The HasLowerLayerInterface ReferenceTypeis a concrete ReferenceTypeand can be used directly. It is a subtype of HierarchicalReferences ReferenceType.

The usage of the Referencesis following the YANG modelling approach which is using reference pointers in the YANG-interface nodes to point to other interface nodes in lower or higher layers (“lower-layer-if”, “higher-layer-if”); see also RFC 8343.

Virtual interfaces shall reference their physical interfaces with the HasLowerLayerInterfaceReferenceType. Annex Annex Acontains examples for such hierarchical references.

The SourceNodeof this ReferenceTypeshall be an Objectorganized in the NetworkInterfacesfolder.

The TargetNodeof this ReferenceTypeshall be an Objectorganized in the NetworkInterfacesfolder.

The HasLowerLayerInterface ReferenceTypeis formally defined in Table 54.

Table 54– HasLowerLayerInterfacedefinition

Attributes

Value

BrowseName

HasLowerLayerInterface

InverseName

HasHigherLayerInterface

Symmetric

False

IsAbstract

False

References

NodeClass

BrowseName

Comment

Subtype of the HierarchicalReferences ReferenceType defined in OPC 10000-5

Conformance Units

BNM IETF Interface Base Info