub backplanes. · A fault exists in the power supply of one of the DEChub units. This prevents repeater management communication. Hub management disabled A SHOW PORT or SHOW REPEATER command was issued to a DECbridge 90 for which repeater manage- ment is disabled. Enable repeater management with the SET BRIDGE HUB_MANAGEMENT ENABLE command before trying again. Hub number and slot number [ [hub], slot]. Hub is 1 or 2, slot is 1-15 One or more parameters provided to the SHOW REPEATER command were out of range. The hub number must be either 1 or 2. The slot number must be between 1 and 15. Hub h slot s - port number out of range The port number provided to the SHOW PORT command was out of range for the device in hub h slot s. Use the SHOW REPEATER command to determine the number of ports for the device and to specify a port number within that range. (continued on next page) 4-18 Managing the DECrepeater 90FL Table 4-3 (Cont.) DECbridge 90 Messages ------------------------------------------------------------ Error Message Description ------------------------------------------------------------ Hub h slot s not a repeater The device does not use the same management protocol as the DECrepeater 90 series repeaters. The device ports, if any, cannot be managed by the DECbridge 90 unit. Hub h slot s unrecognized type The repeater type in hub h slot s is not known to the DECbridge 90. The repeater ports can still be managed with the DECbridge 90. No repeater responds There is no repeater installed in the requested hub slots, or the repeater is not functioning. No such port The bridge port number provided to the SHOW PORT command was invalid. Valid numbers are 1 and 2. Password too long - not changed A password longer than 16 characters was given to the DEFINE BRIDGE PASSWORD command. Port number [[hub,]slot,]port One of the parameters provided to a SET PORT or DEFINE PORT command was not a valid hub, slot, or port number. Station address number [first [,last] ] in range 1-200 One or more parameters provided to the SHOW ADDRESS command was invalid. The valid range is 1 to 200. Unsupported by this hardware revision This occurs when you attempt to execute a SET or DEFINE BRIDGE FLOOD command on a bridge with a firmware revision of 1 (DECbridge 90 V1.4) but have loaded V2.5 or a later version flash EPROM. The old hardware revision does not support flood mode. These version numbers appear in the MOP console connection banner. ??? A command or parameter was not recognized. Enter ? to display valid commands. 180501 A loopback diagnostic has run and passed on the backbone port. If the backbone port is not receiving any messages, this diagnostic is run every 10 minutes. 180201 A loopback diagnostic has run and passed on the work group port. If the work group port is not receiving any messages, this diagnostic is run every 10 minutes. 1805:00-00-00-00 01 A loopback diagnostic has run and failed on the backbone port. The diagnostic is tried every 5 seconds until the test passes. (continued on next page) Managing the DECrepeater 90FL 4-19 Table 4-3 (Cont.) DECbridge 90 Messages ------------------------------------------------------------ Error Message Description ------------------------------------------------------------ 1802:00-00-00-00 01 A loopback diagnostic has run and failed on the work group port. The diagnostic is tried every 5 seconds until the test passes. ------------------------------------------------------------ Standalone Configuration Management The recommended process for managing a small standalone network is as follows: · Maintain records indicating which stations are connected to each port on each repeater. It may be desirable to draw a network topology map (Figure 4-2). · Observe the LEDs on the repeater for network status. Refer to the first three items in Table 1-1 for a description of each LED and its function. ------------------------------------------------------------ Note ------------------------------------------------------------ After you power up a standalone DECrepeater 90FL, all LEDs, except the network activity LED, stay on if there are no active connections, or if there is no hardware or network activity. After an active station is connected to one of the ports, the LED for the active port stays on and all other ports turn off. ------------------------------------------------------------ 4-20 Managing the DECrepeater 90FL 5 ------------------------------------------------------------ Troubleshooting This chapter provides troubleshooting information for the DECrepeater 90FL repeater when used as a standalone unit or when installed in the DEChub 90 backplane. Before you start to troubleshoot a problem: 1. Verify the installation of the repeater. The installation must meet the configuration rules provided in Chapter 2, Configuring the DECrepeater 90FL. 2. Note the fault condition. 3. Isolate the problem. Port Partitioning Any messages or data packets received from any port by the DECrepeater 90FL are transmitted to all ports. The port status LEDs display the following port partition status: On The port is not partitioned. Off The port is autopartitioned. Flashing The port is partitioned by management. Each port is automatically controlled by the repeater function and can be partitioned for any of the reasons shown in Table 5-1 and Table 5-2. Troubleshooting 5-1 Table 5-1 DECrepeater 90FL Status Indicators ------------------------------------------------------------ LED Fault Non-Fault ------------------------------------------------------------ Ports 0 through 4 flashing - Partitioned by management. Port 0 off Open cables Shorted cables Cables not properly connected Port not connected. Ports 1 through 4 off Link problem (see Table 5-2) Link not connected. ------------------------------------------------------------ Table 5-2 DECrepeater 90FL Fiber-Link Status Indicators ------------------------------------------------------------ LED Fault Correction ------------------------------------------------------------ Ports 1 through 4 off Cables not connected Connect fiber-optic cables. Transmit/receive not connected Cross over the cables (transmit to remote receive; receive to remote transmit). Lack of idle signal Power up the remote repeater/DTE. Low light Reduce attenuation of the fiber segment. Consider cable type, link loss, and connector loss variables. ------------------------------------------------------------ 5-2 Troubleshooting DECrepeater 90FL Standalone Troubleshooting To troubleshoot a DECrepeater 90FL standalone installation, refer to Table 5-3 for a list of possible error conditions and the corrective action. Table 5-3 Troubleshooting a DECrepeater 90FL Standalone Unit ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ All LEDs are off. Check the ac power connection. Check that the power supply is properly plugged into the power outlet. Check the power to the power outlet. Check the power supply. Check the 7-pin connector at the repeater unit. If the connections are okay, replace either the power supply (for 120 V operation) or both the power supply cord and power supply (for 240 V operation). The network activity LED is off. There is low network activity or no network activity. Ensure that network activity is present. If the network activity LED still fails to light Turn the repeater off and on by unplugging and replugging the power supply. Check that the network activity LED comes on momentarily. If the network activity LED lights momentarily, the LED portion of testing has passed. If the network LED fails to light Replace the repeater. The port 0 status LED is off. If port 0 is connected, the port may be segmented or the LED may have failed. Remove all network connections to the repeater. Power the repeater off and on by unplugging and replugging the power supply. All port status LEDs should come on and, in the absence of network activity, remain on. If the port 0 status LED does not light and/or remain on Replace the repeater. (continued on next page) Troubleshooting 5-3 Table 5-3 (Cont.) Troubleshooting a DECrepeater 90FL Standalone Unit ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ If the port 0 status LED does remain on, the port may be segmented when connected to the network. Terminate port 0 with a T-connector and two 50-ohm terminators. Reconnect a front panel fiber segment carrying network activity. The repeater activity LED will light. If the port 0 status LED does not remain on Replace the repeater. If the port 0 status LED does remain on Remove the T-connector and the terminators and reconnect the ThinWire segment. If the port 0 status LED turns off, either the ThinWire cable is open, shorted, improperly terminated, or the external equipment is transmitting incorrect data. Confirm the operation of the external equipment and cable, or replace it with a known good segment carrying valid traffic. A fiber-link LED is off. Ensure the cable to the receive channel of the port in question is good, and the external equipment is transmitting the idle signal. Reconnect the same cables and external device to another repeater port. If the fiber-link LED for the new port comes on, the fiber-link LED of the original port is faulty. Replace the repeater. Port 1, 2, 3, or 4 status LED is off. The fiber port may be segmented or the LED may have failed. Ensure that network activity is present (a segmented port will require data to return to normal status). The repeater activity LED should be on. If the fiber-link LED is on Remove all network connections from the repeater. Turn the repeater off and on. Check that all the port status LEDs come on. There will be no activity; therefore, the port status LEDs should remain on. If all port status LEDs do not remain on Replace the repeater. (continued on next page) 5-4 Troubleshooting Table 5-3 (Cont.) Troubleshooting a DECrepeater 90FL Standalone Unit ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ If all port status LEDs do remain on, the port in question may be segmenting in use. This occurs if the port in question does not receive the idle signal from the external device or the external device is transmitting improperly. Reconnect the port in question. The fiber-link LED should come on and the status LED should remain on. If the fiber-link LED does not come on Refer to the fiber-link troubleshoot- ing section of this table. If the fiber-link LED does come on but the port status LED turns off Confirm the operation of the external device. Connect the same device to another fiber port. If the fiber-link and status LEDs of the second port are both on, the fault is internal to the transmitter of the original port. Replace the repeater. No traffic is received from or by an external device connected to a fiber-optic port with both fiber-link and port status LEDs on. It is possible that the external device is not receiving the idle signal from the repeater. Use a single cable to loop the transmit channel of the port in question to the receive channel of another repeater port. If the fiber-link LED of the receiving port lights, the idle signal is present. Check the cable to the external device, and check the external device for correct operation. If the fiber-link LED of the receiving port does not come on Replace the cable with a known good cable. If the fiber-link LED of the receiving port still fails to come on Replace the repeater. ------------------------------------------------------------ Troubleshooting 5-5 DECrepeater 90FL Backplane Troubleshooting To troubleshoot a DECrepeater 90FL installed in a DEChub 90 configuration, refer to Table 5-4 for a list of possible error conditions and the corrective action. Table 5-4 Troubleshooting a DECrepeater 90FL in a DEChub 90 Backplane ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ The power LED is off. The DECrepeater 90FL is not receiving +5.0 V. Check the power LED on the DEChub 90 power supply. If the power LED on the DEChub 90 is off, there is a problem with the DEChub 90 power supply. See the troubleshooting procedures in the DEChub 90 Owner 's Manual. If the power LED on the DEChub 90 power supply is on, are the power LEDs on the other units plugged into the backplane off? If they are on, the DECrepeater 90FL has a power problem. Reseat the DECrepeater 90FL in the same slot or in another slot. If the power LED on the DEChub 90 power supply is on, are the power LEDs on the other units plugged into the backplane off? If they are off, the DEChub 90 has a power problem. See the troubleshooting procedures in the DEChub 90 Owner 's Manual. If the power LED turns on when reseated in the same slot, the repeater was not properly seated. Ensure that the repeater is properly seated in the slot. If the power LED turns on when reseated in another slot, the problem is in the DEChub 90. See the troubleshooting procedures in the DEChub 90 Owner 's Manual. If the repeater does not turn on in either slot, or a known good slot, the repeater is defective. Replace the DECrepeater 90FL. (continued on next page) 5-6 Troubleshooting Table 5-4 (Cont.) Troubleshooting a DECrepeater 90FL in a DEChub 90 Backplane ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ The network activity LED is off. The repeater or any other unit in the DEChub 90 may not be connected to an active segment. Connect a known active segment to any unit in the DEChub 90. Look for an indication of network activity on any unit in the DEChub 90. If the repeater is connected to a known active segment and the LED is off, the repeater is defective. Replace the repeater. See the following port 0 status section. The port 0 status LED is off. Port 0 may be segmented or the LED may be defective. Remove all front panel fiber port connections. Power the repeater off and on by reseating the unit in the DEChub 90. Ensure that the port 0 status LED lights and remains on. If the port 0 status LED does not light and remain on Plug the repeater into another slot in the DEChub 90. If possible, choose a known good slot. If the port 0 status LED does not light and remain on Replace the repeater. If the port 0 status LED does light and remain on, there is a problem with the DEChub 90. See the troubleshooting procedures in the DEChub 90 Owner 's Manual. If any other units in the DEChub 90 indicate network activity, the repeater activity LED should be on. If the port 0 status LED is on and the activity LED is off, port 0 is not receiving traffic. Replace the repeater. If the port 0 status LED is on, and the activity LED is on, the front panel fiber ports should be reconnected. Reconnect the front panel fiber ports. (continued on next page) Troubleshooting 5-7 Table 5-4 (Cont.) Troubleshooting a DECrepeater 90FL in a DEChub 90 Backplane ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ Port fiber-link LED is off. Ensure the cable to the receive channel of the port in question is good, and that the external equipment is transmitting the idle signal. Reconnect the same cables and external device to another repeater port. If the fiber-link LED for the new port comes on, the original port fiber-link LED has failed. Replace the repeater. Port 1, 2, 3, or 4 status LED is off. The fiber port may be segmented or the LED may have malfunctioned. Disconnect all front panel fiber connections to the repeater. Power the unit off and on by removing and reseating it in the DEChub 90. All port status LEDs should light momentarily. (If there is no activity on the DEChub 90, they will light and stay on.) If any port status LED does not light momentarily Replace the repeater. If all port status LEDs do light momentarily, the ports should be reconnected one at a time. Reconnect each fiber port receive channel. Note that the external device will not be receiving the idle signal and should not be transmitting data; therefore, the port fiber-link and status LEDs should light as each receive channel is connected. If the fiber-link LED lights and the port status LED does not come on Reconnect the receive channel of a different port on the repeater. If the fiber-link LED lights and the port status LED fails to light Ensure that the external equipment is operating properly. Connect the transmit channel of a known good device to the receive channel of the port(s) in question. (continued on next page) 5-8 Troubleshooting Table 5-4 (Cont.) Troubleshooting a DECrepeater 90FL in a DEChub 90 Backplane ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ If the fiber-link LED lights and the port status LED remains off Check that the repeater network activity LED is on. An unconnected port will be segmented and will require good data to be transmitted before it is unsegmented. Connecting the receive channel of a port should establish the link, but a good packet of data will have to be available for transmission to unsegment and return the port to normal status. If the fiber-link LED lights and the port status LED remains off while the repeater activity LED is on Replace the repeater. If the fiber-link and status LEDs both come on Connect the transmit channel of the port to the external equipment. If the port status LED does not remain on Ensure that the external equipment is operating properly. Replace the equipment with a known good device. If the port status LED fails to remain on, the port transmitter may be sending the idle signal, but may not be passing data. Replace the repeater. No traffic is received from or by an external device connected to a fiber port with both fiber- link and port status LEDs on. It is possible that the external device is not receiving the idle signal from the repeater. Use a single cable to loop the transmit channel of the port in question to the receive channel of another repeater port. If the fiber-link LED of the receiving port lights, the idle signal is present. Check the cable to the external device, and check the external device for correct operation. If the fiber-link LED of the receiving port does not come on Replace the cable with a known good cable. (continued on next page) Troubleshooting 5-9 Table 5-4 (Cont.) Troubleshooting a DECrepeater 90FL in a DEChub 90 Backplane ------------------------------------------------------------ If... Then... Do this... ------------------------------------------------------------ If the fiber-link LED of the receiving port still fails to come on Replace the repeater. ------------------------------------------------------------ 5-10 Troubleshooting A ------------------------------------------------------------ Specifications and Parts List This appendix provides the specifications and parts list for the DECrepeater 90FL repeater. Specifications for the DECrepeater 90FL are divided into the following categories: · Physical dimensions · Environmental (operating and shipping) specifications · Power specifications Table A-1 lists the physical dimensions of the DECrepeater 90FL. Table A-1 Physical Dimensions ------------------------------------------------------------ Dimension Measurement ------------------------------------------------------------ Height 3.5 cm (1.4 in) Width 28.0 cm (11.0 in) Depth 14.0 cm (5.5 in) Weight .77 kg (1.7 lb) ------------------------------------------------------------ Specifications and Parts List A-1 Table A-2 lists the operating environment specifications for the DECrepeater 90FL. Table A-2 Operating Environment ------------------------------------------------------------ Condition Value ------------------------------------------------------------ Temperature 5°C to 50°C (41°F to 122°F) Maximum rate of change 20°C/hr (36°F/hr) Relative humidity 10% to 95% (noncondensing) Wet-bulb temperature 32°C (90°F) maximum Dew point 2°C (36°F) minimum Altitude Sea level to 2.4 km (8000 ft) Air flow Convectively cooled. A minimum of 10 cm (4 in) of space must be provided on both ends of the unit for adequate air flow. ------------------------------------------------------------ The DECrepeater 90FL is designed to operate in an office environment or equipment room environment such as telephone closets or satellite equipment rooms. It is not intended to operate in an air plenum. Table A-3 lists the shipping environment specifications for the DECrepeater 90FL. Table A-3 Shipping Environment ------------------------------------------------------------ Condition Value ------------------------------------------------------------ Temperature -40°C to 66°C (-40°F to 151°F) Relative humidity 10% to 95% (noncondensing) Altitude Sea level to 4.9 km (16,000 ft) ------------------------------------------------------------ A-2 Specifications and Parts List Table A-4 lists the power specifications for the DECrepeater 90FL. Table A-4 Power Specifications ------------------------------------------------------------ Specification Value ------------------------------------------------------------ Voltage (domestic) 104 Vac to 128 Vac (nominal 120 Vac) Voltage (international) 208 Vac to 256 Vac (nominal 240 Vac) AC cord length 6 ft Current at 120 V .25 A Current at 240 V .125 A Frequency 50 Hz to 60 Hz Power consumption 9 W Output voltage 5.1 Vdc DC cord length 8 ft Output current 1.8 A ------------------------------------------------------------ The DECrepeater 90FL features either a self-contained power supply or self-contained power supply and power cord option. Table A-5 lists the DECrepeater 90FL voltage and current specifications. Table A-5 DECrepeater 90FL Input ------------------------------------------------------------ Specification Value ------------------------------------------------------------ Input voltage 4.75 to 5.25 Vdc Input current 1.7 A ------------------------------------------------------------ Parts List Table A-6 lists the replacement parts for a DECrepeater 90FL. Table A-6 Parts List ------------------------------------------------------------ Replacement Part Part Number ------------------------------------------------------------ DECrepeater 90FL DEFMR-MA Fiber-optic cables BN24E series Power supply (110 Vac) H7082-AA Power supply (220 Vac) H7082-BA ------------------------------------------------------------ Specifications and Parts List A-3 B ------------------------------------------------------------ Management Details This appendix supplements the management information in Chapter 4, Managing the DECrepeater 90FL; it provides the following information for managing a DECrepeater 90FL in a DEChub backplane: · Designating a hub manager · Annotating the bridge address table · Using the work group bridge address table for work group management Designating a Hub Manager The protocol used on the DEChub management bus allows for only a single manager unit to access the management bus. When a DECbridge 90 series unit is first powered up or reset, the bridge waits 60 seconds before it is established as the designated hub manager. This delay ensures that there is no other manager unit in use in the hub. During the 60 seconds, you cannot remotely manage the DECrepeater 90FL. This restriction does not apply to the repeaters themselves. A repeater inserted into the hub is immediately manageable by whatever unit is currently the designated hub manager. If you receive the following message after a DECbridge 90 unit has been running for 60 seconds, then there is something wrong. The DECbridge 90 is not the designated hub manager. When this message appears, check the following: · If you are using two hubs, be sure that the BNE16 cable or DECconnect office cable is wired correctly, and that it is not shorted or broken. · If you are using only one hub, the MMJ connector should be disconnected. Only one DECbridge 90 unit is allowed in the hub. If more than one is inserted, only one is able to manage the repeaters. The other unit issues the message. Management Details B-1 If you do not want a specific DECbridge 90 unit to be the designated hub manager, use the DEFINE BRIDGE HUB_MANAGEMENT DISABLE command to disable the hub management features. You can use the SHOW REPEATER and SET or SHOW PORT commands without restriction once the DECbridge 90 unit is the designated hub manager. There is, however, an additional delay before the SHOW ADDRESS command has complete information. The DEFINE commands do not take effect until the next SET ALL or RESET bridge commands are used. To have the command take effect immediately, you must also issue the corresponding SET command. Annotating the Bridge Address Table The DECbridge 90 series unit SHOW ADDRESS command lists the repeater slot number and port number for every station in the work group that is connected to the same DEChub with a repeater. However, when changes are made to the network topology, there is a time lapse before the changes appear in the bridge address table. The algorithm for creating this information for every station in the work group is as follows: · Tell the repeaters to wait for a message from this station. · Wait as long as 90 seconds for the station to transmit a message. · Ask the repeaters what port the message came from. If a station does not transmit a message within 90 seconds, the algorithm proceeds to the next station. In a typical network situation, this information is complete in a few minutes. After a bridge is newly installed or reset, this information should be complete after approximately 10 minutes of operation. If some stations do not often transmit messages, the DECbridge can hang on those stations as long as 90 seconds each before going to the next one. If you add a station or move a station to another port, it could take about 10 minutes before the SHOW ADDRESS command recognizes this move. If you remove a station from the network entirely, it should take a full address age time (default is 30 minutes) for the DECbridge 90 unit to notice the removal. If you remove several stations at once, the DECbridge 90 unit hangs on each of these stations for 90 seconds, until they age out of the bridge address database. In this case, it usually takes the full address age time (30 minutes) before the port number annotations are complete. B-2 Management Details As a worst case example, if it takes 60 seconds for each of the recommended 200 stations to transmit a message, it could take 200 minutes to complete the address database annotations. However, the DECbridge 90 unit tries to expedite the transmission as follows: · If the station remains quiet after waiting 30 seconds for a message, the DECbridge 90 unit attempts to generate a response using the IEEE XID request. · If the IEEE XID request fails, the DECbridge 90 unit tries a MOP system-ID request. For these reasons, the DECbridge 90 unit never hangs for more than 30 seconds on an IEEE conforming station, or for more than 60 seconds on any Digital station that pre-dates the IEEE specifications. If you are monitoring messages and protocols on your work group Ethernet, you occasionally see these messages. Using the WGB Address Table for Work Group Management The work group bridge Ethernet address table is dynamic: Ethernet addresses are added to the table when a device first transmits on the network; addresses are removed when a device does not retransmit for a user-specified period, from 1 to 32767 seconds (about 10 hours). The default is 15 minutes. When a device is learned or relearned after it has timed out, the address is listed in the lowest empty entry of the address table. This continuous learning, timeout, and relearning of the Ethernet addresses means that devices in a particular work group may or may not be in the address table at any moment. If they are in the address table, they may not be in a consistent database location. Devices such as personal computers or laptop computers that are removed and reconnected elsewhere, timeout from the address table. When the device is reconnected, the addresses for these devices are stored in a different address table location. Because the address table is dynamic, the network manager cannot easily compare printouts of the work group bridge address table to determine work group changes on a day-to-day or week-to-week basis. Management Details B-3 C ------------------------------------------------------------ Related Documentation This appendix lists related documentation and provides ordering information. ------------------------------------------------------------ Document Title Order Number ------------------------------------------------------------ DECbridge 90 Owner 's Manual EK-DEWGB-OM DECbridge 90FL Owner 's Manual EK-DEWGF-OM DEChub 90 Owner 's Manual EK-DEHUB-OM Open DECconnect Building Wiring Components and Application Catalog EB-K2407-42 DECconnect System Planning and Configuration Guide EK-DECSY-CG ------------------------------------------------------------ Ordering Information Customers may order documents by phone or mail. Continental USA and Puerto Rico Call 1-800-258-1710 or send mail to: Digital Equipment Corporation Peripherals and Supplies Group P.O. Box CS2008 Nashua, NH 03061 New Hampshire, Alaska, and Hawaii Call 1-603-884-6660. Outside the USA and Puerto Rico Send mail to: Digital Equipment Corporation Attn: Accessories and Supplies Business Manager c/o local subsidiary or Digital-approved distributor Related Documentation C-1 Digital Personnel Digital personnel may order these documents from: Digital Equipment Corporation 444 Whitney Street Northboro, MA 01532 Attn: Publishing and Circulation Services (NR03/W3) Order Processing Section C-2 Related Documentation ------------------------------------------------------------ Index A ------------------------------------------------------------ Accessing a bridge, 4-3 Address number, 4-6 B ------------------------------------------------------------ Backplane connector, 1-2 cover, 1-2 installation, 3-6 to 3-7 BNC network connector, 1-2 Bridge names maximum length, 4-3 C ------------------------------------------------------------ Commands abbreviations, 4-4 arguments and parameters, 4-5 console carrier, 4-4 to 4-6 for DECbridge 90FL, 4-4 to 4-6 for DECrepeater 90FL, 4-6 to 4-12 parameters, 4-6 Configuration rules, 2-1 extended LAN, 2-3 to 2-4 number of repeaters, 2-1 to 2-3 segment length, 2-1 Connections backplane, 3-6 standalone, 3-4 to 3-5 ThinWire, 3-4 Connector backplane, 1-2 Connector (cont'd) BNC network, 1-2 fiber-optic receive cable, 1-2 fiber-optic transmit cable, 1-2 power, 1-2 Console carrier commands, 4-4 to 4-6 to establish a session from ULTRIX, 4-3 to 4-4 to establish a session from VMS, 4-2 to 4-3 user interface, 4-4 Constraints installed fiber, 2-5 network, 2-1 to 2-2 D ------------------------------------------------------------ DC OK indicator, 1-2 DEChub 90 backplane See backplane. DECrepeater 90FL backplane troubleshooting, 5-6 to 5-10 environmental specifications, A-1 features, 1-1 LEDs and connectors, 1-2 managed in backplane, 1-1 operating environment, A-2 physical dimensions, A-1 power specifications, A-3 shipping environment, A-2 standalone troubleshooting, 5-3 to 5-5 unmanaged as standalone, 1-1 voltage specifications, A-3 Index-1 E ------------------------------------------------------------ Error messages, 4-18 to 4-20 Ethernet addresses, 4-2 arbitrary address, 4-3 circuit names, 4-2 F ------------------------------------------------------------ Fiber-link status indicators, 1-2 Fiber-optic receive connector, 1-2 Fiber-optic transmit connector, 1-2 H ------------------------------------------------------------ Help command, 4-4 Hub slot number, 4-6 I ------------------------------------------------------------ IEEE 802.3 CSMA/CD networks, 1-1 FOIRL compliant, 1-1 ThinWire compliant, 1-1 Indicators DC OK, 1-2 fiber-link status, 1-2 network activity, 1-2 port 0 status, 1-2 status, 1-2 Installation backplane, 3-6 to 3-7 environmental requirements, 3-1 standalone, 3-1 to 3-5 tool, 3-1 wall-mount, 3-2 to 3-5 L ------------------------------------------------------------ LEDs and connectors, 1-2 to 1-3 M ------------------------------------------------------------ Maintenance Operations Protocol (MOP) See MOP. Management annotating bridge address, B-2 to B-3 components, 4-1 designating a hub manager, B-1 to B-2 port partitioning, 4-14 problems, 4-16 to 4-17 session, 4-15 to 4-16 topology map, 4-14 using bridge address table, B-3 Managing the DECrepeater 90FL, 4-1 to 5-1 from remote network, 4-14 techniques, 4-14 to 4-17 MOP access from ULTRIX, 4-3 access from VMS, 4-2 functions, 4-1 to 4-4 N ------------------------------------------------------------ Network (BNC) connector, 1-2 Network activity indicator, 1-2 Network Control Program (NCP), 4-2 P ------------------------------------------------------------ Password at login, 4-3 defining, 4-3 length, 4-7 security, 4-3 Port 0 status indicator, 1-2 Port number, 4-6 Port partitioning, 5-1 to 5-2 Power supply, 1-1 connector, 1-2 120 Vac, 1-1 240 Vac, 1-1 Index-2 R ------------------------------------------------------------ Repeaters disabling ports, 4-8 port numbers, 4-10 show command, 4-10 slot numbers, 4-10 S ------------------------------------------------------------ Standalone installation, 3-1 to 3-5 Status indicators, 1-2 T ------------------------------------------------------------ Troubleshooting, 5-1 to 5-10 DECrepeater 90FL in DEChub 90 backplane, 5-6 to 5-10 DECrepeater 90FL standalone, 5-3 to 5-5 U ------------------------------------------------------------ ULTRIX access to MOP, 4-3 V ------------------------------------------------------------ VMS access to MOP, 4-2 W ------------------------------------------------------------ Wall-mount installation, 3-2 to 3-5 Index-3