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writing speed, powerful/documented config language cons: two languages to learn and debug in Įvent Driven Simulation Event Queue Simulation Finished! TX Pkt Event 1.5sec Node 1 Module Node 2 Module TX Pkt Event 1.5sec RX Pkt Event 1.7sec RX Pkt Event 1.7sec TX Ack Event 1.8sec TX Ack Event 1.8sec RX Ack Event 2.0sec RX Ack Event 2.0sec
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Ns2 network simulator software#
Ns Software Structure: C++ and Otcl Uses two languages C++ for packet-processing fast to run, detailed, complete control OTcl for control simulation setup, configuration, occasional actions fast to write and change pros: trade-off running vs. Ns-2 is a discrete event driven simulation Physical activities are translated to events Events are queued and processed in the order of their scheduled occurrences Time progresses as the events are processed Introduction 1 2 Time: 1.5 sec Time: 1.7 sec Time: 1.8 sec Time: 2.0 secĬomponents of ns ns, the simulator itself nam, the Network Animator visualize ns (or other) output GUI input simple ns scenarios Pre-processing: traffic and topology generators Post-processing: simple trace analysis, often in Awk, Perl, or Tcl Introduction Ns-2 is a discrete event simulator targeted at network research Focused on modeling network protocols wired, wireless, satellite TCP, UDP, multicast, unicast web, telnet, ftp ad hoc routing, sensor networks