PointToPoint.SetDeviceAttribute('DataRate',StringValue('5Mbps”)) RandomVariable::UseGlobalSeed (1, 1, 2, 3, 5, 8) LogComponentEnable ('UdpEchoClientApplication', Python programs also to import an “ns3” module Ns-3 is built as a library which may be statically or dynamically linked to a C++ main program. C++ used for implementation of simulation and also core model.Ns3 uses C++ and also Python languages for simulating the script.Set tcp2 [$ns create-connection TCP/Reno $node(s2) TCPSink Set tcp1 [$ns create-connection TCP/Reno $node(s1) TCPSink $ns duplex-link-op $node(s4) $node(r2) orient left-up $ns duplex-link-op $node(s3) $node(r2) orient left-down $ns duplex-link-op $node(r2) $node(r1) queuePos 0

$ns duplex-link-op $node(r1) $node(r2) queuePos 0 $ns duplex-link-op $node(r1) $node(r2) orient right $ns duplex-link-op $node(s2) $node(r1) orient right-up $ns duplex-link-op $node(s1) $node(r1) orient right-down $ns duplex-link $node(s4) $node(r2) 15Mb 5ms DropTail $ns duplex-link $node(s3) $node(r2) 15Mb 4.2ms DropTail $ns duplex-link $node(r1) $node(r2) 2.5Mb 22ms RED $ns duplex-link $node(s2) $node(r1) 15Mb 3.2ms DropTail $ns duplex-link $node(s1) $node(r1) 15Mb 2.5ms DropTail In which there are also four different nodes are available and two different routers. Also It use C++ and also OTcl languages.It is also a discrete event simulator that provides substantial support for simulation of TCP, routing, and also multicast protocols over wired and wireless networks.we also have listed different network simulators and sample program code There are different network simulators which also offers different features. List of Network Simulators provides an integrated, versatile, easy-to-use GUI-based network designer tool to design and also simulate a network with SNMP, TL1, TFTP, FTP, Telnet and also Cisco IOS device.

Netsim 10 key