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Category Archives for "Networking"

Forthcoming: Computer Networking Problems and Solutions

The new book should be out around the 29th of December, give or take a few days. For readers interested in what Ethan and I (and Ryan, and Pete Welcher, and Jordan Martin, and Nick Russo, and… the entire list is in the front matter), the general idea is essentially grounded in RFC1925, rule 11. There is really only a moderately sized set of problems computer system needs to solve in order to carry data from one application to another. For instance, in order to transport data across a network, you need to somehow format the data so everyone can agree on how to write and read it, ensure the data is carried without errors, ensure neither the sender nor the receiver overrun or underrun one another, and find some way to allow multiple applications (hosts, etc.), to talk over the same media. These four problems have somewhat proper names, of course: marshaling, which involves dictionaries and grammars; error control; flow control; and multiplexing. So the first step in understanding network engineering is to figure out what the problems are, and how to break them apart.

Once you understand the problems, then you can start thinking about solutions. As Continue reading

IDG Contributor Network: Are you choosing to lose in a data-driven world?

The Economist has a series of articles right now on the impact of data on business, and pointing out how new data driven companies are rapidly not simply transforming sectors but eliminating competitors. Their argument is that these internet giants are going to require regulators to look at new ways to avoid monopolies and anti-competitive practices. It describes data as a more valuable resource than oil in the modern world.When we look at firms like Amazon, Lyft, Google and what they have done to retail, taxi firms and advertising it is hard to understate just what a dramatic impact these firms have had. Yet fifteen years ago the idea that Amazon would be one of the world’s largest data center service providers would have seemed ridiculous, Amazon are a retailer, what has that to do with data centers? Google are a search engine with some adverts, what have they to do with mobile phones? Apple make some shiny laptops and computers, but mobile phones and speech recognition? Not their thing.To read this article in full or to leave a comment, please click here

History Of Networking – Radia Perlman – Spanning Tree

Radia Perlman joins Network Collective to talk about the history of the Spanning Tree Protocol. Love it or hate it, it’s been a fundamental part of every Ethernet network for the past 30 years and isn’t likely to fade away any time soon.

Radia Perlman
Guest
Jordan Martin
Host
Donald Sharp
Host
Russ White
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Radia Perlman – Spanning Tree appeared first on Network Collective.

History Of Networking – Radia Perlman – Spanning Tree

Radia Perlman joins Network Collective to talk about the history of the Spanning Tree Protocol. Love it or hate it, it’s been a fundamental part of every Ethernet network for the past 30 years and isn’t likely to fade away any time soon.

Radia Perlman
Guest
Jordan Martin
Host
Donald Sharp
Host
Russ White
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Radia Perlman – Spanning Tree appeared first on Network Collective.

Worth Reading: GDPR and Personal Data

With the General Data Protection Regulation (GDPR) becoming effective May 25, 2018, organizations (or rather, organisations) seem to be stressing a bit. Most we speak with are asking, “where do we even start?” or “what is included as personal data under the GDPR?” It is safe to say that these are exactly the questions organizations should be asking, but to know where to start, organizations first need to understand how the GDPR applies to their organization within this new definition for personal data. Without first understanding what to look for, an organization cannot begin to perform data discovery and data mapping exercises, review data management practices and prepare the organization for compliance with the GDPR. —Chris Lippert @ Cloud Security Alliance

The post Worth Reading: GDPR and Personal Data appeared first on rule 11 reader.

My Lexicon: Fexen

Fexen (noun, pl.; pronounced Fex-uhn)

Usage

“Do we have any copper FEXen on those switches?”

Explanation

Fexen is the plural of FEX (the Cisco Nexus Fabric Extender modules). Oh, I know, “FEXes” is just as easy to say, but somehow FEXen seems to work better. Try and use this word in conversation today and see how it feels.

“We have about 20 FEXen distributed around the data center.”

I think you’ll like it.

If you liked this post, please do click through to the source at My Lexicon: Fexen and give me a share/like. Thank you!

What the IoT industry can learn from Apple’s revival of the Mac

This post is an excerpt from a talk I gave at the Reality Virtually Hackathon that makes a similar comparison between virtual reality and augmented reality and the Mac. It holds true for the Internet of Things (IoT) and every emerging technology.Many IoT devices makers build on proprietary platforms. Proprietary hardware is an advantage during the emergence of a new platform — until it is not. A proprietary platform protects intellectual property from reverse engineering because the software is tied to the hardware and it can be tuned for performance.Custom-designed hardware performs better — until it doesn’t. For example, when supercomputers, video bridges and CAD simulators were first introduced, all took advantage of custom, proprietary hardware to gain time to market. Now mature products, almost all the supercomputer, video bridge and CAD simulator suppliers use x86 and Nvidia platforms because these they have open ecosystems that add capabilities and value while reducing cost. To read this article in full or to leave a comment, please click here

Cloudflare London Meetup Recap

Cloudflare London Meetup Recap

Cloudflare helps make over 6 million websites faster and more secure. In doing so, Cloudflare has a vast and diverse community of users throughout the world. Whether discussing Cloudflare on social media, browsing our community forums or following Pull Requests on our open-source projects; there is no shortage of lively discussions amongst Cloudflare users. Occasionally, however, it is important to move these discussions out from cyberspace and take time to connect in person.

A little while ago, we did exactly this and ran a meetup in the Cloudflare London office. Ivan Rustic from Hardenize was our guest speaker, he demonstrated how Hardenize developed a Cloudflare App to help build a culture of security. I presented two other talks which included a primer on how the Cloudflare network is architected and wrapped up with a discussion on how you can build and monetise your very own Cloudflare App.

Since we presented this meet-up, I've received a few requests to share the videos of all the talks. You can find all three of the talks from our last London office meet-up in this blog post.

How Cloudflare Works

App Highlight: Hardenize by Ivan Ristić

Introduction to Building with Cloudflare Apps

Learn More...

Continue reading

Response: Network Management: Why the CLI?

People get angry when I talk about the death of the CLI for network operations. I’m not the only one: I believe that in today’s network device landscape, the CLI is primarily a tool to promote vendor lock-in by training network engineers to rely on and value it so highly. Yes, devices can be configured […]

Get 63% off This 76-in-1 Precision Tool Set For Smartphones, Laptops and Electronics – Deal Alert

This 76-piece repair kit contains everything you need to work on your smartphone, tablet, laptop, stereo, or anything else that requires precision instruments. Everything from screwdrivers, to a suction cup to a plastic spudger, whatever that might be. This kit is highly rated and a #1 best seller on Amazon, where its typical list price of $69.99 has been reduced 63% to $25.99. See this deal now on Amazon .To read this article in full or to leave a comment, please click here

60% off TaoTronics Bluetooth Sweatproof Earbuds With Built in Mic – Deal Alert

Set yourself free from wires and cords with Bluetooth 4.1 and CVC Noise Cancellation 6.0 technology with these sweatproof sport earbuds from ToaTronics. Pair in a few seconds with your smartphone, tablet, or music player, and let your favorite music and podcasts drive you forward. With wireless audio range of 33 ft, you can roam around the house with uncompromised sound quality. aptX proprietary audio compression technology increases the Bluetooth data transmission rate so you can enjoy the purest high-fidelity music and sound. Weighting only 0.6 oz and coming with interchangeable ear buds and hooks, the headset will stay comfortable on your ears even when you are moving around. And with 5 hours of play time and sweat-proof design, you can take it for a good work out, knowing the headset will remain stable as you sweat it out. The typical list price on these earbuds have been discounted 60% down to just $19.99. See this deal on Amazon.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Mixing and matching massively hybrid applications: the future of cloud

A year ago, IDC told us that 68 percent of organizations have adopted cloud for enterprise applications—and that it’s not just about cost, but about revenue increases as well. That study also says that 73 percent of respondents, who spanned both IT and line-of-business users, have a hybrid cloud strategy in place.But when you dig further into those numbers, you’ll find that to most those respondents, “hybrid” means “subscribing to multiple external cloud services.” This can mean some applications in a portfolio run on one cloud while others run on a different cloud. To another 47 percent of those surveyed, “hybrid” means “using a mix of public cloud services and dedicated assets,” which conjures an image of a database running on-site sending data to a web or application server on a public cloud.To read this article in full or to leave a comment, please click here

IDG Contributor Network: SD-WAN will fix business VoIP

“I don’t drink water, period. I live in Los Angeles and the water I get from the tap is lackluster, in terms of quality.”If someone said this, what is the first thought that comes to mind (assuming the person isn’t wearing hemp clothing and has their hair in dreadlocks)?“Have you tried using a water filter?” … is what you and I would probably ask, right?After you read below, this will be the same thing you say when you hear someone say, “VoIP isn’t a good fit for our company because we only have one ISP in the area, and the connection is shaky, at best.”Your response will be “Have you tried using SD-WAN to fix your call quality?”To read this article in full or to leave a comment, please click here

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