[CESG] RE: Magenta, Blue and Profiles

[Hooke, Adrian J (9000)]

Bob Durst suggested an important modification to 1c, which I paraphrase below for your consideration:

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1.      The litmus test between a Blue Book and a Magenta Book is as follows.

a.      If a document has interoperability properties, and;

b.      If it is directly implementable (i.e., two people could independently read the specification, each produce an independent implementations and it could be realistically expected that those two implementations would interoperate), and;

c.       If it clearly needs to be tested, because failure to conduct interoperability testing prior to release of the standard may place an adopting mission at operational or financial risk.
Then it is a Blue Book. If not, it is a Magenta Book.


2.      Within the Blue Book category there are three types of standard:

a.      CCSDS Recommended Standard (something that internally contains a native specification developed by CCSDS)

b.      CCSDS Recommended Standard: Adaptation Profile (something that adopts/adapts a native specification developed somewhere else, such as by another standards organization)

c.       CCSDS Recommended Standard: Utilization Profile (something that specifies how to use one or more existing CCSDS Blue Books to perform a particular function)

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A good test case came up yesterday: IP-over-CCSDS Links. Clearly, IP is a 2b standard and IP itself has been interoperability tested at least enough to pass CCSDS muster ;-) . However, interoperability of two implementations of IP running over Encap needs to be verified. Separate interoperability testing of Encap-over-CCSDS Links takes care of the rest.

///a

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