[Sis-csi] Meeting today 3:30PM EDT

Jane K. Marquart Jane.K.Marquart at nasa.gov
Fri Jun 2 09:26:56 EDT 2006


Keith,

  I'm sorry I never got through the whole book.  I see in your new edition 
that a few of my comments were addressed ( you got rid of services....I had 
lots there!).  Here are some comments, which I know are late and you can 
ignore if you so choose.

A couple of general comments:
-  There are some "we" or "first person" in the document that I think 
should be removed/reworded (i.e. 3.1.1)

-  The document is pretty heavy on detail, which is nice in one way, but 
for a Green Book I think there's too much.  You're also giving solutions, 
i.e. DiffServ. IPSec, etc., where I think that info is more suitable in a 
Recommendation (Red/Blue) or Recommended Practice (Magenta).  There's so 
much information, I found it hard to look at the simple picture.

Some specific comments:
Section 1.6 Scope - right after FIgure 4.  The word "prescribed", should 
probably be "recommended".

Section 3.6 is open-ended....  Maybe it was Microsoft, but the latter half 
of the paragraph seems to be missing.

Section 4.3 paragraph 2.  If you are referring to the QoS parameter in the 
frame header, I would argue that this is insufficient for onboard 
traffic.  Could possibly be used in conjunction with other QoS scheme, not 
good enough on its own.

4.3 last paragraph.  The example I think is weak.  I better one would be an 
app using 1553 to get data from a sensor, where it would be inefficient to 
go through a network.

Section 4.4.1  last paragraph - does using SCPS through network-layer 
gateways require any type of custom code/support?

Section 4.6.3  What is NASA's security policy?  If it does not include 
IPSec, does that mean we can never conform to IPv6?

Jane

At 01:56 PM 6/1/2006, Scott, Keith L. wrote:
>Content-class: urn:content-classes:message
>Content-Type: multipart/alternative;
>         boundary="----_=_NextPart_001_01C685A4.C1CF3C03"
>
>Let's touch base today at 3:30.  I've put what I think is (nearly, I know 
>of at least one figure that needs to be tweaked) the final version before 
>we submit to CESG in CWE 
>(<http://public.ccsds.org/sites/cwe/sis-csi/Public/CSI_GREEN_BOOK%20Draft_16.3_20060601.doc>http://public.ccsds.org/sites/cwe/sis-csi/Public/CSI_GREEN_BOOK%20Draft_16.3_20060601.doc)
>
>
>3:30PM EDT
>703.983.1550
>meetingID: 55555
>
>         --keith
>
>_______________________________________________
>Sis-CSI mailing list
>Sis-CSI at mailman.ccsds.org
>http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-csi

------------------------------------------------------

Jane Marquart
Flight Software Systems,Code 582
NASA/Goddard Space Flight Center
Greenbelt, Maryland  20771

301-286-7851 (phone)
301-286-1690 (fax)
jane.marquart at nasa.gov 
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