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Category Archives for "Networking"

IPv6 Link-Local Addresses and VLAN Interfaces

One of my readers sent me an email that’s easiest paraphrased into: “Why can’t I have a different IPv6 link-local address (LLA) on every access port connected to a VLAN interface?”

There’s probably nothing stopping someone from implementing such an approach, but it would go against the usual understanding of how bridging and routing interact in L2+L3 switches.

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Interface basics on the Juniper MX

I’ve been spending more time on the MX recently and I thought it would be worthwhile to document some of the basics around interface configuration.  If you’re like me, and come from more of a Cisco background, some of configuration options when working with the MX weren’t as intuitive.  In this post, I want to walk through the bare bone basic of configuring interfaces on a MX router.

Basic L3 interface

ge-0/0/0 {
    unit 0 {
        family inet {
            address 10.20.20.16/24;
        }
    }
}

The most basic interface configuration possible is a simple routed interface. You’ll note that the interface address is configured under a unit. To understand what a unit is you need to understand some basic terminology that Juniper uses. Juniper describes a physical interface as an IFD (Interface Device). In our example above the IFD would be the physical interface ge-0/0/0. We can then layer one or more IFL (Interface Logical) on top of the IFD. In our example the IFL would be the unit configuration, in this case ge-0/0/0.0. Depending on the configuration of the IFD you may be able to provision additional units. These additional units (Logical interfaces (IFLs)) Continue reading

Google, IBM look to mimic the human brain

Several years ago, there were reports that an IBM artificial intelligence (AI) project had mimicked the brain of a cat. Being the smartass that I am, I responded on Twitter with, “You mean it spends 18 hours a day in sleep mode?”That report was later debunked, but the effort to simulate the brain continues, using new types of processors far faster and more brain-like than your standard x86 processor. IBM and the U.S. Air Force have announced one such project, while Google has its own.+ Also on Network World: Machine learning proves its worth to business + Researchers from Google and the University of Toronto last month released an academic paper titled “One Model To Learn Them All,” and they were pretty quiet about it. What Google is proposing is a template for how to create a single machine learning model that can address multiple tasks.To read this article in full or to leave a comment, please click here

Google, IBM look to mimic the human brain

Several years ago, there were reports that an IBM artificial intelligence (AI) project had mimicked the brain of a cat. Being the smartass that I am, I responded on Twitter with, “You mean it spends 18 hours a day in sleep mode?”That report was later debunked, but the effort to simulate the brain continues, using new types of processors far faster and more brain-like than your standard x86 processor. IBM and the U.S. Air Force have announced one such project, while Google has its own.+ Also on Network World: Machine learning proves its worth to business + Researchers from Google and the University of Toronto last month released an academic paper titled “One Model To Learn Them All,” and they were pretty quiet about it. What Google is proposing is a template for how to create a single machine learning model that can address multiple tasks.To read this article in full or to leave a comment, please click here

What’s the difference between SDN and NFV?

SDN, NFV & VNF are among the alphabet soup of terms in the networking industry that have emerged in recent years.Software defined networking (SDN), network function virtualization (NFV) and the related virtual network functions (VNF) are important trends. But Forrester analyst Andre Kindness says vague terminology from vendors has created a complicated marketplace for end users evaluating next-generation networking technology. “Few I&O pros understand (these new acronyms), and this confusion has resulted in many making poor networking investments,” he says.So what’s the difference between SDN, NFV and VNF?SDN: Software defined networking To read this article in full or to leave a comment, please click here

What’s the difference between SDN and NFV?

SDN, NFV & VNF are among the alphabet soup of terms in the networking industry that have emerged in recent years.Software defined networking (SDN), network function virtualization (NFV) and the related virtual network functions (VNF) are important trends. But Forrester analyst Andre Kindness says vague terminology from vendors has created a complicated marketplace for end users evaluating next-generation networking technology. “Few I&O pros understand (these new acronyms), and this confusion has resulted in many making poor networking investments,” he says.So what’s the difference between SDN, NFV and VNF?SDN: Software defined networking To read this article in full or to leave a comment, please click here

W3C embraces DRM—puts itself on the wrong side of history

Last week, the World Wide Web Consortium (W3C)—the organization with the purpose of standardizing aspects of the "Web"—voted to endorse DRM on the web. It’s a move that is in direct opposition to the W3C's mission statement—and puts them squarely on the wrong side of history.Specifically, what the W3C is approving is a specification called Encrypted Media Extensions (EME)—an extension to existing HTML to make implementing playback restrictions a "standard" across all web browsers. Contradictory statements from the W3C These sorts of restrictions (DRM) are, by definition, created for the sole purpose of making it harder for people to see/hear/consume some piece of content—a movie, a song, a book, an image, etc. —often based on their hardware, software or geographical location.To read this article in full or to leave a comment, please click here

Worth Reading: Moving Computing to the Edge (Again)

Our perception of what makes a data center is shifting all the time. We’ve already seen a move away from the large, monolithic bricks and mortar structures of old and seeing new manifestations in smaller form factors. … Project Volutus, with hundreds of Kilowatts of compute capacity in each location, makes it possible to run data center scale workloads at the edge, doing everything from IoT data ingestion to distributed machine learning on GPUs. —The New Stack

The post Worth Reading: Moving Computing to the Edge (Again) appeared first on rule 11 reader.

Complexity and the Thin Waist

In recent years, we have become accustomed to—and often accosted by—the phrase software eats the world. It’s become a mantra in the networking world that software defined is the future. full stop This research paper by Microsoft, however, tells a different story. According to Baumann, hardware is the new software. Or, to put it differently, even as software eats the world, hardware is taking over an ever increasing amount of the functionality software is doing. In showing this point, the paper also points out the complexity problems involved in dissolving the thin waist of an architecture.

The specific example used in the paper is the Intel x86 Instruction Set Architecture (ISA). Many years ago, when I was a “youngster” in the information technology field, there were a number of different processor platforms; the processor wars waged in full. There were, primarily, the x86 platform, by Intel, beginning with the 8086, and its subsequent generations, the 8088, 80286, 80386, then the Pentium, etc. On the other side of the world, there were the RISC based processors, the kind stuffed into Apple products, Cisco routers, and Sun Sparc workstations (like the one that I used daily while in Cisco TAC). The argument Continue reading

ISOC Rough Guide to IETF 99: Internet Infrastructure Resilience

IETF 99 is next week in Prague, and I’d like to take a moment to discuss some of the interesting things happening there related to Internet infrastructure resilience in this installment of the Rough Guide to IETF 99.

Simple solutions sometimes have a huge impact. Like a simple requirement that “routes are neither imported nor exported unless specifically enabled by configuration”, as specified in an Internet draft “Default EBGP Route Propagation Behavior Without Policies”. The draft is submitted to IESG and expected to be published as a Standards Track RFC soon.

Andrei Robachevsky

MIT IoT and wearable project foretells the future of industrial safety

The IoT in the commercial sector might better be called the Internet of Prototypes, the IoP.Few of the components for building the ubiquitous IoT that the future holds are available today. The best way to envision the future is by prototyping. Prototypes of mission-critical or high-ROI applications will tease money out of research budgets to build them. All the prototypes will lead to a greater understanding, and when the cost of the problem matches the development investment  the prototypes will become products. With cost reduction and standardization, products could become generalized extensible platforms.+ Also on Network World: How industrial IoT is making steel production smarter + MIT built a fitting prototype that could, with further development, scale into a platform. A multidisciplinary team from the MIT Design Lab led by MIT Media Lab researcher Guillermo Bernal won best research paper at the Petra Conference last month for the team’s work applying IoT and wearables to industrial safety. The sophisticated and purpose-built prototype at the center of the research makes the paper “Safety++. Designing IoT and Wearable Systems for Industrial Safety through a User-Centered Design Approach” extremely tangible and predictive about how the IoT will unfold.To Continue reading

MIT IoT and wearable project foretells the future of industrial safety

The IoT in the commercial sector might better be called the Internet of Prototypes, the IoP.Few of the components for building the ubiquitous IoT that the future holds are available today. The best way to envision the future is by prototyping. Prototypes of mission-critical or high-ROI applications will tease money out of research budgets to build them. All the prototypes will lead to a greater understanding, and when the cost of the problem matches the development investment  the prototypes will become products. With cost reduction and standardization, products could become generalized extensible platforms.+ Also on Network World: How industrial IoT is making steel production smarter + MIT built a fitting prototype that could, with further development, scale into a platform. A multidisciplinary team from the MIT Design Lab led by MIT Media Lab researcher Guillermo Bernal won best research paper at the Petra Conference last month for the team’s work applying IoT and wearables to industrial safety. The sophisticated and purpose-built prototype at the center of the research makes the paper “Safety++. Designing IoT and Wearable Systems for Industrial Safety through a User-Centered Design Approach” extremely tangible and predictive about how the IoT will unfold.To Continue reading

We created a culture of visionaries. Here’s how you can, too.

We’re both honored and thrilled to announce that Cumulus Networks has been recognized as a “Visionary” in the Gartner Magic Quadrant for Data Center Networking. You can download this highly-anticipated report here, and learn about other major trends in the industry.

So, what’s it mean to be a visionary? According to Gartner, “Visionaries have demonstrated an ability to increase the features in their offerings to provide a unique and differentiated approach to the market. A visionary has innovated in one or more of the key areas of data center infrastructure, such as management (including virtualization), security (including policy enforcement), SDN and operational efficiency, and cost reductions.”

We couldn’t be happier to be recognized, and to us, it means our company vision has paid off. We’ve created a culture of visionaries through inquisitive, innovative and bold leadership, and these same traits are seen in both our philosophy and our technology. As more and more organizations embrace web-scale IT, we expect to keep pushing the technology forward — always striving for a better network.

With 96% of Gartner’s survey respondents finding open networking to be a relevant buying criterion, and with the adoption of white-box switching to reach 22% by 2020, it’s Continue reading

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