⇒Management Information Base
⊗MIB is a set of objects to be managed, and it defines a series of attributes of managed objects:
√Object IDentifier
√Access permission of object
√Data type of object
⊗Structure of Management Information stipulates how to organize and defines the managed objects
√SMIv2 (RFC2578)
√SMIv1 (RFC 1155)
⇒MIB Structure
⊗MIB is saved as a tree structure
√The nodes of the tree represent for the managed target, and they can be identified by a path from the root: OID
⇒OID
⊗ It is a unique symbol for object in MIB
√OID allocation scheme ensures that OID will not have collision
⊗ OID is composed of a series of integers, indicating the position of nodes in MIB
⊗ Once MIB is issued, OID will be bound to the defined object
√MIB nodes cannot be removed, and you can set the state to “obsolete”
√It is not recommended to change the MIB nodes repeatedly
MIB Example⇒
Address:
Object ID = 1.1
Object Instance = 1.1.0
Value of Instance = 130.89.16.2
Name:
Object ID = 1.2.1
Object Instance = 1.2.1.0
Value of Instance = printer-1
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