Nortel Networks 5399, 8000 User Manual

Version 8.0

Part No. 300861-C Rev. 00
December 1999

4401 Great America Parkway
Santa Clara, CA 95054

Nortel Networks 5399 and
8000 Access Switch SNMP
MIB Reference

Copyright © 1999 Nortel Networks

All rights reserved. Printed inthe USA. December 1999.
The information in this document is subject to change without notice. The statements,configurations, technical data,

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ii 300861-C Rev. 00

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iv 300861-C Rev. 00

Contents

Preface

Before You Begin .............................................................................................................. ix

Text Conventions ...............................................................................................................x

Acronyms ..........................................................................................................................xii

Hard-Copy Tec hnical Manuals . ........................................................................................ x ii i

How to Get Help ..............................................................................................................xiii

Chapter 1
Simple Network Management Protocol (SNMP)

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

SNMP Commands .......................................................................................................... 1-2

Using SNMP set to Send Commands to the RAC ...................................................1-3

Internet Group Management Protocol (IGMP) .........................................................1-3

Chapter 2
Configuring the RAC for SNMP

Configuring the SNMP Agent . . .......................................................................................2-1

Defining the Community String ................................................................................ 2-3

Defining Trap Hosts and Traps .................................................................................2-4

Defining the Contact String ......................................................................................2-5

Defining the Location String ..................................................................................... 2-5

Defining the disabled_modules Parameter ..............................................................2-5

Defining the allow_snmp_sets Parameter ................................................................2-6

Configuring BootP Relay ..........................................................................................2-6

Chapter 3
Private MIBs and Standard MIB Support

StandardRFC MIBs .......................................................................................................3-1

MIB Object Hierarchy ......................................................................................................3-2

Understanding MIB Objec ts ............................................................................................3-3

300861-C Rev.00 v

Restrictions on Standard MIBs .......................................................................................3-3

RFC 1213 MIB-II Restrictions ..................................................................................3-3

RFC 1243 AppleTalk MIB Restrictions .....................................................................3-4

RFC 1643 Ethernet MIB Res trictions .......................................................................3-5

RFC 1724 RIP V2 MIB Restri ctions .........................................................................3-6

RFC 1406 DS1 MIB Restrictions .............................................................................3-6

Private Enterprise MIBs .................................................................................................. 3-7

Location of Private MIB Files ................................................................................... 3-7

Private MIB Filenames .............................................................................................3-7

Chapter 4
Call Management

Active Call Statistics .......................................................................................................4-1

Active Modem Calls .................................................................................................4-2

Active MP Calls ........................................................................................................4-2

Port Action Table ......................................................................................................4-2

Call History Statistics ......................................................................................................4-3

Modem Call History Statistics .................................................................................. 4-3

MP Call History Statistics .........................................................................................4-4

Internet Group Management Protocol (IGMP) ................................................................4-4

Modem MIBs ..................................................................................................................4-4

Modem Identification ................................................................................................4-4

Modem Control .........................................................................................................4-4

Modem Statistics ......................................................................................................4-5

WANStatistics ................................................................................................................4-5

Chapter 5
Error Handling

Error Counters ................................................................................................................5-1

Thresholds ......................................................................................................................5-4

PPP Trace-to-Syslog ......................................................................................................5-5

Trap Configuration .......................................................................................................... 5-6

Proprietary Traps ......................................................................................................5-7

Chapter 6
Troubleshooting

Index

vi 300861-C Rev. 00

Tables

Table 1-1. Supported SNMP Commands .................................................................1-2

Table 2-1. Supported Standard SNMP Traps ...........................................................2-5

Table 3-1. Standard MIBs Supp orted by the RAC ....................................................3-2

Table 3-2. RFC 1213 MIB-II Objects .........................................................................3-4

Table 3-3. RFC 1243 AppleTalk ................................................................................ 3-5

Table 3-4. RFC 1643 Ethernet MIB Objects .............................................................3-6

Table 3-5. RFC 1724 RIP V2 MIB Objects ................................................................3-6

Table 3-6. RFC 1406 DS1 MIB Objects ....................................................................3-7

Table 3-7. Private MIB Filenames . ............................................................................3-8

Table 3-8. Prefixes for MIB Object Names Related to the RAC ................................3-9

Table 5-1. Current Error Counter MIBs .....................................................................5-2

Table 5-2. Interval Error Counter M IBs .....................................................................5-3

Table 5-3. Total Error Counter MIBs .........................................................................5-4

Table 5-4. Threshold MIBs ........................................................................................ 5-5

Table 5-5. Proprietary Traps .....................................................................................5-7

300861-C Rev.00 vii

If you are responsible for developing custom applications for configuring or
managing a Nortel Networks 5399 Access Switch or 8000 Access Switch
(formerly known as Model 5399 and Model 8000 Remote Access Concentrator
(RAC)) using SNMP, you need to read this guide.

Note: The Access S witch product na me appears only on the title page.

Whenever the term Remote Access C oncentrator (RAC) appears in this
document, it refers to the Nortel Networks 5399 or 8000 Access Switch.

Before You Begin

This guide is intended for network administrators and assumes that you have:

Preface

• Basic familiarity with network administration

• An understanding of the basic concepts of Integrated Services Digital
Network (ISDN) and C hannelized T1/E1.

300861-C Rev.00 ix

Nortel Networks 5399 and 8000 Access Switch SNMP MIB Reference

Text Conventions

This guide uses the following text c onventions:

angle brackets (< >) Indicate that you choose the text to enter based on the

description inside the brackets. Do not type the
brackets when entering the command.
Example: If the command syntax is:

ping <

ip_address

ping 192.32.10.12

>, you enter:

bold text

Indicates command names and options and text that
you need to enter.
Example: Enter show ip {al erts | routes}.
Example: Use the dinfo command.

braces ({}) Indicate required elements in syntax descriptions

where there is more than one option. You must choose
only one of the options. Do not type the braces when
entering the command.
Example: If the command syntax is:

show ip {alerts | routes}, you must enter either:
show ip alerts or show ip routes, but not both.

brackets ([ ]) Indicate optional elements in syntax descriptions. Do

not type the brackets when entering the command.
Example: If the command syntax is:

show ip interfaces [-alerts], you can enter either:
show ip interfaces or show ip interfaces -alerts.

x 300861-C Rev. 00

Preface

ellipsis points (...) Indicate that you re peat the last element of the

command as needed.
Example: If the command syntax is:

ethernet/2/1 [<
ethernet/2/1 and as many parameter-value pairs as

parameter><value

>] ..., you enter

needed.

italic text Indicates file a nd directory names, new terms, book

titles, and variables in command syntax descriptions.
Where a variable is two or more words, the words are
connected by an underscore.
Example: If the command syntax is:

show at <

valid_route

valid_route

>

is one variable and you substitute one value

for it.

screen text

Indicates system output, for example, prompts and
system messages.

Example: Set Trap Monitor Filters

separator ( > ) Shows menu paths.

Example: Protocols > IP identifies the IP optionon the
Protocols menu.

vertical line (

| ) Separates choices for command keywords and

arguments. Enter only one of the choices. Do not type
the vertical line when e ntering the command.
Example: If the command syntax is:

show ip {alerts | routes}, you enter either:
show ip alerts or show ip routes, but not both.

300861-C Rev.00 xi

Nortel Networks 5399 and 8000 Access Switch SNMP MIB Reference

Acronyms

This guide uses the following acronyms:

AUI attachment unit interface
BootP Bootstrap Protocol
BRI basic rate interface
CSMA/CD carrier sense multiple access/collision detection
DLCMI Data Link Control Management Interface
HDLC High-level Data Link Control
HTTP Hypertext Transfer Protocol
IGMP Internet Group Management Protocol
IP Internet P rotocol
ISDN Integrated Services Digital Network
ISO International Organization for Standardization
ITU-T International Telecommunication

Union-Telecommunication Standardization Sector

(formerly CCITT)
MAC media access control
MAU media access unit
MDI-X medium dependent interface crossover
NBMA nonbroadcast multi-access
OSPF Open Shortest Path First
PPP Point-to-Point Protocol
RAC Remote Access Concentrator
RADIUS Remote Authentication Dial-In User Service
SMDS Switched Multimegabit Data Service
SNMP Simple Network Management Protocol
STP shielded twisted pair
TPE twisted pair Ethernet
WAN Wide Area Network

xii 300861-C Rev. 00

Hard-Copy Technical Manuals

You can print selected technical manuals and release notes free, directly from the
Internet. Go to support.baynetworks.com/library/tpubs/. Find the product for
which you need documentation. Then locate the specific category and model or
versionfor your hardware or software product. Using Adobe Acrobat Reader,you
can open the manuals and release notes, search for the sections you need, and print
them on m ost standard printers. You can download Acrobat Reader free from the
Adobe Systems Web site, www.adobe.com.

You can purchase selected documentation sets, CDs, a nd technical publications
through the collateral catalog. The catalog is located on the World Wide We b at

support.baynetworks.com/catalog.html a nd is divided into sections arranged

alphabetically:

• The “CD ROMs” section lists available CDs.

• The “Guides/Books” section lists books on technical topics.

• The “Technical Manuals” section lists available printed documentation sets.

How to Get Help

Preface

If you purchased a service contract for your Nortel Networks product from a
distributor or authorized r eseller, contact the technical support staff for that
distributor or reseller for assistance.

If you purchased a Nortel Networks service program, contact one of the following
Nortel Networks Technical Solutions Centers:

Technical Solutions Center Telephone Number

Billerica, MA 800-2LANWAN (800-252-6926)
Santa Clara, CA 800-2LANWAN (800-252-6926)
Valbonne, France 33-4-92-96-69-68
Sydney, Australia 61-2-9927-8800
Tokyo, Japan 81-3-5402-7041

300861-C Rev.00 xiii

Simple Network Management Protocol (SNMP)

This chapter describes the Simple Network Management Protocol (SNMP) and
the SNMP a gent provided by the RAC. This chapter includes the following
sections:

• SNMP Protocol Overview

• SNMP Commands

SNMP Overview

SNMP provides an alternative means of managing the RAC. SNMP ope rates over
the UDP (Unreliable Datagram Protocol), which is part of the TCP/IP protocol
suite.

Chapter 1

• The Structure of M anagement Information (SMI), defined in RFC 1155, is a
framework that describes what kinds of information can be manipulated using
SNMP. Using SMI, objects are placed as nodes in an object tree. The object
tree groups logically related objects into subtrees. Ea ch of these subtrees is
called a MIB (Management Information Base).

• MIBs located on the SNMP Network Management S tation describe the
information that is relayed from the agents.

• The SNMP network management station or application can send queries to
the SNMP a gent located in each RAC.

• Each SNMP agent c ollects information about its RAC and provides that
information to the Network Management Station. The agent process acts as a
server in a typical client-server model.

300861-C Rev.00 1-1

SNMP Commands

The SNMP a gent software in the RAC supports the SNMP commands get,
get-next, set,andtrap a s defined in RFC 1157. Table 1-1 describes these

commands.

Table 1-1. Supported SNMP Commands

Action Description

get Retrieves the value of a specific object from one of the supported

get-next Traverses the MIB tree to retrieve the next object’s management

set Modifies the values of MIB objects. The RAC pri vate enterprise

trap Asynchronously reports significant events.

Nortel Networks 5399 and 8000 Access Switch SNMP MIB Reference

MIBs.

information.

MIB and several objects in the standard MIBs allow you to
configure the RAC from an SNMP management stationon the
network rather than using the na utility or CLI admin command.

When the allow_snmp_sets parameter is e nabled, the RAC accepts SNMP set
commands from IP host addresses and communities that have read-write access
permissions. W hen disabled, the RAC rejects all SNMP set commands; the RAC
SNMPagentreturns the error no such name for the first object in the set command
(for more details, see allow_snmp_sets in the Nortel Networks 5399 and 8000
Access Switch Software Reference).

SNMP version 1 is not a secure protocol. SNMP bypasses the RAC’s security
measures. If security is a concern, the administrator should consider taking the
following security measures:

• Definethe community strings for specificIP addresses with read-write access.

• Disable all other SNMP access by defining none or read-only access.

• Institute filters on any firewall router to block SNMP traffic from outside the
local network. This is good practice in all cases, not just concerning the RAC.

The specifics of using the SNMP commands depend on the management station
(see your SNMP management station documentation). The MIB definitions in the
files provided in the directory /annex_root/src/snmp must be c ompiled and
included in your m anagement station database before you can manage the RAC
using SNMP.

1-2 300861-C Rev. 00

Simple Network Management Protocol (SNMP)

Using SNMP set to Send Commands to the RAC

The private enterprise MIB objects allow you to change the configuration of the
RAC.

Note: For some objects, the configuration changes do not take effect until the

RAC is rebooted.

Using the SNMP set command, you can broadcast a message, reseta port or
subsystem, a nd reboot the RAC.

• To broadcast a message, use SNMP set to write the message to the MIB object
anxcBcastMsg and then set the broadcast type to the MIB object anxcBcast.

• To reset a R AC subsystem, use SNMP set to write the desired type (all,
macros, motd, nameserver, security) to the MIB object anxcReset.

• To reset the RAC, use SNMP set to write the desired value to the MIB object
anxcReset.

• To reset a single internal m odem, use SNMP set to write a value to
mdmCtlReset.

• To reboot the RAC, set the desired image name using the MIB object

anxcBootImage and set any boot warning m essage using the MIB object
anxcBootMsg. For a delayed boot, set the boot time using the MIB object
anxcBootTime. Then set the boot type using the MIB object anxcBoot.

Note: To change the RAC’s configuration using set, SNMP must be enabled

at boot time. M ake sure the argument snmp is not disabled in the
disabled_modules parameter. For more details, see disabled_modulesin the

Nortel Networks 5399 and 8000 Access Switch Software Reference).
You cannot c onfigure filters through SNMP.

Internet Group Management Protocol (IGMP)

There are two IGMP limitation configuration parameters available f or the
administrator. The use of the parameters allow an increase or a limit on the
number of pending IGMP events and multicast packets for total num ber of IGMP
events and packets proc essed by the system. Refer to the N ortel Networks 5399

and 8000 Access Switch SoftwareReference.

300861-C Rev.00 1-3