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Overview of Basic SNMP Building Blocks

What are SNMP MIBs?

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Basic Dial NMS Implementation Guide

Figure 2 SNMP Event Interactions Between the NMS and the Agent

What are SNMP MIBs?

A Management Information Base (MIB):

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Presents a collection of information that is organized hierarchically.

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Is accessed by using a network-management protocol, such as SNMP.

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References managed objects and object identifiers.

Managed object

—A characteristic of a managed device. Managed objects reference one or more object

instances (variables). Two types of managed objects exist:

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Scalar objects—Define a single object instance.

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Tabular objects—Define multiple-related object instances that are grouped together in MIB tables.

Object identifier

(or object ID)—Identifies a managed object in the MIB hierarchy. The MIB hierarchy

is depicted as a tree with a nameless root. The levels of the tree are assigned by different organizations

and vendors.

Agent

(Cisco IOS device)

NMS

initiated

Trap (agent initiated)

Get request

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Response

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