Re: IP over DVB-S2

["Adrian J. Hooke" <adrian.j.hooke@jpl.nasa.gov>]

At 04:02 AM 6/21/2005, Lloyd Wood of Cisco
wrote:
> This HDLC approach has
> been proposed in the space agency domain for their CCSDS protocols, as
> easier than the various existing and arcane IP-in-CCSDS encapsulations.

"Easier" and "arcane" are subjective terms. The
current four variants of internationally standardized space link
protocols that are defined by the CCSDS Space Link Services Area

http://public.ccsds.org/publications/default.aspx provide standard
mechanisms for directly multiplexing variable-length IP packets into the
link framing mechanisms, as well as a lightweight encapsulation mechanism

http://public.ccsds.org/sites/cwe/rids/Lists/1331R3/Attachments/133x1r3.pdf
 that may be useful for carrying a variety of upper layer data units such
as IPv6 (including jumbograms). The current standards also allow a serial
stream to be carried point-to-point across a single link. The goal of the
current BOF is to examine whether there is a need to more clearly and
centrally define how these various IP transfer options operate. We would
welcome a liaison relationship with the new IP over DVB-S2
study.

Best regards

Adrian J. Hooke
Chairman, CCSDS Engineering Steering Group (CESG)
NASA Jet Propulsion Laboratory,
Interplanetary Network Directorate
Pasadena, California, USA