Overview of Basic SNMP Building Blocks

What are SNMP MIBs?

Figure 3 The MIB Tree and Its Various Hierarchies

 

ccitt (0)

 

 

iso (1)

 

iso-ccitt (2)

 

 

 

 

 

 

 

 

 

 

 

 

 

standard (0)

 

registration-

 

member-

 

identified-

 

 

 

authority (1)

 

body (2)

organization (3)

 

 

 

 

 

 

 

 

 

dod (6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

internet (1)

 

 

 

 

 

 

 

 

 

 

 

 

 

directory (1)

mgmt (2)

 

experimental (3)

private (4)

 

security (5)

snmpV2 (6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mib-2 (1)

enterprise (1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cisco (9)

 

 

 

 

temporary

 

 

 

 

 

 

 

 

 

variables (3)

DECnet (1)

XNS (2)

Apple Talk (3)

Novell (3)

VINES (4)

Chassis (5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

atInput (1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

atLocal (2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

atBcastin (3) atForward (4)

24187

As shown in Figure 3, top-level MIB object IDs belong to different standards organizations while low-level object IDs are allocated by associated organizations. Vendors define private branches that include managed objects for products. Non standard MIBs are typically in the experimental branch.

A managed object has these unique identities:

The object name—For example, iso.identified-organization.dod.internet.private.enterprise.cisco. temporary variables.AppleTalk.atInput

or

The equivalent object descriptor—For example, 1.3.6.1.4.1.9.3.3.1.

Basic Dial NMS Implementation Guide

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Cisco Systems Dial NMS manual Vines