Intermec CN2B Manual de usuario descargar pdf (Pagina 127)

Chapter 4 — Network Support

CN2B Mobile Computer User’s Manual 109

seven read-only MIB-II (RFC1213-MIB) Object Identifiers (OIDs). Note

that you can query these seven OIDs through an SNMP management station.

Management Information Base

The Management Information Base is a database that contains information

about the elements to be managed. The information identifies the manage

ment element and specifies its type and access mode (Read-Only, Read-

Write). MIBs are written in ASN.1 (Abstract Syntax Notation.1) — a

machine independent data definition language. Note: Elements to manage

are represented by objects. The MIB is a structured collection of such objects.

You will find the following MIB files either in the CN2B Management

Tools or on the web via

www.intermec.com:

• INTERMEC.MIB

Defines the root of the Intermec MIB tree.

• ITCADC.MIB

Defines objects for Automated Data Collection (ADC).

• ITCSNMP.MIB

Defines objects for Intermec SNMP parameters and security methods,

such as an SNMP security IP address.

• ITCTERMINAL.MIB

Defines objects for parameters, such as key clicks.

Object Identifiers

Each object has a unique identifier called an OID, which consist of a

sequence of integer values represented in dot notation. Objects are stored in

a tree structure and OIDs are assigned based on the position of the object

in the tree. For example, the internet OID is equal to 1.3.6.1. Seven MIB

OIDs are shown in the following table:

MIB Object Identifiers

MIB-II Item OID Group or Table Description

ifNumber 1.3.6.1.2.1.2.1.0 Interfaces Group Indicates the number of adapters

present in the system. For the

CN2B Computer, if one adapter

is present in the system, then

ifNumber = 1 and ifIndex = 1.

ifIndex 1.3.6.1.2.1.2.2.1.1.ifIndex Interfaces Table (ifTable) A unique value for each interface.

The value ranges between 1 and

the value of ifNumber.

ifDescr 1.3.6.1.2.1.2.2.1.2.ifIndex Interfaces Table (ifTable) A textual string containing infor-

mation about the interface.

ifType 1.3.6.1.2.1.2.2.1.3.ifIndex Interfaces Table (ifTable) An integer containing informa-

tion about the type of the inter-

face. It is equal to 1 for Other.

1 2 ... 122 123 124 125 126 127 128 129 130 131 132 ... 263 264

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