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ODL Magnesium: New Projects, New Service Provider Features, and Loads of Performance Improvements

By Blog

By Abhijit Kumbhare, OpenDaylight TSC Chair 

The OpenDaylight community is pleased to announce the availability of the 12th release of the most widely deployed open source SDN controller platform, OpenDaylight Magnesium!  In addition to ongoing deployments, maturity and stability, the release brings two new projects, new features that help with service provider use cases, deeper cross-project collaboration with ONAP, and improvements in S3P (stability, security, scalability and performance). 

OpenDaylight celebrates its seventh year as a project (!!!) and introduces Magnesium as the world enters an unprecedented time, unlike anything this generation has ever seen. I am continually impressed and humbled by the strength and cohesiveness of the ODL community, over the past several years now, especially, in this uncertain time. Thank you to all involved! Read on for release highlights. 

Magnesium Highlights

  • New projects: The Magnesium release includes two new projects—DetNet and Plastic. The new projects deal with deterministic networking for performance sensitive traffic and model-to-model translations, respectively. 
  • New Features for Service Provider Use Cases: The community contributed several new features to the TransportPCE and BGPCEP projects, making OpenDaylight even better suited to service provider use cases. TransportPCE took a step forward in the control of open optical infrastructure domains while the BGPCEP project added support for missing features from RFC 5440 and a BGP-LS topology provider for segment routing. In addition to these two major areas of enhancements, the Genius project, that provides generic network interfaces, utilities, and services, added support for Bidirectional Forwarding Detection (BFD) for OpenFlow tunnels. This makes it easier to detect if the tunnel is bidirectional or not.
  • ONAP Integration: the OpenDaylight community provided an optimized distribution of the Magnesium release to the ONAP project so that OpenDaylight can be consumed efficiently by a number of ONAP controllers. Distribution is being integrated successfully by the ONAP Common Controller Software Development Kit (CCSDK) project and will be available in the upcoming ONAP Frankfurt release.
  • Improved Functionality, Scalability, and Stability: The Magnesium release continued to make progress around S3P. For example, the OpenFlow plugin and the Netvirt project improved cluster stability, scale, and performance. The projects also include updated documentation, upgrade process description, and numerous bug fixes. The Daexim (data export/import) project has improved scalability and supports processing of very large data sets. Projects such as Genius, OVSDB, NETCONF, and AAA include a variety of improvements in the areas of scalability, performance, and bug fixes. Moreover, the Magnesium release includes Java Developer Kit (JDK) 11 that brings with it a number of security features such as Transport Layer Security (TLS) 1.3, newer ciphers, key agreement improvements, and root certificate additions. In total, Magnesium includes 70+ improvements and bug fixes!

In addition to new features, projects, integrations, and updates, ODL is seeing ongoing industry momentum. Member company Lumina Networks contributed to the Plastic and BGPCEP projects and also released updates to the  Lumina SDN Controller 11.2.0 to align to theOpenDaylight Sodium release.An early version of the Magnesium release TransportPCE project was used in a live demo at the Optical Fiber Communications Conference (OFC) 2020 in San Diego, CA, to show interoperability of OpenROADM equipment from six suppliers and to control a low latency optical layer build from ROADMs and OTN flexponders. Orange played a central role in moving the project forward. And continued their contributions to the core OpenDaylight platform as well as individual plugins; specific contributions covered JDK 11, YANG Parser, In-memory data tree, OVSDB, and distributed datastore efforts.

Visit the Magnesium Release Homepage

Download Magnesium

Comments from key contributors:

PANTHEON.Tech: “’s focus remained on the core platform, while we also dabbled into individual plugins to deliver significant performance, scalability and correctness improvements. We have successfully transitioned the OpenDaylight codebase to require Java 11 and improved the YANG Parser, In-memory Data Tree, OVSDB Project & Distributed Datastore.”

Orange: “TransportPCE magnesium release is a major step forward in the control of open optical infrastructure domains. It completes previous releases focusing on an OpenROADM based WDM layer, proposing an experimental support for OTN, that will be hardened over the magnesium release train. The Northbound interface is upgraded to OpenROADM Service 5.1. Current set of APIs have been enriched to expose an abstracted WDM/OTN topology in accordance with T-API version 2.1.2 to higher layer controllers/orchestrator and to provide an interconnection with the GNPy tool for path calculation/validation including nonlinear impairments. An experimental inventory feature is also introduced for OpenROADM 1.2.1 devices, planning an extended support to 2.2.1 in the next magnesium releases.”

Lumina Networks: “The Magnesium release is a great example of the community’s commitment to enabling open control of multi-vendor networks. With this release, we were happy to represent the interests of several network operators to continue to progress to the functionality and scalability of heterogeneous environments. The Plastic project in particular, is a data model translator which breaks the dependencies on vendor libraries and plugins. We’re thrilled to work with the community on projects like these which ease the extensibility of open source network control.”

OpenDaylight, Most Pervasive Open Source SDN Controller, Celebrates Sixth Anniversary with Neon Release

By Announcement
  • In just 6 years, OpenDaylight boasts 10 Releases, 1000+ authors/submitters, 100K+ commits, and powers networks of 1B+ global subscribers
  • Neon release hardens SDN controller features and advances support for edge, cloud native, and downstream projects like ONAP, Kubernetes, and OpenStack

SAN FRANCISCO  March 26, 2019 LF Networking (LFN), which facilitates collaboration and operational excellence across networking projects, today announced OpenDaylight (ODL), the most pervasive open source Software Defined Networking (SDN) controller, celebrates its sixth anniversary with the release of OpenDaylight Neon.

The Linux Foundation’s first networking project and now part of LFN, OpenDaylight was founded in 2013 as an open source framework to accelerate adoption, foster innovation, and create a more open and transparent approach to SDN. Today, ODL has become the most pervasive open source SDN controller that helps power over 1B global network subscribers. Its 10th release, OpenDaylight Neon, demonstrates industry commitment to fostering an open, scalable and interoperable networking solution and supporting ecosystem of developers, integrators, and users.

“This has been possible in large part due to the modular and extensible software architecture which makes it possible to use OpenDaylight in a variety of use cases,” said Abhijit Kumbhare, OpenDaylight Technical Steering Committee chair.

“Neon speaks to OpenDaylight’s longevity as well as its integration with other projects like Kubernetes, ONAP, OPNFV, and OpenStack,” said Phil Robb, vice president, Operations, Networking, and Orchestration, the Linux Foundation. “I am continually impressed by the community’s cohesiveness in delivering platform releases with updates and features that enhance evolving SDN use cases.”

Most Pervasive Open Source SDN Controller

  • Scope, diversity and deployments: In just six years, OpenDaylight has delivered 10 releases with the help of 1000+ authors/submitters who contributed 100K+ commits, across dozens of unique organizations. Additionally, ODL-based solutions help power over 1B global network subscribers.
  • Support from top vendors, end users: Over time, ODL community contributions have moved from a select group of initial creators to a diverse set of global users and vendors, all  building and leveraging solutions based on ODL today.
  • In-demand upstream: As a robust open source SDN controller, ODL continues to be sought-after by key downstream projects across layers of the network stack, including Akraino Edge Stack, Kubernetes, OpenStack, ONAP, OPNFV, and more.

More industry partners continue to deploy the ODL platform and realize the power of open SDN/NFV. Recent examples include:

  • Coweaver, one of the largest optical network system makers in South Korea, used ODL to build its Network Management Service (NMS), which is leveraged by South Korean and global vendors.
  • FRINX’s UniConfig, now powered by’s, is based on OpenDaylight and enables vendors to build and deploy applications faster
  • Inspur’s OpenDaylight-based SDN controller is used to manage virtual and physical devices for both enterprise and government cloud environments in China
  • Partnership between NoviFlow and Lumina Networks, a provider of OpenDaylight-based SDN Controller solutions, who together are using OpenDaylight as part of a solution to create and deliver an intent-based Terabit-scale network that reduces costs and network complexity.
  • Lumina Networks also just announced Lumina Extension & Adaptation Platform, LEAP, which is a platform that extends the benefits of OpenDaylight to legacy devices as well as advanced model-to-model translation, and a cloud native app (or MicroServices) dev environment.
  • Telecom Argentina has chosen OpenDaylight for a wide range of use cases, including the enablement of CDN traffic optimization capability that improves customer experience and reduces data transport costs
  • Integration with other open source communities continues to grow, including collaborations with OpenStack, Kubernetes, OPNFV, and ONAP. ONAP is using OpenDaylight in its APP-C, SDN-C, and SDN-R projects for use cases like 5G and CCVPN

Meanwhile, SDN adopters   including AT&T, CableLabs, China Mobile, Ericsson,, Orange, Tencent, Verizon, and more – continue to leverage OpenDaylight within their networks and solutions. More details on OpenDaylight user stories are available here.  

OpenDaylight Neon brings best-in-class functionality for key SDN use cases

Neon includes updated features important to networking use cases, such as optical transport networking, WAN connectivity and routing, as well as virtual networking in cloud and edge environments. Neon also features new stability and scalability enhancements, and cements the project’s leadership in working with other open source communities to expedite next-generation networking solutions. Specific enhancements include:

  • Cloud/Edge Network Virtualization features have been hardened with the Neon release to further enhance the suitability of OpenDaylight in production networks
  • Optical Transport Infrastructure Control, now offers new features that ensure interoperability with higher level controllers using an open northbound API
  • WAN Connectivity. Building on Fluorine’s mature BGP stack, Neon brings enhancements that improve error reporting, restarts and network stability
  • Improved Stability and Reliability. Neon includes improvements in stability and scale, in addition to functional enhancements and bug fixes. OpenDaylight continues to undergo infrastructure enhancements making it easier for vendors and downstream open source projects to rapidly put-together and deploy OpenDaylight-dependent products and platforms

More details on OpenDaylight Neon are available here:

Looking Ahead

In conjunction with the Open Networking Summit (ONS) April 3-5 in San Jose, Calif., OpenDaylight will host a Developer Forum, April 1-2, 2019, for its next release, “Sodium.” More details are available here: There will also be a demo of OpenDaylight’s integration with Network Service Mesh in the LFN Booth at ONS. ONAP Dublin, slated for mid 2019, will include the OpenDaylight Fluorine release to support the SDN-C and APP-C modules.

Ongoing Support for OpenDaylight


“We are pleased to congratulate OpenDaylight on its sixth birthday,” said Brian Freeman, Distinguished Member Technical Staff, AT&T Labs. “AT&T has been using OpenDaylight since Hydrogen, with production deployments since Helium in 2015. Today, we have global deployments with L3 applications using BGPCEP and NETCONF. Our deployments span control of L0 OpenROADM devices to L7 Mobility PNFs and VNFs. Needless to say, we look forward to test-driving Neon and deploying it to production.”


“OpenDaylight has massively evolved in its six short years and I’m incredibly proud to have been part of the community from the beginning,” said Dave Ward, CTO of Engineering and Chief Architect, Cisco.  “With a large, sustainable community showing strong collaboration across a diverse set of developers, vendors, and end users, its become the de facto open source SDN controller for the industry. It’s great to see how many other hugely impactful OSS projects are using ODL at their core. I’m very excited to watch it’s evolution into the future. Happy Birthday ODL!”


“Congratulations to the OpenDaylight community on both the Neon release, and the longevity that it’s sixth anniversary represents,” said Eric Ericsson, Head of Solution line NFVi, Ericsson. “Ericsson continues actively to upstream to the  OpenDaylight community and to use the ODL open source software in our commercial NFVi solutions, that enable telecom operators evolved to 5G and to be more productive and lower OPEX and CAPEX expenditures. This includes solutions for onboarding cloud based services, as well as offering intra and inter cloud network automation, multi tenancy and other advanced networking use cases. Ericsson has so far deployed ODL software to  more than 50 service providers worldwide”.


“Warm congratulations to the OpenDaylight community on the release of Neon and project’s sixth anniversary,”  said Max Zhang, CTO, Inspur Cloud Service Group. “Inspur’s Cloud Engine SDN Controller 2.0, based on OpenDaylight Nitrogen SR2 release, has been deployed in both government and enterprise clouds environments. It helps our customers to deploy businesses quickly and flexibly, automate network management, and significantly reduce the cost of operation and maintenance.  Future Inspur Cloud Engine SDN Controller releases will continue to use the newest and most stable OpenDaylight release to provide even more features for our customers.”

Lumina Networks

“The digital transformation OpenDaylight was built to support, isn’t easy,”  said Andrew Coward, CEO of Lumina Networks. “But in six years, this impressive effort of community innovation has managed to start returning network control and service innovation to the Service Providers. It’s an honor to contribute to our shared goals and continue to reach these release milestones.”

Red Hat

“The OpenDaylight project started a little more than six years ago with an ambitious set of goals, creating a community from scratch to build an evolving, flexible and open source software-defined networking platform,” said Chris Wright, CTO, Red Hat. “Over those six years, we’ve seen the power of community-driven innovation take OpenDaylight from an aspiration to a thriving open source ecosystem of SDN developers and users. Congratulations to the ODL community on their continued success with the launch of the Neon release.”

About The Linux Foundation

Founded in 2000, the Linux Foundation is supported by more than 1,000 members and is the world’s leading home for collaboration on open source software, open standards, open data, and open hardware. Linux Foundation’s projects are critical to the world’s infrastructure including Linux, Kubernetes, Node.js, and more.  The Linux Foundation’s methodology focuses on leveraging best practices and addressing the needs of contributors, users and solution providers to create sustainable models for open collaboration. For more information, please visit us at


The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see our trademark usage page: Linux is a registered trademark of Linus Torvalds.

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Jill Lovato

The Linux Foundation

Linux Foundation’s OpenDaylight Fluorine Release Brings Streamlined Support for Cloud, Edge and WAN Solutions

By Announcement

Most pervasive open source SDN controller issues ninth platform release as more users and open source platforms leverage OpenDaylight Project to achieve promise of SDN/NFV

SAN FRANCISCO, September 13, 2018–The OpenDaylight Project, the leading open source platform for programmable, software-defined networks, today announced its ninth release, OpenDaylight Fluorine. The latest version brings major advancements for solution providers through key enhancements to the platform, including simplified packaging to speed solution development and enhanced capabilities for key use cases.

“Fluorine is one of the most streamlined releases to date for OpenDaylight, delivering a core set of mature components needed for most major use cases in a ‘managed release’ for easy consumption by commercial and in-house solution providers, as well as by downstream projects such as ONAP and OpenStack,” said Phil Robb, vice president, Operations, Networking, and Orchestration, The Linux Foundation. In addition, the release includes critical updates to clustering and service assurance to improve scalability, security and reliability to support our large end user deployments – including solutions from Cornell University,, Orange,  Tencent, and others using all OpenDaylight to further their open networking initiatives.”

OpenDaylight is also seeing ongoing industry momentum as more users deploy the platform to realize the power of open SDN/NFV.  For example,, a leading internet-related services and platforms company based in Brazil, is using OpenDaylight as their primary SDN controller platform. A new case study details the benefits the company is seeing from using OpenDaylight to deploy ACLs on virtual switches. FRINX has demonstrated customer success stories with its OpenDaylight Distribution together with SoftBank and China Telecom BRI while Red Hat’s new functional release in Red Hat OpenStack Platform (OSP) version 13 also features OpenDaylight.

OpenDaylight’s latest release includes new features important for cloud and edge environments, service function chaining, WAN connectivity, and optical transport. More details on what’s new in OpenDaylight Fluorine are outlined below.

Enhanced Functionality for Key SDN  Use Cases


  • WAN Connectivity. Fluorine includes an extremely mature and robust BGP stack, with improvements in BGPCEP and BGP/MPLS multicast support, making OpenDaylight a clear leader in SD-WAN innovation.
  • Optical Transport. Work on optical transport, including the TransportPCE project, has been nurtured within OpenDaylight for some time. Fluorine formally releases Transport PCE for the first time, as a component of the managed release. In addition, Fluorine  provides a new reference implementation for OpenROADM-based optical infrastructures control.
  • Cloud/edge Computing. Several new features were added to further enhance support for network virtualization within cloud and edge computing environments. This includes improved IPv6 support, support for both stateful and stateless security groups, and SR-IOV hardware offload for OVS. Much of this work has been developed for OpenStack environments, and is now being leveraged to integrate ODL with the Container Orchestration Engine for Kubernetes environments.  
  • Service Function Chaining (SFC). Updates to SFC accelerate delivery of services like network slicing, now supported by OpenvSwitch (OVS), allowing for improved adoption of SFC in the marketplace.


Increased Stability and Reliability

The OpenDaylight Fluorine release brings improvements in stability and scale, including complex bug fixes and enhancements to OpenDaylight infrastructure clustering capability. In addition, the new managed release process facilitates more thorough integration testing of the mature components, ensuring that release as a whole operates seamlessly.

Continued Cross-Community Integration

OpenDaylight continued its deep engagement with other open source projects and standards bodies such as OpenStack, OPNFV, Kubernetes, and ONAP. Notably, ODL code is integrated into OPNFV’s CI/CD toolchain, which slashes the time it takes the OPNFV community to provide feedback to ODL contributors from months to days.

Looking Ahead

The OpenDaylight project is hosting a Developer Forum in Amsterdam from September 23-24, in advance of the next platform release, Neon. The Neon release is expected in early 2019. Additional information and registration details can be found here.

About the Linux Foundation

The Linux Foundation is the organization of choice for the world’s top developers and companies to build ecosystems that accelerate open technology development and commercial adoption. Together with the worldwide open source community, it is solving the hardest technology problems by creating the largest shared technology investment in history. Founded in 2000, The Linux Foundation today provides tools, training and events to scale any open source project, which together deliver an economic impact not achievable by any one company. More information can be found at

The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see our trademark usage page: Linux is a registered trademark of Linus Torvalds.

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OpenDaylight Oxygen: With Age Comes Maturity and Production Stability

By Blog

This post originally appeared on the Inocybe Technologies blog

With development efforts focused on code cleanup, bug fixing, and security, OpenDaylight Oxygen showcases platform maturity with a keen focus on quality.  Although the community has rallied around stabilizing and improving existing functionality to reassure operational reliability, there were also some great features contributed.

Under the hood, all ODL projects upgraded odlparent and yangtools versions.  This was a cross project effort involving every project in the Oxygen distribution.  Changes adapted from the odlparent upgrade involve enforcing better code quality across the project through enhanced checkstyle and findbugs rules, as well as dependency upgrades.  One noteworthy upgrade, the move from karaf 4.0.9 to 4.1.3, enables runtime resolution of feature versions based on feature ranges. This unlocks developer agility, catalyzing the adaptation of future upgrades.  Yangtools contributions centralized around bug fixes and better code organization. Another noteworthy change is that the in-memory data tree now enforces mandatory leaf node presence for operational store by default.  This behaviour change may cause a few surprises during application upgrade, and can be disabled as a stop-gap measure, although it is not recommended.

The rest of the kernel contributors also focused mostly on bug-fixing during the Oxygen release, although there were a few other noteworthy changes.  The MD-SAL project team continued development on the second version of the binding specification, which will be utilized in future releases of ODL. The current plan is to stick with the first version of the binding specification for Fluorine though, and the community is working to close several gaps and deficiencies in what is currently available.  The NETCONF development team contributed functionality to utilize key based authentication with southbound NETCONF devices, which hitherto was limited to basic authentication. The AAA team debuted a new MD-SAL based authentication Realm which enables replication of ODL account information across a cluster, although it is not enabled by default.

A lot of work was done to complete the transition of all ODL projects off the configuration subsystem.  The configuration subsystem was replaced with blueprint many releases ago, but has been maintained as a deprecated system to ensure proper transition for non-ODL projects.  There are plans to remove the configuration subsystem in Fluorine, since the code is costly to maintain further into the future. However, there may be some compatibility layer maintained in Fluorine to bridge the gap before complete removal.  Additional work was done to transition projects off the DataChangeListener (DCL) in favor of DataTreeChangeListener (DTCL), which showcases much better performance. The controller development team plans to remove DCL APIs in Fluorine, so existing applications must migrate to using DTCL.  The Removal of core APIs is tricky, since the ODL development community does not have much insight into how they are consumed outside of the open-source codebase. However, the general strategy is to deprecate, maintain for several releases with clear messaging of upcoming demise, followed by actual removal.  Since DCL has been deprecated since Beryllium, it is time to finally get rid of it altogether. It also allows for continued transition off controller MD-SAL APIs, which have unfortunately been carried as baggage for a long time.

The protocol and application stacks received some upgrades.  BGP added support for EVPN VPWS Flexible Cross-Connect Service based on draft-sajassi-bess-evpn-vpws-fxc.  The netvirt & genius projects added support for IPv6 enabled L3VPNs utilizing BGPVPNs as well as support for MPLS/GRE tunnel creation for L3VPNS in OVS 2.8+.  Although less visible to end-users, these projects made great improvements in transaction chaining and threading under the hood. OVSDB and Openflowplugin projects focused efforts on closing several clustering bugs as well as creating more user-friendly libraries for utilizing functionality.  The Service Function Chaining project added support for statistics for Rendered Service Paths and bump-in-the-wire Service Functions, thus improving the usability of SFC from an operational standpoint. The JSON-RPC project was officially added to the release, and contains bindings to interact with ODL utilizing ZMQ.  This accelerates integration of non-Java based projects with the controller.

The pattern in the ODL development community is trending towards improving what exists rather than reinventing the wheel.  Each subsequent release comes with a facelift for existing projects, which should come as no surprise as the project continues to mature.

For additional information on the OpenDaylight Oxygen release, please visit The Linux Foundation’s Oxygen release blog:

Written by Ryan Goulding, Principal Software Engineer at Inocybe Technologies.

OpenDaylight Nitrogen Release: It’s All About The Apache Karaf Upgrade (by Ryan Goulding)

By Blog

This blog was originally published on Inocybe Technologies’ blog here.

With the release of Nitrogen, OpenDaylight continues to solidify itself as the de facto open networking controller standard.  Although the release contains widespread enhancements and improvements,  the main focus of the OpenDaylight Nitrogen release is the major version upgrade of the underlying Apache Karaf container from 3.0.8 to 4.0.9.  Among other functions, Apache Karaf is used to coordinate ODL microservices and lifecycle, provide a common logging infrastructure, enable remote management through JMX and a unix-like shell, facilitate dynamic configuration and hot deployment, and provide a common set of base resources across the product.  As such, Karaf has several responsibilities and has served as a crucial piece of infrastructure to the overall OpenDaylight architecture since its inclusion in the Helium release. It’s kind of a big deal ;)!

Since ODL Karaf dependency management is centralized in the odlparent project, an upgrade may initially seem trivial—  just a one-liner version bump, right?  Unfortunately, that is far from the case.  As previously stated, each release of Karaf provides a set of common dependencies that should remain constant across applications in the container.  This is done in order to centralize on a base set of hypothetically stable, interoperable and secure dependencies based on what is available from upstream projects at the time.  Thus, even a minor version bump of the Karaf container version in odlparent can result in the need for a number of changes cascading across consuming projects in ODL— especially if Karaf’s upstream dependencies contain API changes.

Major versions of Apache Karaf, which often contain new features, dependencies, frameworks, and API changes, are arduous and expensive to consume.  Moving to a new Karaf version becomes similar to transferring an existing building onto a new foundation;  there will be some jagged pieces along the bottom that will need work to fit properly.  With that said, it is critically important for ODL to keep current with Karaf releases in order to consume security fixes and avoid upstream dependency end-of-life scenarios.  Centralization of common ODL dependencies in odlparent eases some of the heartburn associated with cross-project upgrades.  Inclusion of the functionality to utilize version ranges in ODL, which continues to be developed, will ease upgrade woes in future releases.  Additionally, a significant amount of testing infrastructure was added in the Nitrogen release timeframe to enhance runtime dependency resolution checks and identify problems earlier and more predictably.

Another noteworthy change which occurred in the Nitrogen timeframe is the decision of odlparent contributors to disaggregate the subproject release from the traditional simultaneous release plan.  This means that odlparent now releases independently of the rest of ODL projects, and consuming projects depend on a released version rather than a snapshot.  Snapshot artifacts are prone to change from day to day, which can cause nuisance to consumers.  For example, imagine that a snippet of code compiles on Tuesday, and without any changes, fails to compile Wednesday morning.  This problem is avoided by depending on released artifacts, as released artifacts should never change without a proper version bump.  Consuming projects can treat the released odlparent artifacts as true upstream dependencies, and upgrades of those dependencies are now consumed with greater precision and control.  Breaking odlparent out of the simultaneous release additionally allows the odlparent development team to continue to perform necessary upgrades of widely used core dependencies without breaking downstream projects, enabling a disaggregated and saner development workflow.  Although odlparent is the only project to break off from the simultaneous release during the Nitrogen timeframe, contributors of other projects have expressed interest in following a similar plan in the near future.  This is exciting for developers and users alike, as it assists in breaking down the traditionally monolithic release process of OpenDaylight into more manageable chunks.

Maturity of the platform and its community is recognized by the decision to invest in an infrastructure focused release.  Focus is garnered around not only doing things, but doing them right.  Upgrade of the Karaf version in ODL Nitrogen is a double-edged sword;  the foundation of ODL is greatly improved but at the expense of requiring the sole focus of an entire, albeit shortened, release cycle to adapt to changes.  The improvements weren’t free, but were necessary in order to continue to deliver a stable and secure platform.  Fortunately for ODL application developers and consumers, several articles and code examples are available which provide assistance in transitioning to the updated ODL Nitrogen release.  Additionally, the support lifecycle of the previous release, ODL Carbon, has been extended beyond the traditional lifespan in order to help ease transition woes.

If you’d like to learn more about the OpenDaylight Nitrogen Release, the ODL Foundation’s Nitrogen blog is available here: Dive in and download OpenDaylight’s Nitrogen release today from:

Written by Ryan Goulding, Principal Software Engineer at Inocybe Technologies.

Enhanced Stability, Security and Network Programmability (by Ryan Goulding)

By Blog

This post was originally published on Inocybe Technologies blog, reposted with their permission.

End users can rest assured that the early days of OpenDaylight releases that were jam-packed with tens-to-hundreds of new under-supported features are far gone. The latest release, Carbon, showcases the maturity and production-grade quality that Platform users have come to expect. Carbon provides significant improvements to security, stability and network programmability.

A driving goal for the OpenDaylight Carbon release is to improve the stability and reliability of ODL services.  Namely, several projects are converted to use Aries Blueprint for service activation over the bespoke configuration subsystem, an effort which was started in Boron and is improved in Carbon.  Blueprint is better documented and easier to debug, resulting in a more effective and satisfying application development experience.  Since Blueprint supports parallel service activation, there is less latency between starting the controller and utilizing the provided services.  Upgradability is improved through the Blueprint adoption, since efforts are made to separate application configuration from code wiring.  This is useful since most operators upgrading OpenDaylight wish to maintain configuration between releases, but pick up internal wiring changes.

Initial groundwork to add Apache Karaf 4.X features for each project was performed in hopes of transitioning to the newer container in the Nitrogen release.  Additionally, enhanced testing was added to ensure that features import all of the appropriate runtime bundles, improving stability of ODL features.  This groundwork should greatly help the community developers to perform the very non-trivial Karaf upgrade during the Nitrogen release cycle.

The RFC 6020 implementation of the YANG 1.0 Data Modeling Language is superseded by an implementation of RFC 7950, the YANG 1.1 Data Modeling Language.  For application developers this means that they’re now able to use YANG 1.1 constructs in their YANG models. On a similar note, interoperability with southbound NETCONF devices utilizing RFC 7950 is made possible in the Carbon release.

The clustered NETCONF implementation is greatly stabilized through re-architecture around the cluster singleton service, as well as greatly increased test coverage.  End users can expect a consistent clustered NETCONF experience to that of the Boron release, but have more peace of mind surrounding the stability of NETCONF in a distributed controller deployment.

A forward looking version of the MD-SAL Binding Specification version 2 is included in the Carbon release, though there are not yet any consuming applications.  The new version of the binding specification solves several deficiencies discovered in the original binding specification.  This implementation is Twirl-based, which has a similar function to the xtend implementation in the V1 spec, but generates the code in Scala instead of Java.  Don’t worry about running out to learn Scala; the generated Scala code is injected into the Java Runtime Environment, and is accessible to traditional Java clients.

Carbon contains an implementation of the recently (and finally) standardized RFC 8040, RESTCONF.  Hitherto, OpenDaylight users are probably most familiar interacting with the RESTCONF Draft 02 API.  The DRAFT 02 API still exists for compatibility purposes, since many pieces of software still rely on that API contract.  The new RFC 8040 RESTCONF API implementation is made available through a separate endpoint.  Users are encouraged to start exploring and using the standard version of the API, since it is still unclear how long the community should support the DRAFT 02 version.

Additionally, security of RESTCONF is improved through the addition of a model-based authorization schema in the AAA project.  Operators can now dynamically restrict sets of URL endpoints to specific classes of users at runtime.  This enhanced authorization mechanism is available for both RESTCONF versions.  AAA contributors have also added support for model-based certificate management.  Although the certificate management functionality is currently only integrated with OVSDB in the Carbon release, there are plans to provide hooks for use with other southbound protocols in the future.

An initial implementation of IETF Call Home based Draft 08 is added to the NETCONF project offering.  The implementation is currently not cluster aware, but offers the base functionality for Call Home functionality.  Overall, this improves the integration points for ODL, and enhances an operator’s ability to automate orchestration of ODL as part of a greater architecture.

Carbon debuts a new project called Daexim, a utility which allows the import and export of data from the MD-SAL datastore in JSON format.  Daexim is limited in the sense that it cannot tolerate YANG data model changes between releases.  However, developers can write external logic to manipulate data between import and export, providing for easier upgradability between releases of ODL.

Additionally, Carbon includes the first incarnation of jsonrpc, a project aimed towards enhancing external communication and federation with the controller.  For now, jsonrpc exposes a shim for ZMQ, a well tested, commodity message bus implementation.  Instead of utilizing RESTCONF, NETCONF or some other northbound interface, application developers can hook into the bus to manipulate data.  In essence, this unlocks the capability to write controller applications using non-JRE languages that support ZMQ integration.  This is compelling from the standpoint that it unlocks the ability for an entirely new set of developers to become involved with the project.

Overall, Carbon provides greater stability, security and enhanced network programability.  Groundwork is put in place to perform the Karaf upgrade in the Nitrogen release, and service activation is greatly stabilized and better tested to ensure a more consistent and friendly operational experience.  New functionality is added to help communicate with the controller, export data, and orchestrate ODL as part of a greater solution.  Dive in and download OpenDaylight’s Carbon release today from:

Written by Ryan Goulding, Senior Software Engineer at Inocybe Technologies.

Introducing OpenDaylight’s Sixth Platform Release, Carbon

By Blog

Carbon has been released! OpenDaylight’s sixth platform release, Carbon, adds new enhancements to better support Metro Ethernet and cable operators as well as Internet of Things (IoT) deployments. As OpenDaylight continues to mature, a growing number of member use cases are emerging from companies including CenturyLink, China Mobile, Inocybe Technologies and Tencent.

OpenDaylight’s latest release further advances the platform’s scalability and robustness, with new capabilities supporting multi-site deployments for geographic reach, application performance and fault tolerance. Southbound protocols OpenFlow and Netconf gained in scalability and features, as did various administrative utilities.

Carbon also streamlines service function chaining by providing an integrated framework for NFV management. Much of this integration work and new capabilities available in Carbon were showcased as part of a proposed “Nirvana Stack,” presented in Boston last month.

As these toolchains are further integrated into higher level open source projects like ONAP, OpenStack and OPNFV, they are increasingly enabling innovators to productively explore new use cases such as IoT.

To learn more about Carbon or download the release, visit here.

We would like to thank our supportive community of developers and members who helped make the release possible!

OpenDaylight Matures with Carbon Release and New Market Deployments

By Foundation News

The sixth release of the open SDN controller adds new enhancements to support IoT deployments and better integration with OpenStack  

SAN FRANCISCO, June 6, 2017–The OpenDaylight Project, the leading open source platform for programmable, software-defined networks, today announced its sixth release, Carbon. With this release, OpenDaylight adds new enhancements to better support Metro Ethernet and cable operators as well as Internet of Things (IoT) deployments.

“OpenDaylight-based networks are delivering business and consumer services to more than 1 billion subscribers around the globe today, as well as a growing number of users in the enterprise space,” said Phil Robb, Executive Director of OpenDaylight at The Linux Foundation. “Carbon delivers a deeper level of platform maturity, while solidifying the toolchains for leading use cases in private and hybrid cloud as well as the carrier market.”

OpenDaylight’s latest release further advances the platform’s scalability and robustness with new capabilities supporting multi-site deployments for geographic reach, application performance and fault tolerance. Southbound protocols OpenFlow and Netconf gained in scalability and features, as did various administrative utilities.

Carbon streamlines service function chaining by providing an integrated framework for NFV management. Much of Carbon’s integration work and new capabilities were showcased as part of a proposed “Nirvana Stack,” presented in Boston last month.

Carbon also supports a series of PCMM specs and other capabilities required by cable operators. It also improves operators’ ability to enable software applications and service orchestrators to configure and provision connectivity services in physical and virtual network elements–in particular, Carrier Ethernet services as defined by MEF Forum.

These toolchains are being incorporated as core components of higher-level open source frameworks, such as ONAP, OPNFV and OpenStack, as well as real-world implementations of designs from standards bodies such as MEF. These new combined stacks are increasingly enabling innovators to productively explore new use cases such as IoT.

Supporting quotes

China Mobile

“A SDN controller plays an important role for us to fast and flexibly launch services for public and private clouds, and it is a critical component in our next-generation network,” said YANG Zhiqiang, Deputy General Manager of China Mobile Research Institute. “The robustness of the OpenDaylight platform has enabled us to build our own controller and develop customized applications.”

Inocybe Technologies

Inocybe Technologies helps customers build and deploy production-grade products and services by leveraging the OpenDaylight platform as the foundation for numerous SDN deployments spanning a variety of industries, including healthcare, financial services, smart cities and industrial controls.

“We continue to see new use cases emerging for OpenDaylight, including our work with Avaya on supporting IoT,” said Mathieu Lemay, Chief Executive Officer of Inocybe Technologies. “Using OpenDaylight enabled us to develop an SDN architecture for IoT that is capable of managing and securing up to 168,000 connected devices, the largest implemented in the market today.”


As CenturyLink virtualizes its network, SDN controllers provide pivotal functionality. The diverse requirements within the network, datacenters and central offices demand flexibility from OpenDaylight and applications such as the Edge Access Controller.

“As part of our work to achieve full network virtualization, we have created our own virtualized Broadband Network Gateway (vBNG) using open source components including OpenDaylight and OpenStack,” said Adam Dunstan, Vice President of SDN/NFV Engineering at CenturyLink. “We used OpenDaylight software to build our SDN access controller because of its flexibility to work with legacy operations support systems as well as newer orchestration platforms.”


As a leading provider of internet services in China, Tencent has deepened its commitment to open source deploying OpenDaylight as a standard across their network. The open SDN platform provides Tencent with the flexibility and maturity to accommodate a growing user base and the massive scale required to provide those users with high quality services.

“We’ve selected OpenDaylight as our standard SDN controller as it has enabled us to build an agile infrastructure that can support our diverse network requirements,” said Wade Shao, deputy director of network architecture center, Tencent. “We are also hoping our partners will work together with us to build on and contribute to OpenDaylight, as we believe it matches our network strategy.”

About the OpenDaylight Project

The OpenDaylight Project is a collaborative open source project that aims to accelerate the adoption of Software-Defined Networking (SDN) and Network Functions Virtualization (NFV). Founded by industry leaders and open to all, the OpenDaylight community is developing a common, open SDN platform that fosters new innovation and reduces risk. Get involved:

OpenDaylight is a project at The Linux Foundation. Linux Foundation projects harness the power of collaborative development to fuel innovation across industries and ecosystems.

Additional Resources