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New Member

MIB compilation

what is the advantage of loading MIBs into NMS ? If I want to read the value of particular OID is it ok to use the that particular OID or I have to load the MIB.

How the NMS reads the interface type from MIB for a particular value of ifType?

3 REPLIES
Red

Re: MIB compilation

The advantage of loading MIBs into NMS is that the OIDs will be translated from numbers to words.

For example, the NMS would map 1.3.6.1.2.1.2.2.1.3 to ifType

New Member

Re: MIB compilation

Thank You.

when MIB is loaded into the NMS how it is organized? In a tree structure ?

How the NMS finds a particular OID from that structure?

Cisco Employee

Re: MIB compilation

The MIB structure is a logical tree, and most MIB parsers use a tree data structure to represent it in memory. The internal tree choice and implementation of a specific NMS dictate exactly how an OID is resolved to an object name (e.g. breadth-first search, depth-first search, etc.).

Regardless, each branch of the tree has a numerical identifier, and MIBs map those identifiers to a textual name. For example, 1.3.6.1.2.1.2.2.1.3:

iso (1)

org (3)

dod (6)

internet (1)

mgmt (2)

mib-2 (1)

interfaces (2)

ifTable (2)

ifEntry (1)

ifType (3)

You can use tools such as http://jaguar.ir.miami.edu/~marcus/snmptrans.html to help visualize this tree.

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