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Newly Revised DTN Tutorial v3.2 Available

Warthman Associates

Warthman Associates






Forrest Warthman, of Warthman Associates, with assistance from Scott Burleigh of NASA/JPL, has recently completed revisions and updates to the “DTN Tutorial” document to bring it up to date with developments in DTN since the last update was published three years ago. He has also created a version of the document intended for less-technical folk (the “DTN Primer v3.2″).

Many thanks to Forrest for donating his time and skill to this effort!



STINT Workshop Coming 14-Dec-2015






The Space Terrestrial Internetworking Workshop (STINT) for 2015 is coming up in December. It will coincide with IEEE WiSEE in Orlando, Florida. The workshop runs from December 14th through the 16th. For more information, see the STINT 2015 website.

The theme for STINT 2015 is Optimizing End-To-End Exchange. Papers are being solicited for the following topics:

  • Delay and Disruption Tolerant Networking.
  • Modeling and Dynamics of Mobile Space-Based Networks.
  • Autonomous Configuration and Control of Network Nodes.
  • Protocols, Applications, and Concepts for Network Management.
  • End-to-end Security Services Across an Internetworking Overlay.
  • Store-and-Forward Routing, Congestion Modeling, and Topological Sychronization.
  • Mission Concepts Enabled by Internetworks.

2015 IPN Conference Videos Available

Videos (in pretty luscious HD) of the speaker presentations are available on the Internet Society’s LiveStream channel:

And also on YouTube:


Speaker Presentation Materials 2015

Here are the speakers’ presentations from last week’s IPN conference in Washington, DC:

Brett Willman (NASA): “DTN deployments on the International Space Station”  Coming soon…

Donald Cornwell (NASA): “NASA’s Advanced Communications Program and the Opportunities for DTN” NASA’s Advanced Comm Program and Opportunities for DTN pt1NASA’s Advanced Comm Program and Opportunities for DTN pt2NASA’s Advanced Comm Program and Opportunities for DTN pt3

David Israel (NASA): “A DTN-Enabled Near Earth Architecture” IPNSIG 2015 Dave Israel v2

Scott Burleigh (NASA/JPL): “What’s New in ION?” What’s new in ION

Keith Scott (Area Director, CCSDS: “DTN networking protocols being standardized for space communication as part of the Solar System Internet” IPNSIG Presentation — DTN for CCSDS – v3

Fred Templin (Boeing): “Demonstration of the delay-tolerant public key infrastructure system” IPNSIG DTN Security Key Management

Dr. Scott Pace (Director, the Space Policy Institute, George Washington University): “US Space Policy Choices” IPN ISOC Talk 18 May 2015 Pace no backups or video

IPN Speakers Conference Webcast Link


Our IPN event in Washington, DC, is going live in just a couple of hours! The event can be viewed on the Internet Society’s LiveStream channel:

Hope you all can join in!

Agenda for IPN Conference May 18th

Agenda4This is the agenda for Monday’s event. Please consult for parking/location information (coming soon) and any last-minute logistics.

Speaker Bios for May 18th IPN Event

We have a great line-up of renowned speakers for our event in Washington, DC, on May 18th! See our previous post for more details and a link to the registration site.

Scott Burleigh


Mr. Burleigh co-authored the specification for the CCSDS (Consultative Committee for Space Data Systems) File Delivery Protocol (CFDP), an international standard for file transfer over interplanetary distances.  Mr. Burleigh developed the first implementation of CFDP, which was adapted for operational use on a number of flight missions, including JPL’s Deep Impact comet exploration mission.

Mr. Burleigh was a co-author of the DTN Architecture definition (Internet RFC 4838) and also of the specification for the DTN Bundle Protocol (BP, Internet RFC 5050).  In addition, he is a co-author of the specifications for the Licklider Transmission Protocol (LTP, Internet RFCs 5325 through 5327) supporting data block transmission reliability at the data link layer.

Mr. Burleigh leads the development and maintenance of the “Interplanetary Overlay Network” (ION) implementations of BP and LTP software, with the long-term goal of enabling deployment of a delay-tolerant Solar System Internet.  The ION software has been flight tested on-board the EO-1 Earth-orbiting spacecraft and on the EPOXI spacecraft in deep space, and it will begin providing Delay-Tolerant Networking service to science investigation payloads on the International Space Station later this year. Mr. Burleigh chairs the ION Working Group.


Vint Cerf


Vinton Cerf, widely recognized as one of the “Fathers of the Internet” for his work on the design of the TCP/IP protocols and the architecture of the Internet, has served as Vice President and Chief Internet evangelist for Google since October 2005.  He was chairman of the Internet Corporation for Assigned Names and Numbers (ICANN) from 2000-2007. He is currently also President of the Association for Computing Machinery. Mr. Cerf is also the former Senior Vice President of Technology Strategy and Architecture and Technology for MCI. While working with MCI, Mr. Cerf led the engineering of MCI Mail, the first commercial email service to be connected to the Internet. He currently serves on several boards and has received numerous awards for his continuously pioneering work including the U.S. National Medal of Technology, the ACM Alan M. Turing award, the Presidential Medal of Freedom, the Japan Prize and the Queen Elizabeth II Prize for Engineering. He was recently promoted to Officer of the French Legion d’Honneur.

Cerf holds a Bachelor of Science degree in Mathematics from Stanford University and Master of Science and Ph.D. degrees in Computer Science from UCLA and holds 21 honorary degrees from universities around the world.


Donald Cornwell


Don Cornwell is the Director of the Advanced Communications and Navigation Division within the Space Communications and Navigation (SCaN) Program at NASA Headquarters.  Dr. Cornwell was formerly the mission manager of NASA’s Lunar Laser Communications Demonstration, which recently won the National Space Club’s 2015 Nelson P. Jackson Award for the historic demonstration of high-date-rate (600 Mbps) laser communications to and from the Moon in 2013.   Prior to joining NASA in 2011, Dr. Cornwell spent a decade in commercial fiber telecommunications as a Senior Director at Broadwing Corporation (now Level 3) in Austin, TX and as the Vice President for Systems at Corvis Corporation in Columbia, MD.

Suzanne Davidson

DavidsonBorderSuzanne Davidson is the Lead Engineer for the Joint Station LAN (JSL) of the International Space Station (ISS) under contract to the National Aeronautics and Space Administration (NASA) Lyndon B. Johnson Space Center. An Associate Technical Fellow for the Boeing Company, her responsibilities include development of the ISS Ethernet Architecture, infrastructure design, hardware certification, HW/SW configuration, system level testing and sustaining engineering. She has in-depth experience in network applications and project management. She initiated the Disruption/Delay Tolerant Networking Protocol for ISS within Boeing and the recent infusion of DTN routing nodes on the ISS. Prior to working for Boeing, she held network engineering positions at IBM, Lockheed Martin, and Compaq/HP. She is also the inaugural recipient of the Society of Women Engineer’s 2014 Global Leadership Award.



David Israel

IsraelBorderDave Israel is the Architect for the Exploration and Space Communications Projects Division at NASA Goddard Space Flight Center and the Principal Investigator for NASA’s Laser Communications Relay Demonstration (LCRD).  In over 25 years of space communications engineering, he has led multiple technology developments and demonstrations.  These include the first high speed Internet connections to Earth’s South and North Poles and odd places in between via NASA’s Tracking and Data Relay Satellite System (TDRSS), including an experiment on Space Shuttle Columbia STS-107.  He led a demonstration of DTN over the Lunar Laser Communication Demonstration during its historic mission in 2013.  He has been actively involved in all of the various NASA Space Internetworking Studies, is Co-Chair of the international Space Internetworking Strategy Group, and is a member of NASA’s DTN Project.


Scott Pace

PaceBorderDr. Scott Pace is the Director of the Space Policy Institute and a Professor of Practice in International Affairs at George Washington University’s Elliott School of International Affairs.  His research interests include civil, commercial, and national security space policy, and the management of technical innovation. From 2005-2008, he served as the Associate Administrator for Program Analysis and Evaluation at NASA.

Prior to NASA, Dr. Pace was the Assistant Director for Space and Aeronautics in the White House Office of Science and Technology Policy (OSTP).  From 1993-2000, Dr Pace worked for the RAND Corporation’s Science and Technology Policy Institute (STPI).  From 1990 to 1993, Dr. Pace served as the Deputy Director and Acting Director of the Office of Space Commerce, in the Office of the Deputy Secretary of the Department of Commerce.  He received a Bachelor of Science degree in Physics from Harvey Mudd College in 1980; Masters degrees in Aeronautics & Astronautics and Technology & Policy from the Massachusetts Institute of Technology in 1982; and a Doctorate in Policy Analysis from the RAND Graduate School in 1989.

Dr. Pace received the NASA Outstanding Leadership Medal in 2008, the NASA Group Achievement Award, NASA World Radiocommunications Conference Team, in 2005, the U.S. Department of State’s Group Superior Honor Award, GPS Interagency Team, in 2005, and the NASA Group Achievement Award, Columbia Accident Rapid Reaction Team, in 2004.  He has been a member of the U.S. Delegation to the International Telecommunications Union’s World Radiocommunications Conferences in 1997, 2000, 2003, and 2007.  He was also a member of the U.S. Delegation to the Asia-Pacific Economic Cooperation Telecommunications Working Group, 1997-2000.  He is a past member of the Earth Studies Committee, Space Studies Board, National Research Council and the Commercial Activities Subcommittee, NASA Advisory Council.  Dr. Pace is a currently a member of the Board of Trustees, Universities Space Research Association, a Corresponding Member of the International Academy of Astronautics, and a member of the Board of Governors of the National Space Society.


Keith Scott

KScottBorderDr. Keith Scott worked for NASA Jet Propulsion Laboratory from 1997-1998, where he used ACTS mobile terminal data to characterize the effects of Ka-band satellite channels on TCP and SCPS-TP performance. Since joining The MITRE Corporation in 1998, Keith has worked on a number of projects for NASA and the DoD concerning communications in stressed environments including satellite and tactical data networks. He began working on the Interplanetary Internet in 1998, implemented a precursor to the current Bundle Protocol, and is co-author of the Bundle Protocol RFC.  Keith currently serves as Area Director for Space Internetworking Systems for the Consultative Committee for Space Data Systems and leads the CCSDS DTN working group that is standardizing DTN protocols for use in civilian space missions. Keith is also a member of the Internet Research Task Force and Internet Engineering Task Force’s Delay Tolerant Networking working groups.


Fred Templin

TemplinBorderFred Templin is a computer networking R&D professional with focus on Internet protocol and data link specifications, operating system networking internals, networked applications, and programming languages. He has in-depth experience in Internet networking and security architectures for civil aviation, tactical military, space-based systems and enterprise network applications. Mr. Templin has been an active contributor to the Internet Engineering Task Force (IETF) since 1999. He is currently a senior research engineer in Boeing Research & Technology (BR&T) since May 2005, where he is an Associate Technical Fellow of the Boeing Company.






Brett Willman

PHOTO DATE: 05-16-14 and 05-20-14 LOCATION: Bldg. 8, Room 183 - Photo Studio SUBJECT: ISS Avionics & Software Office Portrait Project, BRETT WILLMAN PHOTOGRAPHER: BILL STAFFORDBrett Willman is the Deputy Manager of Computer Resources for the International Space Station (ISS) at the National Aeronautics and Space Administration (NASA) Lyndon B. Johnson Space Center.  In this role, he is responsible for the lifecycle of computer systems on ISS, including infrastructure certification, configuration, maintenance, and decommission.  Prior to his current position, Brett served as a flight controller at NASA’s Mission Control Center for computer systems on ISS.  He was technical lead for Expedition 13 and STS-119.  Brett holds a Bachelor of Science in Computer Engineering and a Master of Computer Science with an emphasis in Network Engineering and Information Security from Texas A&M University.



IPN ISOC Presents: 2nd Annual IPN Conference in Washington, DC

Coming Monday, May 18th, 2015!

2nd Annual IPN Speakers Conference

Showcasing Delay & Disruption Tolerant Networking (DTN): the Emerging Standard for Space Data Communications

Last year’s IPN speaking event—Space Technology Innovations: Enabling Exploration Above, Improving Life Below—presented how DTN can enable space data communications as well as provide network services in constrained terrestrial network environments. This year we are focusing upon DTN in the space arena. Our speakers include:

  • Vint Cerf (Google VP, co-author of TCP-IP, one of the “fathers of the Internet—and IPN-ISOC board member) will provide an overview of InterPlanetary Networking.
  • The NASA/Boeing team (Brett Willman & Suzanne Davidson) working on DTN aboard the International Space Station
  • The NASA team (David Israel & Donald Cornwell) who concluded the very successful Lunar Laser Communication Demonstration in late 2013 and who are planning the 2017 Laser Relay Communication Demonstration.
  • Scott Burleigh (JPL’s chief DTN architect) will be explaining recent significant enhancements to the ION DTN distribution (the distribution currently in use on ISS).
  • Keith Scott leads the Consultative Consortium for Space Data Systems (CCSDS) DTN working group that is standardizing DTN protocols for use in civilian space missions.  He will talk about the Bundle Protocol becoming one of the networking protocols being standardized for space communication as part of the Solar System Internet (the other is IP).
  • Fred Templin of Boeing will demonstrate the delay-tolerant public key infrastructure system Scott Burleigh of JPL developed last year (“DTKA”—the Delay Tolerant Key Agreement). This is a potentially important new security enhancement to DTN.
  • Scott Pace is the Director of the Space Policy Institute at George Washington University. He will be speaking about the increasing importance of space policies as more nation states engage and collaborate in space exploration.

Admission is free and breakfast, lunch and an afternoon snack will be provided—but you MUST register to attend. Physical attendance is limited to 150 people. The event will be webcast on the Internet Society’s LiveStream channel and presentations will be available on YouTube for VOD streaming after the event.

The event starts at 9 a.m. Speakers conclude at 5:00 p.m. A beer and wine reception follows immediately after and concludes at 6 p.m.

Boeing is hosting our event at their Long Bridge facility at:

929 Long Bridge Drive, Arlington, VA, 22202
Building 95-929

Register at: our EventBrite registration site

Speaker bios can be viewed here.

IPN Event Rescheduled for May 18th, 2015!

The InterPlanetary Networking Chapter of the Internet Society (IPN-ISOC) is presenting its second annual Space Technology Innovations Conference at the Boeing Long Bridge facility in Arlington, VA (just outside Washington, DC) on Monday, May 18th, 2015.

Confirmed Speakers:

Dr. Vinton Cerf (Google VP; co-author of TCP-IP—one of the “Fathers of the Internet”)

Scott Pace (Director of the Space Policy Institute at George Washington University)

Brett Willman (NASA JSL Manager), Suzanne Davidson (Boeing ISS DTN Lead)

David Israel and Don Cornwell (NASA Goddard Space Flight Center)

Full speaking agenda and speaker bios will be posted soon.

The event will be webcast live over the Internet Society’s LiveStream channel, and videos of the speaker presentations will be available for on demand streaming.

Admission is free and includes continental breakfast, lunch and an afternoon snack. The speaking agenda will be followed by the annual meeting of the chapter.

Join us!

CCSDS Update





Board member Keith Scott provides this update on DTN activities within CCSDS.

CCSDS is in the process of review and approval of two key DTN protocols of particular interest to the InterPlanetary Networking community: the Licklider Transport Protocol and the Bundle Protocol. CCSDS approval will establish LTP and BP as Space Data Systems standards for all member space agencies.

LTP review is pretty much all but done. BP is in its third member agency review, and is scheduled to complete that review in October, 2014.

In other news, deployment of DTN for operational communications between earth and the International Space Station is expected to occur this Fall. The NASA Change Request for deploying DTN for ISS operations was approved in 2013. DTN is already used for most communications between ISS experimental payloads and earth-based researchers and operators.



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