[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [ns] problem with input data
hi
have you checked your trace file that you are trying to run with
xgraph...xgraph gives this message if the file containing the graph
co-ordinates is empty or not in the correct format.
p
> Stephen Okoye wrote:
> >
> > hi all,
> > i am curently trying to simulate a simple lan
> > (ethernet) and i keep getting an error "problems found
> > with input data". does anyone know what this means?
> > can anyone help pls?
> > thanks to all (here is the script)
> >
> > set ns [new Simulator]
> >
> > set go [open out.tr w]
> > $ns trace-all $go
> > set nf [open out.nam w]
> > $ns namtrace-all $nf
> >
> > proc finish {} {
> > global go
> >
> > #$ns flush-trace
> > close $go
> >
> > #exec nam out.nam &
> > #exit 0
> >
> > #call xgraph to display the results
> > exec xgraph out.tr -geometry 800x400 &
> > exit 0
> >
> > }
> > set opt(seed) 0
> > set opt(stop) 5
> > set opt(node) 8
> >
> > set opt(qsize) 100
> > set opt(bw) 10Mb
> > set opt(delay) 1ms
> > set opt(ll) LL
> > set opt(ifq) Queue/DropTail
> > set opt(mac) Mac/802_3
> > set opt(chan) Channel
> > set opt(tcp) TCP/Reno
> > set opt(sink) TCPSink
> >
> > set opt(app) FTP
> >
> > set node0 [$ns node]
> >
> > proc create-topology {} {
> > global ns opt
> > global lan node source node0
> >
> > set num $opt(node)
> > for {set i 0} {$i < $num} {incr i} {
> > set node($i) [$ns node]
> > lappend nodelist $node($i)
> > }
> >
> > set lan [$ns newLan $nodelist $opt(bw) $opt(delay) \
> > -llType $opt(ll) -ifqType $opt(ifq) \
> > -macType $opt(mac) -chanType $opt(chan)]
> >
> >
> > $ns duplex-link $node0 $node(0) 2Mb 2ms DropTail
> >
> > $ns duplex-link-op $node0 $node(0)
> >
>
> > set tcp0 [$ns create-connection TCP/Reno $node0
>
> > TCPSink $node(7) 0]
> > $tcp0 set window_ 15
> >
> > set ftp0 [new Application/FTP]
> > $ftp0 attach-agent $tcp0
> >
> > #set ftp0 [$tcp0 attach-app FTP]
> >
> > $ns at 0.0 "$ftp0 start"
> > $ns at $opt(stop) "stop"
> > }
> >
> > #$ns at 0.0 "record"
> > $ns at 50.0 "finish"
> >
> > $ns run
> >
> > ____________________________________________________________
> > Do You Yahoo!?
> > Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk
> > or your free @yahoo.ie address at http://mail.yahoo.ie
begin:vcard
n:Ratanchandani;Prashant
tel;work:(217)-244-7116
x-mozilla-html:FALSE
org:UIUC;Computer Science
version:2.1
email;internet:[email protected]
adr;quoted-printable:;;2234 DCL=0D=0A1304 W. Springfield Ave.;Urbana;IL;61801;USA
x-mozilla-cpt:;-18496
fn:Prashant Ratanchandani
end:vcard