NASA Space DTN Program Keith Scott SIS-DTN WG Wednesday Afternoon 28 October 2009SIS-DTN 1.

NASA Space DTN Program

Keith Scott

SIS-DTN WGWednesday Afternoon

28 October 2009 SIS-DTN 1

AgendaSpace DTN

July 2009 Feb

Q2

Mar Apr May

Q3

Jun Jul Aug

Q4

Sep Oct Nov

Q1

Dec Jan

Q2 Q3 Q4

CY 2009 CY 2010 CY 2011

Q1 Q2 Q3 Q4 Q1

Feb Mar Apr MayJun Jul AugSep Oct NovDec Feb Mar Apr MayJun Jul AugSep Oct NovDecJan

Concept Papers for BP and LTP

CCSDS DTN Green Book

Red-1 Books for BP and LTP

Blue Books for BP and LTP

Red-2 Books for BP and LTP

Draft Red Books for BP and LTP

JPL Flight Implementation-II

GSFC FlightImplementation-I

Network Management, Routing, SecurityUser Requirements Documentation

DTN Implementation to Cx Program?

Security (BAB), BW

constraints, Disruption

Jan

DEN Cap1

DEN Capability Demo 4

DEN Capability Demo 3

DEN Capability Demo 2

DINET-IIFlight Demo

Lunar Habitat Demonstration

CoNNeCT Flight Demo

Lunar Surface ScenarioBioServe-1

CGBA-5

Basic connectivity; static routing

ISS

LEO Scenarios

DTN Gateway at HOSC

GSFC FlightImplementation-II

FlightSystems

DemonstrationAnd

Validation

SpecificationAnd

Standardization

L1 L2

T1

SpaceOps (tentative)

T3DTN Node at TDRSS WSC

Desert RATS

(tentative)

T2

ION WGProtocol

Engineering

TDRSS Demos

BioServe-2 CGBA-4

28 October 2009 SIS-DTN 2

Flight Systems

• Maturing the JPL ION DTN implementation to common NASA-wide implementation• Include in Goddard core Flight Executive• Use common codebase across APL, Goddard, JPL, JSC

missions• More from Jane when she talks about the ION Working

Group

28 October 2009 SIS-DTN 3

Demonstration and Validation

• DTN supporting BioServe on ISS

• Operating 24x7

• Getting operational experience

• 2nd on-orbit DTN node due to become operational March 2010

• DTN Experimental Network (DEN)

• Multi-center testbed

• Supports experimentation and validation of new capabilities

- Performance in errored / delayed environment

- Bundle Authentication Blocks (hop-by-hop security)

• Operations Scenarios

- Lunar Habitat Scenario: Streaming video over DTN Tunnel (tested between

JPL and JSC)

28 October 2009 SIS-DTN 4

Demonstration and Validation

• DINET-I Flight Demonstration

• Report available

• DINET-II Flight Demonstration

• Operations in mid-November 2009

• CFDP / DTN / LTP implementation

• DTN capabilities in TDRSS

• DTN at TDRSS Ground Station

• DTN over LTP over Encap over AOS

• Planning demo at SpaceOps 2010

28 October 2009 SIS-DTN 5

Demonstration and Validation:Lunar Surface Motion Imagery Scenario

Motion Imagery Data FlowEVA Communications Stack Diagram

DTN-11

BP

802.16

IP

UDP

IP

UDP

AOS

Encap

RF

LCT

BP

IP

UDP

AOS

Encap

RF

IP

UDP

RF

AOS

Encap

LRS MCCGS

BP Tunnel App

BP

IP

UDP

RF

ETH

AOS

Encap

EVA

IP

RTP

802.11

MPEG-2 TS

H.264

LER

BP

802.16

IP

UDP

IP

RTP

802.11

MPEG-2 TS

H.264

ETH

IP

RTP

MPEG-2 TS

H.264

BP Tunnel App

IP

Protocol Engineering

• Network Management• Have been working ‘SMTP-like’ approach: local monitoring and control

coupled to DTN gateway for remote communications• Basic MIB under review

• Routing• Have been experimenting with Contact Graph Routing; used on DINET-I and

–II• Implemented in ION and soon in DTN2

• Security• Bundle Authentication Block implementation for ION, full Bundle Security

Protocol implementation for DTN-2

• Naming and Addressing• ‘ipn’ scheme consistent with compressed bundle header encoding• ipn://X.Y where X and Y are self-delimiting numerical values (auto-scaled

integers) for node number (interface) and service number (port)• Implemented in ION and soon in DTN2

28 October 2009 SIS-DTN 7

Specification and Standardization

• Green Book continually revised• Talk Thursday about additional requirements and operational

scenarios• Want to come to consensus on a schedule for completion

• Concept papers for protocol specifications distributed in July / August• Step 1: Slap a service specification on the existing

specifications• Step 2: Revise specifications / service specifications in

response to requirements, operational scenarios from October Green Book inputs

• Step 3: Testing and experimentation by agencies• Step 4: Submit for Red-1 Status

28 October 2009 SIS-DTN 8