[CESG] Fw: UPDATE: IOAG Action ID: 18a-03

[chris.taylor at esa.int]

Nestor, for CFDP I wonder if its necessary to lift out individual CFDP PDUs.
It could be done like this for a file received but it shouldn't be necessary
and the file could just be transferred as transparently as a  "black box"
If the CFFS is to be used to transfer files for subsequent upload by CFDP,
then the file should be transferred transparently,

regards,
//ct




From:	Nestor.Peccia at esa.int
To:	cesg at mailman.ccsds.org,
Cc:	John Pietras <john.pietras at gst.com>
Date:	31/07/2014 13:52
Subject:	[CESG] Fw: UPDATE: IOAG Action ID: 18a-03
Sent by:	cesg-bounces at mailman.ccsds.org



FYI
Nasa comments to CESG questions
ciao
nestor
----- Forwarded by Nestor Peccia/esoc/ESA on 31/07/2014 13:51 -----

From:        Michael Schmidt/esoc/ESA
To:        Gian Paolo Calzolari/esoc/ESA at ESA, Nestor Peccia/esoc/ESA at ESA,
Date:        31/07/2014 08:16
Subject:        Fw: UPDATE: IOAG Action ID: 18a-03


This is an interesting response from NASA.

Michael
----- Forwarded by Michael Schmidt/esoc/ESA on 31/07/2014 08:16 -----

From:        donotreply at ioag.org
To:        fabio.damico at asi.it, Jean-Marc.Soula at cnes.fr,
ganyong2000 at hotmail.com, ken.lord at asc-csa.gc.ca, pierre.jean at asc-csa.gc.ca,
martin.pilgram at dlr.de, Michael.Schmidt at esa.int, sks at isac.gov.in,
iwata.takanori at jaxa.jp, siahn at kari.re.kr, philip.e.liebrecht at nasa.gov,
peter.allan at stfc.ac.uk, rfc at rniikp.ru,
Date:        30/07/2014 20:11
Subject:        UPDATE: IOAG Action ID: 18a-03



Please do not reply to this email.

There has been an update to the following field(s):

Action: IOAG Delegates to
a) confirm or not whether the Forward File Service [CFFS] shall be able to
request three types of processing to Agency B depending on file contents, and
b) if they would have relative priority.
The 3 types of processing are:
1. Being the file a collection of Space Packets, Agency B would extract those
SP’s and transmit them over TC or AOS frames;
2. Being the file a collection of Encapsulation Packets, Agency B would
extract those EP’s and transmit them over TC or AOS frames;
3. Being the file to be processed with CFDP, Agency B would generate the CFDP
PDUS to be embedded either in SP’s or EP’s and transmit them over TC or AOS
frames.

Due Date: 6/20/2014 12:00:00 AM
Comments: a)  Only Type 3 of processing is needed.  Rationales: The IOAG
should not even consider any file structures different from the one already
standardized, I.e.,  by the CFDP standard.  More standards for files only
defeat the purpose of of interoperability and cross support.
NASA's response to AI 18-01, provided previously to the IOAG emphasizes that,
for inter-agency cross support at file level, we only need files, transferred
over space links, based on the CFDP file structure.  That is the standard
file structure currently defined by the CCSDS CFDP.  Given the CFDP-compliant
file structure for file transfer over space link, we will only need the CSTS
Transfer File Service [CFXS], instead of three new standards, for
ground-to-ground interface.

b) Relative priority: For CSTS Transfer File Service, the priority is 2.

Modified By: Dave Israel


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