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  1. Background Information

The GEMINI instrumentation and measurement services must be applied to an existing slice. This tutorial assumes the reader is familiar with the process of creating slices, and we do not describe the steps needed to create a slice in this tutorial. However, in this tutorial we will be using a particular example topology. We also assume the user will access the topology using the user workspace VM designed specifically for this tutorial. The example topology RSPEC and the instructions for accessing the slice using the user workspace are given here a background information.

  1. Getting and using the user workspace
  2. Creating the Tutorial Topology
  1. GEMINI Instrumentation?

After a slice has been created, we are ready to begin installing the GEMINI tools and services into that slice. We call this the "instrumentation" step. This step can take a significant amount of time. Depending on the size of your topology, this can take minutes to hours. To avoid wasting time waiting for the tutorial slice to instrumentize, we have already created a set of example of slices and instrumentized them, so there is no need to instrumentize your slice in this tutorial. However, the process of instrumentizing a slice with the GEMINI tools is given on the GEMINI Instrumentize web page.

  1. Running the Experiment

Before we can use the GEMINI tools to monitor an experiment, we must initiate the experiment. In particular, we will want to generate traffic that can be measured by GEMINI. For the purposes of this tutorial, we implemented a simple GUI that makes it easy to generate traffic in our experimental topology. To access and use the GUI, please follow the instructions given on the Experiment Controller Web Page.

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