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Category Archives for "Networking"

The Week in Internet News: Massachusetts Town Says ‘No Thank You’ to Broadband Network

Build your own: A Massachusetts town has declined an offer from a major ISP to build a high-speed broadband network and instead will create its own, the Boston Globe reports. While a locally owned network will initially cost more, residents of Charlemont say they want local control and local customer service.

Congo shuts it off: The government of the Democratic Republic of Congo has shut down the Internet in several cities after a much-delayed presidential election, the BBC reports. Opposition candidate Martin Fayulu’s campaign accused the government of ordering the shutdown to avoid broadcasting his “overwhelming victory.” The shutdown in the Congo shows that China’s philosophy of Internet censorship is spreading, CNN comments.

Bangladesh, too: Meanwhile, Bangladesh ordered its own mobile network shutdown related to an election, Engadget reports. The country’s Telecommunication Regulatory Commission shut down 3G and 4G mobile data ahead of its Dec. 30 parliamentary elections to “prevent rumors and propaganda” from influencing the vote.

Blockchain marries IoT: Some large companies are looking for ways to use the blockchain technology with the Internet of Things, Network World says. Volkswagen is one of the companies, and automotive uses for blockchain include authenticating mileage for a lease return, or remote, Continue reading

5G versus 4G: How speed, latency and application support differ

You've probably already heard about 5G, the new cellular technology that's poised to bring massive change to both mobile and fixed wireless data networks. What you may be wondering is how 5G differs from 4G, the current cellular network standard, and what benefits the new technology will bring both enterprises and individual users.To bring you up to speed on 5G's structure and capabilities, and how it improves on 4G technology, here's a quick update:What is 5G? As the latest step forward in cellular network evolution, 5G will see untold thousands of small antennas deployed onto cell towers, utility poles, lampposts, buildings and other public and private structures. The technology, which is designed to supplement rather than replace current 4G networks, promises to accelerate cellular data transfer speeds from 100 Mbps to 10 Gbps and beyond, a massive boost that will make next-generation wireless competitive with even the fastest fiber-optic wired networks.To read this article in full, please click here

VyOS 1.2.0 Epa2 Realased

Finally, VyOS 1.2 epa2 ISO live image is released to subscribers. VyOS is a Linux-based network operating system that provides software-based network routing, firewall, and VPN functionality.

Free subscription is available for contributors, nonprofits and educational and research institutions, and both long-time contributors. Everyone who contributed before the release model change gets a perpetual subscription, the amount of contributions doesn’t matter. After that, contributing within a given year will give us a yearly subscription. If you are not a subscriber you can still download VyOS rolling release or built the ISO image from the source code.

You can use my Bash and Expect scripts to automatize VyOS 1.2.0 installation to VMware disk image. The scripts are available in the Script (1.1) section. Firstly, run the script  deploy_vyos-1.2.0.sh and after the ISO images boots up, you can run the second script  install_vyos-1.2.0.sh. You can run the image using GNS3 project and test open-source routing.

Large Layer-2 Domains Strike Again…

I started January 2018 blogging with a major service provider failure. Why should 2019 be any different? Here’s what Century Link claimed was causing two-day outage (more comments here).

Supposedly it was a problem with the management network used by their optical gear, but it looks a lot like a layer-2 network spanning 15 data centers and no control-plane policing on the managed devices… proving yet again that large-scale layer-2 networks are a really bad idea.

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StackStorm ChatOps Integration

StackStorm is IFTTT for ops. Its original claim to fame was popularizing chat driven workflows for ops know as ChatOps. In this post I will cover integrating ST2 with Slack to enable ChatOps. Lab Environment The ST2 instance connects out to Slack which is a SAAS application. This means...

Whither Network Engineering? (Part 3)

In the previous two parts of this series, I have looked at the reasons I think the networking ecosystem is bound to change and why I think disaggregation is going to play a major role in that change. If I am right about the changes happening, what will become of network engineers? The bifurcation of knowledge, combined with the kinds of networks and companies noted in the previous posts in this series, point the way. There will, I think, be three distinct careers where the current “network engineer” currently exists on the operational side:

  1. Moving up the stack, towards business, the more management role. This will be captured primarily by the companies that operate in market verticals deep and narrow enough to survive without a strong focus on data, and hence can survive a transition to black box, fully integrated solutions. This position will largely be focused on deploying, integrating, and automating vertically integrated, vendor-driven systems and managing vendor relationships.
  2. Moving up the stack, towards software and business, the disaggregated network engineering role (I don’t have a better name for this presently). This will be in support of companies that value data to the point of focusing on its management Continue reading
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