Hi,
I am having the same error in ns2 version 2.35. Have you succeeded in running this file without this error? If yes, then what should I do to make it work? Thanks!!! Vincent Ngo wrote: > > Hi everyone, > > I am a undergraduate research student at the University of Waterloo, > Ontario > and am a complete beginner to NS2 (and even Linux). I'm working for a > research group and my task is to demonstrate a very basic emulation > example by > next week just to show that it is possible to use ns2 to emulate. I've > been > trying to get any simple emulation script to work for the past few weeks > but > have failed. I'm sure it would take an expert just a few minutes to > write a couple lines of code to do this. Most explainations I have read > to > similar problems are even too advanced for my understanding either in > terms of > NS2 or Linux. If someone could please help me on a student level that > would be > greatly appreciated. > > I am using a Linux machine and so far I have downloaded and installed the > allinone ns-2.29. I have also googled for some simple example emulation > scripts. > > For example, I found this one: > > # Create simulator > set ns [new Simulator] > $ns use-scheduler RealTime > > # Emulator address > set me [exec hostname] > > # Packet input > set bpf0 [new Network/Pcap/Live] > $bpf0 set promisc_ true > set nd0 [$bpf0 open readonly fxp0] > set filt "(not ip host $me)" > $bpf0 filter $filt > > # Packet output > set ipnet [new Network/IP] > $ipnet open writeonly > > # Input agent > set pfa [new Agent/Tap] > $pfa network $bpf0 > > # Output agent > set ipa [new Agent/Tap] > $ipa network $ipnet > > # ICMP ECHO agent > set echoagent [new Agent/PingResponder] > > set n0 [$ns node] > set n1 [$ns node] > set n2 [$ns node] > $ns simplex-link $n0 $n2 100Mb 1000ms DropTail > $ns simplex-link $n2 $n1 100Mb 1000ms DropTail > $ns attach-agent $n0 $pfa > $ns attach-agent $n1 $ipa > $ns attach-agent $n2 $echoagent > $ns simplex-connect $pfa $echoagent > $ns simplex-connect $ipa $echoagent > > # Wait for ping to come in... > $ns run > > > > When I try running this script I get a message that says: > > invalid command name "Network/Pcap/Live" > while executing > "Network/Pcap/Live create o_11 " > invoked from within > "catch "$className create $o $args" msg" > (procedure "new" line 3) > invoked within > "new Network/Pcap/Live" > invoked from within > "set bpf0 [new Network/Pcap/Live]" > (file "./vince/emu1.tcl" line 12) > > > Can anyone help me with this problem please? Since I am not yet an ns2 > expert, I don't know all too well how that code works. I believe it is a > ping > responder. All I need is a very simple emulation example to show that it > works so any other suggestions or example scripts would be great! > > Thanks, > > Vincent Ngo > -- View this message in context: http://old.nabble.com/ns2-emulation---urgent-help-needed-tp5767814p34531630.html Sent from the ns-users mailing list archive at Nabble.com.
