I. Single Node Software Installation and Custom Images

This experiment is step 1 in the multi-part tutorial on Systematic Experimental Design. The Systematic Experimental Design approach follows this sequence:

Image Map

The goal is to setup a layer-3 virtual network with multiple virtual routers. Hence, the first step is to install the routing software. There are various options, such as `XORP` and `Quagga`. In this tutorial, we will install XORP to enable routing functionalities on nodes.

Sometimes it may take a long time to install software on a node, so it is always good to start with one node to test out the whole installation process. The figure below provides an overview of the software installation to a VM. This process turns a generic VM into a software router.

1. Reserve a VM with a Standard Image

Assume we have a slice created already. We want to reserve a Xen VM running a standard Ubuntu image as the basis of the software router.

a. Select a VM from an InstaGENI Site

Once you have created an image select the Add Resources button to reserve a virtual machine.

In the resulting "Add Resources" panel, drag and drop a Xen VM:

Now click on "Site 1" to select an InstaGENI aggregates, this will show the available sites in the left hand actions:

We will choose the InstaGENI aggregate Kentucky PKS2:

Note Please go to HowToReserveVM for details on how to reserve a VM from an aggregate.

b. Select a Standard Images

Click on the node to show the left-hand options panel that allows image selection. Click on Disk Image pull-down to see available standard images:

Select Ubuntu 12.04 LTS. You are now ready to reserve the VM, which is done by scrolling to the bottom of the Add Resources page and clicking on the Reserve Resources button:

Once selected, the results section will be updated to show the status for the request as it progresses:

c. Login to the VM

Once the VM sliver creation is completed, you can get status in slice page:

The resources are shown as green when ready.

You are able to login to the node from a terminal using ssh.

ssh username@hostname -p xxxxx
Note You can find information on how to login to GENI hosts from HowToLogin.

2. Customize Your VM

In this tutorial we will install XORP 1.8.5 on Ubuntu 12.04 with the following steps:

  • Install Dependencies
     sudo apt-get update
     sudo apt-get install libssl-dev 
     sudo apt-get install ncurses-dev  
     sudo apt-get install libpcap-dev 
     sudo apt-get install g++ traceroute 
     sudo apt-get install scons 
  • Download XORP source files
     tar jvxf xorp-1.8.5-src.tar.bz2
  • Compile and build XORP
     cd xorp
     sudo scons install
  • Verify the XORP installation (Optional)
     scons check

The xorp installation takes ~40 minutes to complete. If you choose to run rhe scons check it will take an additional hour to complete. Once completed you will find the directory xorp under path /usr/local/ directory

Note To install other version of XORP, please check the XORP Official Website for details on the dependencies and installation instructions.

3. Create a Custom Image

From the manual installation procedure to customize the VM, we learned that it is not efficient to manually install XORP on multiple VMs. An alternative approach is to create a custom image of Ubuntu 12.04 LTS with XORP pre-installed and save this custom image for future usage.

You can create InstaGENI custom images in the Slice page by selecting the Snapshot button:

Choose a custom image name that reflects its content and whether the image is visible to other GENI Users. Also note that the image name MUST include alphanumeric characters only.

Click on the Create button and you will get an update on the same page capturing image information :

The custom image is typically available within 10 minutes of the creation time. There is also an email notification for the image creation completion, but the notification email tend to be quarantined to IT mail systems.

Note The custom image with XORP pre-installed is available for use by any InstaGENI aggregate by using the URL above. This will allow you to skip the customization in Step 2 when using this newly defined custom image.

Further details can be found at ManageCustomImageInstaGENI.

If your are going to use the same slice and aggregate in the next step, now it's time to release the Xen VM resource in the Slices panel:

If you are using Omni:

 $ -a <aggregate name> deletesliver <slicename>

4. Verify InstaGENI Custom Image

Now let's load the custom image created in Step 3 by requesting a new VM that uses that image:

  • Select the Slice panel and then click on Add Resources button.
  • Drag and drop a Xen VM node type to the canvas.
  • Select the site Kentucky PKS2 InstaGENI
  • Click on the node and then in the left-hand panel select the Disk Image pull-down and choose Other.
  • In the URN slot paste your image URN, in our example the image URN is ""

  • Scroll down to the bottom of the Add Resources panel and click on the Reserve Resources button.
  • Go back to the Slice panel to moniror polling of the resource, which will take place every 5 seconds until the resource is ready.

Once the VM is ready to login, we can verify the XORP installation.

lnevers@node-0:~$ cd /usr/local/xorp/sbin/
lnevers@node-0:/usr/local/xorp/sbin$ ls  xorp_profiler  xorpsh
call_xrl        xorp_rtrmgr

5. Cleanup the Slice

After verifying the XORP installation, you can release the Xen VM resource in the Slices panel:

If you are using Omni:

 $ -a <aggregate name> deletesliver <slicename>


Step II: Small Topology

Last modified 7 years ago Last modified on 05/26/17 16:15:52

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