Building on the recent joint Optical Internetworking Forum (OIF) and Open Networking Foundation (ONF) global transport SDN demonstration, the OIF has now launched a new project to develop implementation agreements (IAs) for the application programming interfaces (APIs) utilised between application and network controller during the event.
The new initiative will extend the service request and topology APIs prototyped in the OIF-ONF demonstration, with the aim of creating IAs for use by carriers and equipment vendors. The initiative will also create IAs for service request, path computation, topology and link resource manager interfaces that have been identified as part of the OIF's forthcoming SDN Framework document.
The APIs to be delivered under the new project will be based on REST and JSON principles to allow rapid and flexible application development.
The OIF noted that the availability of a service API is particularly important as it can allow applications to request connectivity services from the network. A common service API will allow a range of applications to access services provided by the network, particularly in an environment with multiple domains with potentially different underlying control methods.
During the recent global transport SDN demonstration, different domains supported a number of south-bound interfaces (SBIs) via the domain controller, including vendor-specific, standard OpenFlow version 1.3 and OpenFlow with optical extensions. In this environment, a common service API allowed the same application to be tested across the heterogeneous domains.
Likewise, a topology API can provide applications with visibility into the connectivity available in the network. A common topology API allows a variety of applications to access network topology information, enabling support for new constraints and service criteria.
The transport SDN demonstration implemented a prototype topology API and it was noted that different domains exported topology information, thereby enabling path computation to be performed outside of the controller. These paths could then be requested using the service API. Additionally, the service API responses included references to links and nodes in the topology so that the activated path could be shown.
The OIF also announced that it has completed its annual leadership elections, with Doug Zuckerman of Applied Communication Sciences and Junjie Li of China Telecom elected to the board of directors for one-year terms. In addition, officers re-elected on two-year terms include Dave Brown, VP of marketing at Alcatel-Lucent, Dave Stauffer, secretary/treasurer of Kandou Bus, John McDonough, VP at NEC America, and Torsten Wuth of Coriant, who serves as OIF physical layer user group working group chair.