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Hi!
I'm trying to simulate some multicast scenarios with ns. I got some errors on those scenarios, so I decide to simulate a simpler one, but I still got an error. This is the code of the script: #--------------------------------------------------------------------------- ----------------- #simple multicast scenario set ns [new Simulator -multicast on] $ns color 1 Blue set f [open ./mos075.tr w] $ns trace-all $f set nf [open ./aleatmos.nam w] $ns namtrace-all $nf proc finish {} { global f nf ns puts stdout "fin" $ns flush-trace close $f close $nf exec nam ./aleatmos.nam & exit 0 } set group [Node allocaddr] set node0 [$ns node] set node1 [$ns node] set node2 [$ns node] set node3 [$ns node] $ns duplex-link $node0 $node1 1.5Mb 10ms DropTail $ns duplex-link $node1 $node2 1.5Mb 10ms DropTail $ns duplex-link $node1 $node3 1.5Mb 10ms DropTail set mproto DM DM set PruneTimeout 0.3 DM set CacheMissMode dvmrp set mrthandle [$ns mrtproto $mproto] set udp [new Agent/UDP] $ns attach-agent $node0 $udp set src [new Application/Traffic/CBR] $src attach-agent $udp $udp set dst_addr_ $group $udp set dst_port_ 0 $udp set class_ 1 set rcvr [new Agent/LossMonitor] $ns attach-agent $node2 $rcvr set rcvrb [new Agent/LossMonitor] $ns attach-agent $node3 $rcvrb $ns at 0.2 "$src start" $ns at 0.3 "$node2 join-group $rcvr $group" $ns at 0.5 "$node3 join-group $rcvr $group" $ns at 0.8 "$node2 leave-group $rcvr $group" $ns at 1.0 "$src stop" $ns at 1.5 "finish" $ns run #--------------------------------------------------------------------------- ------------------------------ and this is the error I get from the simulation: ---------------------------------------------------------------------------- ns: _o132 timeout: no value given for parameter "oif" to "_o108" (DM timeoutPrune line 1) invoked from within "$proto_ timeoutPrune" (procedure "_o132" line 3) (Timer/Iface/Prune timeout line 3) invoked from within "_o132 timeout" ---------------------------------------------------------------------------- -------------------------------------- Can anybody help me with this matter? Thank-you in advance. Manuel P�rez de Castro ([email protected]) ETSI. Telecomunicaciones- UPV Valencia (Espa�a) |