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Digital Equipment DECagent 90 User Information

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DECagent 90
User Information
Order Number: EK–DENMA–UI. A01
Revision/Update Information:
This is a new manual.
Digital Equipment Corporation
Maynard, Massachusetts

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  • Page 1 DECagent 90 User Information Order Number: EK–DENMA–UI. A01 Revision/Update Information: This is a new manual. Digital Equipment Corporation Maynard, Massachusetts...
  • Page 2 First Edition, December 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.

  • Page 3: Table Of Contents

    Description ......... . . 1–1 How the DECagent 90 Works ......1–2 Power Supply .
  • Page 4 Exit ..........4–21 Upgrading the DECagent 90 ......4–21...
  • Page 5 Introduction ......... . 5–1 DECagent 90 Standalone Troubleshooting ....5–2 DECagent 90 Backplane Configuration Troubleshooting .
  • Page 6 Modules ........1–3 1–3 The DECagent 90 Module ..... . 1–4 2–1 Connecting the Cables .

  • Page 7: About This Manual

    Chapter 1 provides an overview of the DECagent 90, and it describes the product’s features, LEDs, and connectors. • Chapter 2 describes how to install the DECagent 90 as a standalone unit or in a DEChub 90 backplane. • Chapter 3 describes the configuration rules you should follow for correct operation of the DECagent 90.
  • Page 8 Conventions The following conventions are used in this manual. Convention Meaning Note Contains general information. Caution Contains information to prevent damage to equipment or software. A lowercase italic n indicates the generic use of a number. For example, 19nn indicates a 4-digit number in which the last 2 digits are unknown.

  • Page 9: Overview

    Overview Introduction This chapter provides an overview of the DECagent 90 module. It also lists the features of the DECagent 90, describes the LEDs and connectors, and provides information about community strings. Features The following list summarizes the features of the DECagent 90. The DECagent 90 •...

  • Page 10: How The Decagent 90 Works

    LJ-01458-TI0 How the DECagent 90 Works The DECagent 90 acts as a proxy agent on behalf of its client modules. This includes the DECserver 90L and the DECbridge 90. The DECrepeater 90C and DECrepeater 90T are managed by a DECbridge 90 in the hub. The DECagent 90...

  • Page 11: Power Supply

    LJ-01882-TI0 Power Supply When operating as a standalone agent, power is supplied to the DECagent 90 with a separate power supply. This power supply is connected to the agent 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.

  • Page 12: Leds And Connectors

    LEDs and Connectors Figure 1–3 shows the DECagent 90 and Table 1–1 describes the DECagent 90 LEDs and connectors. Figure 1–3 The DECagent 90 Module PJ -D 1 20 R E DU C E .4 5 OR G LJ-01459-TI0 1–4 Overview...

  • Page 13: Decagent 90 Leds And Connectors

    ThinWire segment. Not used when the agent is installed in the DEChub 90 backplane. Backplane connector—This provides network and power connections to the DECagent 90 when it is installed in the DEChub 90 backplane. Power connector—Receives +5.0 and +12.0 volts from the DECagent 90 power supply.

  • Page 14: Client Communities For The Decagent 90

    Client Communities for the DECagent 90 Each client community for a DECagent 90 is identified by a unique community address string for each standalone or hub module. Naming Community Strings The easiest way to keep track of the modules with community address strings, is to use a similar name for the hub and community address string.

  • Page 15: Installation

    For a Standalone Installation To install and enable the DECagent 90 as a standalone unit, you need to 1. Select a location. 2. Place the DECagent 90 on a table or mount the DECagent 90 on a wall. Installation 2–1...

  • Page 16: Connecting The Cables

    Connect the Ethernet ThinWire T-connector to the port 0 BNC network connector. b. Connect the cable from the power supply (H7827-AA) to the 7-pin power connector on the DECagent 90. Connect a terminal or terminal emulator to the front panel asynchronous port.

  • Page 17: For A Backplane Installation

    1. Remove the back cover (if there is one). 2. Install the DECagent 90 in the DEChub 90. Place the lower mounting tab on the back of the DECagent 90, into slot 7 or 8 of the backplane. Rock the DECagent 90 into place.

  • Page 18: Backplane Installation

    Figure 2–2 Backplane Installation Ter minal LJ-01715-TI0 2–4 Installation...

  • Page 19: Standalone Installation

    This section provides detailed procedures for installing a DECagent 90 as a standalone unit. Select a location. The DECagent 90 can be installed on a table top or mounted on a wall. The location should be within 2 meters (6 feet) of a power outlet that supplies the correct voltage.

  • Page 20: Removing The

    Do not make them 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 DECagent 90. 6. Mount the DECagent 90 onto the mounting screws. 2–6 Installation...

  • Page 21: Connect The Cables

    1. Connect the cable from the power supply to the 7-pin power connector on the DECagent 90. Align the power symbol on the dc power connector with the power symbol on the DECagent 90 and push the power connector straight in.

  • Page 22: Backplane Installation

    Mount the DECagent 90 in the backplane. 1. Install the DECagent 90 in the backplane (Figure 2–5). Place the lower mounting tab, located on the back of the DECagent 90, into slot 7 or 8 of the backplane. 2. Rock the DECagent 90 into place. You will hear a click when the DECagent 90 is secured in the slot.

  • Page 23: Power-Up And Reset

    All LEDs on the DECagent 90 turn on either immediately or at initial power- up. After approximately 5 seconds, the network LED turns on with intensity that is proportional to the amount of network activity on the port. Figure 2–5 DECagent 90 Backplane Installation...
  • Page 24 If a minor error occurs during power-up or reset, then the DECagent 90 enters monitor mode. While in monitor mode, error information and logs can be accessed through the RS-232 console port. 2–10 Installation...

  • Page 25: Configuration

    The port 0 ThinWire segment can be as long as 185 meters. A ThinWire segment may have a total of 30 transceivers. Firmware Version The DECagent 90 requires that the firmware be Version 2.3 or higher. Setting a Password You must set a password at initial power-up and after the password reset button is pressed.

  • Page 26: Setting The Ip Address

    1. Connect a terminal or terminal emulator to the port and press the Return key a few times. The DECagent 90 will prompt you to set a password; or if a password is already set, a pound sign (#) appears.

  • Page 27: Terminal Setup

    4. Power cycle the agent after the edits are complete and the bootpd has been started. Terminal Setup Table 3–1 lists the minimum terminal settings that are required to establish a connection to the DECagent 90. Ensure that the following terminal setup parameters are in effect. Table 3–1 Terminal Setup Parameters Parameter...

  • Page 29: Decagent 90 Management

    DECagent 90 module. It also describes how to upgrade the DECagent 90. Console Management To manage the DECagent 90 at the console, connect a terminal, through the front asynchronous port, to the DECagent 90. At initial power-up or after the password reset button is pressed, you will need to set a password.

  • Page 30: Show Community

    Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:31:22 [1] Show Community [13] Show Module [2] Add Community [14] Add Module [3] Remove Community...
  • Page 31 Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:32:25 Show Community Type: Extended DEChub 90 Read-Only Community String: public Read-Write Community String: public...

  • Page 32: Add Community

    DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:32:45 Add Community Enter the read-only community string: Enter the read-write community string: 4–4 DECagent 90 Management...

  • Page 33: Remove Community

    When you choose the Remove Community option, the following appears: Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:42:45 Remove Community Index Community Type Community Strings Standalone Read Only: Public...

  • Page 34: Add Community Trap Addresses

    After you enter Yes or No, you will be asked if you want to remove another community. Note You cannot remove the community in which the DECagent 90 resides. Add Community Trap Addresses Option 4, Add Community Trap Addresses, allows you to add trap addresses to the community trap address table.

  • Page 35: Change Community String

    Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 10:42:45 Change Community String * * * * * * * * * * NOTICE * * * * * * * * * *...

  • Page 36: Change Community Size/Type

    Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 15:42:45 Change Community Size/Type Index Community Type Community Strings Standalone Read Only: Public...

  • Page 37: Set Agent Ip Address

    Change System Information Option 11, Change System Information, allows you to set a node name for the DECagent 90 and change system information related to the MIB-II system group (sysName, sysLocation, and sysContact). The node name should be the same as the <alias>...

  • Page 38: Change Security Configuration

    V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:42:45 Change Security Configuration Change Console Password? <NO> If you do not want to change the console password, then press the Return key.
  • Page 39 If you are connected to the DECagent 90 by a modem, the telephone line is also disconnected. When you choose this option, the following prompt appears: Change Console Timeout? <NO>...

  • Page 40: Show Module

    Show the next module? <YES> If there is only one module in the community, that module is automatically displayed and the following prompt appears: Press RETURN to continue: Figure 4–2 shows a typical Show Module screen. 4–12 DECagent 90 Management...

  • Page 41: Add Module

    Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:42:45 Add Module 1: DECrepeater 90C 7: DECagent 90 13: DECrepeater 90T 2: DECrepeater 90C...
  • Page 42 00 through After you respond to all of the prompts, the module is added to the community, and the following prompt appears: Add another module? <YES> 4–14 DECagent 90 Management...

  • Page 43: Remove Module

    Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:42:45 Remove Module 1: DECrepeater 90C 7: DECagent 90 13: DECrepeater 90T 2: DECrepeater 90C...

  • Page 44: Move Module

    Sets Enabled DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:42:45 Remove Module 1: DECrepeater 90C 7: DECagent 90 13: DECrepeater 90T 2: DECrepeater 90C...

  • Page 45: Connect

    DEChub 90 SNMP Network Management Agent V1.0 Default Community: public [1] Default Slot: 1 Name: DECagent 90 IP Address: 255.255.255.255 System Uptime: 12 09:42:45 Connect Enter the MAC address: To connect to a device, enter the MAC address of the device.

  • Page 46: Loop

    The test packet is then sent back to the originating MAC address. Show Counters Option 20, Show Counters, allows you to view the DECagent 90 MOP counters. When you choose this option, the following appears: Enter the MAC address <xx-xx-xx-xx-xx-xx>: Where <xx-xx-xx-xx-xx-xx>...
  • Page 47 Framing error Single collision Frame too long Multiple collisions System buffer unavailable Unrecognized frame dest’n User buffer unavailable Data overrun Collision detect check fail To exit the Show Counters display, press Ctrl/C or the ESC key. DECagent 90 Management 4–19...

  • Page 48: Restore Factory Settings

    Option 21, Restore Factory Settings, allows you to restore factory settings. It has the same effect as when you power up the DECagent 90 and press the reset button at the same time. When you choose this option, the following warning...

  • Page 49: Exit

    You must then supply the correct password to gain access to the console. Upgrading the DECagent 90 The DECagent 90 can be upgraded in the field (on site). Operational code is stored in flash RAM and is downline loaded using the MOP protocol. A downline load host triggers the DECagent 90 to request a downline load of a specified...

  • Page 50: Downline Loading The Firmware File

    Downline Loading the Firmware File The downline loading is performed through the command console interface (CCI). To access CCI, use the following procedure: 1. Connect a terminal to the front panel connector of the DECagent 90. 4–22 DECagent 90 Management...
  • Page 51 The DECagent 90 is now loaded with its firmware image. The following message appears if there was an error in the load process. Try loading again. Invalid load image... The following message appears if the DECagent 90 could not locate a load host: DENMA -901- Initializing DECagent 90.

  • Page 52: Loading From An Ultrix Host

    This could happen for any of the following reasons: • The load host you set up is not logically connected to the DECagent 90. Make sure that they are on the same LAN and can communicate with each other. •...

  • Page 53: Downline Loading The Firmware File

    Downline Loading the Firmware File The downline loading is performed through CCI. To access CCI, use the following procedure: 1. Connect a terminal to the front panel connector of the DECagent 90. The communication parameters should be set as follows: •...

  • Page 54: Trap-Pdu

    This could happen for any of the following reasons: • The load host you set up is not logically connected to the DECagent 90. Make sure that they are on the same LAN and can communicate with each other. •...

  • Page 55: Troubleshooting

    Chapter 3. 2. Note the fault condition. 3. Isolate the problem. Use Table 5–1 to troubleshoot a standalone DECagent 90. Use Table 5–2 to troubleshoot a DECagent 90 installed in a DEChub 90 backplane. Troubleshooting 5–1...

  • Page 56: Decagent 90 Standalone Troubleshooting

    DECagent 90 Standalone Troubleshooting Use Table 5–1 to troubleshoot a standalone DECagent 90. Table 5–1 Troubleshooting a DECagent 90 Standalone Unit If... Then... Do this... All LEDs are off. Check the ac power Check that the power supply is connection.

  • Page 57: Decagent 90 Backplane Configuration Troubleshooting

    DECagent 90 Backplane Configuration Troubleshooting Use Table 5–2 to troubleshoot a DECagent 90 installed in a DEChub 90 backplane. Table 5–2 Troubleshooting a DECagent 90 in a DEChub 90 Backplane If... Then... Do this... The power LED is off. The DECagent 90 is not Check the power LED on the receiving +12 V.
  • Page 58 Table 5–2 (Cont.) Troubleshooting a DECagent 90 in a DEChub 90 Backplane If... Then... Do this... If the DECagent 90 Replace the DECagent 90. does not turn on in a known good slot, the DECagent 90 is defective. The port 0 network...

  • Page 59: A Specifications And Parts

    • Environmental specifications • Electrical specifications • Console connector pin out The appendix also lists the replacement parts for the DECagent 90. Physical Dimensions The following table lists the physical dimensions of the DECagent 90: Dimension Measurement Height 3.5 cm (1.4 in) Width 28.0 cm (11.0 in)

  • Page 60: Environmental Specifications

    Environmental Specifications The DECagent 90 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 a sealed environment. Operating Environment The following table provides the operating environment specifications:...

  • Page 61: Electrical Specifications

    Electrical Specifications The standalone DECagent 90 has a separate self-contained power supply and a power cord. Power Supply The following table provides the power supply specifications: Specification Value Voltage (domestic) 104 Vac to 128 Vac (nominal 120 Vac) Voltage (international)

  • Page 62: Console Connector Pin Out (Rs-232/Db25

    – – – – – – – Replacement Parts The following table lists the replacement parts and order numbers for the DECagent 90: Replacement Part Order Number DECagent 90 DENMA-MA Power supply, 110/220 Vac H7827-AA Rear cover H0342-AA A–4 Specifications and Parts...

  • Page 63: B Console Messages Introduction

    Console Messages Introduction This appendix describes the informational and error messages that you might receive at the console. Informational Messages The following section lists the informational messages that might appear at the console. Adding module to slot ’nn’. This message appears when you are adding modules to a community and there is only one empty slot.
  • Page 64 Connecting ... This message appears when the agent is attempting to establish a MOP console carrier session to another module via the Connect option. Console session terminated ... This message appears when the console is being exited. Factory settings are being restored ... This message appears when the agent is restoring the original factory settings.
  • Page 65 Restoration of factory settings will destroy ALL the information the DECagent 90 knows about all communities and modules. What will remain is a community of one, a standalone DECagent 90.
  • Page 66 Setting the DECagent 90’s IP address to zero (0) will cause the DECagent 90 to be reset. Upon restart, the DECagent 90 will request its IP address from the bootp server. This message appears when you attempt to set the agent’s IP address to zero (0.0.0.0).

  • Page 67: Error Messages

    You should check the other module to be sure that the MAC address is correct. Duplicate MAC addresses are not allowed. A trap address cannot be the DECagent 90’s IP address. This message appears when you attempt to add a trap address to a community that is the same as the agent’s IP address.
  • Page 68 All slots to which the ’module type’ could be moved are currently occupied. Movement of the ’module type’ is not possible at this time. This message appears when you have attempted to move an agent or bridge within a community and no slot is vacant. Both community strings cannot be null.
  • Page 69 Invalid system name. Please try again. This message appears when an invalid system name has been entered. The accompanying message indicates the reason. You are prompted to re-enter a valid system name. Invalid system location. Please try again. This message appears when an invalid system location has been entered. The accompanying message indicates the reason.
  • Page 70 No default community selected. This message appears after you choose the Show Community option, with the Full option, and you have not selected a default community. No module in this community has a changeable MAC address. This message appears after you choose the Change Module MAC Address option, and the default community does not have any modules whose MAC address can be changed.
  • Page 71 The DECagent 90 must reside only in slot 7 or 8, 15 or 16. This message appears when you attempt to add or move a DECagent 90 to a slot other than slot 7, 8, 15 or 16.
  • Page 72 The trap table for this community is full. This message appears when you have attempted to add a trap address when the trap table is full. The trap table can hold up to 8 trap addresses. There are no trap addresses set for this community. This message appears when you attempt to remove a trap address from a community for which no trap addresses have been set.
  • Page 73 This message appears when you attempt to change the MAC address of a DECagent 90. You cannot remove the community in which the DECagent 90 resides. This message appears when you attempt to remove the community in which the DECagent 90 resides.

  • Page 75: C Mib Groups And Communities

    MIB Groups and Communities Introduction This appendix provides information about the management information base (MIB) groups that are supported by the DECagent 90. It also provides information about the slot table and communities. MIB Groups A MIB is a collection of manageable objects for a given entity. The following standard MIBs are supported by the DECagent 90: •...

  • Page 76: Mib Ii

    System • Interfaces • Address translation (deprecated) • • ICMP • TCP (not supported by the DECagent 90) • • EGP (not supported by the DECagent 90) • Transmission (not supported by the DECagent 90) • SNMP • IETF bridge •...
  • Page 77 Bridge MIB Names dot1dBridge dot1dBase BridgeAddress NumPorts Type PortTable Port IfIndex Circuit DelayExceededDiscards MtuExceededDiscards dot1dStp ProtocolSpecification Priority TimeSinceTopologyChange TopChanges DesignatedRoot RootCost RootPort MaxAge HelloTime HoldTime ForwardDelay BridgeMaxAge BridgeHelloTime BridgeForwardDelay PortTable Port Priority State Enable PathCost DesignatedRoot DesignatedCost DesignatedBridge DesignatedPort ForwardTransitions MIB Groups and Communities C–3...

  • Page 78: Rs-232-Like Mib Group

    RS-232 port with modem signals, that logically support the Interface MIB, Transmission MIB, or Character MIB. The DECagent 90 supports the RS-232-like MIB for the DECserver 90L and the DECserver 90L+ modules. The RS-232-like MIB is a one of a set of MIBs designed for complementary use.

  • Page 79: Character Group

    The most common example of a character port is a hardware terminal port with an RS-232 interface. The DECagent 90 supports the RS-232-like MIB for the DECserver 90L and the DECserver 90L+. Another common hardware example is a parallel printer port, with a Centronics interface.

  • Page 80: Slot Table

    DECagent 90 to access the various modules. The slot table does not, however, refer directly to the DECagent 90 data structure. The slot table refers to module-specific data structures maintained for each module.
  • Page 81 The following list describes the objects in the Dh90 group: • Dh90SlotTable— Not accessible A list of modules installed in the DEChub 90. The number of entries is given in dh90SlotNumber. • Dh90SlotIndex—Read/write The slot number containing the module. • Dh90SlotModuleID—Read/write The type of the module in a slot.
  • Page 82 • Dh90SlotPolling—Read/write The current polling status of the module. If the DECagent 90 is polling this device, a get of this variable will return ’on’, otherwise ’off ’ is returned. Setting this variable to ’off ’ causes the agent to stop polling the device in this slot.

  • Page 83: Communities

    However, for a SET operation, the agent will accept only the read/write string. An SNMP proxy agent, such as the DECagent 90, can translate from SNMP to the native protocol understood by a non-SNMP speaking device. For proxy agents, the manageable entities are often separate and distinct hardware devices.
  • Page 84 64 devices, independent of whether or not they are in a hub. A new community is created in the DECagent 90 by giving it a community type (standalone or DEChub 90), and the read-only and read/write community strings.

  • Page 85: D Documentation And Ordering Information

    Documentation and Ordering Information Introduction This appendix lists documentation that is related to the DECagent 90. It also provides ordering information. Related Documentation You can order the following documents from Digital: Document Title Order Number DEChub 90 Owner’s Manual EK-DEHUB-OM...

  • Page 86: Ordering Information

    FAX: (809) 749–8377 3 Digital Plaza, 1st Street Suite 200 Metro Office Park San Juan, Puerto Rico 00920 Canada Phone: 800–267–6215 Digital Equipment of Canada Ltd. FAX: (613) 592–1946 100 Herzberg Road Kanata, Ontario, Canada K2K 2A6 Attn: DECdirect Sales International —...
  • Page 87 If You Need . . . Call . . . Contact . . . Software DTN: 241–3023 Software Supply Business documentation (508) 874–3023 Digital Equipment Corporation 1 Digital Drive Westminster, MA 01473 Hardware DTN: 234–4325 Publishing & Circulation Services documentation (508) 351–4325 Digital Equipment Corporation FAX: (508) 351–4467...

  • Page 89: Index

    MOP V4, 4–19 Cover, 1–5 CSMA/CD, 1–1 Backplane DEChub 90, 1–1 Backplane connector, 1–5 DC OK display, 1–5 10Base2, 1–1 DECagent 90 BNC network connector, 1–5 input current, A–3 input voltage, A–3 DEChub 90, 1–1 Depth, A–1 Communities, C–9 Description, 1–1 Configuration, 3–1...
  • Page 90 Environment Network activity display, 1–5 operating, A–2 Network connector (BNC), 1–5 Environmental Networks specifications, A–2 CSMA/CD, 1–1 Error messages, B–5 IEEE 802.3, 1–1 Features, 1–1 Operating Firmware version, 3–1 altitude, A–2 dew point, A–2 environment, A–2 relative humidity, A–2 Height, A–1 temperature, A–2 Humidity, A–2 temperature change, A–2...
  • Page 91 Troubleshooting, 5–4 DECagent 90 in DEChub 90 backplane, 5–3 Quick reference installation procedures, standalone DECagent 90, 5–2 2–1 Upgrading Relative humidity, A–2 the DECagent 90, 4–21 Reset password reset, 1–5 to factory settings, 1–5 RS-232 pin out, A–3 Wall mount standalone, 2–5 to 2–8...

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