DDS Interoperability Demo using the DDS-RTPS standard protocol 2010
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Presentation on the OMG Data-Distribution Service (DDS) Interoperability demo held during the Santa Clara OMG meeting on December 8, 2010. Four vendors demonstrated the wire-protocol interoperability of their DDS Implementations: RTI, PrismTech, Gallium Visual Systems, and Twin Oaks Computing. This is a demonstration of the use of the DDS Interoperability Wire Protocol standard (DDS-RTPS)
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The document compares OPC UA and DDS, two key protocols for industrial IoT. OPC UA is object-oriented and client-server, targeting simpler systems with device interchangeability needs. DDS is data-centric and peer-to-peer, more suitable for systems with primary software integration challenges. Both communities are working to ensure their technologies can work together, preserving investments as architectures evolve.Distributed Algorithms with DDS
The OMG DDS standard has recently received an incredible level of attention and press coverage due to its relevance for Consumer and Industrial IoT applications and its adoption as part of the Industrial Internet Consortium Reference Architecture. The main reason for the excitement in DDS stems from its data-centricity, efficiency, Internet-wide scalability, high-availability and configurability.
Although DDS provides a very feature rich platform for architecting distributed systems, it focuses on doing one thing well — namely data-sharing. As such it does not provide first-class support for abstractions such as distributed mutual exclusion, distributed barriers, leader election, consensus, atomic multicast, distributed queues, etc.
As a result, many architects tend to devise by themselves – assuming the DDS primitives as a foundation – the (hopefully correct) algorithms for classical problems such as fault-detection, leader election, consensus, distributed mutual exclusion, distributed barriers, atomic multicast, distributed queues, etc.
This Webcast explores DDS-based distributed algorithms for many classical, yet fundamental, problems in distributed systems. By attending the webcast you will learn how recurring problems arising in the design of distributed systems can be addressed using algorithm that are correct and perform well.
Deep Dive into the OPC UA / DDS Gateway Specification
One of the most important challenges that system designers and system integrators face when deploying complex Industrial Internet of Things (IoT) systems is the integration of different connectivity solutions and standards. At RTI, we are constantly working to accelerate the Industrial IoT revolution. Over the past few years, we have developed standard connectivity gateways to ensure that DDS systems can easily integrate with other core connectivity frameworks.
This year, we developed a standard OPC UA/DDS Gateway, a bridge between two of the most well-known Industrial IoT connectivity frameworks. We are excited to announce that the gateway was just adopted by the Object Management Group (OMG).
In this webinar, we will dive deeper into the importance of choosing a baseline core connectivity standard for the Industrial IoT and how to ensure all system components are fully integrated. Attendees will also learn:
How the OPC UA/DDS Gateway specification was developed and how it works
How to leverage the Gateway to enable DDS and OPC UA applications to interoperate transparently
About the first standard connectivity gateway released with RTI Web Integration Service in Connext DDS 5.3
Gateways are a critical component of system interoperability and we will keep working to help companies accelerate Industrial IoT adoption.
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The Inside Story: How OPC UA and DDS Can Work Together in Industrial Systems
The Inside Story: How OPC UA and DDS Can Work Together in Industrial Systems
Deep Dive into the OPC UA / DDS Gateway Specification
Deep Dive into the OPC UA / DDS Gateway Specification
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DDS-Security 1.2 - What's New? Stronger security for long-running systems
DDS Security Version 1.2 was adopted in 2024. This revision strengthens support for long runnings systems adding new cryptographic algorithms, certificate revocation, and hardness against DoS attacks.
DDS, the US Navy, and the Need for Distributed Software
From its first use case that enabled distributed communications for US Navy ships to the autonomous systems of today, the DDS family of standards has enabled new generations of applications to run reliably, rapidly and securely, regardless of distance or scale.
To commemorate the 20th year milestone, the DDS Foundation is creating presentations that highlight the 14 specifications in the DDS standard, along with selected real-world use cases.
This presentation introduces some of the original use-cases and experiments, along with a brief history of the Standards.
A recorded video of the presentation is available at this URL
https://www.brighttalk.com/webcast/12231/602966
DDS-TSN OMG Request for Proposals (RFP)
This Object Management Group (OMG) RFP solicits submissions identifying and defining mechanisms to achieve integration between DDS infrastructures and TSN networks. The goal is to provide all artifacts needed to support the design, deployment and execution of DDS systems over TSN networks.
The DDS-TSN integration specification sought shall realize the following functionality:
● Define mechanisms that provide the information required for TSN-enabled networks to calculate any network schedules needed to deploy a DDS system.
OMG RFP
● Identify those parts of the set of the IEEE TSN standards that are relevant for a DDS-TSN integration and indicate how the DDS aspects are mapped onto, or related to, the associated TSN aspects. Examples include TSN- standardized information models for calculating system-wide schedules and configuring network equipment.
● Identify and specify necessary extensions to the [DDSI-RTPS] and [DDS- SECURITY] specifications, if any, to allow DDS infrastructures to use TSN- enabled networks as their transport while maintaining interoperability between different DDS implementations.
● Identify and specify necessary extensions to the DDS and DDS- XML specification, if any, to allow declaration of TSN-specific properties or quality of service attributes.
A Converged Approach to Standards for Industrial Automation
A NEW ARCHITECTURE PROPOSAL TO INTEGRATE OPC UA, DDS & TSN.
Suppliers and end users need a complete solution to address the complexity of future industrial automation systems. These systems require:
• Interoperability to allow devices and independent software applications from multiple suppliers to work together seamlessly
• Extensibility to incorporate future large or intelligent systems
• Performance and flexibility to handle challenging deployments and use cases
• Robustness to guarantee continuity of operation despite partial failures
• Integrity and fine-grained security to protect against cyber attacks
• Widespread support for an industry standard
This document proposes a new technical architecture to build this future. The design combines the best of the OPC Unified Architecture (OPC UA), Data Distribution Service (DDS), and Time-Sensitive Networking (TSN) standards. It will connect the factory floor to the enterprise, sensors to cloud, and real-time devices to work cells. This proposal aims to define and standardize the architecture to unify the industry.
Overview of the DDS-XRCE specification
The document provides an overview of the DDS-XRCE specification, which defines an Agent-Client communication model to enable the use of the DDS data distribution service (DDS) in extremely resource-constrained networks. It describes the motivation for DDS-XRCE and its key aspects, including the message structure, interaction model, supported deployment scenarios, and how it provides security through the use of a client key.
DDS-Security Interoperability Demo - March 2018
The document describes a demonstration of interoperability between 5 vendor DDS security implementations using a shapes demo application. The demo consists of 6 scenarios that illustrate different aspects of DDS security configuration and functionality, including controlling access to the domain, enabling open access to selected topics, comparing data integrity vs encryption, protecting metadata, securing discovery, and fine-grained access control at the topic level. Each scenario varies the security governance and permission files to achieve the desired access control configuration.
Applying MBSE to the Industrial IoT: Using SysML with Connext DDS and Simulink
Applying MBSE to the Industrial IoT: Using SysML with Connext DDS and SimulinkGerardo Pardo-Castellote
This document summarizes a presentation about applying model-based systems engineering (MBSE) to industrial internet of things (IIoT) systems using the SysML modeling language, Connext DDS middleware, and Simulink. It discusses how SysML can be used to design interfaces, applications, and quality of service policies for DDS-connected systems. The presentation also provides examples of integrating MagicDraw, Simulink, and Connext DDS to enable translating SysML models into implementations and deployments of distributed IIoT applications and components.OPC UA/DDS Gateway version 1.0 Beta
This document defines an OPC UA/DDS gateway specification. It specifies how to bridge the OPC UA and DDS protocols by defining mappings between their data models, type systems and core services. This includes mapping OPC UA data types, services and subscriptions to DDS data types and topics as well as mapping DDS data types and the global data space to OPC UA address space objects. Configuration formats are also defined to allow configuration of OPC UA to DDS and DDS to OPC UA bridges.
DDS for eXtremely Resource Constrained Environments 1.0 Beta
This is the DDS-XRCE 1.0 Beta specification adopted by the OMG March 2018.
The purpose of DDS-XRCE is to enable resource-constrained devices to participate in DDS communication, while at the same time allowing those devices to be disconnected for long periods of time but still be discoverable by other DDS applications.
DDS-XRCE defines a wire protocol, the DDS-XRCE protocol, to be used between an XRCE Client and XRCE Agent. The XRCE Agent is a DDS Participant in the DDS Global Data Space. The DDS-XRCE protocol allows the client to use the XRCE Agent as a proxy in order to produce and consume data in the DDS Global Data Space.
DDS-Security Interoperability Demo - December 2017
Demonstrates interoperability of 5 independent products that implement the Data-Distribution Service (DDS) Security Standard
(https://www.omg.org/spec/DDS-SECURITY/).
Tests the following implementations: RTI Connext DDS, Twin Oaks Computing CoreDX DDS, Kongsberg InterComm DDS, ADLink Vortex DDS Cafe, and Object Computing Inc OpenDDS.
DDS-Security Interoperability Demo - September 2017
Demonstrates interoperability of 3 independent products that implement the Data-Distribution Service (DDS) Security Standard
(https://www.omg.org/spec/DDS-SECURITY/).
Tests the following implementations: RTI Connext DDS, Twin Oaks Computing CoreDX DDS, and Kongsberg InterComm DDS.
Extensible Types for DDS (DDS-XTYPES) version 1.2
This specification provides the following additional facilities to DDS [DDS] implementations and users:
* Type System. The specification defines a model of the data types that can be used for DDS Topics. The type system is formally defined using UML. The Type System is de- fined in section 7.2 and its subsections. The structural model of this system is defined in the Type System Model in section 7.2.2. The framework under which types can be modi- fied over time is summarized in section 7.2.3, “Type Extensibility and Mutability.” The concrete rules under which the concepts from 7.2.2 and 7.2.3 come together to define compatibility in the face of such modifications are defined in section 7.2.4, “Type Com- patibility.”
* Type Representations. The specification defines the ways in which types described by the Type System may be externalized such that they can be stored in a file or communi- cated over a network. The specification adds additional Type Representations beyond the
DDS-XTypes version 1.2 1
one (IDL [IDL41]) already implied by the DDS specification. Several Type Representa- tions are specified in the subsections of section 7.3. These include IDL (7.3.1), XML (7.3.2), XML Schema (XSD) (7.3.3), and TypeObject (7.3.4).
* Data Representation. The specification defines multiple ways in which objects of the types defined by the Type System may be externalized such that they can be stored in a file or communicated over a network. (This is also commonly referred as “data serializa- tion” or “data marshaling.”) The specification extends and generalizes the mechanisms already defined by the DDS Interoperability specification [RTPS]. The specification in- cludes Data Representations that support data type evolution, that is, allow a data type to change in certain well-defined ways without breaking communication. Two Data Repre- sentations are specified in the subsections of section 7.4. These are Extended CDR (7.4.1, 7.4.2, and 7.4.3) and XML (7.4.4).
* Language Binding. The specification defines multiple ways in which applications can access the state of objects defined by the Type System. The submission extends and gen- eralizes the mechanism currently implied by the DDS specification (“Plain Language Binding”) and adds a Dynamic Language Binding that allows application to access data without compile-time knowledge of its type. The specification also defines an API to de- fine and manipulate data types programmatically. Two Language Bindings are specified in the subsections of section 7.5. These are the Plain Language Binding and the Dynamic Language Binding.
DDS-Security version 1.1
The document describes version 1.1 of the DDS Security specification which defines a security model and plugin architecture to provide information assurance capabilities to DDS implementations, including defining builtin plugins for authentication, access control, encryption, and logging; it also lists normative references and provides an overview of the specification's scope and conformance points.
Interface Definition Language (IDL) version 4.2
This document describes the Interface Definition Language (IDL) version 4.2 specification published by the Object Management Group (OMG). It defines the syntax and semantics of IDL, which is used to define interfaces, data types, exceptions, modules and other elements used in CORBA, CCM, and other OMG specifications. The document includes sections on lexical conventions, grammar, scoping rules, standardized annotations, and CORBA/CCM profiles supported by IDL. It is intended to provide a standard way to define interfaces that are independent of specific programming languages.
DDS Security Specification version 1.0
This the the formal version 1.0 of the DDS Security specification released September 2016. OMG document number formal/2016-08-01.
DDS-Security defines the Security Model and Service Plugin Interface (SPI) architecture for compliant DDS implementations.
The DDS Security Model is enforced by the invocation of these SPIs by the DDS implementation. This specification also defines a set of builtin implementations of these SPIs.
* The specified builtin SPI implementations enable out-of-the box security and interoperability between compliant DDS applications.
* The use of SPIs allows DDS users to customize the behavior and technologies that the DDS implementations use for Information Assurance, specifically customization of Authentication, Access Control, Encryption, Message Authentication, Digital Signing, Logging and Data Tagging.
DDS for eXtremely Resource Constrained Environments
This specification is a response to the OMG RFP "eXtremely Resource Constrained Environments DDS (DDS- XRCE)"
It defines a DDS-XRCE Service based on a client-server protocol between a resource constrained, low-powered device (client) and an Agent (the server) that enables the device to communicate with a DDS network and publish and subscribe to topics in a DDS domain. The specifications purpose and scope is to ensure that applications based on different vendor’ implementations of the DDS-XRCE Service are compatible and interoperable.
This is the Joint submission by RTI, TwinOaks, and eProsima. Updated September 2017, OMG document number mars/2017-09-18.
DDS-XRCE - Revised Submission Presentation (September 2017)
Presentation of the joint revised submission (RTI, TwinOaks, eProsima) to the DDS-XRCE (DDS for Resource Constrained Environments) RFP.
DDS-XRCE (Extremely Resource Constrained Environments)
DDS for Extremely Resource Constrained Networks/Environments
(Draft Specification) updated June 2017.
Joint submission by RTI, TwinOaks and eProsima
DDS - The Proven Data Connectivity Standard for the Industrial IoT (IIoT)
The document discusses DDS (Data Distribution Service) as the proven data connectivity standard for industrial IoT (IIoT). It notes that DDS addresses the key characteristics of reliability, scalability, safety, security and resiliency required for large, heterogeneous IIoT systems. The document also discusses the Industrial Internet Consortium's efforts to develop a common architecture connecting sensors to the cloud across industries. It highlights RTI's role in numerous projects and standards efforts related to IIoT.
Industrial IOT Data Connectivity Standard
Presentation at the 2016 IIOT Challenges and Opportunities Workshop.
The next wave of Industrial Internet applications will connect machines and devices together into functioning, intelligent systems with capabilities beyond anything possible today. These systems fundamentally depend on connectivity and information exchange to derive knowledge and make "smart decisions". They require a much higher level of reliability and security than "Consumer" IoT applications. OMG's Data-Distribution Service for Real-Time Systems (DDS) is the premier open middleware standard directly addressing publish-subscribe communications for Industrial IoT applications. It provides a protocol that meets the demanding security, scalability, performance, and Quality of Service requirements of IIoT applications spanning connected machines, enterprise systems, and mobile devices.This presentation will use concrete use cases to introduce DDS and examine why energy, advanced medical, asset-tracking, transportation, and military systems choose to base their designs on DDS.
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- 3. Who is participating? PrismTech Real-Time Innovations TwinOaks Computing Gallium Visual Systems
Editor's Notes
- Point: we really know real-time and performance. Profiling, memory usage, os tracing & optimization, data flow and control.
- Change program types as needed (Air Defense, Naval Display … etc) $1.7 Billion revenue in 2007 with 4200 employees