View MODAF:SV-2a System Port Specification View

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Overview

The SV-2a System Port Specification 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 www.mod.uk/modaf.

See MODAF Release History.

Purpose

From The MODAF System Viewpoint (SV) p10:

An SV-2a System Port Specification specifies the ports on a system, and the protocols used by those ports when communicating with other systems.

Subject to Crown Copyright

Background*

From The MODAF System Viewpoint (SV) p10:

An SV-2a provides a specification for each system port that is modelled in the architecture.

Subject to Crown Copyright

Description

From The MODAF System Viewpoint (SV) p11:

An Sv-2a is used to describe the interface protocols and hardware specifications of each port on a system. The view comprises of one diagram for each system in the architecture. Each port on the system is specified in terms of:

  • its name
  • the interface protocols used (e.g. OSI Stack)
  • the physical port specification (e.g. the physical element of the stack)

In many cases, a physical port may support more than one protocol in parallel (e.g. a TCP/IP network supporting http, ftp, telnet, etc.). All supported protocols relevant to the architecture shall be shown through the SV-2a for various systems.

Subject to Crown Copyright

Data Objects

From The MODAF System Viewpoint (SV) p10:

The data in an SV-2a can include:

MODAF_SV-2a_mm_dataObjects.gif*

Subject to Crown Copyright

Note that the diagram shows that the following can also be shown in the SV-2a:

Presentation

From The MODAF System Viewpoint (SV) p10:

  • Topological (connected shapes)
  • UML composite structure diagram
  • SysML structural diagram

Comments

Care is needed - the SV-2 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-2. You cannot therefore use it to describe interactions between Human Resource (Organisation, Job, Role).

Description isn’t consistent with simplified metamodel - Software and Software Port missing from data objects

Usual confusion between architecture and architecture description.

References

Other Frameworks

See also:


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

Categories:

 

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