Tag Archive for Networking

Katy Perry Connected to SDN

Katy Perry Connected to SDNNetworking gear manufacturer Adtran (ADTN) Vice President of Worldwide Sales and Marketing Chris Koeneman recently made software-defined networking (SDN) sexy (Like it really needed the help LOL). He successfully connected pop diva Katy Perry and Network Virtualization.

 

 Katy Perry and Network Virtualization

Proving why he is a VP, he also was able to connect software-defined networking, Global Warming, and the Loch Ness Monster.

software defined networking, Global Warming and the Loch Ness Monster.

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And who says that SDN isn’t sexy?

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

Whats a Petabit Network

Whats a Petabit NetworkSeems like it was a couple of months ago, we were excited about fiber optic cable that twisted light to carry data at 1.6 Tbps per strand. Now a Petabit network is the new benchmark. U.K. and Japanese researchers mashed up software-defined networking (SDN) and multicore fiber to produce the first Petabit pipe according to Kevin Fitchard at GigaOM. A Petabit is one quadrillion (1,000,000,000,000,000 or 1015) bytes binary digits or one thousand Terabits.

Petabit network uses multicore fibers

Whats a Petabit NetworkThe researchers mashed up multicore fibers and SDN to makes very high-speed networks programmable. GigaOM speculates this will allow carriers to adjust the network capacity and latency to meet the needs of traffic traveling over their networks. First, GigaOM explains that the fiber is unlike today’s single strands of glass, or cores, that carry a single beam of light down the fiber. Multicore fiber is exactly what its name implies: multiple cores each carrying a single core’s worth of capacity over the same link. Professor Dimitra Simeonidou at the University of Bristol called current single-core fiber a capacity bottleneck.

Space Division Multiplexed

The multicore group, led by NICT and NTT in Japan which built a 450 km (280 miles) section of fiber optics using 12 cores in two rings capable of transmitting 409 Tbps in either direction. That’s 818 Tbps in total. Which is within spitting distance of seemingly mythical Petabit speeds according to GigaOM. The MCF research relies on Space Division Multiplexed (SDM) provided by the multicore fibers.

ResearcherIn order to control the massive bandwidth, a team from the High Performance Networks Group at the University of Bristol created an OpenFlow software-based control element to manage those enormous capacities. The Brits implemented an interface that dynamically configures the network nodes so that it can more effectively deal with application-specific traffic requirements such as bandwidth and Quality of Transport.

According to the researchers, this was the first time SDN was used on a multicore network. The University of Bristol presser announcing the new technology says this technology will overcome critical capacity barriers, which threaten the evolution of the Internet.

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OK, so that really – really – really fast. We also know from a 2011 New Scientist article that the total capacity of one of the world’s busiest routes, between New York and Washington DC, is only a few Terabits per second. With bandwidth-hungry applications like cloud computing, social media, and video-streaming continuously growing it forces network planners at firms like AT&T (T), Verizon (VZ), and the NSA to find new ways to grow their capacity.

Data center

Comcast (CMCSA) just finished a 1 Tbps network field trial on a production network between Ashburn, VA, and Charlotte, NC. Most likely the first place Pbps networking will be used is in the mega-data centers of the likes of Google (GOOG), Facebook (FB), or Microsoft (MSFT).

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

Ford Studies Space Bots for Better Cars

IFord Studies Space Bots for Better Carsn its efforts to build a better, connected carFord (F) is doing research in a rather odd place the International Space Station. at GigaOM is reporting that the Dearborn, Michigan-based automaker is entering into a three-year project with St. Petersburg Polytechnic University to study how space-based research and exploration robots communicate through telematics networks.

Ford logoWhat do space robots have to do with cars? The article explains that the next generation of space-based robots will be some of the most hyper-connected machines in the universe, relying on multiple radio technologies to communicate with the space station, the astronauts they’re meant to help, and human controllers back on Earth. Though robots will be able to act with some autonomy, they’ll constantly be coordinating with computers and maybe even other robots.

Ford believes that the future connected car will function much the same way, acting semi-autonomously while coordinating its activities with cloud traffic management systems as well as the highway infrastructure and vehicles around them. Just as robots use multiple radio technologies to keep up those different “tethers” to mission control, future cars will come outfitted with multiple network links, from LTE to dedicated short-range communications (DSRC) to Wi-Fi mesh.

Robonaut 2What Ford is particularly interested in are the redundancies that St. Petersburg Polytechnic is developing for its robot telematics networks. As you can imagine, having your control link to a robot cut isn’t something any astronaut wants to deal with — in the hazardous environment of space or in the limited confines of a space station, retrieving your suddenly unresponsive robot is a lot harder than it sounds.

But that broken control link could then be routed over different networks. They could use a wireless local area network intended for internet access, or a direct radio link to another robot. The guy with the joystick in his hand may have to take a more circuitous route to communicate with his metallic friend, but he’ll still be able to communicate.

DLR Justin humanoid robotThe blog says that the same principle applies to the connected car. As cars become more intelligent and autonomous, they’ll depend on an array of sensors and network connections to feed them information. Cars will form vast constantly shifting ad hoc networks, transmitting information to one another about their acceleration, braking, lane changes, and even eventual destinations, which in turn will allow them to coordinate their driving. Vehicles will also communicate with highway infrastructure around them and connect to the internet through cellular connections. According to Ford technical leader in systems analytics Oleg Gusikhin:

“We are analyzing the data to research which networks are the most robust and reliable for certain types of messages, as well as fallback options if networks were to fail in a particular scenario. In a crash, for example, a vehicle could have the option to communicate an emergency though a DSRC, LTE or a mesh network based on the type of signal, speed and robustness required to reach emergency responders as quickly as possible.”

Though Ford’s initial focus is on using telematics redundancy to route emergency communications, GigaOM concludes that it is it’s easy to see how these multi-node networks could be used in other scenarios.

SateliteMr. Fitchard argues that If the vehicle-to-vehicle radios in your car were to suddenly go down, chances are you’d want to take direct control of the wheel, but that doesn’t mean your car has to go off-grid. Other radios could communicate with the vehicle-to-infrastructure network or even the cloud through a cellular connection, which could then pass on your car’s sensor data to other vehicles around you. Those other vehicles could in turn use the same channels to pass key information back to your car, for instance, warning you of accidents or traffic jams ahead.

If vehicles were able to securely share their connections, we could always communicate with the internet and critical transportation systems by the most efficient – and often cheapest — means possible. So say instead of streaming high-quality audio over an expensive LTE connection, cars could use their vehicular mesh to pass the stream along from a highway access point car to car until it reached your dashboard.

Ford’s project with St. Petersburg Polytechnic will focus on multiple robots, including the General Motors (GM) – NASA-designed Robonaut 2, which is already aboard the ISS; the European Space Agency’s Eurobot Ground Prototype, a robotic assistant designed to aid astronauts on a planet’s surface, and Justin, a humanoid robot designed by Germany’s DLR for fine-grained manipulation of objects

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I covered GM’s Robonaut earlier as well as connected cars, here and here.

Related article
  • Ford pioneering the use of robotic test drivers (kbb.com)

 

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

Twisted Light Speeds Up Internet

Twisted Light Speeds Up InternetAll the data the reaches every Internet-connected home, business, and mobile device get there via thousands of miles of laser-filled glass, copper, or plastic wires. Firms large and small are constantly developing new ways to pack as much data as possible into these cables (rb- I’ve covered many of these developments here, here, and here). Here is a new theory that uses twisted light.

Multi Mode FiberSigne Brewster at GigaOM wrote about a major leap in how much data Comcast (CMCSA)AT&T (T), and Verizon (VZ) can send down the Internet tubes. Researchers at Boston University and the University of Southern California were able to send 1.6 terabits per second of data (rb- equal to transmitting eight Blu-Ray DVDs every second) 1 kilometer in the lab. They have developed data beams that travel in a spiral instead of a straight line without getting jumbled together.

Orbital angular momentum beams

They keep the beams in order by generating optical vortices (a.k.a orbital angular momentum, or OAM beams) with what ScienceNews called a spatial light modulator. Most researchers thought that OAM beams were unstable in fiber. That was until Siddharth Ramachandran, an electrical engineer, and leader of the Boston University team designed an optical fiber that can propagate the twisted light. The BU team created an OAM fiber with four modes (varying index of refraction an optical fiber typically has two modes) and showed that for each mode, they could send data through a one-kilometer fiber in different colors, resulting in a transmission capacity of 1.6 terabits per second.

spatial light modulator.The DARPA-funded search for ways to squeeze ever more information into the fiber-optic cables that carry it could not come at a better time as mobile devices fuels rapidly growing demands on the Internet. BU’s Ramachandran told Futurity.org, “Our discovery …  has profound implications for a variety of scientific and technological fields that have exploited the unique properties of OAM-carrying light, including the use of such beams for enhancing data capacity in fibers.”  The result is more data in the same length of cable. Science (subscription required) published the new research in its June 28 edition.

10 beams of twisted light in custom fiber

The spiral beams can be combined with existing bandwidth boosting techniques, such as sending many beams through a cable at once according to the author. The spiral beams are sent along different paths and made to be different colors, which differentiates them and lowers the computing necessary to process them once they reach their destination.

Mad scientistThe researchers say they can send up to 10 concurrent beams through their custom fiber. They hope to squeeze more data into each of those beams using methods already exploited by the telecom industry. “We showed a new degree of freedom in which we could transmit information,” says Professor Ramachandran.

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As this technology sits now, it has limited use. The 1.1 Km distance will limit it to the data center, once Cisco (CSCO), Intel (INTC), and HP (HPQ) figure out how to deal with the data.

orbital angular momentumThen there is the issue of re-wiring the backbone with new cables to accept the OAM beams, at&t alone has 77,000 route miles (PDF) of fiber optic cable in the U.S. The BU professor told GigaOM that the team manufactured its fiber at a commercial facility using standard methods, so if it were mass-produced, the fiber should not cost much more than those now in use.

The current speed record, set in 2011, is 100 Tbps, 1.6 Tbps seems kind of wimpy in comparison. which is faster than this cable.

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

When GigE is not enough

When GigE is not enoughNew research at Alcatel-Lucent‘s (ALU) Bell Labs moves the speedometer up to 400 Gbps. Jordan Novet explains in the GigaOm article, A gigabit is not enough. New research takes us to 400 Gbps. According to the article, the Bell Lab researchers have figured out a way to cancel out the noise inside fiber data transmission. They cancel the noise, in the same way, your Bose noise-canceling     headphones work, by sending more information to counter the noise of the crying kid in 4-C on Flight 1501.

Phase conjugation sends “twin waves” of light down the fiber in opposing phases,The Bell Labs team calls this “phase conjugation.” According to Nature Photonics (rb- it will cost you $32.00 the read the actual article), this means sending two streams of data through a single fiber-optic pipe. Phase conjugation sends “twin waves” of light (information) down the fiber in opposing phases, rather than just one. Both streams are pulled back together at the destination to compare the streams and remove the noise. The clean output lets Bell Labs crank up the power to drive the signal at higher speeds further.

Mr. Novet explains that the pairing of signals, in essence, cancels out the ups and downs, peaks and troughs, in physics terms, of data. That means the signal-to-noise ratio improves, which lets fiber optic communications travel farther without more gear along the way to boost the signal. The researchers used this technique to do 400 Gbps across the record distance Fiber optic cableof over 7,900 miles.

Lead author Dr. Xiang Liu told BBC News, “This concept, looking back, is quite easy to understand, but surprisingly, nobody did this before.”

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Most of the articles are impressed with the distance the Bell Labs researchers were able to achieve. Phase conjugation may eventually allow telcos to deploy trans-continental links or undersea links without having to deploy mid-span signal re-generators.

Deep sea diverThe GigaOm article points out that speeds faster than 400 Gbps are not unheard of. I have covered the increasing speeds here, here, and here. GigaOm points out that researchers have managed to send data at speeds exceeding 100 terabits per second, although it wasn’t clear how far the speeds could be sustained. Last year Verizon clocked in at 21.7 terabits per second across more than 900 miles of broadband with the help of NEC’s “superchannels.”

The Bell Labs researchers have taken a different tack.  This is a huge deal because it looks like it’s possible to get higher speeds without replacing hardware at the bottom of the sea.

 

Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.