Implementing IBM SDN for VE. SDN Test Suite – Methodology. SDN Test Suite – Methodology Typical SDN-based Network Virtualization The architecture rolled out can be one of the following: Pure-overlay: Programmable virtual dataplane elements (vDP) are inserted into edge servers and controlled by the controller cluster.
They form overlay networks using tunnels that are routed over the legacy network fabric. The gateway can be physical or virtual, and participates in the overlay networking. Pure-underlay: SDN-enabled top-of-rack or leaf physical switches are deployed and controlled by the controller cluster. Testing these solutions irrespective of the architectural choice makes it essential to adopt a black-box testing methodology that integrates leverages components from the computing world and the networking world. Classes of Tests. Useful mininet setups. Mininet is a network emulation platform that is very useful to test SDN applications that you build.
It can support different types of topologies. Here we showcase three popular configurations that will be helpful for testing. 1. Single switch Following command spawns a single switch with 3 hosts attached to it. . $ sudo mn --arp --topo single,3 --mac --switch ovsk --controller remote In the above command, there are some important keywords worth paying attention to: –mac: Auto set MAC addresses–arp: Populate static ARP entries of each host in each other–switch: ovsk refers to kernel mode OVS–controller: remote controller can take IP address and port number as options You can now perform ping between hosts h1 and h2 using command h1 ping h2. 2. OpenDaylight Application Developer's tutorial. This tutorial is intended for developers new to SDN application development with OpenDaylight.
We have come a long way from the earlier version of this tutorial to focus on MD-SAL, and Karaf in this tutorial. While OpenDaylight is not simply an OpenFlow controller, OpenFlow continues to be a popular south-bound and we use this in this tutorial to introduce the platform. An introductory presentation is available at slideshare. 1. Setup To get started, download and set up the SDN Hub Tutorial VM in Virtualbox or VMware.
The tutorial application that we will work with is located in /home/ubuntu/SDNHub_OpenDaylight_tutorial directory. Before we start, we recommend you run the following commands to update the tutorial code, which is available at ubuntu@sdnhubvm:~$ cd SDNHub_Opendaylight_Tutorial ubuntu@sdnhubvm:~$ git pull --rebase 2. OpenDayLight uses the following software tools/paradigms. Java interfaces: Java Interfaces are used for event listening, specifications and forming patterns. 3. University of Luxembourg - Daylight Project. One of the great things about open source projects is that they provide a solid, easily available, and generally well documented basis for university research.
This generally gives researchers the ability to concentrate just on the algorithms and instrumentation which they are interested in, without having to completely develop a software suite for the subject area they are studying. In the Interdisciplinary Centre for Security, Reliability and Trust (SnT) at the University of Luxembourg, researchers are using OpenDaylight as basis for addressing specific aspects in the context of the ongoing Cognitive Software Defined Networks (CoSDN) project. CoSDN seeks to combine the efficiency of SDN with cognitive learning algorithms and enhanced protocols to automatise SDN systems. To this aim, the team under the supervision of Prof. Thomas Engel, is adopting OpenDaylight to tackle two directions: Attack Detection (through learning): Having Defense4All as starting point, Dr. Contact details. A Gentle Introduction to Programming Using Python. Introduction to Electrical Engineering and Computer Science I.
Google's Python Class Welcome to Google's Python Class -- this is a free class for people with a little bit of programming experience who want to learn Python.
The class includes written materials, lecture videos, and lots of code exercises to practice Python coding. These materials are used within Google to introduce Python to people who have just a little programming experience. The first exercises work on basic Python concepts like strings and lists, building up to the later exercises which are full programs dealing with text files, processes, and http connections. The class is geared for people who have a little bit of programming experience in some language, enough to know what a "variable" or "if statement" is. Beyond that, you do not need to be an expert programmer to use this material.
This material was created by Nick Parlante working in the engEDU group at Google. Tip: Check out the Python Google Code University Forum to ask and answer questions. What is software-defined networking (SDN)? - Definition from WhatIs.com. Software-defined networking (SDN) is an umbrella term encompassing several kinds of network technology aimed at making the network as agile and flexible as the virtualized server and storage infrastructure of the modern data center.
The goal of SDN is to allow network engineers and administrators to respond quickly to changing business requirements. In a software-defined network, a network administrator can shape traffic from a centralized control console without having to touch individual switches, and can deliver services to wherever they are needed in the network, without regard to what specific devices a server or other hardware components are connected to. The key technologies for SDN implementation are functional separation, network virtualization and automation through programmability. By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers. What is a Software Defined Network.
An Introduction To Software Defined Networking (SDN Tutorial) Introduction to SDN (Software-defined Networking) Software Defined Networking - Princeton University. About the Course This course introduces software defined networking, an emerging paradigm in computer networking that allows a logically centralized software program to control the behavior of an entire network.
Separating a network's control logic from the underlying physical routers and switches that forward traffic allows network operators to write high-level control programs that specify the behavior of an entire network, in contrast to conventional networks, whereby network operators must codify functionality in terms of low-level device configuration. VirtualizeYourNetwork: Network Virtualization & SDDC.