Collection of useful, relevant or just fun places on the Internets for 25th October 2013 and a bit commentary about what I’ve found interesting about them:
Hardware – How eye pattern diagrams work – The Network Sherpa – Love what The Network Sherpa is doing. Putting the fundamentals into fundamentals.
The eye pattern diagram is named after the eye shape in the middle of the diagram above. The purpose of the diagram is to measure the quality of the received electrical or optical signal. Put simply, the bigger the eye opening the better the signal. Before we dig deeper on the measurement we’ll examine how the eye diagram is made.
What You Need to Know: OpenFlow 1.4 | ReliableSDNReliableSDN – This article outlines the changes in the recently released OpenFlow 1.4 standard.
The following functional enhancements make the standard more powerful – and complicated. (Section B.14 of the specification, starting on page 200, contains the definitive summary of the changes.)
Global – Enterprise – US – Tools – Huawei has an emulator for their software platform. Free but registration is required. Runs on Windows and has a graphical interface for network design and testing. Anyone got any feedback on using it.
Enterprise Network Simulation Platform (eNSP) is a free, scalable, and graphic network simulation platform developed by Huawei. By simulating Huawei enterprise routers and switches, eNSP demonstrates real networks. eNSP can simulate large-sized networks, and allow users to exercise device operations and learn network technologies without using real devices.
Hat tip to @northlandboy for the tweet.
OpenDaylight and Those Pesky Southbound APIs | Keeping It Classless – I very much agree that there are no absolutes. There are things happening today and other things happenings tomorrow :
I refuse to get into a religious argument about whether or not OpenFlow is the future, or if it’s crap, because those are absolute statements. In networking, or IT generally, there are really no absolutes. IT almost by definition is a hodge-podge of systems that we integrate togther with protocols and features. Therefore, any solution that is so broad as SDN or SDDC, should focus on including as many tools in the toolchest as possible, then abstracting the use of these tools behind a single, common framework. For me, OpenDaylight is really the first framework that does this, because it’s built from the ground up to be modular, not single-solution.
OpenDaylight will define most of the SDN standards. You should at least be following what it is doing.
EMC accuses Pure Storage of ‘raiding’ its people, IP • The Register – EMC has validated Pure Storage as a serious competitor. Suing employees who move to a startup indicates that the competitor has something to sell and you are feeling nervious.
The filing also reveals that EMC staff are walking to Pure in decent numbers.
“Since last year, not fewer than 30 high-performing employees have departed EMC under suspicious circumstances to join Pure Storage,” it reads. That’s a decent brain drain. Johnson is mentioned as having earned $US1.1m over the last four years. Not many folks would walk away from that kind of payday, so we imagine the other 29 who’ve moved to Pure believed the grass would be greener on the other side.
Also, EMC employees often complain about their internal IT being slow, ponderous and effectively useless but clearly their employee monitoring is deep:
The filing reveals EMC’s ability to monitor employees’ PCs is extensive, detailing it was able to detect that Johnson used his EMC email address to open an account at EMC’s cloud storage service Syncplicity.com, uploaded documents to it and was still using it five days after he departed.
I don’t want to work for a company like this.
Google Web Designer – Thinking about using HTML5 for animations like me ? Google has released a beta tool for doing this. And it’s ‘free’ (but not actually free, there will be a catch somewhere I am sure).
Bring ideas to life across screens – Create engaging, interactive HTML5-based designs and motion graphics that can run on any device.
Display Calibration 101: Step-By-Step With Datacolor’s Spyder4Elite – Why Calibrating Your Display Is So Important – I thought that this was a very good overview on colour calibration from your monitors and laptop screens.
We always recommend calibrating your monitor, regardless of what you want to do with it. It’s just as important to have an accurate and balanced image in front of you, whether you’re editing photos, playing games, watching videos, or working solely with productivity apps. Think of this as performance tuning for your monitor.