T-API taps into the transport layer

The Optical Internetworking Forum (OIF) in collaboration with the Open Networking Foundation (ONF) and the Metro Ethernet Forum (MEF) have tested the second-generation transport application programming interface (T-API 2.0).

SK Telecom's Park Jin-hyo

T-API 2.0 is a standardised interface, released in late 2017 by the ONF, that enables the dynamic allocation of transport resources using software-defined networking (SDN) technology.

The interface has been created so that when a service provider, or one of its customers, requests a service, the required resources including the underlying transport are configured promptly.       

The OIF-led interoperability demonstration tested T-API 2.0 in dynamic use cases involving equipment from several systems vendors. Four service providers - CenturyLink, Telefonica, China Telecom and SK Telecom - provided their networking labs, located in three continents, for the testing.

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ONF advances its vision for the network edge

The Open Networking Foundation’s (ONF) goal to create software-driven architectures for the network edge has advanced with the announcement of its first reference designs.

In March, eight leading service providers within the ONF - AT&T, Comcast, China Unicom, Deutsche Telekom, Google, NTT Group, Telefonica and Turk Telekom - published their strategic plan whereby they would take a hands-on approach to the design of their networks after becoming frustrated with what they perceived as foot-dragging by the systems vendors.  

Timon SloaneThree months on, the service providers have initial drafts of the the first four reference designs: a broadband access architecture, a spine-leaf switch for network functions virtualisation (NFV), a more general networking fabric that uses the P4 packet forwarding programming language, and the open disaggregated transport network (ODTN).  

The ONF also announced four system vendors - Adtran, Dell EMC, Edgecore Networks, and Juniper Networks - have joined to work with the operators on the reference design programmes.

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ONF’s operators seize control of their networking needs

• The eight ONF service providers will develop reference designs addressing the network edge.
• The service providers want to spur the deployment of open-source designs after becoming frustrated with the systems vendors failing to deliver what they need. 
• The reference designs will be up and running before year-end.
• New partners have committed to join since the consortium announced its strategic plan

The service providers leading the Open Networking Foundation (ONF) will publish open designs to address next-generation networking needs.

Timon SloaneThe ONF service providers - NTT Group, AT&T, Telefonica, Deutsche Telekom, Comcast, China Unicom, Turk Telekom and Google - are taking a hands-on approach to the design of their networks after becoming frustrated with what they perceive as foot-dragging by the systems vendors.

“All eight [operators] have come together to say in unison that they are going to work inside the ONF to craft explicit plans - blueprints - for the industry for how to deploy open-source-based solutions,” says Timon Sloane, vice president of marketing and ecosystem at the ONF. 

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SDN starts to fulfill its network optimisation promise

Infinera, Brocade and ESnet demonstrate the use of software-defined networking to provision and optimise traffic across several networking layers.

Infinera, Brocade and network operator ESnet are claiming a first in demonstrating software-defined networking (SDN) performing network provisioning and optimisation using platforms from more than one vendor.

Mike Capuano, Infinera

The latest collaboration is one of several involving optical vendors that are working to extend SDN to the WAN. ADVA Optical Networking and IBM are working to use SDN to connect data centres, while Ciena and partners have created a test bed to develop SDN technology for the WAN.

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Coriant adds optical control to SDN framework

Coriant's CTO, Uwe Fischer, explains its Intelligent Optical Control and how the system will complement Transport SDN.

"You either master all that complexity at once, or you find the right entry point and provide value for each concrete challenge, and extend step-by-step from there" 

Uwe Fischer, CTO of Coriant

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OIF defines carrier requirements for SDN

The Optical Internetworking Forum (OIF) has achieved its first milestone in defining the carrier requirements for software-defined networking (SDN).

"The orchestration layer will coordinate the data centre and transport network activities and give ... easy access to new applications"

Hans-Martin Foisel, OIF

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Ciena and partners build SDN testbed for carriers

Ciena, working with partners, is building a network to enable the development of software-defined networking (SDN) applied to the wide area network (WAN). The motivation in creating the testbed network is to boost carrier confidence in SDN while aiding its development.

 "When you get very serious vice presidents in tier-one carriers saying, 'This [SDN] is the biggest change in my career', there is something to it."

Chris Janz, Ciena

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