Software-Defined Networking (SDN), as defined by the ONF, is the physical separation of the network control plane from the forwarding plane, and where a control plane controls several devices. This concise definition gives the essence of what we can achieve through SDN: Separation of the network control plane from the forwarding plane, also known as data plane, where the control plane can be implemented as a (set of) software program that controls multiple network devices. SDN enables us to softwarize networking, controlling how data packets are transmitted through the network using software. That software is called SDN Controller.
Open Network Operating System (ONOS), an open-source project distributed under the Apache 2.0 license by ONF, is a well-known SDN Controller that is used in many carrier-grade solutions. Argela has also utilized ONOS in many of its solutions, and gone beyond using the project by contributing to the ONF community with bug-fixes and new feature implementations. Currently, ONOS is a vital part of the BB Suite product, where it controls the fixed access (PON and aggregation) network. In addition, Argela has also worked with OpenDaylight (ODL), which is another popular SDN Controller solution maintained under LF Networking.
Argela helps operators and solution providers that need to utilize SDN to transform legacy network solutions into next-generation, software based platforms.