Motorola BSR 2000 Reference guide

BSR 2000 SNMP

MIB Reference

Guide

526362-001-00

Release 1.0

MGBI

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526362-001-00

Release 1.0

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Published: 1/06

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526362-001-00 MGBI vii

Contents

Preface

Scope ............................................................................................................................................. ix

Audience........................................................................................................................................ix

Documentation Set ........................................................................................................................ix

Conventions.................................................................................................................................... x

Notes, Cautions, Warnings ............................................................................................................ xi

If You Need Help.......................................................................................................................... xii

1 Introduction to the Simple Network Management Protocol

Overview .....................................................................................................................................1-1

About SNMP MIBs .....................................................................................................................1-2

SNMP Commands.......................................................................................................................1-3

How a MIB is Organized.............................................................................................................1-3

Defining MIB Objects ......................................................................................................1-4

Obtaining SNMP MIB Archive Files for the BSR......................................................................1-5

2 Standard MIB Support

Overview .....................................................................................................................................2-1

Accessing MIBs with RFC Numbers ...............................................................................2-1

Accessing MIBs through CableLabs ................................................................................2-1

MIB II..........................................................................................................................................2-2

Transmission ...............................................................................................................................2-5

SNMP ..........................................................................................................................................2-6

Experimental ...............................................................................................................................2-7

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viii MGBI 526362-001-00

3 Motorola Private MIBS

Overview .....................................................................................................................................3-1

4MIB Traps

Overview .....................................................................................................................................4-1

Accessing MIB traps with a DOCSIS Name....................................................................4-1

Accessing MIB traps with RFC Numbers ........................................................................4-2

DOCSIS and Standard MIB Trap Information............................................................................4-3

Motorola Private Trap Information .............................................................................................4-5

Trap Severity Levels ...................................................................................................................4-8

Private Traps and Their Severity Levels ........................................................................4-10

Enabling or Disabling Traps......................................................................................................4-13

Filtering Traps ...........................................................................................................................4-14

5 Using a MIB Browser to Access MIB Variables

Overview .....................................................................................................................................5-1

About MIB Browsers ..................................................................................................................5-2

Contacting the Device .................................................................................................................5-2

Browsing the MIB Tree...............................................................................................................5-3

SNMP Get/Get Next....................................................................................................................5-5

SNMP Set....................................................................................................................................5-6

Compiling and Importing New SNMP MIBs .............................................................................5-6

Sample Tasks...............................................................................................................................5-6

Accessing MIB Variable Information...............................................................................5-7

Sample Task .......................................................................................................5-7

Changing MIB Variables ................................................................................................ 5-11

Sample Task ..................................................................................................... 5-11

Index

526362-001-00 MGBI ix

Preface

Scope

This document provides descriptions of the standard SNMP and private MIBs

supported by the Motorola™ Broadband Services Router™ 2000 (BSR 2000™). It

also provides a tutorial on how to “walk” the MIBs using an SNMP MIB browser and

provides example tasks that can be performed using the SNMP or private MIBs.

Audience

This document is for use by those persons who will configure and manage the

BSR 2000™ product. Only trained service personnel should configure and manage

the BSR 2000.

Documentation Set

The following documents comprise the BSR 2000 documentation set:

■ BSR 2000 Command Reference Guide

This document contains the Command Line Interface (CLI) commands for

managing, configuring, and maintaining the BSR 2000.

■ BSR 2000 Configuration and Management Guide

This document provides the instructions and procedures for configuring and

managing the BSR 2000.

■ BSR 2000 Installation Guide

This document describes how to install the BSR 2000 product.

BSR 2000 SNMP MIB Reference Guide Release 1.0

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■ BSR 2000 Release Notes

These documents provide information about features not described or incorrectly

documented in the main documentation set; known problems and anomalies;

product limitations; and problem resolutions.

■ BSR Troubleshooting Guide

This document provides instructions and procedures for troubleshooting the BSR

product.

■ BSR 2000 Quick Start Guide

This document provides basic tasks used to get the BSR 2000™ out of the box,

running, connected to the network, and operational.

Conventions

This document uses the conventions in the following table:

Convention Example Explanation

angle brackets < > ping <ip-address>

ping 54.89.145.71

Arguments in italic and enclosed by angle

brackets must be replaced by the text the

argument represents. In the example,

54.89.345.71 replaces <ip-address>. When

entering the argument, do not type the angle

brackets.

bar brackets [ ] disable [level] Bar brackets enclose optional arguments. The

example indicates you can issue the disable

command with or without specifying a level.

Some commands accept more than one

optional argument. When entering the

argument, do not type the bar brackets.

bold text cable relay-agent-option Boldface text must be typed exactly as it

appears.

brace brackets {} page {on | off} Brace brackets enclose required text. The

example indicates you must enter either on or

off after page. The system accepts the

command with only one of the parameters.

When entering the text, do not type the brace

brackets.

Release 1.0 Preface

526362-001-00 MGBI xi

Notes, Cautions, Warnings

The following icons and associated text may appear in this document.

italic text boot system <filename> Italic type indicates variables for which you

supply values in command syntax descriptions.

It also indicates file names, directory names,

document titles, or emphasized text.

screen display Wed May 6 17:01:03

2000

This font indicates system output.

vertical bar | page {on | off} A vertical bar separates the choices when a

parameter is required. The example indicates

you can enter either command:

page on or page off

When entering the parameter, do not type the

vertical bar or the brace brackets.

Note: A note contains tips, suggestions, and other helpful information, such

as references to material not contained in the document, that can help you

complete a task or understand the subject matter.

Caution: The exclamation point, within an equilateral triangle, is intended to

alert the user to the presence of important installation, servicing, and

operating instructions in the documents accompanying the equipment.

Warning: This symbol indicates that dangerous voltages levels are present

within the equipment. These voltages are not insulated and may be of

sufficient strength to cause serious bodily injury when touched. The symbol

may also appear on schematics.

Convention Example Explanation

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If You Need Help

If you need assistance while working with the BSR 2000, contact the Motorola

Technical Response Center (TRC):

The TRC is on call 24 hours a day, 7 days a week. In addition, Motorola Online offers

a searchable solutions database, technical documentation, and low-priority issue

creation and tracking.

Inside the U.S. 1-888-944-HELP

1-888-944-4357

Outside the U.S. +.215-323-0044

Motorola Online http://businessonline.motorola.com

526362-001-00 MGBI 1-1

1

Introduction to the Simple

Network Management

Protocol

Overview

The Simple Network Management Protocol (SNMP) is described in the following

sections:

■ About SNMP MIBs

■ SNMP Commands

■ How a MIB is Organized

■ Obtaining SNMP MIB Archive Files for the BSR

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About SNMP MIBs

Request for Comments (RFC) 1155 defines the Structure of Management

Information (SMI) framework for using SNMP to control different types of

information. SMI places objects as nodes in an object tree. The object tree groups

logically related objects into subtrees. Each of these subtrees is

called a

Management Information Base (MIB).

A MIB is a database maintained by the device that stores all of its known management

information. Each individual element of information in the MIB is called an Object. A

MIB is much like an information warehouse with specific floors, aisles and racks

stocked with inventory.

Request for Comments (RFC) MIBs and Internet Drafts are written by Internet

Engineering Task Force (IETF) working groups and are available for public use and

are often referred to as "Standard MIBs". Other MIBs have been developed by private

organizations specifically for their products and are often referred to as "Private" or

"Proprietary" MIBs.

The BSR supports the following Standard and Private MIBs:

■ Refer to Standard MIB Support on page 2-1 for a list of Standard MIBs supported

by the BSR.

■ Refer to Motorola Private MIBS on page 3-1 for a list of Private MIBs supported

by the BSR.

An SNMP agent is used to communicate information between a remote management

system and the information database on a device. An SNMP agent accomplishes this

by retrieving information from a MIB and storing information to a MIB

.

SNMP management follows this model:

■ MIBs located on the SNMP network management station describe the

information that is relayed from the SNMP agents.

■ The SNMP network management station or application can send queries to each

SNMP agent.

■ Each SNMP agent collects information about its device and provides that

information to the SNMP network management station. The agent process acts as

a server in a typical client-server model.

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SNMP Commands

Table describes the SNMP Get, GetNext, and Set commands, as defined in

RFC 1157, that are supported by the SNMP agent software on the BSR:

How a MIB is Organized

Because networking devices are made by a variety of manufacturers they must all be

able to communicate with one another. The Internet standards organization requires

that each network device organize its management information according to a

pre-defined tree format. This tree structure branches out from the Internet layer into

several subtrees, with each subtree organized into branches (groups of related

information) and leaves (the individual pieces of information, or objects). Among

these subtrees is an Enterprises subtree, in which private vendors can apply to the

Internet Assigned Numbers Authority for a branch in which to store management

information (or objects) specific to their products.

Each layer of this tree is numerically encoded, so that each group and object is

identified by a unique number known as an Object Identifier (OID). This identifier is

a path to the information stored as the object’s value, and provides the means by

which the SNMP agent is able to locate the object in a device’s MIB. An ASCII name

is also assigned to each branch or OID, for convenience in identifying a management

object. For example, the MIB II object ipForwarding is identified as follows:

Numeric OID: 1.3.6.1.2.1.4.1

ASCII string: iso/org/dod/internet/mgmt/mib-2/ip/ipForwarding

Table 1-1 SNMP Commands

Command Description

Get Retrieves the value of a specific object from

one of the supported MIBs.

GetNext Traverses the MIB tree to retrieve the next

object’s management information.

Set Modifies the values of MIB objects. The BSR

2000 private MIBs and several objects in the

standard MIBs allow you to configure the

BSR 2000 from an SNMP management

station on the network.

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Some objects may occur multiple times for a single device. Objects of this type are

called tabular objects and are organized in tables. Each occurrence of a tabular object

is called an instance, and each instance also numerically encoded. For example, if you

were querying a two-port bridge’s interface table, there would be two instances

(values) returned for each object in the table (one for each port), and each instance

would have a unique instance value appended to the object’s OID.

Defining MIB Objects

MIB objects represent data that the device can retrieve or configuration information

that can be modified.

■ RFC 1155 (Structure and Identification of Management Information for TCP/

IP-based Internets) describes the layout and encoding of exchanged data

objects. The SMI uses the ISO standard ASN.1 (Abstract Syntax Notation

One) to define a method for describing a hierarchical name space for managed

information.

■ RFC 1212 (Concise MIB Definitions) is an easier-to-read form used in most

standard MIBs today. It defines the private enterprise MIB.

A MIB object is defined and identified by the following:

OBJECT_TYPE The object’s ASN.1 (Abstract Syntax Notation.1) defined

name and type.

SYNTAX How the data represented by this object is structured: Integer,

Octet String, Object Identifier, Null, Sequence, Sequence of,

IpAddress, NetworkAddress, Counter, Gauge, TimeTicks,

Opaque, or some other user-defined data type.

ACCESS The level of management access available for this specific

object: read-only (instances of the object may be read, but not

set), read-write (instances of the object may be read or set),

write-only (instances of the object may be set but not read), or

not-accessible (instances of the object may not be read or

set). Note that this does not designate the level of access

provided by the community name you used to contact the

device, but the maximum level of access available for the

object by definition.

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The following is an example of the MIB object ifNumber which is part of the

Interfaces group of RFC 1213 (Management Information Base for Network

Management of TCP/IP-based internets:MIB-II.)

ifNumber OBJECT-TYPE

SYNTAX INTEGER

ACCESS read-only

STATUS mandatory

DESCRIPTION

"The number of network interfaces (regardless of

their current state) present on this system.”

::= { interfaces 1 }

Obtaining SNMP MIB Archive Files for the BSR

Contact Motorola Technical Response Center (TRC) to obtain the SNMP MIB

archive files for use with the BSR 2000 Release 4.1 software. Refer to If You Need

Help on page xii for more information.

: Indicates whether a managed device is required to implement

this object in its MIB. A status of mandatory indicates that the

device must use this object (by convention, all MIBs adhering

to the Internet-standard contain only mandatory objects); a

status of optional indicates that the device may implement this

object (by Internet-standard MIB convention, this is used to

denote objects within an experimental MIB); and a status of

obsoleted indicates that the device need no longer implement

this object, as it is no longer meaningful in an

Internet-standard MIB.

DESCRIPTION A brief description of the management information provided by

this object.

::= The variable name of the object, in the form OBJECT TYPE

OBJECT IDENTIFIER fragment.

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2

Standard MIB Support

Overview

This chapter gives instructions on how to access standard MIBs and provides

information for the standard MIBs supported by the BSR 2000:

Accessing MIBs with RFC Numbers

Follow these steps to access MIBs with Request for Comments (RFCs) numbers:

1. Click on the blue World Wide Web link to access an RFC from the Internet

Engineering Task Force (IETF) Web site:

http://www.ietf.org/rfc.html

2. Find the RFC number and enter it in the RFC number: box and click the go

button. The RFC displays as a text document.

Accessing MIBs through CableLabs

Follow these steps to access MIB names for the MIB-II group through CableLabs:

1. Click on the blue World Wide Web link to access the CableLabs Web site:

http://www.cablelabs.com

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2. Find the CableLabs MIB name in and enter it in the Search field and click the

Search button. The document displays as a PDF in your Web browser.

MIB II

Table 2-1 provides a list of MIB Request for Comments (RFCs) and/or MIB names

for the MIB-II group, which includes their corresponding Internet Engineering Task

Force (IETF) working groups and document titles:

Table 2-1 Supported MIB II Groups

RFC/MIB Name IETF Working Group Title

RFC 1213

RFC1213-MIB

SNMP Management Information Base for Network

Management of TCP/IP-based internets: MIB-II

RFC 1493

BRIDGE-MIB

Bridge Sub-Working Group

of the SNMP Working

Group.

Definitions of Managed Objects for Bridges

RFC 1657

BGP4-MIB

BGP Definitions of Managed Objects for the Fourth Version

of the Border Gateway Protocol (BGP-4) using SMIv2

RFC 1724

RIPv2-MIB

RIP-II Routing Information Protocol Version 2 MIB

Extension.

RFC 1850

OSPF-MIB

OSPF OSPF Version 2 Management Information Base

RFC 1870

SMTP Size

Declaration

Standards Track SMTP Service Extension for Message Size

Declaration

RFC 2013

UDP-MIB

SNMPv2 SNMPv2 Management Information Base for the User

Datagram Protocol using SMIv2

RFC 2096

IP-FORWARD-MIB

OSPF IP Forwarding Table MIB

RFC 2213

INTEGRATED-SERV

ICES-MIB

Integrated Services Integrated Services Management Information Base

using SMIv2

RFC 2493

PerfHist-TC-MIB

AToMMIB and TrunkMIB Textual Conventions for MIB Modules Using

Performance History Based on 15 Minute Intervals

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