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Sato Y.,Nippon Telegraph and Telephone | Fukuda I.,NTT Innovation Institute Inc. | Fujita T.,Nippon Telegraph and Telephone
IEICE Transactions on Communications | Year: 2013

The use of computing resources on network is becoming active in the Internet and private networks. OpenFlow/Software-Defined Networking (SDN) is drawing attention as a method to control network virtualization for the cloud computing services and other carrier services. This paper introduces examples of OpenFlow/SDN technologies applied to commercial cloud services. Various activities to expand coverage over commercial carrier networks are also mentioned. Copyright © 2013 The Institute of Electronics, Information and Communication Engineers.


Jinzenji K.,NTT Software | Hoshino T.,NTT Software | Williams L.,North Carolina State University | Takahashi K.,NTT Innovation Institute Inc.
2013 IEEE 24th International Symposium on Software Reliability Engineering, ISSRE 2013 | Year: 2013

The use of highly iterative software development methodologies, such as Agile and Lean, have been growing. However, these methodologies do not explicitly provide practices for managing and measuring software quality. This deficiency may prevent software development organizations in critical domains from transforming from traditional development to highly iterative development. These organizations may need to manage quality during development and may desire to compare with the quality of a large number of products produced in the past. In this paper, we focus on the reliability aspects of software quality and discuss the applicability of conventional reliability metrics to iterative development. First, we defined the general process structure in iterative development. Then, we present an associated quality evaluation scheme closely. Our experimental results indicate that traditional quality metrics were applicable to iterative development and that the iterative development achieved maturity sufficient for the commercial release. © 2013 IEEE.


Natarajan S.,NTT Innovation Institute Inc. | Ramaiah A.,NTT Innovation Institute Inc. | Mathen M.,NTT Innovation Institute Inc.
Proceedings of the 2013 IEEE 2nd International Conference on Cloud Networking, CloudNet 2013 | Year: 2013

The notion of programming the forwarding device using an open protocol is a key feature of Software-defined Networks (SDN). This improves network visibility and control thereby reducing vendor dependency. OpenFlow protocol provides a standardized approach to realize these goals of SDN. In this paper, we illustrate our progress with a Software-defined Cloud-Gateway automation system using OpenFlow. In addition, based on our deployment experience, we highlight two technical challenges when using OpenFlow. First, with the standardization being an evolving effort, we highlight some of the programming challenges and missing features within the OpenFlow protocol. Secondly, existing OpenFlow-based network stack lacks some architectural components that reduces the level of flexibility we achieve when programming the network. Most SDN controllers expose limited abstractions to build network applications thereby primarily functioning as an OpenFlow driver. This imposes an application programmer to work with several OpenFlow primitives. To address this problem, we elaborate our current work in extending the SDN stack to improve our overall network programmability experience. © 2013 IEEE.


Koushik S.,NTT Innovation Institute Inc. | Mathen M.,NTT Innovation Institute Inc.
NTT Technical Review | Year: 2014

This article introduces the activities of NTT Innovation Institute, Inc. (NTT I3), which recently marked the first anniversary of its establishment in Silicon Valley, California. This article is based on a speech given by Srini Koushik, President and CEO of NTT I3 and Mayan Mathen, SVP and Chief Technology Officer of NTT I3, at NTT Forum on February 13, 2014.


Saito S.,NTT Data | Iimura Y.,Software Innovation | Takahashi K.,NTT Innovation Institute Inc. | Massey A.K.,Georgia Institute of Technology | Anton A.I.,Georgia Institute of Technology
36th International Conference on Software Engineering, ICSE Companion 2014 - Proceedings | Year: 2014

Requirements evolve throughout the software life-cycle. When requirements change, requirements engineers must determine what software artifacts could be affected. The history of and rationale for requirements evolution provides engineers some information about artifact dependencies for impact analysis. In this paper, we discuss a case study of requirements evolution for a large-scale system governed by Japanese laws and regulations. We track requirements evolution using issue tickets created in response to stakeholder requests. We provide rules to identify requirements evolution events (e.g. refine, decompose, and replace) from combinations of operations (e.g. add, change, and delete) specified in the issue tickets. We propose a Requirements Evolution Chart (REC) to visually represent requirements evolution as a series of events over time, and implement tool support to generate a REC from a series of issue tickets using our rules to identify requirements evolution events. We found that the REC supports impact analysis and compliance efforts. Copyright © 2014 ACM.


Patent
Ntt Innovation Institute Inc. | Date: 2014-05-12

A system that includes a recorder that records information of a flow table of at least one network device in a network by capturing information regarding the flow table that is transmitted to and from the network device, wherein the network device receives and forwards incoming packet data over the network, and the flow table is used to determine how each incoming packet is handled by the network device; an analyzer that analyzes state changes in the network and manages a network state; and a restorer that, when a type of failure occurs in the network, recovers the network state by restoring at least a portion of the flow table using the recorded information of the flow table and based on the type of failure event that has occurred.


A system and method of access control and tracking capabilities of programmable switches are described. A system and associated method include an access controller component and a tracker component. The access controller component defines access control rights for a user in a flow of a programmable switch in a network. The access control rights are determined by access control table information and an associated bit-array based flow-level role data structure built by a controller network operator. The tracker component authorizes and permits the user to modify the flow according to a flow modification request, which is based upon information in the access control table information and the associated bit-array based flow-level role data structure for the user. A notification component of a programmable switch notifies the controller of the network about the modification request to the flow.


Trademark
NTT Innovation Institute Inc. | Date: 2016-05-11

Computer hardware and software for setting up and configuring software defined networking (SDN). Software as a service (SAAS) services featuring software defined networking (SDN) services.


Trademark
NTT Innovation Institute Inc. | Date: 2016-05-11

Computer hardware and software for setting up and configuring software defined networking (SDN). Software as a service (SAAS) services featuring software defined networking (SDN) services.


Project CloudWAN Enables Enterprises to Reduce Costs and Complexity While Increasing Their Level of Control and Responsiveness PALO ALTO, CA--(Marketwired - Oct 24, 2016) - NTT Innovation Institute Inc. (NTT i3), the prominent Silicon Valley innovation center for NTT Group, one of the world's largest ICT companies, announced today the beta launch of Project CloudWAN at the ONUG Fall 2016 Conference in New York City. An intelligent technology fabric, NTT i3's Project CloudWAN enables organizations to effectively and efficiently scale and evolve in order to respond to business changes across the full technology stack. Project CloudWAN is explicitly built for the disruption economy, allowing highly agile enterprises to rapidly and seamlessly take action in response to fast changing markets with networks which are responsive and unified. The rise of globalization has necessitated the mandate to increase the speed of doing business. Presently, IT professionals are limited by legacy technology practices optimized purely for the management of rigid silos. However, current technology environments need to be focused on the complex multi-vendor approach to Cloud, SaaS, PaaS, Open Source and the importance of apps -- thus necessitating a solution to streamline complex networks across various business units and adapt to the ever-changing corporate environment. "With Project CloudWAN, NTT i3 is enabling organizations of all sizes to grow with the speed and flexibility that a global business demands. We help enterprises reduce their networking costs by providing them with a choice to connect through less costly links and dynamically manage reliability, latency and speed," said Ravi Srivatsav, Managing Director, NTT i3. "Our aim is to enable enterprises to reduce wide area networking (WAN) spend, lower technology costs, reduce administration complexity, and increase business productivity. We plan to deliver this through NTT Group's global operating companies who serve as trusted advisors to their customers across five continents." Project CloudWAN unifies disparate network deployments by supporting management of infrastructure, network function, and applications from a single console and enabling IT managers to proactively plan for network needs while also pragmatically managing their existing infrastructure investments. Similarly, enterprise cloud operators running a wide range of traditional enterprise applications from multiple vendors or cloud-native workloads can flexibly consolidate their application silos into one universal data infrastructure. For more information about NTT i3 Project CloudWAN, please visit www.cloudwan.io or see us at ONUG Conference on October 24 & 25. NTT Innovation Institute, Inc. (NTT i3) is the Silicon Valley-based innovation center for NTT Group, one of the world's largest ICT companies. Focused on fostering strategic innovation, NTT i3 works with established enterprise companies to investigate new approaches to evolving into technology-first, digitally-driven businesses. Likewise, NTT i3 partners with early stage digitally-native businesses looking to expand their presence and challenger advantage. Accelerating the movement of innovation from initial idea to marketplace implementation, NTT i3 combines access to the significant global infrastructure resources, investment fund, research knowledge, and trusted long-standing customer relationships of NTT Global with its own software startup expertise and deep enterprise relationships. For more information, please visit NTT i3 at www.ntti3.com or on Facebook and Twitter

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