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IDG Contributor Network: 13 debts of tunnel networks

Tunnels for networking are not good. We see a real-life example taking place with the twelve Thai boys that were stuck at the end of a tunnel with a very narrow section under water preventing passage. The tunnel offered them only one way out, and the particular path was not passable. This is what happens in networks. We’re thankful for the heroic rescue of these brave boys, but networks don’t always fare as well.You will hear others speak about how a tunnel-based virtual network is the next amazing trend in networking. In fact, an analyst recently told me tunnels are great. And they are, when used for the purpose they were intended. But, using tunnels to get aggregates of packets to go where they wouldn’t go otherwise is dangerous, and will lead to the accumulation of technical debts.To read this article in full, please click here

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IDG Contributor Network: 13 debts of tunnel networks

Tunnels for networking are not good. We see a real-life example taking place with the twelve Thai boys that were stuck at the end of a tunnel with a very narrow section under water preventing passage. The tunnel offered them only one way out, and the particular path was not passable. This is what happens in networks. We’re thankful for the heroic rescue of these brave boys, but networks don’t always fare as well.You will hear others speak about how a tunnel-based virtual network is the next amazing trend in networking. In fact, an analyst recently told me tunnels are great. And they are, when used for the purpose they were intended. But, using tunnels to get aggregates of packets to go where they wouldn’t go otherwise is dangerous, and will lead to the accumulation of technical debts.To read this article in full, please click here

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Worth Reading: Is Everyone Missing the SD-WAN Boat?

What’s in a name? Too much, in many cases, because we tend to use a single very popular name (one with good media visibility) to cover a product space that may have little in the way of uniform features or even missions. We clearly have that problem with SD-WAN. —Tom Nolle @CIMI

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Training Conundrum: Open Source Moves Faster Than Curriculum

There is more interest in training than there is good quality training available, says the Linux Foundation.  

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Cloud, Container, and Serverless Developers Are In Big Demand

Sylabs is offering $2,500 to any non-employee that refers a developer that is eventually hired by the company.

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IDG Contributor Network: What are the best practices when cabling for Wi-Fi?

An infrastructure design consideration that arguably frustrates users, and creates a never-ending headache for network administrators, is the quality of Wi-Fi service in a building. Typically, a poor user experience is one where users have either no signal on their wireless device or see “full bars” but cannot connect to the network.In an office environment poor Wi-Fi performance is undoubtedly an annoyance, but in a hospital, it could prevent medical staff from delivering care in a timely manner. Waiting for a mobile terminal to retrieve the medical history of a seriously ill patient can literally be a matter of life and death.Proper cabling is the foundation of Wi-Fi performance Configuring a wireless access point system (AP) is a complex project and is not the subject of this post, although Aps or AP systems of course plays an important role in Wi-Fi network best practice. To provide network integrators with the best chances of success, the cabling infrastructure must be available to support optimal installation and placement of AP.To read this article in full, please click here

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IDG Contributor Network: What are the best practices when cabling for Wi-Fi?

An infrastructure design consideration that arguably frustrates users, and creates a never-ending headache for network administrators, is the quality of Wi-Fi service in a building. Typically, a poor user experience is one where users have either no signal on their wireless device or see “full bars” but cannot connect to the network.In an office environment poor Wi-Fi performance is undoubtedly an annoyance, but in a hospital, it could prevent medical staff from delivering care in a timely manner. Waiting for a mobile terminal to retrieve the medical history of a seriously ill patient can literally be a matter of life and death.Proper cabling is the foundation of Wi-Fi performance Configuring a wireless access point system (AP) is a complex project and is not the subject of this post, although Aps or AP systems of course plays an important role in Wi-Fi network best practice. To provide network integrators with the best chances of success, the cabling infrastructure must be available to support optimal installation and placement of AP.To read this article in full, please click here

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Would AWS Sell White Box Switches to Enterprises?

The hyperscale public cloud providers such as AWS have built network operating systems that are very simple and only have the features they need and nothing more, said IDC analyst Brad Casemore.

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Visualizing real-time network traffic flows at scale

Particle has been released on GitHub, https://github.com/sflow-rt/particle. The application is a real-time visualization of network traffic in which particles flow between hosts arranged around the edges of the screen. Particle colors represent different types of traffic.

Particles provide an intuitive representation of network packets transiting the network from source to destination. The animation slows time so that the particle takes 10 seconds (instead of milliseconds) to transit the network. Groups of particles traveling the same path represent flows of packets between the hosts. Particle size and frequency are used to indicate the intensity of the traffic flowing on a path.

Particles don't follow straight lines, instead following quadratic Bézier curves around the center of the screen. Warping particle paths toward the center of the screen ensures that all paths are of similar length and visible - even if the start and end points are on the same axis.

The example above is from a site with over 500 network switches carrying hundreds of Gigabits of traffic. Internet, Customer, Site and Datacenter hosts have been assigned to the North, East, South and West sides respectively.
The screen is updated 60 times per second for smooth animation. Active Continue reading

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Oracle’s Blockchain Cloud Service Goes Public

The blockchain service is a part of Oracle's Cloud Platform and is built on The Linux Foundation’s Hyperledger blockchain fabric.

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On the ‘net: The Tradeoffs of Information Hiding

I recently joined Ethan Banks for a Packet Pushers episode around the trade offs of hiding information in the control plane. This was a terrific show; you can listen to it by clicking on the link below.

Today on the Priority Queue, we’re gonna hide some information. Oh, like route summarization? Sure, like route summarization. That’s an example of information hiding. But there’s much more to the story than that. Our guest is Russ White. Russ is a serial networking book author, network architect, RFC writer, patent holder, technical instructor, and much of the motive force behind the early iterations of the CCDE program.

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BiB 047: Arrcus ArcOS Competes With Cisco, Juniper, Arista

Arrcus is a startup that’s built a modern network operating system for the disaggregated networking market. They are running on $15M of Series A funding, and as of 16-July-2018, they have emerged from stealth. In this briefing, Arrcus shared some of the details behind ArcOS, their core product offering.

The post BiB 047: Arrcus ArcOS Competes With Cisco, Juniper, Arista appeared first on Packet Pushers.

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IDG Contributor Network: The 5 pillars of cloud data management

As more and more businesses adopt cloud services, seizing on the latest software tools and development methodologies, the lines between them are blurring. What really distinguishes one business from the next is its data.Much of the intrinsic value of a business resides in its data, but we’re not just talking about customer and product data, there’s also supply chain data, competitor data, and many other types of information that might fall under the big data umbrella. Beyond that there are a multitude of smaller pieces of data, from employee records to HVAC system logins, that are rarely considered, but are necessary for the smooth running of any organization. And don’t forget about source code. Your developers are using cloud-based repositories for version control of application code. It also needs to be protected.To read this article in full, please click here

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Network Break 193: Broadcom Acquires CA; Intel Picks Up eASIC

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Why Performance Matters in a 5G World

VNFs that leverage the latest server technology and are architected for high data plane throughput are the best path to building the high-speed, high-capacity networks that 5G will require.

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Worth Reading: Shutting down a BGP Hijack Factory

It started with a lengthy email to the NANOG mailing list on 25 June 2018: independent security researcher Ronald Guilmette detailed the suspicious routing activities of a company called Bitcanal, whom he referred to as a “Hijack Factory.” —Doug Madory @Dyn

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Converting and manipulating image files on the Linux command line

Most of us probably know how wonderful a tool Gimp is for editing images, but have you ever thought about manipulating image files on the command line? If not, let me introduce you to the convert command. It easily coverts files from one image format to another and allows you to perform many other image manipulation tasks as well -- and in a lot less time than it would take to make these changes uses desktop tools. Let's look at some simple examples of how you can make it work for you.Converting files by image type Coverting an image from one format to another is extremely easy with the convert command. Just use a convert command like the one in this example:To read this article in full, please click here

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Taking the temperature of IoT for healthcare

The Internet of Things (IoT) is full of promises to transform everything from transportation to building maintenance to enterprise security. But no field may have more to gain than the healthcare industry. Healthcare providers and device makers are all looking to the IoT to revolutionize the gathering of healthcare data and the delivery of care itself.But while many of those benefits are already becoming reality, others are still on the drawing board. Two very different IoT healthcare stories crossed by desk this month — taken together they provide a surprisingly nuanced picture of healthcare IoT.[ For more on IoT, see tips for securing IoT on your network and our list of the most powerful internet of things companies. | Get regularly scheduled insights by signing up for Network World newsletters. ] Smart bandages still in prototype First, I was excited to hear about the development of advanced prototypes of “smart bandages.” Developed by researchers at Tufts University using flexible electronics, these smart bandages not only monitor the conditions of chronic skin wounds, but they also use a microprocessor to analyze that information to electronically deliver the right drugs to promote healing. By tracking temperature and pH of Continue reading

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The Week in Internet News: Startup Finds a Way to Glue Fiber to Roadways

Why don’t we glue it in the road? A technology startup has patented a way to integrate broadband fiber to blacktop, reports Motherboard. The patented technique, inspired by dentistry, uses a blend of resins to stick fiber optic cables to roads.

Major spending to fix IoT security: The Internet of Things security market will grow to US$6 billion by 2023, with spending to rise 300 percent between 2018 and 2023, according to Juniper Research. However, poor long-term device support and little fear of ramifications will keep security spending on connected homes lagging behind other markets, the research firm says.

Data breaches cost big bucks: The average cost of a data breach is $3.86 million, up more than 6 percent from last year, according to a study from IBM and the Ponemon Institute. Compromised organizations took 197 days to identify a breach and an additional 69 days to contain it, reports IT Pro. A data breach cost organizations an average of $148 per lost or stolen record.

AI takes over the world: About three-quarters of all consumers have interacted with artificial intelligence systems, reports ComputerWeekly.com. A Capgemini survey of 10,000 consumers found, however, that more than half of consumers prefer Continue reading

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Free Webinars and Videos Are Now Easier to Spot

Another summer break project: replacing the stars next to webinar names in descriptions of various technology areas (example: Data Center) with something more useful. Turns out that marking the webinar title as being Free or having Free items works really well.

Bonus feature: clicking on show free content shows you the content available with free subscription.

During the summer break, I’m publishing blog posts about the projects I’m working on. Regular blog posts will return in autumn.