Hello ns users, I'm trying to create "n" FTP connections from n computers to n computers (in pairs), connected through a node. I want to start a connection at second 0, and then close it after a second and in the same time open another. I don't know why, but the connections won't start. Please help. ....I'm attaching the code here: for {set i 1} {$i <= $clienti_num} {incr i} { set tcp [new Agent/TCP] set sink [new Agent/TCPSink] $ns attach-agent $sfile($i) $tcp $ns attach-agent $peer($i) $sink $ns connect $tcp $sink $tcp set fid_ $i $tcp set window_ 20 $tcp set packetSize_ 100 set ftp($i) [new Application/FTP] $ftp($i) attach-agent $tcp $ftp($i) set type_ FTP } for {set i 1} {$i <= $clienti_num} {incr i} { $ns at $i-1 "$ftp start" $ns at $i "$ftp($i) stop" }
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