<?xml version='1.0'?>
<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd">
<platform version="4">
-<!-- router1 -------------link1-2--------------router2
+<!-- router1 - - - - - - link1-2 - - - - - - router2
__________________________ _________________________
| | | |
| backbone1 | | backbone2 |