Version 14 (modified by, 5 years ago) (diff)


Module C: Learning Switch with Extend topology

Image Map

1. Design the Experiment

  1. In today's experiment you will use resources at the aggregate listed on the worksheet. If you don't have a worksheet use Clemson InstaGENI (aka

2. Establish the Environment

3. Obtain Resources

3.1 Load a simple topology in Jacks

For this exercise, we will edit an existing RSpec file. Start by loading this predefined topology into Jacks.

  1. Login to the GENI Portal
  2. Create a new slice with the name of your choice.
  3. Click the Add Resources button on the Slice page.
  4. Select the RSpec labeled IG-learning-switch-extended.
route topology
Figure 1 Load the initial topology.

3.2 Make the topology span two geographic locations

  1. Drag a second site onto the canvas.
  2. Drag one of the switches and the three attached hosts to the second site.
  3. Click on the unlabeled box in the middle of the link. Select "Stitched Ethernet" as the link type.
route topology
Figure 2 Set the Link Type on the inter-aggregate link.
The link type you select will affect the aggregates you are allowed to bind to in the next step.
  • Stitched Ethernet gives you a layer 2 link (i.e. a VLAN) between aggregates.
  • EGRE Tunnel gives you a layer 3 tunnel between aggregates.
  • However, if you would like a Layer 2 link connecting only ExoGENI sites, instead set the Link Type to "(any)" and pick any two ExoGENI aggregates except "ExoGENI ExoSM".
  1. Bind each site to an aggregate. (If you are doing this as part of a tutorial, use the aggregates specified on your worksheet.)
route topology
Figure 3 Bind the sites. The aggregate choices will be limited based on the link type.

3.3. Reserve the Topology using the Portal

  1. Click Reserve Resources.
  2. The reservation may take a couple of minutes to complete. After the reservation completes, return to the slice page.
  3. While you are waiting for the nodes to be ready, click the Geo Map button. Wait for this page to load to see where your nodes are geographically located. Note that it may take a moment for your nodes to be drawn.
route topology
Figure 4 The geographical location of your nodes.
  1. Press the back button on your browser to return to the slice page. Wait for the nodes to be ready.
route topology
Figure 5 The stitched topology is ready and green.

Your resource reservation is complete!


Next: Execute