$ ns3/ns3 ${srcdir:=.}/examples/platforms/cluster.xml ${srcdir:=.}/examples/msg/ns3/One_cluster-d.xml --cfg=network/model:NS3
> [0.000000] [xbt_cfg/INFO] Configuration change: Set 'network/model' to 'NS3'
> [0.000000] [surf_config/INFO] Switching workstation model to compound since you changed the network and/or cpu model(s)
$ ns3/ns3 ${srcdir:=.}/examples/platforms/cluster.xml ${srcdir:=.}/examples/msg/ns3/One_cluster-d.xml --cfg=network/model:NS3
> [0.000000] [xbt_cfg/INFO] Configuration change: Set 'network/model' to 'NS3'
> [0.000000] [surf_config/INFO] Switching workstation model to compound since you changed the network and/or cpu model(s)