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Entries in Software-defined networking (38)

Friday
May192017

What the cable operators are planning for NFV and SDN

Cable operators may be quieter than the telecom operators about network functions virtualisation (NFV) and software-defined networking (SDN) but what they are planning is no less ambitious.

Cable operators are working on adding wireless to their fixed access networks using NFV and SDN technologies.

 

Don Clarke“Cable operators are now every bit as informed about NFV and SDN as the telcos are, but they are not out there talking too much about it,” says Don Clarke, principal architect for network technologies at CableLabs, the R&D organisation serving the cable operators.

Clarke is well placed to comment. While at BT, he initiated the industry collaboration on NFV and edited the original white paper which introduced the NFV concept and outlined the operators’ vision for NFV. 

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Tuesday
May092017

ETSI embraces AI to address rising network complexity

The growing complexity of networks is forcing telecom operators and systems vendors to turn to machine intelligence for help. It has led the European Telecommunications Standards Institute, ETSI, to set up an industry specification group to define how artificial intelligence (AI) can be applied to networking.

 “With the advent of network functions virtualisation and software-defined networking, we can see the eventuality that network management is going to get very much more complicated,” says Ray Forbes, convenor of the ETSI Industry Specification Group, Experimental Network Intelligence (ISG-ENI).

Source: ETSI

The AI will not just help with network management, he says, but also with the introduction of services and the more efficient use of network resources.

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Monday
Apr172017

Infinera inches closer to cognitive networking

Part 2: Infinera’s Instant Network

The second and final part as to how optical networking is becoming smarter

Infinera says it has made it easier for operators to deploy optical links to accommodate traffic growth.

The system vendor says its latest capability, known as Instant Network, also paves the way for autonomous networks that will predict traffic trends and enable capacity as required.

The latest announcement builds on Infinera’s existing Instant Bandwidth feature, introduced in 2012, that uses its photonic integrated circuit (PIC) technology.

Instant Bandwidth exploits the fact that all five 100-gigabit wavelengths of a line card hosting Infinera’s 500-gigabit PIC are lit even though an operator may only need a subset of the 100-gigabit wavelengths. Using Instant Bandwidth, extra capacity can be added to a link - until all five wavelengths are used - in a matter of hours.

The technology allows 100-gigabit wavelengths to be activated in minutes, says Geoff Bennett, director, solutions and technology at Infinera (pictured). It takes several hours due to the processing time for the operator to raise a purchasing order for the new capacity and get it signed off.

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Tuesday
Apr122016

The white box concept gets embraced at the optical layer

Lumentum has unveiled several optical white-box designs. To date the adoption of white boxes - pizza-box sized platforms used in large-scale data centres - has been at the electronic layer, for switching and routing applications.

 

Brandon Collings

White boxes have arisen to satisfy the data centre operators’ need for simple building-block functions in large number that they can direct themselves.  

“They [data centre operators] started using very simple white boxes - rather simple functionality, much simpler than the large router companies were providing - which they controlled themselves using software-defined networking orchestrators,” says Brandon Collings, CTO of Lumentum. 

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Wednesday
Mar162016

OFC 2016: a sample of the technical paper highlights

Optical transmission technologies, Flexible Ethernet, software-defined networking, CFP2-ACOs and silicon photonics are just some of the topics at this year's OFC 2016 conference to be held in Anaheim, California between March 20th and 24th. 

Here is a small sample of the technical paper highlights being presented at the conference.


Doubling core network capacity 

Microsoft has conducted a study measuring the performance of its North American core backbone network to determine how the use of bandwidth-variable transceivers (BVTs) could boost capacity.

The highest capacity modulation scheme suited for each link from the choice of polarisation-multiplexed, quadrature phase-shift keying (PM-QPSK), polarisation-multiplexed, 8 quadrature amplitude modulation (PM-8QAM) and PM-16QAM can then be used.

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Sunday
Oct112015

ECOC 2015: Reflections

Gazettabyte asked industry executives what trends and highlights they noted at the recent European Conference on Optical Communication (ECOC) event, held in Valencia. Here are three views.

 

Valery Tolstikhin, head of a design consultancy, Intengent


ECOC was a big show and included a number of satellite events, such as the 6th European Forum on Photonic Integration, the 3rd Optical Interconnect in Data Center Symposium and Market Focus, all of which I attended. So, lots of information to digest. 

My focus was mainly on data centre optical interconnects and photonic integration.

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Wednesday
Jan072015

Nuage uses SDN to aid enterprise connectivity needs

Simplifying the connectivity services enterprises require for their remote offices is the goal of Nuage Networks's recently launched Virtualised Network Services (VNS). The Alcatel-Lucent spin-in has expanding the capabilities of its software-defined networking (SDN) product to address applications beyond the data centre.

"Across the WAN and out to the branch, the context is increasingly complicated, with the need to deliver legacy and cloud applications to users - and sometimes customers - that are increasingly mobile, spanning several networks," says Brad Casemore, research director, data centre networks at IDC. These networks can include MPLS, Metro Ethernet, broadband and 3G and 4G wireless.

 

The data centre is a great microcosm of the network - Houman Modarres

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