Internets of Interest for 18th January 2013


Collection of useful, relevant or just fun places on the Internets for 18th January 2013 and a bit commentary about what I’ve found interesting about them:

Musing: On Permananent and Ephemeral Knowledge and Exam Study — EtherealMind – More on study tips that I wrote a couple of years back

So fine, I have to know that, but don’t expect me to remember the CLI within two weeks of the exam. But I will make a point of studying the underlying facts because I will most likely use those in real life.
Now I understand what they mean when they say – “study for the exam, not the real world”.

Teach a man to fish – On Learning to Learn and Certification — EtherealMind – One of my older blog posts on study & learning.

So when you are studying that textbook, and scratching your head about how this is relevant to real life, stop yourself. The purpose is NOT necessarily to understand a practical application, but to enable you to learn how to learn. The next time you are presented with a problem or technology that you don’t understand, you will have the ability to work out what to do.

EMC anoints ‘Elect’ group of IT pros • The Register – LOLOLOLOLLOLOLOLOLOL

EMC says participants “… will receive unprecedented connection into product teams through dedicated liaisons,” while EMC gets “a low-latency, trusted connection into the highest value influencers in our social ecosystem.”

If your abdominals are contracting and it feels like a good idea to find a bowl or bag after reading those extracts from EMC’s emissions on the Elect, a quick search for EMC Elect produces several blog posts from folks who made the cut from among the 270 nominations. All seem pleased and pleasantly surprised. None write that they feel worried about being used to promote EMC and instead see it as a feather in their professional caps.

cocoa-rest-client – A native OS X app for testing HTTP/REST endpoints – Google Project Hosting

CocoaRestClient is a Mac OS X app for testing HTTP/Restful endpoints.

I love curl, but sometimes I need my output XML or JSON pretty printed. I want to be able to save frequent PUT and POST bodies for later and copy and paste from responses easily. Think of this as curl with a light UI.

The goal of this project is to build a lightweight native Cocoa app for testing and debugging HTTP Restful services. This project was greatly inspired by the Java rest-client

Tim O’Reilly’s Key to Creating the Next Big Thing | Wired Business | – I'm feeling inspirational this week, and Tim O'Reilly really hit that button in this article at

Wired: Your new credo these days is “Create more value than you capture.” What does that mean?

Tim O’Reilly: Everybody wants to foster entrepreneurship, but we have to think about the preconditions for entrepreneurship. You grow great crops in great soil. And the soil is the commons. Increasingly, we have monopolistic companies that try to take as much as they can for themselves. And we have a patent and copyright regime that makes sure that nothing goes back into the commons unless by an extraordinary act of generosity. This is not fertile soil for innovation.

It might be arrogant, but I'd like to think that's what the podcast at Packet Pushers does. At least, I hope so.

Start Fresh with Ghostery in the New Year | The Purple Box – Time to check your Ghostery plugin is up to date and tweaked with the latest updates. Keep secure and keep your privacy.

Collection of useful, relevant or just fun places on the Internets for 18th January 2013 and a bit commentary about what I’ve found interesting about them:

TextExpander — PopClip Extensions – Create a TextExpander snippet with the selected text.

Oh, my, YES!

Avior | Marist/IBM Joint Study OpenFlow Research Project – You need to watch the demonstration to comprehend what this can do. And it's only the beginning of what OpenFlow can do. This is an example of why Juniper & Cisco SDN strategy is likely to fail.

Avior is an application built outside of floodlight that gives network administrators a graphical user interface to support their needs. Avior eliminates dependancy on using python scripts or viewing the restAPI in order to monitor or manipulate the network.

Avior supports a number of useful features…

Static flow entry pusher interface. Add, modify, and delete flows easily
Useful error checking and flow verification
Detailed controller, switch, device, port, and flow statistics that update in real time
Easy to use Logical patch panel

Sigcomm White Paper – Tuning ECN for Data Center Networks – Microsoft Research Asia

In this paper, we propose a further look at ECN imple- mentation at the switches, and see if there is a way to ad- dress the above two TCP performance issues with a simple ECN tuning at the switch-side only. First, we have observed that the network latencies across data center networks are extremely low (under a millisecond). This has inspired us to study the use of instant queue length instead of aver- age queue length in ECN. We hypothesize that, if instant queue length is used to trigger ECN, and if the threshold is properly tuned, ECN may actually alleviate the TCP per- formance impact without requiring end-host modifications. We use ECN* in this paper to denote such a scheme in which instant queue length based ECN is used at the switches and standard ECN congestion control is used at the end hosts

VXLAN Primer-Part 1 – BORGcube Blogs – Good details on VXLAN. Lots of hard work in here. Bookmarked for later reference.

Tail-f NCS L2 Q-in-Q Tunnels – YouTube – Tail-F demonstrating their new NCS Management platform configuring Q-in-Q tunnels across multi-vendor network. This is an orchestration tool that I like the look of.