Market Overview

OIF Interoperability Test Validates Transport Application Programming Interface (T-API) 2.0 Market-Readiness – Results Published in New White Paper


Successful collaborative demo identified multiple success points and
areas where additional work is needed to enhance performance – white
paper to provide deep dive and outline specifics

Detailed results from the OIF's
(Optical Internetworking Forum) 2018 Software-Defined Networking (SDN)
Transport Application Programming Interface (T-API) multi-vendor
interoperability demonstration showcasing new dynamic behavior use cases
and deployment scenarios are available in a white paper published today.
To request a copy, please go here.

Demo results were initially announced at a public
at NGON in Nice, France, and at two invitation-only events
earlier this month at CenturyLink and China Telecom. An additional
read-out was held last week during MEF's
Annual Meeting
in Nashville, Tenn.

Following a six-week testing period, the OIF
released its findings through liaisons to industry bodies. Among the
findings are the following (additional details on the testing and
results can be found in the white

  • Open Networking Foundation (ONF) T-API 2.0 specifications have
    addressed the main issues identified in the OIF's 2016 testing and
    provide a basis for real-time orchestration of on-demand connectivity
    setup, control and monitoring across diverse multi-layer,
    multi-vendor, multi-domain carrier networks
  • Additional scaling and performance enhancements will need to be
    addressed as T-API is deployed in real networks, such as refinements
    to the model, greater detail in error codes to improve debugging
    properties, and potential implementation options such as a separate
    server for notifications of network events
  • The API allows for some variability in the use of topology abstraction
    depending on business requirements and technology; documentation of
    supplementary examples for topology abstraction will help application
    and orchestration software developers.

"Standardized and open SDN APIs reduce complexity in intra and
inter-domain operations, allowing us to provide more diverse services to
our customers in less time," said Park Jin-hyo, EVP of ICT R&D Center at
SK Telecom. "After successfully completing the test trial, SK Telecom
will keep engaging in 5G transport network and service development by
opening APIs and transforming the current infrastructure into
Network-as-a-Service (NaaS) Platform."

The multi-vendor demo led by four network operator labs included
lab-deployed and cloud-deployed systems testing new dynamic behavior use
cases and deployment scenarios. The demo also incorporated service
provisioning scenarios at the LSO Presto reference point in the MEF LSO
architecture, using the MEF NRP Interface Profile Specification (MEF
60), which defines extensions to T-API in support of Carrier Ethernet

Participating network operators were CenturyLink, China Telecom, SK
Telecom and Telefónica and vendors included ADVA, Coriant, Infinera,
NEC/Netcracker, Nokia and SM Optics. Centre Tecnològic de
Telecomunicacions de Catalunya (CTTC) was a participating academic
institution and TELUS Communications participated as a consulting
network operator.

Additional information and an infographic can be found at

2018 OIF SDN Transport API Interoperability Demonstration

Committed to accelerating the commercialization of transport SDN
worldwide, the Optical Internetworking Forum (OIF), in collaboration
with MEF, will bring new dynamic behavior use cases and deployment
scenarios into network operator labs around the world to test
multi-vendor interoperability of the industry leading T-API 2.0
northbound interface (NBI) from the Open Networking Foundation (ONF).
The 2018 Software-Defined Networking (SDN) Transport Application
Programming Interface (T-API) interoperability demonstration builds on
the OIF's 2016 interoperability test and demonstration which addressed
multi-layer and multi-domain environments as well as on the 2014 demo
which prototyped the use of Northbound APIs and helped advance transport
SDN standardization. For an infographic of the demo, click

About the OIF

The OIF facilitates the development and deployment of interoperable
networking solutions and services. Members collaborate to drive
Implementation Agreements (IAs) and interoperability demonstrations to
accelerate and maximize market adoption of advanced internetworking
technologies. OIF work applies to optical and electrical interconnects,
optical component and network processing technologies, and to network
control and operations including software defined networks and network
function virtualization. The OIF actively supports and extends the work
of national and international standards bodies. Launched in 1998, the
OIF is the only industry group uniting representatives from across the
spectrum of networking, including many of the world's leading service
providers, system vendors, component manufacturers, software and testing
vendors. Information on the OIF can be found at

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