hello
i change the following in tcl script ##configure traffic set i 0 set tcp($i) [new Agent/TCP] $tcp($i) set class_ 2 $tcp($i) set packetSize_ 1240 #create video traffic set ftp($i) [new Application/FTP] $ftp($i) set packetSize_ 4960 $ftp($i) set interval_ 0.1 $ftp($i) attach-agent $tcp($i) set sink($i) [new Agent/TCPSink] #sinkNode is transmitter $ns attach-agent $router0 $tcp($i) $ns attach-agent $router1 $sink($i) $ns connect $tcp($i) $sink($i) $ftp($i) attach-agent $tcp($i) $handover add-flow $sink($i) $tcp($i) $iface2 1 $ns at $traffic_start "$ftp($i) start" $ns at $traffic_stop "$ftp($i) stop" $ns at $simulation_stop "finish" but also there is a error which is following At 5.028156 in 3.0.0 ND module received RS from node 3.0.1 At 5.045006 in Mac 2 DestClassifier classifying packet for -1(size=28, type=ARP) At 5.045905 in Mac 3 DestClassifier classifying packet for 2(size=28, type=ARP) At 5.047958 in Mac 2 DestClassifier classifying packet for 3(size=40, type=tcp) --- Classfier::no-slot{} default handler (tcl/lib/ns-lib.tcl) --- _o229: no target for slot 0 _o229 type: Classifier/Port content dump: classifier _o229 0 offset 0 shift 2147483647 mask 2 slots slot 252: _o247 (Agent/MIH) slot 253: _o244 (Agent/MIHUser/IFMNGMT/MIPV6/Handover/Handover2) ---------- Finished standard no-slot{} default handler ---------- please see this error and remove for me....i m wa8ing ur reply regards Mohsin Riaz