What exact does MIB represent in SNMP? How is it different from OID? In SNMP, we represent each entity of information using object and to identify each object uniquely, we use OID (Object Identifier). Now there is another terminology - MIB. I know it stands for "Management Information Base". However, I am not able to understand the concept of the term MIB. Below is the image which represents the pictorial representation of object hierarchy tree- ![enter image description here]( rttMonCtrlAdminTag, rttMonCtrlAdminRttType, rttMonCtrlAdminFrequency represents Objects and corresponding OIDs are .1.3.6.1.4.1.9.9.42.1.2.1.1.3 .1.3.6.1.4.1.9.9.42.1.2.1.1.4 .1.3.6.1.4.1.9.9.42.1.2.1.1.6 In this pictorial representation what does MIB represent?

The MIB is the entire catalog of OIDs (for a particular device).

An OID is a specific reference to an individual item within the MIB.

An analogy: The MIB is like the phone book for my city. The OID is like my name in the phone book.