= Scaling Up: How to Grow the Topology of an Existing Experiment =
Instructions for the instructor of the [../Procedure Scaling Up] tutorial to reserve the backbone.

 1. Do the same pre-work as the students. [../Procedure/DesignSetup#a2.1Pre-work:Installgeni-lib Prework]
 2. Download `bkbone1.txt` and bkbone2.txt to your local machine.
 3. Run the `scaleup` tool on each to generate `bkbone1.xml` and `bkbone2.xml`:
{{{
geni-lib/tools/scaleup/rspec_gen.py -r bkbone1.txt
geni-lib/tools/scaleup/rspec_gen.py -r bkbone2.txt
}}}
 4. Reserve the `bkbone1.xml` using `stitcher.py` or the [http://portal.geni.net GENI Portal]
 5. When all three nodes in the topology are ready, test connectivity between nodes.
    a. Login to `web1` and ping `10.100.2.2`.
    a. Login to `rt2` and ping `10.100.1.1`.