SDN with Raspberry Pi and Zodiac FX

SDN with Raspberry Pi and Zodiac FX
Experimenting with Software Defined Networks (SDN) on real hardware has become a lot easier since I discovered the Zodiac FX switch from Northbound Networks. This 4-port switch supports Openflow v1.0 and v1.3, and it supports many Openflow controllers. This post describes the process of connecting the Zodiac FX switch with a Raspberry Pi, which runs ...

POpCORN for document collection management

POpCORN for document collection management
Do you have a large collection of PDF documents and you find that managing the collection is a challenge? I looked into several Document Management solutions, such as these  and these , but I found they are generally too complicated for my requirements. All I needed was a way to organize my documents into topics ...

For safety’s sake let cars talk

For safety’s sake let cars talk
Earlier this year, the U.S. National Highway Traffic Safety Administration announced it would begin working on enabling vehicle-to-vehicle (V2V) communication technology for light vehicles [1]. This step is part of the agency’s effort to improve transportation safety and it is a signal to the transportation-related industries to begin the deployment phase of this cutting edge ...

Graph Layout – Part 1

Graph Layout - Part 1
Many applications, especially those that require visualizing complex information, rely on manipulating and presenting data as graphs composed of nodes and links. A graph, in the mathematical context, is a set of objects represented as vertices, or nodes, and a set of links connecting some pairs of objects. The graph may be used in social ...

Vehicles communication and the mysterious traffic jams

Vehicles communication and the mysterious traffic jams
Have you been stuck in traffic driving a car at the speed of a few meters per hour only to emerge from the traffic jam a while later not certain what caused it in the first place? Traffic experts are likely to attribute the cause to a road construction, a vehicle collision, or any other ...

Connectivity with Dark Fibre and Carrier Ethernet Services

Connectivity with Dark Fibre and Carrier Ethernet Services
Network service providers (a.k.a communication carriers) are offering multiple services suitable for MAN (metropolitan area network) and WAN (wide area network) connectivity. This article introduces two of these services that offer unique benefits to organizations seeking this type of network connectivity. Dark Fibre Service Dark fibre refers to optical fibre cables that have been installed ...

What is SDN?

What is SDN?
Software Defined Networks (SDN) is a new technology with a lot of potential and a healthy dose of hype. The main premise of SDN is moving the intelligence of the network from distributed network nodes to a centralized location to enable programmability and flexibility of configuration through software applications. Each router in today’s communication networks ...

What is Ad Hoc Node?

An ad hoc node refers to a device in a wireless ad hoc network. Ad hoc networks (or more accurately, mobile, multi-hop, wireless networks) are a class of networks that does not depend on any central administration or infrastructure in its operations. Unlike wired networks, an ad hoc network could be working in an environment ...