set ns [new Simulator] source tb_compat.tcl set a [$ns node] tb-fix-node $a hpc039 tb-set-node-os $a Ubuntu-Agilio-2 set b [$ns node] tb-fix-node $b hpc041 tb-set-node-os $b Ubuntu-Agilio-2 set c [$ns node] tb-fix-node $c hpc042 tb-set-node-os $c Ubuntu-Agilio-2 set o [$ns node] tb-fix-node $o hpc057 tb-set-node-os $o Ubuntu-Agilio-2 $ns rtproto Static $ns run