-<!DOCTYPE platform SYSTEM "http://simgrid.gforge.inria.fr/simgrid/simgrid.dtd">
-<platform version="4">
- <AS id="AS0" routing="Full">
+<!DOCTYPE platform SYSTEM "https://simgrid.org/simgrid.dtd">
+
+<!-- All routes of this platform are of length 1, so you can use it with the ns-3 model.
+ https://simgrid.org/doc/latest/ns3.html -->
+
+<platform version="4.1">
+ <zone id="AS0" routing="Full">