A link is a physical connection between two network elements.

The complete hierarchy of predefined link business objects is as follows:

For a general introduction to predefined business objects, refer to section Introducing business objects and data sources.

You can retrieve any of the above classes using the corresponding GetIlpClass method. You can handle any instance of these classes as a simple IlpObject and get and set their attributes with the generic methods getAttributeValue and setAttributeValue.