View MODAF:SV-2b System Port Connectivity Description View



The SV-2b System Port Connectivity Description View is part of the MODAF System Viewpoint and one of the 47 MODAF views.

Version & Date

Version 1.2.004.

* =  changed at 1.2.004

+ =  new at 1.2.004

The change history is derived from the definition of each MODAF view within the The MODAF System Viewpoint viewpoint defining document from

See MODAF Release History.


From The MODAF System Viewpoint (SV) p13:

An SV-2b specifies the communication links between systems and may also list the protocol stacks used in connections.

Subject to Crown Copyright

Note: Protocol Stack was deleted at 1.2.004 so not sure this description is correct.


From The MODAF System Viewpoint (SV) p13:

An SV-2b Product is used to give a precise specification of a connection between systems.

Subject to Crown Copyright


From The MODAF System Viewpoint (SV) p14:

Each diagram shall show:

  • Which ports are connected.
  • The systems to which the ports belong.
  • The definition of the connection in terms of the physical connectivity and any protocols that are used in that connection.

The SV-2b view is closely related to the SV-2a view that specifies the available protocols on each port. Any connection specified in an SV-2b view shall conform to the protocols specified on the corresponding port definitions in the SV-2a view.

Subject to Crown Copyright

Data Objects*

From The MODAF System Viewpoint (SV) p13:

The data in an SV-2b can include:


Subject to Crown Copyright

Note that this diagram shows that the following can be included:


From The MODAF System Viewpoint (SV) p13:

  • topological - connected shapes
  • UML composite structure diagram
  • SysML Block Diagram

Subject to Crown Copyright


Care is needed - the SV-2b only allows resource interactions between systems to be described and characterised. Although at MODAF 1.2.004 any Resource can have a Resource Port this relationship cannot be shown in a SV-2b. You cannot therefore use it to describe interactions between Human Resource (Organisation, Job, Role).

Description isn’t consistent with simplified metamodel - Software, Software Port, Resource] Interaction and Implemented Protocol missing from data objects



Other Frameworks

See also:

Category:Framework -> View
Category:MODAF -> View



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