xsecurityObjID 1.3.6.1.4.1.838.3.8.1.2.1.1.1

The Object Identifier of a known object, or a particular instance of the object. Objects can be end nodes, which contain readable data, or they can be inner nodes which are only used to identify the end points. The object ID can be secified by using the complete OID of an object, with the exact OID digits making up the instance portion of the object when needed. In all cases, an 'end of ID' marker of decimal '999' will be used to separate the base objectID from the instance portion of the whole OID. When '.0' instance information is specified, the 'object-wide' security levels of the object are modified. But, when specific instance information is specified, the security levels of a particular instance are modifed. Then,only requests with exactly matching instance information are validated against the specified levels. The '.0' also indicates where the 'base' oid ends and the instance information (if any) begins. This way, it is possible to identify high level nodes with specific instances matching lower level nodes. ie: ifEntry.1 --> ifEntry.999.1 filters out all instances of '1'. The '999' is necessary since ifEntry.1 looks exactly the same as ifIndex. 1.3.6.1.2.1.2.2.1 ifEntry 1.3.6.1.2.1.2.2.1.1 ifIndex