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Category Archives for "Networking"

Cisco, Verizon take Information-Centric Networking for a real-world spin

Cisco and Verizon teamed up recently to show off the content-aware technology they say will seriously improve the performance and security of networks of the future, including 5G wireless and IoT environments.Cisco has long been a proponent of the technology known as Information Centric Networking (ICN), which lets applications request data by a name that is based on its content rather than its location (IP address). [ Find out how 5G wireless could change networking as we know it and how to deal with networking IoT. | Get regularly scheduled insights by signing up for Network World newsletters. ] Cisco says that by using such technology the network can locate and retrieve data dynamically from any source – an important feature for future mobile and IoT environments.  As for improving security, Cisco says the technology secures and authenticates the data itself, rather than setting up point-to-point connections to authenticated hosts.To read this article in full, please click here

OCP Summit 2018

Network telemetry was a popular topic at the recent OCP U.S. Summit 2018 in San Jose, California, with an entire afternoon track of the two day conference devoted to the subject. Videos of the talks should soon be posted on the conference web site.

The following articles on this blog cover related topics:
In addition, there were a couple of live sFlow telemetry demonstration in the conference exhibit hall.
The first was a demonstration of leaf and spine fabric visibility using white box switches running the open source Linux Foundation OpenSwitch network operating system. OpenSwitch describes how the open source Host sFlow agent enables standard sFlow instrumentation in merchant silicon based white box switches using OpenSwitch Control Plane Services (CPS), which in turn programs the silicon using the OCP Switch Abstraction Interface (SAI).

The rack in the booth contains a two spine, five leaf network. Each of the switches in the network Continue reading

How Many Bandwidths Does An SD-WAN Need? – Video

Note: This article was first published at Packet Pushers.net on March 5, 2018   I was preparing for a podcast and started comparing the complexity of a private vs. public WAN. I doodled some diagrams and realized that using Internet bandwidth for SD-WAN to replace private bandwidth is actually simpler. Perhaps because the familiar is always […]

Playing with Arista eAPI – Dynamic VLAN Assignment-ish

A note

Before we get started, let me first say that just because we can, doesn’t mean we should.  I got a request to show an example of how dynamic VLAN assingment based on mac-address could work and this is the results of that request. Before anyone takes this code and runs with it, let me first say that you really need to think about whether or not this is a good idea for you and your organization.

If you want dynamic VLAN assignment, there are other ways to accomplish this and I would encourage you to look into them before going down this path.

That being said – It was a fun little project and I wanted to share it with you all.

The Project

For this project, the goal is to write a simple script to help us automatically assign the right VLAN to a host based on the MAC address of that host.

Now we all know there are different ways to do this, like pure mac-authentication using a RADIUS server, or even using a mac-based VLAN configuration, but that wouldn’t be as fun as trying to get this work with Arista’s eAPI now would it?

Continue reading

INE Now Accepts Cryptocurrency Payments!

Got some Bitcoins burning a hole in your wallet? You can now use them, and other forms of digital currency, to pay for your training!

At INE, our goal is to offer the best training, anytime, anywhere, which now includes adding more ways to pay.

How It Works:
All Cryptocurrency transactions will be made via Coinbase, for your convenience.

Which Currencies Are Accepted?
We accept Bitcoin, Bitcoin Cash, Ethereum, and Litecoin.


Have questions about using cryptocurrency with INE? Contact our sales team.

What’s wrong with the IETF. And what’s right

I have not counted the IETF’s I have attended; I only know the first RFC on which I’m listed as a co-author was published in 2000, so this must be close to 20 years of interacting with the IETF community, and I’m pretty certain I’ve attended at least two meetings a year across that time, and three meetings a year in most of those years. Across that time, there has never been a time when I have not been told, at least once, “the IETF is broken.” And there has not been a single time I cannot remember agreeing with the sentiment.

So, how is the IETF broken? The trend that bothers me the most right now is the gold rush syndrome. A new technology is brought into the IETF, and if it looks like it might somehow be “important,” there is a “land rush” as people stake out new drafts, find use cases, find corner cases, and work to develop drafts and communities around those drafts. This generally results in a sort of ossification process, where there are clear insiders and outsiders, an entirely new vocabulary is developed, and the drafts fly so fast and furious there is Continue reading

The Dawn of New Digital Rights for Finnish Citizens

I’m pleased to introduce our new project New Digital Rights MOOC (Massive Open Online Course), that will teach citizens about  their personal data rights through GDPR and MyData frameworks. It is funded by the Internet Society’s Beyond the Net Funding Programme and made possible with volunteers.

The project is a partnership between ISOC Finland Chapter and Open Knowledge Finland. Other NGO’s and associations like Electronic Frontier Finland, Faktabaari, and student organisations will be engaged.

The aim of the project is to make citizens more aware of their digital rights, initially focusing on explaining GDPR (General Data Protection Regulation) and MyData. The solution is to educate people through a MOOC-platform and series of workshops that create content and train people and organizations to use it.

MyData is the biggest part of our work in Open Knowledge Finland at the moment and we have made a whole conference around this Nordic model of personal data management. It is very much entwined with the changes in the GDPR and we felt that while we made people aware of relevant changes in the European data protection, MyData could be explained in parallel to the GDPR, in a separate, cross-referenced module.

As of now, there will not Continue reading

Les débuts des nouveaux droits numériques pour les citoyens finlandais

J’ai le plaisir de vous présenter notre nouveau projet MOOC (Massive Open Online Course) de droits numériques (New Digital Rights) qui enseignera aux citoyens leurs droits en matière de données personnelles à travers les frameworks GDPR et MyData. Il est financé par le programme de financement Beyond the Net de l’Internet Society et rendu possible grâce à des bénévoles.

Le projet est un partenariat entre ISOC Finland Chapter et Open Knowledge Finland. D’autres ONG et associations comme Electronic Frontier Finland, Faktabaari et des organisations d’étudiants seront mobilisées.

Savoir plus (en anglais)

The post Les débuts des nouveaux droits numériques pour les citoyens finlandais appeared first on Internet Society.

The New Way of Generating IPv6 – SLAAC EUI-64 Address Format

There was an old way of generating Interface IPv6 address using SLAAC process (Stateless autoconfiguration). You simply configured that you want SLAAC autoconfiguration and the interface IPv6 was generated by squeezing “FFFE” in hex (11111111 11111110 bits) between two parts of physical MAC address of that interface. Then, after a while, several comments came to IETF about the use of predictable Interface Identifiers in IPv6 addresses. They were pointing to the ease of correlation of host activities within the same network and across multiple networks. If Interface Identifiers are constant across networks this is negatively affecting the privacy and security of

The post The New Way of Generating IPv6 – SLAAC EUI-64 Address Format appeared first on How Does Internet Work.

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