NASA’s Interplanetary Overlay Network (ION) is an implementation of Delay/Disruption Tolerant Networking (DTN).
DTN is a digital communication networking technology that enables data to be conveyed reliably among communicating entities when round-trip times may be highly variable and/or very long. Data transmission is performed automatically and reliably even if one or more of the network links in the end-to-end path between those entities is subject to very long signal propagation latency and/or prolonged intervals of unavailability.
ION DTN is suitable for both planetary and interplanetary environments succeptible to communication delay and disruption.
ION Open Source supports Linux and Solaris. Please consult the Quick Start for detailed instruction.
Support for FreeBSD, macOS, Windows, Raspberry Pi OS are provided on a best-effort, test and report (BETR) level. We will try, with reasonable effort, to test, document and fix issues related to these platforms but they are not officially supported.
Prototype demonstrations on how to build ION on Android, RTEMS, and ARM-based AT91SAM9G20 board are provided as is. Available from ION 4.1.3s or earlier; deprecated as of ION 4.1.4-a.2.
IOS is a full featured collection of latest ION software, containing operational modules such as BP and LTP, experimental prototypes for upcoming features, and utilities/add-ons provided by external contributors. This package facilitates open-source development of ION, DTN technology research, and protocol standardization-related testing.
https://github.com/nasa-jpl/ion-dtn
ION-core is a streamlined package containing only a subset of core Bundle Protocol features, convergence layer adaptor (link) and applications that has been flight demonstrated and hardened via extensive end-to-end testing and stress testing. It provides the ability to selective compile a subset of modules.
This package is designed for infusion/prototyping for embedded flight and ground systems.
https://github.com/nasa-jpl/ion-core
A python-based interface for rapid prototyping of DTN applications and DTN testing.
https://github.com/nasa-jpl/pyion
Both Web-based and Command Line Interfaces for automated generation of ION configuration files.
https://github.com/nasa-jpl/ion-config-tool
https://github.com/nasa-jpl/ion-network-model
ION uses a versioning scheme of the form X.Y.Z[-suffix].N, where:
Xis the major version number, incremented for significant changes that may include backward-incompatible changes.Yis the minor version number, incremented for backward-compatible feature additions and improvements.Zis the patch version number, incremented for backward-compatible bug fixes.[-suffix]is an optional suffix that may include additional information such as pre-release identifiers ('a' for alpha, 'b' for beta) or build metadata.Nis the build number, incremented for each build of a givenX.Y.Z[-suffix]version.
- Each stable release is tagged in the Git repository with a tag of the form
ion-open-source-X.Y.Z. - Each alpha and beta release is tagged in the Git repository with a tag of the form
ion-open-source-X.Y.Z-suffix.1. A release package is created for the first build of each alpha and beta release (i.e., build number1). - Online documentation is versioned according to the stable release and build 1 of alpha/beta releases.
- Starting with ION 4.1.4-b.1, we will be providing tags, but not release packages, for subsequent builds of alpha/beta releases (i.e., build numbers greater than
1) to facilitate testing and development and wider, quicker access to the latest code.
Beginning with version 4.1.3, ION documentation is hosted here online.
Under the doc subfolder, there are older versions of ION documents kept for user's reference if needed, but they will not be updated going forward and may be removed without prior notice. Users are encouraged to use the online documentation in order to receive the most up-to-date information on ION features and issues.
The release-notes.txt file will continue to be updated for each stable release.
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Videos and documents and links to videos of the Interplanetary Overlay Network course can be found on the NASA website.
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For details about changes regarding each ION release, please see the Release Notes
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