ResourceId
A unique identifier for this resource. The type of the resource can be determined by looking at the OID that describes the resource. Resources must be identified in a consistent manner. For example, if this resource is an interface, this object MUST point to an ifIndex and if this resource is a physical entity [RFC2737], then this MUST point to an entPhysicalDescr, given that entPhysicalIndex is not accessible. In general, the value is the name of the instance of the first accessible columnar object in the conceptual row of a table that is meaningful for this resource type, which SHOULD be defined in an IETF standard MIB.