Archive

Category Archives for "Networking"

The Blind Men and the Elephant

640px-elephas_maximus_eye_closeupBufferbloat is responsible for much of the poor performance seen in the Internet today and causes latency (called “lag” by gamers), triggered even by your own routine web browsing and video playing.

But bufferbloat’s causes and solutions remind me of the old parable:

It was six men of Indostan, to learning much inclined,
who went to see the elephant (Though all of them were blind),
that each by observation, might satisfy his mind.

      ……. (six stanzas elided)

And so these men of Indostan, disputed loud and long,
each in his own opinion, exceeding stiff and strong,
Though each was partly in the right, and all were in the wrong!

So, oft in theologic wars, the disputants, I ween,
tread on in utter ignorance, of what each other mean,
and prate about the elephant, not one of them has seen!

John Godfrey Saxe

Most technologists are not truly wise: we are usually like the blind men of Indostan. The TCP experts, network operators, telecom operators, router makers, Internet service operators, router vendors and users have all had a grip *only* on their piece of the elephant.

The TCP experts look at TCP and think “if only TCP were Continue reading

NASA Social OA-4 Tours and Launch

In December 2015 I had the distinct honor to be selected to attend a NASA Social event that coincided with the OA-4 launch, an ISS resupply mission. NASA runs these events occasionally to give the world some insight into what goes on at various locations pertaining to the space industry. There’s a lot of really cool work going on, and I’m happy to finally have a chance to publish my experience on this amazing trip.

Home network traffic analysis with a Raspberry Pi 3, a NetGear Switch and Ntop

I had the Raspberry Pi laying around for some time without doing any major function and so was a the NetGear switch [1]. So, I decided to do a weekend project to implement traffic analysis on my home network. I have a PPPoE connection to my ISP that connects to my home router [2]. The … Continue reading Home network traffic analysis with a Raspberry Pi 3, a NetGear Switch and Ntop

Dipping my toes in the IoT pool: Microsoft DevKit IoT Board

In my personal life, I’ve jumped in the SmartHome head first, but I’ve been really reluctant to blur the lines into my professional life. Recently, I saw something that changed all that. The Microsoft IoT DevKit board.

NewImage

What is it?

This is Microsoft hardware product that allows developers to jump into the IoT pool. Specifically, the Microsoft Azure IoT hub pool. This is a very capable board with multiple sensors.

What sensors you ask?

  • Humidity: 
  • Air Pressure
  • Temperature
  • Magnetometer
  • Motion
  • Microphone

Basically, it’s a really good sensor that can grab the majority of the physical measurements that we want to look at in the IoT world. 

What do I do with it?

Right now, this is really just a tech toy for me. I have no specific projects that I’m trying to achieve. Rather this is a device that I’m using to try and really understand HOW the IoT ecosystem works and ensure my employability in years to come. So I don’t have any specific goals, but that’s really ok because Microsoft has been wonderful enough to supply us with the Microsoft IoT DevKit page over at Github which has a few different projects that allow me to grow Continue reading

Automation won’t cost you your job — it could save it

If you’re a regular reader of our blog, you probably do a lot of professional work with networking, manage an enterprise data center or play around with networks as a hobby (if you don’t, close your eyes for just a moment and imagine yourself in a well air-conditioned data center). You also likely know about the day-to-day tasks that maintaining a network requires, and how much time they take out of the day. Or, perhaps you’re a director that’s trying to resolve the issues your networking team keeps having. Has it ever occurred to you that there might be a better way to tackle these daily problems? Sure, what you’re doing now works, but there’s so much else you could be doing if the management of these tasks were optimized. That’s where network automation solutions can step in and give you more free time than you could have dreamed of. Why automation? Well, let’s get into what problems it eliminates and the benefits it brings — you can thank us later!

Problem: A manually configured and operated network

A day in the life of a network engineer includes three layers of regular tasks. At the top, we have troubleshooting operation Continue reading

Building a Sustainable Community Network in Sarantaporo Greece

For over a year now we in the Sarantaporo.gr Non Profit Organization have been in contact with Internet Society in meetings, over online interactions, and through in-person collaboration with people of the organization who visited our village last summer. From the beginning we saw that Internet Society is an organization which we share a lot of common elements with in terms of vision, and that its network is a natural space for our Community Network to be a part of.

In September 2017 we applied for the Internet Society Beyond the Net Funding Programme to approach the organization more closely and pursue funding to finance our Community Network. We are very happy to announce that our proposal was successful and will be funded with $30,000 USD through 2018 and 2019. This grant arrives very timely, in a period of transformation for our Community Network.

Continuously growing since 2010 to expand from Sarantaporo to even more villages in the region, today Sarantaporo.gr Community Network has reached a point where it is no longer possible to keep growing under the previous model, which was heavily dependent on the volunteering work of the nonprofit’s core team. Local inhabitants need to step in and Continue reading

Weekend Reads 020918: The Usual Stuff

The Linux Foundation which has been host to many leading open source networking projects, felt the need to streamline all its various ventures, informed Arpit Joshipura, general manager of networking and orchestration at The Linux Foundation. The six founding open source projects involved in the LFN are FD.io, OpenDaylight, Open Network Automation Platform (ONAP), Open Platform for NFV (OPNFV), PDNA and Streaming Network Analytics System. An additional 83-member organization is participating in LFN. This is significant because members of the Linux Foundation can choose whether they want to join LFN, and they can participate in as many or as few of the projects as they want. —Syeda Beenish @OpenSource

The plunder of more than $500 million worth of digital coins from the Japanese cryptocurrency exchange Coincheck last week has added to a growing perception that cryptocurrencies are particularly vulnerable to hackers. It’s an expensive reminder that like many things in the cryptocurrency world, security technologies—and the norms, best practices, and rules for using them—are still emerging. Not least because of its enormous size, the Coincheck hack could go down as a seminal moment in that process. —Mike Orcutt @Technology Review

The days of pointing to a file cabinet and Continue reading

The Winds of Change From January

Some quick thoughts on networking from my last couple of weeks at Networking Field Day 17 and Tech Field Day Extra at Cisco Live Europe:

  • Cisco is in the middle of turning a big ship away from hardware. All their innovation is coming in the software side of the house. Big announcements around network assurance. It’s not enough any more to do the things. Now you need to prove they were done and show your work. Context and Intent only work if you can quantitatively show that they were applied.
  • Containers are still a thing. Cisco has a new container platform. I also had the chance to chat with a startup called AppOrbit that’s doing some interesting things around containers but including storage and networking. They should be primed for some announcements soon, so stayed tuned for that!
  • Automation is cool again. Well, maybe it never stopped being cool. But thanks to Extreme Networks and Juniper people are really hopping on the train to talk more about removing the limitations of the CLI and doing it with tools like Slack. Check out Lindsay Hill and Matt Oswalt showing this off to people in some finely crafted demos.
  • 2018 is Continue reading

Tips for securing IoT on your network

Judging by all the media attention that The Internet of Things (or IoT) gets these days, you would think that the world was firmly in the grip of a physical and digital transformation. The truth, though, is that we all are still in the early days of the IoT.To read this article in full, please click here(Insider Story)

1 … 1,377 1,378 1,379 1,380 1,381 … 3,350