​OSPF Convergence Time in a Virtual Network

1. Design the Experiment

Any InstaGENI aggregate can be used. UtahDDC InstaGENI is a good choice because it has many resources.

2. Establish the Environment

2.1 Create a GENI account

If you don't already have a GENI account, please get a GENI account. Once you have a GENI account, login as follows: Go to https://portal.geni.net and press the Use GENI button From the Drop Down menu select your institution. If you got an account through the GENI Identity Provider, please select GENI Project Office. Start typing the name of your institution and see the list become smaller. You will be transferred to the Login Page of your institution. Fill in your username and password. Complete the form that appears after you have successfully logged in and press Continue. You will be transferred to an Activation Page. Make sure both checkboxes are checked and then press Activate.

Figure 2-1 Logging into the GENI Experimenter Portal.

Congratulations, you have successfully created a GENI account.

2.2 Join a project

In order to use the portal to reserve resources, you must join a project.

Please join a project.

2.3 Generate and Download SSH Keypair

Access to compute resources in GENI is provided through ssh key pairs and thus the portal needs a public key to upload to compute resources. For the purposes of the tutorial we will have the portal create an SSH key pair for you. (However, if you prefer to use your personal public key you can choose to upload it.)

Once you are logged in, click on the Profile page. On the Profile page in the SSH Keys section, select generate and download an SSH keypair button.

Figure 2-2 On the Profile page, select the "generate and download an SSH keypair" button.

3. Enter the same passphrase twice, then press Generate SSH private key.

Figure 2-3 Enter passphrase twice, then generate SSH private key.

4. Now, press the Download Private Key button
5. If you are using a command line based ssh client, open a terminal and execute:

   $ mv ~/Downloads/id_geni_ssh_rsa ~/.ssh/.
   $ chmod 0600 ~/.ssh/id_geni_ssh_rsa
   $ ssh-add ~/.ssh/id_geni_ssh_rsa
   

   Later in the tutorial, this will allow you to log into your nodes securely without a password.

Figure 2-4 Download an SSH Key Pair.

3. Obtain Resources

Now that you are a member of a project, you can create a slice and reserve resources.

3.1 Create a slice

Go to the Home tab. Press the Create Slice button for this project. As a slice name use the slice name on your worksheet. If you don't have a worksheet, use lab0<your initials>. You can leave the description empty and press Create Slice

Figure 3-1 Create a new slice.

3.2 Reserve Topology

The Portal can reserve pre-defined topologies of GENI resources.

On the Slice tab, press the Add Resources button.

Figure 3-2 Select Add Resources

Select the OSPF 4-node (InstaGENI) RSpec. Select the UtahDDC InstaGENI Aggregate (or Site). Reserve the resources.

Figure 3-3 Select a pre-made RSpec and a location.

3.4 Check Whether Virtual Machines are Ready to be Used

After clicking the Submit button, wait for the canvas to turn green. (This may take awhile.) If the canvas doesn't eventually turn green, press the "Get Status" button (near the "Add Resources" button). The canvas should now look like the picture on the right.

Figure 3-9 Reservation complete. Nodes are ready to login.

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Introduction

Next: Execute