Cumulus content roundup: December

It’s the most wonderful time of the year — that’s right, it’s time for another Cumulus content roundup! We’ve wrapped up all of the best content in a neat little package just for you. (Think of it as an early holiday gift!) Whether you’re interested in centralized configuration or just trying to learn the basics of Linux, this roundup is your roadmap for what’s in this season. The latest articles, videos, industry reports and more are at your fingertips, so get cozy by the fireplace and check out what’s new in open networking trends.

Cumulus content

Linux Networking 101 guide: Searching for an easy, comprehensive guide to Linux networking? Look no further! Download this ebook and start learning the language of the data center.

Forrester’s 2017 Vendor Landscape Report: This report will take you through the characteristics of a network that’s built for the future and help you navigate the vendor ecosystem. Read on to see if your data center is ready for 2018.

Gartner report: How open is your network vendor?: Many vendors claim to have open solutions, but which ones can support those claims? Check out this report to learn the five questions you Continue reading

Introduction to OVN and Red Hat Virtualization

Hi Folks, recently my friend and colleague, Tony James prepared and delivered an excellent webinar internally at Red Hat on how to configure Open Virtual Networking (OVN) in Red Hat Virtualization. For those of you that are unfamiliar with OVN, or what it offers, allow me to provide you with the proper illumination.

Background

Way back in the dark ages, the only way that mere mortals could get encapsulation, segmentation, and other benefits of SDN in RHV was via third party integration. Or if there was an OpenStack deployment that could be tapped into via the RHV Neutron integration. Recently though, native SDN (via OVN) is in Tech Preview in RHV 4.1, and I’m going to spend the next few posts going over the basics.

NOTE – Tech Preview is Red Hat’s way of providing the software bits for folks to try out, but there is no support for software in Tech Preview. The official statement is here. In short, the more interest and bugs filed against Tech Preview, the sooner it gets put in production.

The current fully supported virtual networking in RHV is built around “Linux Bridging”. It’s solid and it’s simple. That is to say that Continue reading

IDG Contributor Network: AWS re:Invent and the 5 fronts of the cloud arms race

For the last six years running, the most important event in cloud computing has been AWS re:Invent, where the market leader announces its latest improvements. This year, 44,000 people descended upon a very crowded set of Las Vegas venues spread across multiple hotels for breakout sessions, certification exams, a diverse expo floor, and the all-important keynotes where the newest offerings were announced.Increasingly, the public cloud arms race is being waged on four fronts, with a fifth quickly emerging. All five had a healthy set of announcements—here are some of the highlights.1. IaaS/PaaS AWS started the cloud revolution with its S3 object storage service in 2006, which was quickly followed by its EC2 compute offering and a set of other IaaS products. As time went by, PaaS services like load balancers, message queues, and databases emerged as key components as well. Both classifications of services are, of course, built on physical hardware that AWS organizes into availability zones and regions.To read this article in full, please click here

Making Education Accessible for All: Vashkar Bhattacharjee’s Story

We recently shared the first part of Vashkar Bhattacharjee’s story. Vashkar is the National Consultant, Accessibility, A2i, Prime Minister’s Office of Bangladesh, and the Program Manager, Young Power in Social Action (YPSA). Here is Part Two.

Setting up an accessible digital talking book system (DAISY) in Bangladesh

After training in Japan, I was armed with knowledge in leadership and technology and wanted to create digital access for people with disabilities in Bangladesh. I wanted to prove that people with disabilities like me can work in our job market, but nobody wanted to believe me. With Young People in Social Action (YPSA), a social development organization in my home district of Chittagong, I worked as a volunteer on creating computerized braille production, which allows for printing to be in done in Braille, thus creating the tools for education for people with visual impairment. Very soon, we obtained funding to establish a digital lab, called ICT and Resource Center on Disability (IRCD), to develop assistive technologies and content for persons with disabilities.

In 2005, I was introduced to the Digital Accessible Information System (DAISY) Consortium, where I received inspiration from international experts to work harder and smarter, and make better use Continue reading

Puerto Rico’s Slow Internet Recovery

On 20 September 2017, Hurricane Maria made landfall in Puerto Rico.  Two and a half months later, the island is still recovering from the resulting devastation.  This extended phase of recovery is reflected in the state of the local internet and reveals how far Puerto Rico still has to go to make itself whole again.

While most of the BGP routes for Puerto Rico have returned, DNS query volumes from the island are still only a fraction of what they were on September 19th  — the day before the storm hit.  DNS activity is a better indicator of actual internet use (or lack thereof) than the simple announcements of BGP routes.

We have been analyzing the impacts of natural disasters such as hurricanes and earthquakes going back to Hurricane Katrina in 2005.  Compared to the earthquake near Japan in 2011, Hurricane Sandy in 2012, or the earthquake in Nepal in 2015, Puerto Rico’s disaster stands alone with respect to its prolonged and widespread impact on internet access.  The following analysis tells that story.

DNS statistics

Queries from Puerto Rico to our Internet Guide recursive DNS service have still not recovered to pre-hurricane levels Continue reading

Worth Reading: Let’s talk about RFC6980

Following my work with the FreeBSD implementation of RFC 6980 I was happy to present my work at last week’s DENOG 9 meeting.
To make it available to anyone who did not meet me there and go into some more detail that would have exceeded the boundaries of the talk, I will cover the topic here. After the preceding work on Windows Server 2016 and the FreeBSD testing, as a Linux user, lover and administrator, I of course wanted to take a look at how different Linux systems complied with the RFC 6980 standard. —Jacky Hammer @ Insinuator

New global internet reliability concerns emerge

Undersea, internet-carrying cables are not protected well enough and there isn’t an alternative in place should they fail.That's according to a new report from U.K.-based Policy Exchange, which outlines potential catastrophic effects that a simple cut in the hosepipe-sized underwater infrastructure could create.Also on Network World: The hidden cause of slow Internet and how to fix it Tsunamis, a vessel dragging an anchor, or even saw-wielding Russians could bring down the global financial system or cripple a solo nation’s internet access, Policy Exchange says in its new study (pdf).To read this article in full, please click here

New global internet reliability concerns emerge

Undersea, internet-carrying cables are not protected well enough and there isn’t an alternative in place should they fail.That's according to a new report from U.K.-based Policy Exchange, which outlines potential catastrophic effects that a simple cut in the hosepipe-sized underwater infrastructure could create.Also on Network World: The hidden cause of slow Internet and how to fix it Tsunamis, a vessel dragging an anchor, or even saw-wielding Russians could bring down the global financial system or cripple a solo nation’s internet access, Policy Exchange says in its new study (pdf).To read this article in full, please click here

Arista brings the benefits of leaf-spine to routing

About a decade ago almost all data centers were built on a traditional three- (or sometimes more) tier architectures that used the spanning tree protocol (STP). That prevented routing loops but also deactivated all the backup links, which accounted for almost half the ports in large environments. This caused organizations to significantly overspend on their networks.Leaf-spine networks, on the other hand, have only two tiers, are much flatter and use something called ECMP (equal cost multi-pathing). So all routes are active, creating a much more efficient network that more agile and costs less.Also on Network World: 10 Most important open source networking projects The traditional three-tier data center was designed to scale up, which was the key requirement in the client/server era. Leaf-spine is optimized for rapid scale out, which has become critical in data centers today, as more and more traffic is moving in an East-West direction. To read this article in full, please click here

Arista brings the benefits of leaf-spine to routing

About a decade ago almost all data centers were built on a traditional three- (or sometimes more) tier architectures that used the spanning tree protocol (STP). That prevented routing loops but also deactivated all the backup links, which accounted for almost half the ports in large environments. This caused organizations to significantly overspend on their networks.Leaf-spine networks, on the other hand, have only two tiers, are much flatter and use something called ECMP (equal cost multi-pathing). So all routes are active, creating a much more efficient network that more agile and costs less.Also on Network World: 10 Most important open source networking projects The traditional three-tier data center was designed to scale up, which was the key requirement in the client/server era. Leaf-spine is optimized for rapid scale out, which has become critical in data centers today, as more and more traffic is moving in an East-West direction. To read this article in full, please click here

CAA of the Wild: Supporting a New Standard

CAA of the Wild: Supporting a New Standard

One thing we take pride in at Cloudflare is embracing new protocols and standards that help make the Internet faster and safer. Sometimes this means that we’ll launch support for experimental features or standards still under active development, as we did with TLS 1.3. Due to the not-quite-final nature of some of these features, we limit the availability at the onset to only the most ardent users so we can observe how these cutting-edge features behave in the wild. Some of our observations have helped the community propose revisions to the corresponding RFCs.

We began supporting the DNS Certification Authority Authorization (CAA) Resource Record in June behind a beta flag. Our goal in doing so was to see how the presence of these records would affect SSL certificate issuance by publicly-trusted certification authorities. We also wanted to do so in advance of the 8 September 2017 enforcement date for mandatory CAA checking at certificate issuance time, without introducing a new and externally unproven behavior to millions of Cloudflare customers at once. This beta period has provided invaluable insight as to how CAA records have changed and will continue to change the commercial public-key infrastructure (PKI) ecosystem.

As of today, Continue reading

J-AUT Course

Hi ,

I have enrolled for Juniper-JAUT Course and looking forward to it.

Below are the details. Its a 5 Day course and am expecting more out of this course.

https://learningportal.juniper.net/juniper/user_activity_info.aspx?id=5186

My main interest lies in YAML / JSON use cases with Juniper Devices and their interaction. I will let you know how the course goes as the day progresses and over all efficiency of the course.

 

-Rakesh

BrandPost: Where Do you Rank? IDC Lists Top Drivers for SD-WAN Adoption

IDC concluded a worldwide survey in September 2017 to learn and report on the key factors driving SD-WAN deployments for enterprises. I’m pleased to see the alignment in the findings with what I wrote in my previous article, SD-WAN Delivers Real Business Outcomes to Cloud-first Enterprises back in September. The results of the survey identified the following top four drivers for deploying an enterprise SD-WAN solution:To read this article in full, please click here

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