Digital Equipment DECagent 90 Operation manual

DECagent90
UserInformation
Order Number: EK–DENMA–UI. A01
Revision/Update Information: This is a new manual.
Digital Equipment Corporation
Maynard, Massachusetts

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.
© 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: DEC, DECbridge, DECconnect,
DECmcc, DECnet, DECserver, Digital, LAT, ThinWire, VMS, VAX, and the DIGITAL logo.
Motorola is a registered trademark of Motorola, Inc.
All other trademarks and registered trademarks are the property of their respective holders.
This document was prepared using VAX DOCUMENT, Version 2.1.

Contents
About this Manual ...................................... vii
1 Overview
Introduction . . . ....................................... 1–1
Features ............................................. 1–1
Description ........................................... 1–1
How the DECagent 90 Works. . . ....................... 1–2
Power Supply ...................................... 1–3
LEDs and Connectors . . . ............................... 1–4
Client Communities for the DECagent 90 ................... 1–6
2 Installation
Introduction . . . ....................................... 2–1
Quick Reference Installation Procedures .................... 2–1
For a Standalone Installation . . ....................... 2–1
For a Backplane Installation . . . ....................... 2–3
Standalone Installation . . ............................... 2–5
Select a location. ................................... 2–5
Place the DECagent 90 on a table....................... 2–5
Mount the DECagent 90 on a wall. ..................... 2–5
Connect the cables. . . ............................... 2–7
Backplane Installation . . . ............................... 2–8
Remove the back cover. .............................. 2–8
Mount the DECagent 90 in the backplane. ............... 2–8
Power-Up and Reset.................................... 2–9
iii

3 Configuration
Introduction . . . ....................................... 3–1
Configuration Rules .................................... 3–1
Segment Length .................................... 3–1
Firmware Version................................... 3–1
Setting a Password .................................... 3–1
Setting the IP Address . . . ............................... 3–2
Using the Front Panel Asynchronous Port . ............... 3–2
Modifying the Bootp Table ............................ 3–2
Terminal Setup ....................................... 3–3
4 DECagent 90 Management
Introduction . . . ....................................... 4–1
Console Management ................................... 4–1
Using the Console Interface .............................. 4–1
Console Main Menu .................................... 4–1
Show Community ................................... 4–2
Add Community .................................... 4–4
Remove Community . . ............................... 4–5
Add Community Trap Addresses ....................... 4–6
Remove Community Trap Addresses .................... 4–6
Change Community String............................ 4–7
Change Community Size/Type . . ....................... 4–8
Change Default Community ........................... 4–8
Set Agent IP Address . ............................... 4–9
Enable/Disable SNMP Sets ........................... 4–9
Change System Information........................... 4–9
Change Security Configuration . ....................... 4–10
Show Module ...................................... 4–12
Add Module ....................................... 4–13
Remove Module .................................... 4–15
Move Module ...................................... 4–16
Change Module MAC Address . . ....................... 4–16
Connect . . . ....................................... 4–17
Loop ............................................. 4–18
Show Counters ..................................... 4–18
Restore Factory Settings ............................. 4–20
Reset the Agent .................................... 4–20
Exit ............................................. 4–21
Upgrading the DECagent 90 ............................. 4–21
iv

Loading from a VAX Host ............................ 4–21
VAX Host Node Setup ............................ 4–21
Downline Loading the Firmware File. . ............... 4–22
Loading from an ULTRIX Host . ....................... 4–24
ULTRIX Host Node Setup . . ....................... 4–24
Downline Loading the Firmware File. . ............... 4–25
Trap-PDU . . ....................................... 4–26
5 Troubleshooting
Introduction . . . ....................................... 5–1
DECagent 90 Standalone Troubleshooting ................... 5–2
DECagent 90 Backplane Configuration Troubleshooting . . ...... 5–3
A Specifications and Parts
Introduction . . . ....................................... A–1
Physical Dimensions ................................... A–1
Environmental Specifications ............................. A–2
Operating Environment .............................. A–2
Shipping Environment ............................... A–2
Electrical Specifications . . ............................... A–3
Power Supply ...................................... A–3
Input Voltage ...................................... A–3
Console Connector Pin Out (RS-232/DB25) . . . ............... A–4
Replacement Parts ..................................... A–4
B Console Messages
Introduction . . . ....................................... B–1
Informational Messages . . ............................... B–1
Error Messages ....................................... B–5
C MIB Groups and Communities
Introduction . . . ....................................... C–1
MIB Groups . . . ....................................... C–1
MIBII ........................................... C–2
Bridge Group ...................................... C–2
RS-232-Like MIB Group ............................. C–4
Character Group ................................... C–5
Slot Table ............................................ C–6
Communities . . ....................................... C–9
v

D Documentation and Ordering Information
Introduction . . . ....................................... D–1
Related Documentation . . ............................... D–1
Ordering Information ................................... D–2
Index
Figures
1–1 Sample DECagent 90 Configuration............... 1–2
1–2 How the DECagent 90 Communicates with
Modules .................................... 1–3
1–3 The DECagent 90 Module ...................... 1–4
2–1 Connecting the Cables . . ....................... 2–2
2–2 Backplane Installation . . ....................... 2–4
2–3 Removing the Back Cover ...................... 2–6
2–4 Mounting the DECagent 90 on a Wall ............. 2–7
2–5 DECagent 90 Backplane Installation .............. 2–9
4–1 Show Community Screen ....................... 4–4
4–2 Show Module Screen . . . ....................... 4–13
Tables
1–1 DECagent 90 LEDs and Connectors .............. 1–5
3–1 Terminal Setup Parameters ..................... 3–3
5–1 Troubleshooting a DECagent 90 Standalone Unit .... 5–2
5–2 Troubleshooting a DECagent 90 in a DEChub 90
Backplane . . . ............................... 5–3
vi

About this Manual
Introduction
This manual describes how to install, configure, operate, and troubleshoot the
DECagent 90 module. The DECagent 90 is an Ethernet network management
agent that can be used in a standalone operation or in the DEChub 90 Ethernet
backplane.
Organization
This manual contains five chapters and four appendices.
• 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.
• Chapter 4 describes how to operate the DECagent 90 on a network, using the
console main menu options.
• Chapter 5 contains basic troubleshooting information.
• Appendix A contains system specifications and a parts list.
• Appendix B describes informational and error messages you might receive at
the console.
• Appendix C provides information about management information base (MIB)
groups, the slot table, and communities.
• Appendix D contains information about related documentation and ordering.
vii

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.
nA lowercase italic nindicates the generic use of
a number. For example, 19nn indicates a 4-digit
number in which the last 2 digits are unknown.
! A number in a black circle in text refers to
the corresponding number in an accompanying
illustration.
italic type Italic type emphasizes important information,
indicates variables, and indicates complete titles of
manuals.
commands Commands are shown in uppercase or lowercase
letters. For the VMS operating system, you can
enter commands in either uppercase or lowercase
letters. For the ULTRIX operating system,
commands must be entered as indicated in the
examples.
monospaced type Text that the system displays on the screen is
shown in monospaced type.
bold monospaced type Bold monospaced type in examples indicates user
input.
Return or Enter The Return and Enter keys perform the same
function.
Return A key name enclosed in a box indicates that you
press that key. In this example, you would press
the Return key.
Ctrl/xCtrl/xindicates that you hold down the Ctrl key
while you press another key (indicated here by x).
viii

1
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
• Can be installed as a standalone module or in a DEChub 90 backplane
• Needs no downline load at power-up
• Is downline loadable for firmware upgrades (MOP protocol)
• Can be directly managed through SNMP
• Stores MIB settings in battery-backed RAM
• Provides out-of-band console port
• Allows hot swap of modules
Description
The DECagent 90 is a network management agent designed for the IEEE 802.3
CSMA/CD networks. The DECagent 90 uses a Simple Network Management
Protocol (SNMP) agent. The DECagent 90 has one ThinWire port and one
asynchronous RS-232 port. The ThinWire port complies with the IEEE 802.3
standard for 10Base2 networks.
The DECagent 90 is a self-contained module that uses a Motorola 68000
central processing unit (CPU). The DECagent 90 can operate in a standalone
configuration with a dual 5- and 12-volt power supply, or in a DEChub 90
Ethernet backplane.
Overview 1–1

Figure 1–1 shows a typical configuration of the DECagent 90 in an Ethernet local
area network (LAN).
Figure 1–1 Sample DECagent 90 Configuration
Workstation Workstation DECserver
DECbridge 90
Work Group Bridge
BackboneEthernet
Computer 1 Computer 2 Server
PC
LJ-01458-TI0
ThinWire SegmentWork Group
DECagent 90DECrepeater 90T DECserver 90L
Work Group
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
accepts SNMP messages on behalf of its client modules, sends an appropriate
command to the queried client module, and waits for a response from the client
module. When it receives a response from the client module, the DECagent 90
sends an SNMP packet to the querying Network Operations Center (NOC).
The DECagent 90 has a single IP address. It implements the protocols required
for SNMP-based proxy access. The following protocols are used:
ARP
IP
UDP
SNMP
BootP
1–2 Overview

Figure 1–2 shows how the DECagent 90 communicates with the other modules.
Figure 1–2 How the DECagent 90 Communicates with Modules
DECserver 90L
DECbridge 90
DECrepeater
Backplane
Management Bus
Slot, Port
MOP/CC
MAC Address
RBMS
DECserver 90TL
DECagent 90
SNMP
IP, Community
NMS
Username:_________________________
Password:__________________________
Okay Erase
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.
Overview 1–3

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-D120
REDUCE .45
ORG
7
3
2
1
9
8
10
6
5
4
LJ-01459-TI0
1–4 Overview

Table 1–1 DECagent 90 LEDs and Connectors
! DC OK—Monitors the voltage.
On: The +12.0 Vdc voltage is normal.
Off: The voltage is abnormal (as when a power failure occurs).
"
Self-test OK indicator—Indicates self-test has passed.
On: Self-test completed successfully.
Off: Self-test is not complete or has failed.
#
Backbone port OK indicator—Monitors the network port.
On: The network port is properly terminated.
Off: The network port is not properly terminated.
Flashing: Flashing at a 1-second interval with the asynchronous
serial port status LED indicates that an IP address has not been set.
$ Asynchronous serial port (RS-232) status LED—Monitors network
activity. This LED will also flicker with auto-baud.
On: Port is operational (DSR active).
Flicker: Port or network has activity.
Off: Port or network is not operational.
Flashing: Flashing at a 1-second interval with the backbone port OK
indicator, indicates that an IP address has not been set.
% Asynchronous serial port (RS-232) connector— Provides an
interface to the DECagent 90 through a terminal or terminal
emulation program.
&
Reset switch—Resets the agent back to factory settings. Nullifies
the password for the DECagent 90. The agent is accessible without a
password until a new password is defined.
' Port 0 network connector (BNC)— Connects the agent to the
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. Not used when the agent is installed in the DEChub
90 backplane.
+> Back cover—Used with standalone units only. It covers the
backplane connector and mounting assembly.
Overview 1–5

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.
The community string name can be up to 32 characters long. There are two
community strings per community, a read-only string and a read/write string.
A community string consists of any printable characters and are case sensitive.
Here are two examples of naming schemes:
MyHUBFloor3Room27
COMM_LAB_HUB_3
For more information about communities, refer to Appendix C.
1–6 Overview

2
Installation
Introduction
This chapter describes how to install the DECagent 90 as a standalone unit or in
a DEChub 90 backplane.
The chapter provides quick reference sections which provide brief descriptions
of the installation procedures. The chapter also includes detailed installation
procedures.
Quick Reference Installation Procedures
This section provides an overview of the standalone and backplane installation
procedures. See the Standalone Installation and Backplane Installation sections
for detailed procedures.
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

3. Connect the cables (Figure 2–1).
a. 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. "
c. Connect a terminal or terminal emulator to the front panel asynchronous
port. #
This connection allows console management.
Figure 2–1 Connecting the Cables
PJ,D120
SCALE 46% 85%
LJ-01714-TI0
Terminal
2
3
1
2–2 Installation

4. Configure the DECagent 90 (See Chapter 3).
a. Set the password.
b. Set the IP address.
c. Add modules (optional).
For a Backplane Installation
This section provides an overview of the backplane installation procedure. See
the Backplane Installation section for detailed instructions.
Note
Only one DECagent 90 can be installed in a DEChub 90 backplane.
To install and enable the DECagent 90 in a DEChub 90 backplane (Figure 2–2),
you need to
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.
3. Connect a terminal or terminal emulator to the front panel asynchronous port
and press the Return key several times. #
The console prompt appears.
4. Configure the DECagent 90 (See Chapter 3).
a. Set the password.
b. Set the IP address.
c. Ensure that the community is greater than 1.
d. Add modules (optional).
Installation 2–3

Figure 2–2 Backplane Installation
LJ-01715-TI0
Terminal 3
2
1
2–4 Installation

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.
Place the DECagent 90 on a table.
If you place the DECagent 90 on a table top, follow the environmental
specifications listed in Appendix A.
Mount the DECagent 90 on a wall.
To mount the DECagent 90 on a wall, use the following procedure:
1. Remove the back cover of the DECagent 90, if there is one (Figure 2–3).
a. Insert a small screwdriver into the top mounting hole on the cover.
b. Lift up on the latch with the screwdriver, then pull the cover away and
down from the top of the unit.
Installation 2–5

Figure 2–3 Removing the Back Cover
LJ-00320-TI0
2. Use the mounting holes on the back cover to determine the placement for the
mounting screws on the wall (Figure 2–4).
3. Secure the back cover to the wall using the mounting screws.
The screws should be tight enough to provide resistance if you try to remove
the back cover from the wall. 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