[ns] pls help me
Hi, I am doing my project in adhoc networks. I simulate the networking environment using ns2 simulator. My project is preventing Denial of Service (DoS) attacks using game theory concept along with Watchlist mechanism and Utility Dynamic Source Routing (UDSR). These two mechanisms are based on cooperation and reputation concepts. Cooperation means how close the two nodes are and reputation is like some reward give to node if that node forward the incoming packets to their neighbour without dropping any packets. I need your help regarding this. Please help me by giving source code or other information related to how to proceed. I am eagerly waiting for your reply. Regards Kumari.
Re: [ns] calculating throughput using AWK
Hi,
Below I have write my awk script to calculate throughput.
The columns that you need are:
column 7: TCP bytes sent
column 8: interval
then the throughput is
column7/column8
And, this script also calculates: bytes drops, packets drops, bytes
arrivals als packets arrivals.
I'm sorry, but the names of variables are in Spanish.
/salva
#:
echo [$1:$2:$3] ...Obteniendo bytes/packets/flows sent/dropped TCP
cat $TMP/out.tr | perl column 3 0 2 1 | sort -g |
awk '
BEGIN { max = 0 }
{
# i = fid
# flujo[i,1] = packets_arrivals (+)
# flujo[i,2] = packets_drops(d)
# flujo[i,3] = packets_sent (-)
# flujo[i,4] = bytes_arrivals
# flujo[i,5] = bytes_drops
# flujo[i,6] = bytes_sent
# flujo[i,7] = instante inicio
# flujo[i,8] = instante final
i = $1;
tiempo = $4;
evento = $2;
max = ((i max) ? i : max);
contabilizar = 0;
if (evento == +) {
flujo[i,1]++;
flujo[i,4] += $3;
contabilizar = 1;
} else if (evento == d) {
flujo[i,2]++;
flujo[i,5] += $3;
contabilizar = 1;
} else if (evento == -) {
flujo[i,3]++;
flujo[i,6] += $3;
contabilizar = 1;
}
if (contabilizar == 1) {
tiempo = $4;
if (flujo[i,7] == 0) { flujo[i,7]= tiempo };
if (flujo[i,8] == 0) { flujo[i,8]= tiempo };
if ( tiempo flujo[i,7]) { flujo[i,7] = tiempo};
if ( tiempo flujo[i,8]) { flujo[i,8] = tiempo};
}
}
END {
for (i=0; i=max ; i++) {
lapsus = flujo[i,8] - flujo[i,7];
if ( lapsus 0 ) {
printf(%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f\n,i,flujo[i,1],flujo[i,2],flujo[i,3],flujo[i,4],flujo[i,5],flujo[i,6],lapsus)
}
}
}' $TMP/tcp_flows.dat
#:
#::: FIN
#:
On Mon, 26 Mar 2007, paul yoong wrote:
Hi all,
I want to calculate the throughput of a link using awk. Can anyone tell me
how to do this for a simple 2 node link. If anyone could direct me to any
example on the web that would be great.
Thanks
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Re: [ns] calculating throughput using AWK
could you please tell me how to execute this file, i mean exactly what
command should i type in,
i saved this file as throughput.awk...
then i changed the cat out.tr ( from $TMP/out.tr | perl column 3 0 2 1 |
sort -g | ) to nodes.tr
i tried awk -f throughput.awk outfile
the I tried the command awk -f throughput.awk outfile
i get various errors after executing this. please help me...
rgrds
Iqbal
#:
echo [$1:$2:$3] ...Obteniendo bytes/packets/flows sent/dropped TCP
cat $TMP/nodes.tr | perl column 3 0 2 1 | sort -g |
awk '
BEGIN { max = 0 }
{
# i = fid
# flujo[i,1] = packets_arrivals (+)
# flujo[i,2] = packets_drops(d)
# flujo[i,3] = packets_sent (-)
# flujo[i,4] = bytes_arrivals
# flujo[i,5] = bytes_drops
# flujo[i,6] = bytes_sent
# flujo[i,7] = instante inicio
# flujo[i,8] = instante final
i = $1;
tiempo = $4;
evento = $2;
max = ((i max) ? i : max);
contabilizar = 0;
if (evento == +) {
flujo[i,1]++;
flujo[i,4] += $3;
contabilizar = 1;
} else if (evento == d) {
flujo[i,2]++;
flujo[i,5] += $3;
contabilizar = 1;
} else if (evento == -) {
flujo[i,3]++;
flujo[i,6] += $3;
contabilizar = 1;
}
if (contabilizar == 1) {
tiempo = $4;
if (flujo[i,7] == 0) { flujo[i,7]= tiempo };
if (flujo[i,8] == 0) { flujo[i,8]= tiempo };
if ( tiempo flujo[i,7]) { flujo[i,7] = tiempo};
if ( tiempo flujo[i,8]) { flujo[i,8] = tiempo};
}
}
END {
for (i=0; i=max ; i++) {
lapsus = flujo[i,8] - flujo[i,7];
if ( lapsus 0 ) {
printf(%d\t%d\t%d\t%d\t%d\t%d\t%d\t%f\n,i,flujo[i,1],flujo[i,2],flujo[i,3],flujo[i,4],flujo[i,5],flujo[i,6],lapsus)
}
}
}' $TMP/tcp_flows.dat
#:
#::: FIN
#:
