MIBs list

expValueEntry

Expression Value Entry
1.3.6.1.2.1.90.1.3.1.1

A single value from an evaluated expression. For a given instance, only one 'Val' object in the conceptual row will be instantiated, that is, the one with the appropriate type for the value. For values that contain no objects of expObjectSampleType 'deltaValue' or 'changedValue', reading a value from the table causes the evaluation of the expression for that value. For those that contain a 'deltaValue' or 'changedValue' the value read is as of the last sampling interval. If in the attempt to evaluate the expression one or more of the necessary objects is not available, the corresponding entry in this table is effectively not instantiated. To maintain security of MIB information, when creating a new row in this table, the managed system must record the security credentials of the requester. These security credentials are the parameters necessary as inputs to isAccessAllowed from [RFC2571]. When obtaining the objects that make up the expression, the system must (conceptually) use isAccessAllowed to ensure that it does not violate security. The evaluation of that expression takes place under the security credentials of the creator of its expExpressionEntry. To maintain security of MIB information, expression evaluation must take place using security credentials for the implied Gets of the objects in the expression as inputs (conceptually) to isAccessAllowed from the Architecture for Describing SNMP Management Frameworks. These are the security credentials of the creator of the corresponding expExpressionEntry.

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