Thursday, March 22, 2018

AT&T looks to combine XGS-PON with ONAP for virtualized optical access network

AT&T and the Open Networking Foundation (ONF) announced a collaboration to integrate the ONFs' work on multi-gigabit passive optic networks (PON) with the service automation system, ONAP.

The effort will integrate VOLTHA (Virtual Optical Line Termination Hardware Abstraction), the open source software stack powering PON networks, with ONAP.

AT&T said the idea is to develop virtualized and disaggregated network access for PON networks. The integration will build upon AT&T's ongoing field trials of XGS-PON, which is a fixed wavelength symmetrical 10Gbps passive optic network technology. It also builds upon previous GPON and CORD trials.

The current XGS-PON trial is testing multi-gigabit high-speed internet traffic and providing a AT&T DIRECTV NOW video experience to trial participants. To build the network, AT&T used the following open source software.


  • AT&T Open XGS-PON OLT: an OCP Accepted white box OLT
  • ONOS: the ONF SDN controller that hosts virtual OLT control applications
  • vBNG: a virtual broadband network gateway application to manage subscribers
  • VOLTHA (Virtual Optical Line Termination Hardware Abstraction): an ONF software project that provides hardware abstraction and a highly available SDN driver for OLT devices.
  • VOLTHA, the software powering the PON network trials, was developed by an ONF project community and used the latest in DevOps development techniques to enable rapid prototyping and accelerated delivery to the field trial. AT&T's Foundry in Atlanta developed the vBNG software and AT&T provided overall system integration and field operations for the trial.

"Our network is constantly evolving. Collaboration and openness across AT&T, the ONF, and VOLTHA teams will be key to bringing this 10 Gbps broadband network to customers faster," said Igal Elbaz, senior vice president, Wireless Network Architecture and Design, AT&T. "Now that we've proven the viability of open access technology in our trials, we can start the integration with our operations and management automation platform – ONAP."

"AT&T's Access team has been an important collaborator in ONF's mission to provide open source platforms for software defined broadband access and we look forward to building on this collaboration as we integrate with ONAP," said Guru Parulkar, Executive Director, ONF.

AT&T completes software-based XGS-PON field trials

AT&T completed field trials of a 10 Gbps XGS-PON virtualized network using Open Source Access Manager Hardware Abstraction (OSAM-HA) software in Atlanta and Dallas.

OSAM-HA, which was previously known as Virtual Optical Line Termination Hardware Abstraction (VOLTHA), enables a virtualized Broadband Network Gateway (BNG) function to manage subscribers. OSAM is a vendor agnostic operational suite for managing consumer and business broadband access network elements and capabilities; separate from vendor-specific Access Element Management Systems (EMS).

XGS-PON is a fixed wavelength symmetrical 10Gbps passive optic network technology.  During the trials, the XGS-PON system tested multi-gigabit high-speed Internet traffic and provided a seamless AT&T DIRECTV NOW video experience to participants.

One observation from the trial is that AT&T found it possible for GPON and XGS wavelengths to coexist across a single fiber interface.

“Our network is constantly evolving. We’ll continue to execute our software-based network strategy to technologies like 5G, virtualized RAN, and G.FAST over time. Ultimately, instead of deploying islands of technology that have SDN control, we want to orchestrate the entire end-to-end network through ONAP,” said Eddy Barker, assistant vice president, Access Architecture and Design, AT&T.

ONAP stands for Open Network Automation Platform. It’s our virtual access project within the Linux Foundation and will use the first iteration of OSAM-HA technology.

AT&T releases its Virtual Optical Line Termination Hardware Abstraction to ONF

AT&T is contributing its Virtual Optical Line Termination Hardware Abstraction (VOLTHA) code into the Open Networking Foundation (ONF).

VOLTA provides the framework behind AT&T's XGS-PON access network in the cloud. AT&T is currently performing proof-of-concept testing of VOLTHA in its labs and are planning to deploy XGS-PON field trials before the end of 2017.

AT&T described its decision to contribute its VOLTHA code as one more step in its commitment to move toward open source software and SDN/NFV frameworks.







ZTE carries 66GBaud PDM-16QAM 400Gb/s WDM signals over 6,000 km

ZTE, working in collaboration with OFS and NeoPhotonics, transmitted 66GBaud PDM-16QAM 400Gb/s WDM signals over 6,000 km on 100 km spans with the channel spacing of 75GHz.

This sets a new world record for 400G ultra-long-haul (ULH) high-speed transmission distance, according to the companies.

In this test, the 506 Gb/s PDM-16 QAM signals after probability shaping are transmitted over 6,000 km on OFS 100 km spans with the channel spacing of 75GHz. This is the longest WDM transmission distance of PDM-16QAM signals so far based on the terrestrial transmission system (100km span) with the line spectrum efficiency exceeding 5.3b/s/Hz.

The test used probability shaping coherent communication technology developed by ZTE. The low-power-consumption small-sized high-bandwidth coherent driver modulator (HB-CDM) was designed and produced by NeoPhotonics and the large-aperture low-loss OFS TeraWave fibers provided by OFS.

“Single-carrier 400G transmission has become the most attractive beyond 100G solution since it can reduce system complexity,” said Dr. Yu Jianjun, ZTE Scientist in optical communication and OSA Fellow, “ ZTE has extended researches on 400G transport technologies for a long term and solved a variety of key technical problems. The probability shaping technology used in this experiment lengthens the transmission distance by 40%.”

ZTE cited a number of other optical transmission milestones:

  • In 2015, ZTE together with OFS released a new 400G ULH high-speed transmission record by transmitting 128.8-GBaud QPSK WDM signals over 10,130 km and 6,078 km on terrestrial fiber links.
  • In 2016, ZTE transmitted 120GBaud 16QAM signals over 1,200 km on terrestrial fiber links, setting a new 800G transmission record.
  • In 2017, ZTE adopted an enhanced advanced algorithm to transmit WDM signals on standard single-mode fiber links over 2,125 km, breaking the 400G 8QAM signal transmission record.


IEEE Publishes IEEE 802.3cc-2017 25 Gb/s Ethernet Standard

IEEE announced the publishing and availability of its 802.3cc-2017—Standard for Ethernet Amendment: Physical Layer and Management Parameters for Serial 25 Gb/s Ethernet Operation Over Single-Mode Fiber.

The new amendment to IEEE 802.3 addresses the growing need for increased Ethernet speeds for enterprise, campus and metro Ethernet speeds exceeding 10 Gb/s, and that can support reaches up to 10 and 40 kilometers over single-mode fiber (SMF).

IEEE 802.3cc supports efficient Ethernet operation and defines single-lane 25 Gb/s PHYs for operation over single-mode fiber with lengths up to 10 km and 40 km. IEEE 802.3cc addresses the requirement in metropolitan networks, where the core operates at 100 Gb/s, for tributary feeds at rates higher than 10 Gb/s. By enabling extended 25 Gb/s reaches, IEEE 802.3cc matches the per-lane rate of several 100 Gb/s PMDs currently used in these networks.

“IEEE 802.3cc provides network operators a cost-effective upgrade path to 25 Gb/s that minimizes network design, installation and maintenance costs by preserving current network architecture, management, and software,” said David Lewis, chair, IEEE 802.3cc 25 Gb/s Ethernet over Single-Mode Fiber Task Force. “The work of the IEEE 802.3cc 25 Gb/s Ethernet over Single-Mode Fiber Task Force has demonstrated how responding quickly to industry demand for greater energy-efficient Ethernet capabilities can be achieved in a manner that can reduce both operational costs, and the environmental footprint of network upgrades.”

Pica8 and NEC demo 100G Multivendor SDN Switching Fabric

Pica8 is demonstrating a multivendor 100G switch fabric using the NEC ProgrammableFlow SDN Controller to drive its PICOS network operating system on core and edge switches from Dell EMC, NEC and Edgecore to facilitate open networking.

NEC is showing how its SDN ProgrammableFlow Controller can work with Pica8’s PICOS to enable open networking across a variety of switch hardware vendors to deliver a multitenant 100G switch fabric with high scalability and zero-touch provisioning. The demonstration includes PICOS running on a Dell Z9100 core switch linked to one Edgecore 5812 edge switch and one NEC PF5340 edge switch.
Multitenancy is essential for securely isolating tenants on shared networks within data centers, enterprise networks and service provider environments while maintaining high throughput and ease of operations through zero-touch provisioning at the edges with full visibility throughout the network. The demonstration shows the broad interoperability of both the NEC SDN controller and PICOS on core and edge switches.

The company said this demonstration proves the commercial viability of building SDNs without vendor lock-in.

“The combination of NEC’s ProgrammableFlow Controller and Pica8’s breadth of supported platforms can deliver a high-performance, highly-available network fabric without vendor lock-in”, said Don Clark, director of business development for NEC Enterprise Communication Technologies. NEC continues to be commited to customer choice through open networking.”

“Paired with SDN controllers like NEC’s SDN ProgrammableFlow Controller, PICOS provides an open network solution that delivers network visibility, scalability, programmability, and zero-touch provisioning with a low cost of ownership,” said Jeff Paine, vice president of marketing at Pica8. “This demonstration shows how PICOS can be an essential component in an overall SDN solution, and we are excited that NEC has chosen to work with us on this project.”

Infomart sells data centers in SJ, Hillsboro and Ashburn

Infomart Data Centers confirmed the sale of three of its data centers and its management company to IPI Data Center Partners Management. Financial terms were not disclosed.

The deal includes Infomart’s data centers in San Jose, California; Hillsboro, Oregon; and Ashburn, Virginia. Combined, the three data centers total 665,000 square feet with 27.2 megawatts of total in-place capacity and 29.7 megawatts of additional expansion potential.

Equinix to acquire iconic Infomart Dallas colo data center for $800m

Equinix has agreed to acquire the Infomart Dallas data center, including its operations and tenants, from ASB Real Estate Investments for $800 million.

The iconic Infomart building, which is located at 1950 N. Stemmons Freeway in Dallas, is one of the largest interconnection hubs in the U.S. and one of the largest buildings in Texas at 1.6 million square feet (147,094.2 m2) over 7 floors.Infomart is currently home to four of eight Equinix Dallas International Business Exchange (IBX) data centers (DA1, DA2, DA3 and DA6), which combined, support approximately 3,500 built out cabinets.

Equinix said the transaction increases the number of its owned assets by four, increasing recurring revenue from owned assets to more than 45 percent. The facility offers multiple, diverse fiber entry points, and provides significant expansion opportunities to Equinix through the existing underdeveloped capacity (approximately 11MW of power), as well as the potential to develop additional capacity (approximately 40MW of power) on land adjacent to the Infomart building. It currently has approximately 45 tenants, including networks, colocation providers, office tenants and Equinix. Today, Equinix is the largest tenant accounting for approximately 40 percent of the lease revenues from the facilities

Matillion raises $20 million for cloud data warehousing software

Matillion, a start-up based in the UK, announced a $20 million Series B round of funding for its cloud data integration tools.

Matillion's software enables customers to extract, load and transform data into and on cloud-based data warehouses, quickly and at scale. Versions are avaialable for Amazon Redshift, Snowflake and Google BigQuery.

The funding round was led by Sapphire Ventures and included new investor Scale Venture Partners, and existing investor, UK-based venture capital trust, YFM Equity Partners.

"Cloud-based data warehouses, like Amazon Redshift, Snowflake and BigQuery, are changing the game in data analytics, reducing cost, time-to-value and increasing the power available to businesses to load, transform and analyse their data. The thousands of new projects and workloads this creates is in turn driving rapidly increasing demand for our built-for-the-Cloud, ELT architecture, data integration tools, as companies want and need to compete with data, quickly and at any scale," said Matthew Scullion, chief executive officer, Matillion. "This round of funding is an exciting opportunity for us to work with the fantastic teams at Sapphire Ventures and Scale Ventures Partners to meet the needs of our customers and partners as well as further accelerate the pace of innovation going into our products."

Telstra speed tests Samsung Galaxy S9 over 1 Gbps

Telstra has measured downlink performance to a Samsung Galaxy S9 in excess of 1 Gbps.

The tests were conducted on the Telstra 4GX service.

Telstra’s gigabit-enabled coverage is available in the Sydney and Melbourne CBDs (3km radius), Brisbane and Adelaide CBDs (2.0 km radius), and a number of sites in selected high traffic locations. Gigabit LTE deployment is also underway in the Perth CBD.

“Cracking the magic gigabit mark on smartphones is an exciting milestone. As smartphones evolve and we move into the 5G era there will be a new raft of sophisticated features that are enabled by reliably fast data speeds. High-quality augmented reality, virtual personal assistants that anticipate needs and virtual doctors that monitor vital signs are just some of the technologies that are on the horizon,” stated Kevin Teoh, Telstra’s Head of Mobiles.

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