-The only differences with the crossbar cluster above are the ``bb_bw``
-and ``bb_lat`` attributes that specify the backbone characteristics
-(here, a 500 microseconds latency and a 2.25 GByte/sec
-bandwidth). This link is used for every communication within the
-cluster. The route from ``node-0.simgrid.org`` to ``node-1.simgrid.org``
-counts 3 links: the private link of ``node-0.simgrid.org``, the backbone
-and the private link of ``node-1.simgrid.org``.
-
-.. todo::
+The main differences with the crossbar cluster above are the ``bb_bw`` and ``bb_lat`` attributes that specify the backbone
+characteristics (here, a 500 microseconds latency and a 2.25 GBytes/sec bandwidth). This link is used for every
+communication within the cluster. The route from ``node-0.simgrid.org`` to ``node-1.simgrid.org`` counts 3 links: the
+private link of ``node-0.simgrid.org``, the backbone and the private link of ``node-1.simgrid.org``. The route from
+``node-0.simgrid.org`` to the outer internet counts 2 links: the private link of ``node-0.simgrid.org`` and the backbone.