Hi! I increased the 'max_node_num' variable to 200 and ran a simulation with many agents from different nodes sending to another node at the same time from a script. When I run the simulation with less than or equal 64 nodes, all the packages are received. When I run the simulation with more then 64 nodes (say 200), then packages are lost. Related to that, it seems from traces that when sending from an node agent A to another agent B (unicast), what actually happens is first another unknown application sends a package to B, then B replies to A to the application, then the actual unicast occurs. What application is that? When broadcasting, that application does not appear. If needed I can provide my script/agents. Thanks, Aurel __________________________________________________ Do You Yahoo!? Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz gegen Massenmails. http://mail.yahoo.com