[ns] Segmentation fault
Hello i am using ns2 2.30 and 2.29 under fedora 9.. i am using wireless roouting protocols AODV, DSDV, OLSR... i have an error segmentation when using DSR... i have tried to change Linux version by using Mandrake 9.2.. PLZ can you help me to solve this error.. thanks in advance.. -- View this message in context: http://www.nabble.com/Segmentation-fault-tp21263300p21263300.html Sent from the ns-users mailing list archive at Nabble.com.
Re: [ns] TraceGraph Helpppppp!!!
to use the trace graph you have to do some operations: - get the information taht you need from the trace file (*.tr) exemple delay, loss ratio by using either awk langage or Perl langage. and you will put this results by redirection on a file (*.xgr) - you go under ns-allinone/bin and you put this command : ./xgraph *.xgr (you have to look if there is some needed options)... that is the general principle of using xgraph.. NB : i hope that i help you, because i have just began using ns.. good luck new2ns08 wrote: > > Dear all, > > I was trying to use trace graph to plot graph for my simulation. However, > it seems like there is something i have not understood about it. Everytime > i try to plot the graph say for one of my tracefiles and i do trgrpah > on the terminal it does launch the tracegrpah window but it > doesn't plot anything. Now what i have done is create a .ip file but what > i am not sure about is do i need to write my own awk file to make it plot > a graph say for the delay or throughput. > > I am sure you can tell that i am way losttt so please please any help on > tracegraph would be appreciated. I would be more happy if some one can > tell me the basics in plotting a trace graph or the things i need to do or > don't! > > Anticipating for your kind cooperation, I would like to thank you very > much thank you! > > Best regards!! > -- View this message in context: http://www.nabble.com/TraceGraph-Helpp%21%21%21-tp21243252p21263856.html Sent from the ns-users mailing list archive at Nabble.com.
Re: [ns] Segmentation fault
I have resolved the problem Instead of, set opt(ifq)Queue/DropTail/PriQueue; use: set opt(ifq)CMUPriQueue; souhaj wrote: > > Hello i am using ns2 2.30 and 2.29 under fedora 9.. > i am using wireless roouting protocols AODV, DSDV, OLSR... > i have an error segmentation when using DSR... > i have tried to change Linux version by using Mandrake 9.2.. > PLZ can you help me to solve this error.. > thanks in advance.. > > > > -- View this message in context: http://www.nabble.com/Segmentation-fault-tp21263300p21263863.html Sent from the ns-users mailing list archive at Nabble.com.
[ns] Following an alternative path when a link down
Hi, 1 2 3 | | | | 4 5 Above is my topology. 1 is source. 4 is sink. I can send packages from 1 to 4 over 2 ( The Followed Path is 1-2-4 ). But when I down the link between 2-4. All packages dies. When the link between 2-4 goes down, I want all packages to follow the path 1-2-3-5-4. How can I do that? Thanks in advance, Bil
[ns] how to stop a particular node?
Hi all, currently I am working on address allocation in MANET. for that I was implementing an addressing agent MANETconf, which works above routing protocol. As part of simulation scenario I need to simulate departure of node so a node does not participate in packet forwarding. I tried $node_(i) reset but it doesn't work. can any one suggest me how to stop a node(or disable routing agent on a node)?
Re: [ns] how to set different transmit range for different node
Hi Sidney,
After times of trials, I've succeeded in letting different nodes own different
Tx Range by configuring different value of Pt_ for each node. I get different
values of Pt_ from a script:
# The transimssion radio range
Pt_ 6.9872e-4;# ?m
Pt_ 8.5872e-4;# 40m
Pt_ 1.33826e-3 ;# 50m
Pt_ 7.214e-3 ;# 100m
Pt_ 0.2818 ;# 250m
And in my script, I have test range of 250m and 40m. It really works well.
But It's a pity that I don't know how to obtain these values. The tool threshold
(~ns/lidep-utils/propagation/threshold.cc) only generate RXThresh_ other than
Pt_.
Is there somebody knowing how to get value of Pt_?
[Here is my test script]
# ==
# Define options
# ==
set val(ifqlen) 50 ;# max packet in ifq
set val(nn) 2 ;# number of mobilenodes
set val(rp)MFlood ;# routing protocol,DumbAgent
set val(chan) Channel/WirelessChannel
set val(prop) Propagation/TwoRayGround
set val(netif) Phy/WirelessPhy
set val(mac)Mac/802_11
set val(ifq)Queue/DropTail/PriQueue
set val(ll) LL
set val(ant)Antenna/OmniAntenna
set val(stop) 150
# Initialize the SharedMedia interface with parameters to make
# it work like the 914MHz Lucent WaveLAN DSSS radio interface
Phy/WirelessPhy set CPThresh_ 10.0
Phy/WirelessPhy set CSThresh_ 1.559e-11
Phy/WirelessPhy set RXThresh_ 3.652e-10
Phy/WirelessPhy set Rb_ 2*1e6
Phy/WirelessPhy set freq_ 914e+6
Phy/WirelessPhy set L_ 1.0
# Pt_
set txpower_(0) 0.2818 ;# 250m
set txpower_(1) 8.5872e-4;# 40m
set txpower_(2) 7.214e-3 ;# 100m
# ==
# Main Program
# ==
#ns-random 0
# Initialize Global Variables
set ns_ [new Simulator]
set tracefd [open mflood_txRange.tr w]
$ns_ trace-all $tracefd
set namtrace[open mflood_txRange.nam w]
$ns_ namtrace-all-wireless $namtrace 1000 500
# set up topography
set topo [new Topography]
$topo load_flatgrid 1000 500
# Create God
create-god $val(nn)
# Create the specified number of mobilenodes [$val(nn)] and "attach" them
# to the channel.
# configure node
set channel [new Channel/WirelessChannel]
$channel set errorProbability_ 0.0
$ns_ node-config -adhocRouting $val(rp) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-channel $channel \
-topoInstance $topo \
-agentTrace ON \
-routerTrace OFF\
-macTrace OFF \
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
Phy/WirelessPhy set Pt_ $txpower_($i)
set node_($i) [$ns_ node]
$node_($i) random-motion 0;
}
# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
#
# N_0 <-- d ---> N_2
# srcdst
$node_(0) set X_ 0.0
$node_(0) set Y_ 200.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 1.0
$node_(1) set Y_ 200.0
$node_(1) set Z_ 0.0
$ns_ at 1.5 "$node_(1) setdest 255.0 200.0 2.0"
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
$ns_ initial_node_pos $node_($i) 20
}
set udp_(0) [new Agent/UDP]
set udp_(1) [new Agent/UDP]
$ns_ attach-agent $node_(0) $udp_(0)
$ns_ attach-agent $node_(1) $udp_(1)
set null_(0) [new Agent/Null]
set null_(1) [new Agent/Null]
$ns_ attach-agent $node_(1) $null_(0)
$ns_ attach-agent $node_(0) $null_(1)
$ns_ connect $udp_(0) $null_(0)
$ns_ connect $udp_(1) $null_(1)
for {set i 0} {$i < $val(nn)} {incr i} {
set cbr_($i) [new Application/Traffic/CBR]
$cbr_($i) set packetSize_ 512
$cbr_($i) set interval_ 2
$cbr_($i) set random_ 1
$cbr_($i) attach-agent $udp_($i)
}
$ns_ at 1.0 "$cbr_(0) start"
$ns_ at 1.1 "$cbr_(1) start"
# Tell nodes when the simulation ends
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $val(stop).0 "$node_($i) reset";
}
$ns_ at $val(stop).0 "stop"
$ns_ at $val(stop).01 "puts \"NS EXITING...\" ; $ns_ halt"
proc stop {} {
global ns_ tracefd namtrace
$ns_ flush-trace
close $tracefd
close $namtrace
}
puts "Starting Simulation..."
$ns_ run
Regards,
Phenix
From: Sidney Doria
Sent: Saturday, January 03, 2009 12:01 AM
To: Phenix
Subject: Re: [ns] how to set different transmit range for different node
Hi Phenix,
In the TCL file, there's a loop for node creation. So, you can break this node
in a manual creation, each node with specific characteristics.
Sidney Doria
UFCG / BRAZIL
2009/1/2 Phenix
Hi all,
I'd like how to set different transmit range for different node in MANET.
eg.
Three nodes,N0,N1 and N2 are in a line:
(N0) (N1)(N2)
|--- 20
[ns] Ns 2 installation problem
Hello, I am trying to install the NS 2 (version 2.29) in fedora 8. Then i got the following error: /* g++ -c -Wall -DTCP_DELAY_BIND_ALL -DNO_TK -DTCLCL_CLASSINSTVAR -DNDEBUG -DLINUX_TCP_HEADER -DUSE_SHM -DHAVE_LIBTCLCL -DHAVE_TCLCL_H -DHAVE_LIBOTCL1_11 -DHAVE_OTCL_H -DHAVE_LIBTK8_4 -DHAVE_TK_H -DHAVE_LIBTCL8_4 -DHAVE_TCL_H -DHAVE_CONFIG_H -DNS_DIFFUSION -DSMAC_NO_SYNC -DCPP_NAMESPACE=std -DUSE_SINGLE_ADDRESS_SPACE -Drng_test -I. -I/home/ns-allinone-2.29/tclcl-1.17 -I/home/ns-allinone-2.29/otcl-1.11 -I/home/ns-allinone-2.29/include -I/home/ns-allinone-2.29/include -I/usr/include/pcap -I./tcp -I./sctp -I./common -I./link -I./queue -I./adc -I./apps -I./mac -I./mobile -I./trace -I./routing -I./tools -I./classifier -I./mcast -I./diffusion3/lib/main -I./diffusion3/lib -I./diffusion3/lib/nr -I./diffusion3/ns -I./diffusion3/filter_core -I./asim/ -I./qs -I./diffserv -I./satellite -I./wpan -o trace/trace..o trace/trace.cc ../sctp/sctp.h:705: error: extra qualification ‘SctpAgent::’ on member ‘DumpSendBuffer’ make: *** [trace/trace.o] Error 1 Ns make failed! */ Please help me to find out the bug. , Sajeeb Saha 10th Batch,CSEDU +8801914754181 Get your new Email address! Grab the Email name you've always wanted before someone else does! http://mail.promotions.yahoo.com/newdomains/aa/
