Showing posts with label Transport SDN. Show all posts
Showing posts with label Transport SDN. Show all posts

Thursday, January 11, 2018

Telefónica conducts T-SDN tests with Huawei

Telefónica completed laboratory tests on a T-SDN (Transport Software-Defined Network) solution provided by Huawei that included an SDN controller with capabilities for planning, management, monitoring and diagnosis of Telefónica España’s photonic mesh.

T-SDN aims to improve network operations in the photonic mesh.

In 2009, Telefónica began deploying an all-optical, mesh network with more than 200 nodes throughout Spain. This network leverages flexible ROADM technology along with an advanced network control plane. While this improved the reliability and flexibility of the service, it also posed challenges for Operation and Maintenance (O&M).

Huawei said its new centralized controller can be used to obtain real-time information and to conduct incident simulations with the goal of identifying risks to an optical service and preventing network disruptions before they happen.

The centralized T-SDN algorithm can also be used to optimize the spectrum and to improve the reliability and performance of the WDM network. In addition, Huawei is developing a new platform known as NCE (Network Cloud Engine) to integrate the online WDM planning tool, the control plane and the network management system.

María Antonia Crespo, Director of IP Connectivity and Transport at Telefónica España, commented: “we were interested in seeing how T-SDN technology can help Telefónica in many different areas. Firstly, we’d like to improve the performance of the WDM control plane, helping to reduce restoration times. We also hope that it will enable Telefónica to manage its resources more efficiently and improve its network diagnoses. Finally, it will be very useful for us if we can move towards the automation of the network, as this is one of the key goals in Telefónica’s strategy for the coming years.”

Tuesday, March 10, 2015

Pacnet Deploys Infinera's Open Transport Switch to Virtualize Optical Network

Pacnet, which operates submarine cable systems connecting 15 cities in the Asia-Pacific region, has deployed Infinera’s new Open Transport Switch (OTS) software to extend virtualization into the optical layer of its network. Pacnet’s existing Intelligent Transport Network is based on the Infinera DTN-X packet optical transport networking platform.


Infinera’s OTS is now deployed within the Pacnet Enabled Network (PEN), which is an SDN-based service delivery platform that offers Layer 2 Ethernet services on-demand from 1 megabit per second to 10 Gbps. PEN delivers scalable bandwidth and software-enabled intelligence, allowing customers to dynamically provision bandwidth in minutes through a custom portal based on their business needs.

The combination of Infinera's DTN-X platform with the new Open Transport Switch allows PEN to offer a Layer 1 transport bandwidth on-demand service in increments of N x 10 Gbps. It is designed to allow services in increments of N x 100 Gbps for high-capacity customers in the future. The deployment runs in Hybrid Control mode, with new services leveraging bandwidth under SDN control, while existing production services continue to operate using their Infinera DNA network management system.

Pacnet said it was able to get the new OTS capabilities up and running in its PEN platform in a matter of a few months.  Pacnet is shifting into a DevOps model and Infinera is designing its optical solution for this same IT mindset. The Infinera OTS software, which leverages an open web 2.0 architecture, abstracts and virtualizes the underlying multi-layer Intelligent Transport Network taking advantage of the highly scalable and software controllable DTN-X platform. OTS then presents modern, open application programming interfaces (APIs) to enable simple programming of the transport network by any SDN controller or orchestration system.  It runs on x86 Linux server.

“In November 2013, we launched the industry’s first fully-automated, SDN-based service delivery platform, Pacnet Enabled Network, on Layer 2 Ethernet. Today, we are excited to continue to lead through innovation by bringing this capability to our optical layer," said Jim Fagan, president, managed services at Pacnet. "With this deployment, Pacnet can deliver to our customers a true Cloud experience to better utilize our unrivalled network assets.”

“The production deployment of the Infinera Open Transport Switch to support Pacnet’s innovative new service demonstrates how an open networking approach, combined with a DevOps model, reduces time to market for new services,” said Stu Elby, senior vice president, Cloud network strategy and technology at Infinera. “We believe the availability of the Infinera Open Transport Switch makes the Infinera Intelligent Transport Network the most programmable optical networking solution available, enabling our customers to rapidly develop new services with the SDN controller of their choice.”

http://www.infinera.com/j7/servlet/NewsItem?newsItemID=444


In December 2014, Telstra announced plans to acquire Pacnet Limited, which owns and operates a pan-Asian submarine cable network and offers managed services and data center services to carriers, multinational corporations and governments across the region, for US$697 million acquisition is subject to completion adjustments. In addition to its submarine cables and 21 landing stations in China, Hong Kong, Japan, the Philippines, Singapore, South Korea and Taiwan, Pacnet’s core assets comprise an integrated network with 109 PoPs across 61 cities in the Asia-Pacific region, along with 29 data centers in key locations. Seven of the data centers have Tier III accreditation. In addition, Pacnet controls two of the five fibre pairs on the Unity trans-Pacific submarine cable network connecting Japan to the United States.

In the year ended December 2013, Pacnet generated revenues of US$472m and earnings before interest, tax, depreciation and amortisation (EBITDA) of US$111m. Pacnet is headquartered in both Singapore and Hong Kong with approximately 815 employees across 25 offices (including PBS China).

Wednesday, November 5, 2014

China Telecom Tests Huawei's Transport SDN Controller

China Telecom Fujian (Fujian Telecom) and China Telecom Beijing Research Institute have tested Huawei's Transport SDN controller for implementing an intelligent private line Bandwidth on Demand (BoD) app for VIP customers.

The idea is to let VIP customers apply for private line services online, which would then be provisioned immediately over the optical transport network. In addition, tenants can adjust the service bandwidth of private lines in real-time based on traffic volume, making full use of bandwidth resources.   '

Zha Jun, President of Huawei Fixed Network Product Line, said, "Huawei cooperated with China Telecom to deploy the innovative BoD private line app based on the transport SDN. The deployment is a key milestone that effectively pushes progress of the transport SDN industry. Huawei will continue to cooperate with China Telecom in developing cutting-edge 400G, 1T, 2T, and SDN technologies, and building a flexible, synergetic, intelligent, and open next-generation transport network."

http://pr.huawei.com/en/news/hw-391065-sdn.htm#.VFrcTVPF_Tg


Tuesday, October 28, 2014

Blueprint: Essential Elements of Transport SDN

by Stu Benington
Vice President, Cloud/SDN Business Unit, Coriant

There is a great opportunity emerging for service providers, driven by the widespread adoption of cloud-based applications by both enterprises and consumers. It’s a chance to capitalize on the elastic network needs of on-demand cloud-based services to create new sources of revenue and tighten control of CAPEX/OPEX costs.

The lack of elasticity in most of today’s static networks makes it difficult for service providers to deliver the on-demand bandwidth needed to support dynamic applications in a fast, cost-effective and profitable way. Also, the on-demand nature of cloud-based applications facilitates unpredictable traffic volumes that are often characterized by spikes in usage and variable traffic patterns. This challenges service providers to plan and engineer appropriate levels of network performance to satisfy users’ application demands.

In today’s fiercely competitive networking market, service providers need a new business model that enables them to capitalize on the proliferation of cloud-based applications and services. To this end, service providers must seek networking solutions built on Software Defined Networking (SDN) architecture.

An SDN-based solution transforms today’s rigid transport infrastructure into a highly programmable network that is as adaptive, efficient and scalable as data-center computing and storage resources. Transport networks become sufficiently flexible to deliver the bandwidth and performance needed for cloud-based applications on demand.

SDN shifts control of the network from internal elements to an external centralized controller and abstracts the underlying hardware infrastructure from the applications. The external controller now decides which network paths packets should take based on application requirements and the users’ willingness to pay. Then, using a standardized interface such as the NETCONF or OpenFlow protocols conveys its instructions to the forwarding plane, which remains within network elements such as routers and switches.

Transform the Network with Dynamic, Multi-Layer Transport

Service providers need to leverage the differentiated value of existing assets, including their network resources, networking expertise, and investments in the network brand. By deploying an SDN solution that combines dynamic multi-layer (L0-L3) transport with dynamic control, service providers can transform their network and service-delivery model while also maximizing return on their embedded investments. Such a solution enables the programmable network to respond to applications, rather than forcing applications to respond to the network. Using the intelligence in the external controller, the network can update dynamically, in real time, to accommodate the needs of a given application. In addition, these capabilities can be complemented by Network Functions Virtualization to move network resources to optimal locations that are then dynamically accessed by SDN.

The Essential Elements of SDN

A successful SDN has three essential attributes:

1. Programmability: Enables the network to adapt to the dynamic requirements of end users and applications, making it possible for service providers to introduce and modify services very quickly.

2. Multi-layer, multi-vendor end-to-end integration: As more applications and services move to the cloud, service providers must be able to integrate computing and storage resources across:

  • multiple vendors’ platforms
  • multiple segments of the network – access, metro and core; fixed mobile and data center
  • multiple optical and packet protocol layers

SDN helps manage this ecosystem of resources, including optical-layer advances such as flexible grid, ROADMs and photonic mesh, to deliver an end-to-end global view of the network.

3. Openness: Packet-optical transport networks comprise multiple vendors’ platforms and technologies. They depend on standards-based protocols for interoperability at both the virtual and physical layer. SDN’s open and collaborative software-based development process focuses on applications and accelerates innovation. By deploying a truly open SDN solution, service providers can introduce new functions and applications written by vendors, third-party developers, and service providers, with ease. It also provides flexibility for evolutionary steps from legacy environments to SDN programmability. An SDN solution that addresses these critical attributes is the foundation of the programmable network necessary to support and empower cloud-based applications.

SDN Use Cases


As SDN-enabled solutions move from laboratory trials to field trials, the hard evidence in support of the SDN business case is growing:
  • Bandwidth on Demand - An end user or an application may request temporary bandwidth between data centers, a lower latency on an existing connection (performance bursting) or an increase in bandwidth for cloud bursting. It can also provide user-defined connectivity for applications in the same “do it yourself” manner as using virtual machines (VMs).

    When the SDN-enabled network receives these requests, it determines the optimal path through the network. An optimal path is one that meets but does not exceed the requested performance criteria. For example, a service provider does not want to allocate a 10 Gb/s link if a 1 Gb/s link suffices. Similarly, a service provider does not want to allocate a 5-millisecond (ms) path to fulfill a request for a 10-ms delay if a 10-ms path is available. The goal is always to use the network’s least-cost resources first, with significant higher granularity than was previously available.

    Allocating network resources on demand benefits both the service provider and the customer. The service provider increases revenues by utilizing the network more efficiently and cost-effectively and more effectively monetizing network assets. The ability to create bandwidth interconnection services also increases network availability in terms of QoS, redundancy levels and protection. The customer gets the elastic bandwidth necessary to match their changing compute and storage needs, and also potential long- term cost savings.
  • Network Slicing - a process by which the service provider virtually apportions segments of the network across multiple products and layers to satisfy the specific requirements of a particular end user. For example, a service provider could use network slicing to partition services for a retail carrier in a wholesale environment or for a large enterprise. By eliminating the need to virtualize every single network element, the SDN-enabled network enables the service provider to deliver precisely what the end user needs – and do so much more easily, faster and cost-effectively than before.
  • Network Defragmentation - existing network connections are optimized by dynamically and continuously packing them in a more efficient manner on the network. Operating across both the optical and packet layers of the network, SDN-enabled network defragmentation packs flows to improve the network utilization. Because of SDN’s ability to provide a multi-layer, end-to-end view of the network, service providers can boost network utilization by 50- to over 90 percent.
  • Application-based Forwarding - SDN allows a service provider to set up the desired flow for an application according to that application’s specific requirements. For example, a service provider needs to upload into the data center all the data associated with an ERP system backup. Given the security and reliability requirements of that ERP system backup, it’s unlikely the service provider would choose the lowest-cost path to route that application through the network. Contrast that application’s requirements with those of a mobile user’s video application. When downloading that application, the user wants a lot of throughput and a low-cost connection, not necessarily a low-latency connection. SDN enables the service provider to take into consideration all the factors concerning a specific application’s requirements and come up with a recipe for the most appropriate and efficient flow through the network. Additionally, this service could be “calendared” at specific time intervals or done intermittently at the discretion of the provider.

SDN - A Framework for Sustainable Success

SDN is driving a network revolution. By transforming the transport network into a more elastic, adaptable and ultra-scalable entity, SDN creates a framework for service providers in which to create new, billable applications and services. That framework also encompasses the tools and techniques needed to create more sustainable business models and strengthen the ability to compete.
SDN is delivering significant financial and competitive benefits by enabling service providers to do the following:
  • respond to changing market conditions by creating new applications and launching new services faster
  • shorten dramatically the time required to dimension and provision the network resources necessary to support specific applications 
  • satisfy end-user requirements for on-demand bandwidth in an efficient and profitable manner 
  • reduce operational complexity through network simplification and automation 
  • reduce CAPEX and OPEX by a) enabling customers to tailor their application-specific connections and b) enabling service providers to distribute loads, with maximum speed and efficiency, among the most appropriate network resources 
  • free themselves from being locked in to specific vendors’ solutions and associated cycles of forced platform upgrades 
  • generate additional revenues that strengthen their margins 
By deploying the right SDN-enabled solution, service providers can capitalize on the opportunity to
migrate their multi-layer transport networks according to their individual business strategies and budgetary considerations. In doing so, they can protect their existing investments in switches/routers, optical transport platforms and network management systems in a programmable network that is essential for long-term success in an application-driven ecosystem.

About the Author

Stuart Benington is Vice President of the Cloud/SDN Business Unit at Coriant where he is responsible for leading the business unit, including strategy and R&D, focused on software defined networking (SDN), network virtualization, and cloud connectivity.

Prior to this role, Mr. Benington worked at Tellabs where he held a variety of strategy, marketing, engineering and product planning positions across several product groups, including Tellabs’ Data Products, Optical Networks, Network Management, and Managed Access Systems.  He started his career at Marconi (Reltec) working in product management for their broadband access solutions.

Mr. Benington has more than 20 years of experience in the telecom industry and holds Bachelor of Science degrees in economics and computer science from Purdue University and a Master of Business Administration degree from Northwestern University’s Kellogg Graduate School of Management.

Wednesday, September 17, 2014

Carriers and Vendors Conduct Transport SDN Testing

Nine vendors and several global are planning to conduct an interoperability test and demonstration of Transport SDN.

The demo, which is organized by the Optical Internetworking Forum (OIF) and the Open Networking Foundation (ONF), includes participation of ADVA Optical Networking, Alcatel-Lucent, Ciena, Coriant, Fiberhome, Fujitsu, Huawei, NEC Corporation of America and ZTE. China Mobile, China Telecom, TELUS and Verizon are hosting the testing in their labs.

OpenFlow extensions developed in the ONF Optical Transport Working Group are being prototyped and tested in the demo in both CDPI and CVNI forms. Vendors are also testing prototypes of Controller Northbound interfaces for Service Request and Topology functions developed as an OIF activity. The framework of the demo is cloud-bursting or application-based bandwidth-on-demand between data center sites. Testing based on this real-world use case illustrates potential deployment of Transport SDN technology, common interfaces required, needs for interoperability and any operational challenges.

Results will be shared in October in a whitepaper and at the Layer123 SDN and OpenFlow World Congress.

“The ability to bring vendors into carrier labs to test prototype technology provides unparalleled opportunity for industry-wide collaboration,” said Vishnu Shukla of Verizon and president of the OIF.  “This joint work is an initial step in solving the practical issues of implementing transport SDN in commercial networks with the shared goal to make transport networks more programmable in order to enable a new era of dynamic services.”

“We are pleased to join forces with the OIF to demonstrate OpenFlow-based transport SDN capabilities for and with the world’s leading operators,” said Dan Pitt, executive director of ONF. “ONF is committed to combined efforts like this to achieve interoperability and widespread adoption of open SDN in the service provider community and beyond.”

http://www.layer123.com/
http://www.oiforum.com/public/Global_Transport_SDN_Demo_2014.html


Tuesday, August 26, 2014

OIF and ONF to Test Transport SDN with Global Carriers

The Optical Internetworking Forum (OIF) and the Open Networking Foundation (ONF) will begin testing Transport Software Defined Networking (SDN) in several global carrier lab environments, including China Mobile, China Telecom, TELUS and Verizon. Consulting carriers and research institutions participating in the demonstration include KDDI R&D Laboratories, Orange and China Academy of Telecommunications Research. Testing gets underway this month.

OpenFlow extensions for optical transport developed in the ONF Optical Transport Working Group are being prototyped in the demo along with Service Request and Topology APIs from application to controller. The framework of the demo is application-based bandwidth-on-demand between data center sites, also referred to as cloud-bursting. This real-world use case will illustrate prototype deployment of Transport SDN technology, common interfaces required, needs for interoperability and any operational challenges.

“Verizon has been involved with SDN from its genesis and, as this technology evolves, we look forward to a better understanding of its deployment and operation. As one of the carriers involved in the trial and a hosting lab, Verizon fully supports the OIF and ONF and their collaborative efforts to advance the industry development in this area to achieve the expected benefits of SDN, such as increased network programmability, application aware networking and simplified service development.” Chris Emmons, director, Network Systems, Implementation and Planning, Verizon.

http://www.oiforum.com/public/Global_Transport_SDN_Demo_2014.html

Monday, June 30, 2014

OIF and ONF Collaborate on Transport SDN

The Optical Internetworking Forum (OIF) and the Open Networking Foundation (ONF) are collaborating on Transport Software Defined Networking (Transport SDN) demonstrations being conducted this year in several carrier-hosted labs.

The testing, which will begin in late August in a number of global carrier labs, will leverage the OIF’s carrier representation, knowledge of transport networks, and worldwide interoperability testing experience for optical equipment, with ONF’s leadership role for the OpenFlow protocol and SDN architecture. OpenFlow extensions for optical transport developed in the ONF Optical Transport Working Group will be prototyped in the demo.

The OIF is currently working on several initiatives supporting Transport SDN including a carrier-driven Requirements Document and an SDN Framework Document identifying SDN application programming interfaces for a carrier environment.

ONF currently has a number of carrier-focused initiatives underway, including SDN transport, mobile and wireless network applications, carrier-grade SDN, and large-scale network migration.

“We expect SDN, in tandem with Network Functions Virtualization (NFV), to shape the future of telecommunications networks,” said Vishnu Shukla, of Verizon and OIF president. “It is exciting to have these two prominent groups combining resources, innovative thinking and industry support to put together a very relevant and important demo.”

“We are pleased to join forces with the OIF, who have been contributing to our efforts to extend OpenFlow to support optical transport networks,” said Dan Pitt, executive director of the Open Networking Foundation. “The OIF/ONF Transport SDN demonstration will showcase how transport networks will benefit from SDN and NFV.”

http://www.oiforum.com
http://www.opennetworking.org

Monday, August 19, 2013

OIF Marks Progress in Pluggable Coherent Modules, OTN, Transport SDN

The Optical Internetworking Forum announced a new, second project for a pluggable coherent optics transceiver (CFP2) module, saying standardization of a micro Integrated Coherent Receiver (ICR) will enable component manufacturers to quickly ramp up production while also reducing the cost and time to market for high volumes of pluggable modules.

Following its quarterly meeting, the OIF also cited progress on projects addressing thermal aspects, CEI-56G, E-NNI multi-domain recovery, OTNv3, and transport SDN:


  • The OIF Physical Layer Users Group is working to specify the surface smoothness and flatness of optical modules, which are key elements for thermal management by helping to improve heat dissipation.
  • For CEI-56G, simulations of this proposed interface were presented to members of the Physical and Link Layer (PLL) working group. The CEI-56G work effort potentially supports both narrower 100Gbps as well as 400Gbps efforts.
  • The E-NNI Recovery Amendment adds extensions to the E-NNI to allow automated backup from failure or maintenance in multi-domain carrier networks, a critical feature of the optical control plane.
  • The OTNv3 Amendment adds updates to the E-NNI to support the latest OTN control plane standards, now supporting rates from 1Gbps up to 100Gbps.
  • The Carrier completed documenting an initial set of carrier requirements for Transport SDN, providing a framework for Transport SDN in a multi-domain carrier network and identifying requirements on signaling network, control plane and management for deploying SDN in a reliable, secure and high performance manner. OIF members are reviewing this document before it is available to the public.

In addition, the OIF announced the election of Evelyne Roch of Huawei as the Networking & Operations Working Group chair and plans for workshops on Next Gen efforts and Transport SDN in early 2014.  New Members to date in 2013 include Google, KAIST, Mellanox, Optelian, Ranovus, Sandvine, TELUS and US Conec.

http://www.oiforum.com/

See also