Nabble - ns-users

A new user

2009-12-22T21:22:07Z

Hello... I am a new user. I don't have any idea of NS2. I want to work in WSN. Kindly suggest me two protocols that I can work on in NS2 for congestion and security respectively.

[Ns-developers]DSR protocol changing

2009-12-22T07:46:37Z

Hello everybody.
I am doing simulation by ns2.34 and need some help.
I have to change drs-protocol. In original version
number of forward hops between nodes is unlimited.
I need just two hops (1_node -> 2_node -> 3_node)
Could anybody help me?
thank you in advance
Darya

ErrirModel trace

2009-12-22T04:28:15Z

Hi all,
-Does anyone know if the model error is plotted in the trace file?
The manual says nothing about it.

-How can I see the dropped packets?

Thank very much.

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OLSR SIMULATION

2009-12-21T03:35:50Z

Hello,

I want to simulate OLSR for vanets using different propagation models. Can someone help me on this?

Regards,

Tabassum Waheed

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RNG ( seed )

2009-12-21T01:25:16Z

hi all,could some one please explains to me why we need to use random variables RNG or seedI am confused . I read that some times we need them to generate random variables to use it in sending traffic but i dont how this is happeninghere is the example i have(partial):
. .set base_seed‭ [‬lindex‭ $‬argv 0‭]; . . .global defaultRNG‭$‬defaultRNG seed predef‭ $‬base_seed . . . . .
‭#‬set up BE uplink flowsset be_ul_sink‭ [‬new Agent/LossMonitor‭]‬‭$‬ns‭_ ‬attach-agent‭ $‬W‭ $‬be_ul_sinkfor‭ {‬set j‭ $‬be_init‭} {$‬j‭ < $‬be_end‭} {‬incr j‭} {‬‭ ‬set be_tcp_ul‭_($‬j‭) [‬new Agent/TCP‭]‬‭ $‬ns‭_ ‬attach-agent‭ $‬node‭_($‬j‭) $‬be_tcp_ul‭_($‬j‭)‬‭ $‬ns‭_ ‬connect‭ $‬be_tcp_ul‭_($‬j‭) $‬be_ul_sink
‭ ‬set be_ftp_ul‭_($‬j‭) [‬new Application/FTP‭]‬‭ $‬be_ftp_ul‭_($‬j‭) ‬attach-agent‭ $‬be_tcp_ul‭_($‬j‭)‬‭ ‬‭}‬
‭# ‬random number generatorset gna_be_ul‭ [‬new RNG‭]‬‭$‬gna_be_ul seed predef‭ [‬expr‭ $‬base_seed‭ + ‬5‭]‬
for‭ {‬set j‭ $‬be_init‭} {$‬j‭ < $‬be_end‭} {‬incr j‭} {‬‭ ‬set stime‭ [‬expr 0.1‭ + [$‬gna_be_ul uniform 0‭ ‬1‭]]‬‭ $‬ns‭_ ‬at‭ $‬stime‭ "$‬be_ftp_ul‭_($‬j‭) ‬start‭"‬‭}‬ . .
What is this seed, RNG , uniform ant its parameters. and what is the result from using this.
Regards,Maram

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pls help me

2009-12-20T19:05:31Z

Dear Sir,
I am a new ns-2 user.
How to get bandwidth,mobile speed,hop-count of node from source to
destination using AODV?
How to create fuzzy node in NS-2?
Best Reguards,
MMT
mail-miemiethaw@...
Student from Myanmar.

create network topology programs in NS2

2009-12-20T05:51:32Z

hii,,
i wanna ask about simulation program to create all kind network topology in NS2.
example :
create ring topology

for {set i 0} {$i < 7} {incr i} {
set n($i) [$ns node]
}
for {set i 0} {$i < 7} {incr i} {
$ns duplex-link $n($i) $n([expr ($i+1)%7]) 1Mb 10ms DropTail
}

i can create ring topology and star topology program.
please help me to create mesh,bus and tree topology program...

thanks

Re: create network topology programs in NS2

2009-12-19T21:24:09Z

piNapiNu wrote:

hii,,
i wanna ask about simulation program to create all kind network topology in NS2.
example :
create ring topology

for {set i 0} {$i < 7} {incr i} {
set n($i) [$ns node]
}
for {set i 0} {$i < 7} {incr i} {
$ns duplex-link $n($i) $n([expr ($i+1)%7]) 1Mb 10ms DropTail
}

i can create ring topology and star topology program.
please help me to create mesh,bus and tree topology program...

thanks

model of mobility

2009-12-19T10:05:19Z

please can you send me a source code for differents model of mobility

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Re: create network topology programs in NS2

2009-12-19T06:41:49Z

piNapiNu wrote:

hii,,
i wanna ask about simulation program to create all kind network topology in NS2.
example :
create ring topology

for {set i 0} {$i < 7} {incr i} {
set n($i) [$ns node]
}
for {set i 0} {$i < 7} {incr i} {
$ns duplex-link $n($i) $n([expr ($i+1)%7]) 1Mb 10ms DropTail
}

i can create ring topology and star topology program.
please help me to create mesh,bus and tree topology program...

thanks

Re: create network topology programs in NS2

2009-12-19T06:38:50Z

piNapiNu wrote:

hii,,
i wanna ask about simulation program to create all kind network topology in NS2.
example :
create ring topology

for {set i 0} {$i < 7} {incr i} {
set n($i) [$ns node]
}
for {set i 0} {$i < 7} {incr i} {
$ns duplex-link $n($i) $n([expr ($i+1)%7]) 1Mb 10ms DropTail
}

i can create ring topology and star topology program.
please help me to create mesh,bus and tree topology program...

thanks

create network topology programs in NS2

2009-12-19T05:47:48Z

Urgent ! need active network package in ns by tascnet

2009-12-18T21:12:39Z

Hi Everyone ,

I am working with active network concept in ns-2.
I got the link to get the package for active network for reliable multicast on tascnet.com/PANAMA. I have searched a lot but now it is not found .
also I want to know which ns version is suitable for it.

If anybody knows please please forward it to me.

with warm regards,
aabha

Re: Problems when simulate two Base-Station in the same

2009-12-18T07:43:00Z

Hello
“B” is a wired node; it is not a mobile node, so it has not the role of “routing data”: it hasn’t responsibility neither of direction-finding nor of retransmitting data that are not destined for him.
Good luck

Re: "can't find X library" error in ns-2.26 installation

2009-12-18T06:55:41Z

Thanks...
All package dependences are already installed, consider, for example:

[root@localhost ~]# yum install libX11-devel
Loaded plugins: refresh-packagekit
Setting up Install Process
Parsing package install arguments
Package libX11-devel-1.1.4-1.fc9.i386 already installed and latest version
Nothing to do

Moreover, as a proof, let me tell you that I have been using ns-2.32 and ns-2.34 earlier and they installed successfully.
Best Regards

________________________________
From: false <soumiainii@...>
To: ns users <ns-users@...>; themq15@...
Sent: Fri, December 18, 2009 7:31:03 PM
Subject: Re: "can't find X library" error in ns-2.26 installation

Hello
It s clear that the package libX11 don't exist on your system who is necessary for the installing ns
Please, follow the good steps of "how to install ns on Fedora" on the link:
http://www.linuxquestions.org/questions/linux-software-2/how-can-i-install-ns2-421797/

That are

STEP 1

>From terminal login as super user and do the following.(internet must also be connected in order to install the package dependencies.

yum install autoconf
yum install automake
yum install gcc-c++
yum install libX11-devel
yum install xorg-x11-proto-devel
yum install libXt-devel
And for nam installation (optional):
yum install libXmu-devel

STEP 2

>From terminal go to the folder where the ns-allinone patch is placed and type the following to extract
$ tar -xzf ns-allinone-2.31.tar.gz
$ cd ns-allinone-2.29
$. /install

STEP 3

Now go to /etc folder and type

gedit ~/.bashrc

Add the following lines to the end of it. Remember replace "/your/path" by something like "/home/kazim". And accordingly also change the version numbers. This is for ns 2.31.

# LD_LIBRARY_PATH
OTCL_LIB=/your/path/ns-allinone-2.31/otcl-1.13
NS2_LIB=/your/path/ns-allinone-2.31/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB

# TCL_LIBRARY
TCL_LIB=/your/path/ns-allinone-2.31/tcl8.4.14/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB

# PATH
XGRAPH=/your/path/ns-allinone-2.31/bin:/your/path/ns-allinone-2.31/tcl8.4.14/unix:/your/path/ns-allinone-2.31/tk8.4.14/unix
NS=/your/path/ns-allinone-2.31/ns-2.31/
NAM=/your/path/ns-allinone-2.31/nam-1.13/
PATH=$PATH:$XGRAPH:$NS:$NAM

Let it take effect immediately

source ~/.bashrc

Note: the step described above is important; otherwise, you cannot run ns successfully.
or you can restart your X windows.i.e. logout and then login, or reboot your system, to make it work.)

Now, the installation has been completed. If you try:
$ ns

Then a "%" will appear on the screen.type "exit" to quit the mode and back to "$"

If you miss out step 1 you may get the following errors

Good luck

Re: "can't find X library" error in ns-2.26 installation

2009-12-18T06:31:03Z

Hello
It s clear that the package libX11 don't exist on your system who is necessary for the installing ns
Please, follow the good steps of "how to install ns on Fedora" on the link:
http://www.linuxquestions.org/questions/linux-software-2/how-can-i-install-ns2-421797/

That are

STEP 1

>From terminal login as super user and do the following.(internet must also be connected in order to install the package dependencies.

yum install autoconf
yum install automake
yum install gcc-c++
yum install libX11-devel
yum install xorg-x11-proto-devel
yum install libXt-devel
And for nam installation (optional):
yum install libXmu-devel

STEP 2

>From terminal go to the folder where the ns-allinone patch is placed and type the following to extract
$ tar -xzf ns-allinone-2.31.tar.gz
$ cd ns-allinone-2.29
$. /install

STEP 3

Now go to /etc folder and type

gedit ~/.bashrc

Add the following lines to the end of it. Remember replace "/your/path" by something like "/home/kazim". And accordingly also change the version numbers. This is for ns 2.31.

# LD_LIBRARY_PATH
OTCL_LIB=/your/path/ns-allinone-2.31/otcl-1.13
NS2_LIB=/your/path/ns-allinone-2.31/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB

# TCL_LIBRARY
TCL_LIB=/your/path/ns-allinone-2.31/tcl8.4.14/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB

# PATH
XGRAPH=/your/path/ns-allinone-2.31/bin:/your/path/ns-allinone-2.31/tcl8.4.14/unix:/your/path/ns-allinone-2.31/tk8.4.14/unix
NS=/your/path/ns-allinone-2.31/ns-2.31/
NAM=/your/path/ns-allinone-2.31/nam-1.13/
PATH=$PATH:$XGRAPH:$NS:$NAM

Let it take effect immediately

source ~/.bashrc

Note: the step described above is important; otherwise, you cannot run ns successfully.
or you can restart your X windows.i.e. logout and then login, or reboot your system, to make it work.)

Now, the installation has been completed. If you try:
$ ns

Then a "%" will appear on the screen.type "exit" to quit the mode and back to "$"

If you miss out step 1 you may get the following errors

Good luck

Re: Wiki webpage

2009-12-17T16:39:00Z

On Thu, 17 Dec 2009 23:42:58 +0100, Cesar Cardenas
<cardenas.cesar@...> wrote:
> Hi,
> Is the ns-2 wiki down?
> I tried to go inside but it does not work the link...
> I am looking information for available contribution modules in general...
> Regards,
> César

Yes it is down; I'll send a notice out when it is back up, but in the
meantime, I suggest to get the information you need from the Google cache
by Googling for "ns-2 Contributed Code"

Re: Wiki webpage

2009-12-17T14:42:58Z

Hi,
Is the ns-2 wiki down?
I tried to go inside but it does not work the link...
I am looking information for available contribution modules in general...
Regards,
César

LEACH Cluster Heads not receiving any message

2009-12-17T09:59:15Z

hi all,
I'm using NS2.29 with mannasim patch.
i'm trying to run leach from the mannasim package. Everything seems to
be running fine and the simulation also runs till the end. But the
result says : "Warning! There are no nodes in cluster" for all the
cluster heads. Each cluster heads clusterNodes_ list is empty.
I edited leachapp.cc to broadcast message from a node after cluster
heads have been selected, but all nodes except the ones being cluster
heads receive this message. Even sending a message particularly to
cluster head doesnt work. Also No cluster head receives the JOIN
request sent by other nodes.
It seems cluster heads aren't able to receive. I also noted that the
node, before being selected cluster heads receives messages perfectly.
Plz help. Thanks

"can't find X library" error in ns-2.26 installation

2009-12-17T06:51:21Z

Hello there,
For
some reasons I have to install ns-2.26, although I know that the latest
version is ns-2.34. At './install', I got these errors:
...
tclcl-1.0b13 has been installed successfully.
============================================================
* Build ns-2.26
============================================================
loading cache ./config.cache
...
checking for tcl2c++... ../tclcl-1.0b13
checking for X11 header files
checking for X11 library archive
checking for XOpenDisplay in -lX11... (cached) no
can't find X library
Ns configuration failed! Exiting ...
Please check http://www.isi.edu/nsnam/ns/ns-problems.html
for common problems and bug fixes.

After applying the patch mentioned at http://www.isi.edu/nsnam/ns/ns-problems.html#tclcl-1.0b13, I am facing these errors:
...
tclcl-1.0b13 has been installed successfully.
============================================================
* Build ns-2.26
============================================================
loading cache ./config.cache
No .configure file found in current directory
Continuing with default options...
...
checking for X11 header files
checking for X11 library archive
checking for XOpenDisplay in -lX11... (cached) no
can't find X library
Ns configuration failed! Exiting ...
Please check http://www.isi.edu/nsnam/ns/ns-problems.html
for common problems and bug fixes.

I am using fedora 9, and GCC version is gcc (GCC) 4.3.0 20080428 (Red Hat 4.3.0-8). Please help me.
Best Regards.

Problems when simulate two Base-Station in the same scenario

2009-12-17T06:17:16Z

Hi, everyone!

I am doing a job to simulate a scenario with 2 BS, 2 mobile nodes each
in one BS's domain respectively, and the 2 BS connected with a wired
node. I describe it below: D-----A-B-C-----E, DE are two mobile nodes,
AC are two Base-stations and B is the wired node. I need to build 3 TCP
links: D->A, D->B, D->E.

As in my script, I find D->A, D->B is normal while there is no TCP
connection between D and E through D->A->B->C->E. Could anyone can help
me on this?

Thanks in advance!

================================

My script is below:

# node(0)-----BS(0)-W(0)-BS(1)-----node(1)

# =====================================================================
# Define options
# =====================================================================
set opt(chan) Channel/WirelessChannel
set opt(prop) Propagation/TwoRayGround
set opt(netif) Phy/WirelessPhy
set opt(mac) Mac/802_11
set opt(ant) Antenna/OmniAntenna
set opt(ifq) Queue/DropTail/PriQueue
set opt(ll) LL
set opt(ifqlen) 50
set opt(nn) 4 ;# nodes num
set opt(adhocRouting) AODV

set opt(cp) ""
set opt(sc) ""

set opt(x) 670
set opt(y) 670
set opt(seed) 0.0
set opt(stop) 15.0

set opt(ftp0-start) 2.0 ;# D->A
set opt(ftp1-start) 5.0 ;# D->B
set opt(ftp2-start) 8.0 ;# D->E
set opt(ftp3-start) 2.0 ;# E->B

set num_wired_nodes 1
set num_bs_nodes 2

# ======================================================================
# check boundary para & random seed
if {$opt(x) == 0 || $opt(y) == 0} {
puts "Out!!"
}
if {$opt(seed) > 0} {
puts "new seed: $opt(seed)\n"
ns-random $opt(seed)
}

# Create simulator instance
set ns_ [new Simulator]

# Setup for hier routing
$ns_ node-config -addressType hierarchical
AddrParams set domain_num_ 3
lappend cluster_num 1 1 1
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel 2 2 1
AddrParams set nodes_num_ $eilastlevel

# Setup trace
set tracefd [open scenario_0.tr w]
set namtrace [open scenario_0.nam w]
$ns_ trace-all $tracefd
$ns_ namtrace-all-wireless $namtrace $opt(x) $opt(y)

# Create topo. obj.
set topo [new Topography]

# Define topo.
$topo load_flatgrid $opt(x) $opt(y)

# Create God.
create-god $opt(nn)

set tmp {0.0.0 1.0.0 1.0.1 2.0.0 2.0.1}

# Create wired node.
set W(0) [$ns_ node [lindex $tmp 0]]

# Configure BS node.
$ns_ node-config -adhocRouting $opt(adhocRouting) \
-llType $opt(ll) \
-macType $opt(mac) \
-ifqType $opt(ifq) \
-ifqLen $opt(ifqlen) \
-antType $opt(ant) \
-propType $opt(prop) \
-phyType $opt(netif) \
-channelType $opt(chan) \
-topoInstance $topo \
-wiredRouting ON \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF

# Create BS node.
set BS(0) [$ns_ node [lindex $tmp 1]]
$BS(0) random-motion 0
$BS(0) set X_ 1.0
$BS(0) set Y_ 2.0
$BS(0) set Z_ 0.0

set BS(1) [$ns_ node [lindex $tmp 3]]
$BS(1) random-motion 0
$BS(1) set X_ 650.0
$BS(1) set Y_ 600.0
$BS(1) set Z_ 0.0

# Configure mobilenodes
$ns_ node-config -wiredRouting OFF

# Create mobilenodes
set node(0) [$ns_ node [lindex $tmp 2]]
$node(0) base-station [AddrParams addr2id [$BS(0) node-addr]]

set node(1) [$ns_ node [lindex $tmp 4]]
$node(1) base-station [AddrParams addr2id [$BS(1) node-addr]]

$node(0) set X_ 0.0
$node(0) set Y_ 0.0
$node(0) set Z_ 0.0

$node(1) set X_ 600.0
$node(1) set Y_ 10.0
$node(1) set Z_ 0.0

# Create links
$ns_ duplex-link $BS(0) $W(0) 5Mb 2ms DropTail
$ns_ duplex-link $W(0) $BS(1) 5Mb 2ms DropTail

# Setup TCP connections
set tcp0 [new Agent/TCP] ;# D->A
$tcp0 set class_ 2
set sink0 [new Agent/TCPSink]
$ns_ attach-agent $node(0) $tcp0
$ns_ attach-agent $BS(0) $sink0
$ns_ connect $tcp0 $sink0
set ftp0 [new Application/FTP]
$ftp0 attach-agent $tcp0
$ns_ at opt(ftp0-start) "$ftp0 start"

set tcp1 [new Agent/TCP] ;# D->B
$tcp1 set class_ 2
set sink1 [new Agent/TCPSink]
$ns_ attach-agent $node(0) $tcp1
$ns_ attach-agent $W(0) $sink1
$ns_ connect $tcp1 $sink1
set ftp1 [new Application/FTP]
$ftp1 attach-agent $tcp1
$ns_ at opt(ftp1-start) "$ftp1 start"

set tcp2 [new Agent/TCP] ;# D->E
$tcp2 set class_ 2
set sink2 [new Agent/TCPSink]
$ns_ attach-agent $node(0) $tcp2
$ns_ attach-agent $node(1) $sink2
$ns_ connect $tcp2 $sink2
set ftp2 [new Application/FTP]
$ftp2 attach-agent $tcp2
$ns_ at opt(ftp2-start) "$ftp2 start"

for {set i 0} {$i < 2} {incr i} {
$ns_ initial_node_pos $node($i) 20
}

for {set i 0} {$i < 2} {incr i} {
$ns_ at $opt(stop).00010 "$node($i) reset"
$ns_ at $opt(stop).00010 "$BS($i) reset"
}

$ns_ at $opt(stop).0005 "puts \"NS EXITING...\" ; $ns_ halt"
$ns_ at $opt(stop).0002 "stop"

proc stop {} {
global ns_ tracefd namtrace
$ns_ flush-trace
close $tracefd
close $namtrace
exec nam scenario_0.nam &
#exec xgraph scenario_0.tr -geometry 800x400 &
exit 0
}

puts "Running..."
$ns_ run

=================================

Kindly regards,

Jilong LIAO

Urgent ! help to find active n/w package

2009-12-17T04:51:12Z

Hello ,
I need a active network reliable multicast package
"anRMpkg.tar " which was priviously availabe on PANAMA link
now not found .

Please ,please help me to get it.

I request if anybody have it pl. forward to me

Best regards,
AABHA

creating new objects problems !!

2009-12-17T01:49:09Z

hi, i want to create a new object, i took as template udp agent files and
change/erase some lines to have just the minimum lines to start from there,
but i have a error in compilation , i don't see where the cause can be =(,
i'll appreciate a hand on this. thanks

Error:

apps/mysk.cc: In member function ‘virtual TclObject*
mylistenerClass::create(int, const char* const*)’:
apps/mysk.cc:66: error: cannot allocate an object of abstract type
‘mylistener’
apps/mysk.h:82: note: because the following virtual functions are pure
within ‘mylistener’:
./common/scheduler.h:74: note: virtual void Handler::handle(Event*)
make: *** [apps/mysk.o] Error 1

.cc

static class mylistenerClass : public TclClass {
public:
UdpAgentSkClass() : TclClass("listener") {}
TclObject* create(int, const char*const*) {
return (new mylistener());
}
} class_mylistener;

.h

class mylistener : public TclObject, public Handler {
public:

mylistener();

};

--
Ing Pedro Alonso Chaparro Valero
Ciudad Politecnica de la Innovación
iTEAM - Mobile Communications Group
Polytechnic University of Valencia
C\ Camino de Vera S/N, Edificio 8G
46022 Valencia, Spain

how to simulate two Wireless LAN together operating at different frequnecy in ns2

2009-12-17T01:32:55Z

hello all ,
can anybody tell me ,how to simulate two Wireless LAN together operating at
different frequnecy in ns2?

Preeti Nimonkar
Research Scholor

VoIP over IEEE 802.11 simulation scenarios

2009-12-16T21:50:46Z

________________________________
From: Dinh, Tuan (ICT Centre, Marsfield)
Sent: Thursday, 17 December 2009 11:16 AM
To: 'ns-users@...'
Subject: VoIP over IEEE 802.11 simulation scenarios

Dear ns-users,

What I about to enquire maybe the old concept but I have tried to search around but couldnt find the answer.

The question is how to simulate the VoIP traffic in the WLAN infrastructure mode in term of scenario? ( For example, I want to have 4 mobile nodes (clients) to send VoIP traffic (UDP packets 60 bytes/ 20ms) to the other and all the traffic must be reach the AP first, AP acts like the bridge). ( node 0 is AP, node 1 sends udp packets to node 2 and vice versa, node 3 sends udp packets to node 4 and vice versa - basically there are 2 calls going on)

Initially, I made use the code in ns example folder (~ns-2.34/tcl/ex/802.11/infra.tcl). The routing protocol used is DumbAgent.

Later on, one of my colleague suggested that the nodes will connect direct to the other and not through AP if I use this scenario, and she suggested another scenario that all the sinks [Agent/Null] should be placed at the AP (node_0) and all the traffic send direct to them. It appears to me that scenario worries only the uplink but not downlink.

Please let me know your thoughts

Best regards,

Tuan

floating point exception when embed some other library into NS2

2009-12-16T21:42:00Z

hi everyone,
I tried to embed the shogun library(-lshogun) into NS2,I am sure there is no problem with this library since i tried several example successfully with this library alone.
i just added the library in the Makefile as follow, no additional codes are added into the ns2 project.

LIB= \
-L/home/galaxy/ns-allinone-2.28/tclcl-1.16 -ltclcl -L/home/galaxy/ns-allinone-2.28/otcl-1.9 -lotcl -L/home/galaxy/ns-allinone-2.28/lib -ltk8.4 -L/home/galaxy/ns-allinone-2.28/lib -ltcl8.4 \
-lXext -lX11 \
-lnsl -ldl \
-lm -lshogun

There is no errer when compile and link, but then error occur when run it in the shell: floating point exception.

Could some one offer me some clues about how to fix this problem? thanks in advance!

Re: contributed code page not opening

2009-12-16T20:10:09Z

narayanan ellapparajan wrote:
> hai,
> i am from india. i tried to open the contributed web page but got an error page like HTTP 500 internal server error. is it happening to everybody or just to me. i would like to know the steps to rectify this error.
>

I'll have to report this to an administrator; I don't know how long it
may be out. In the meantime, I suggest that you try to browse google's
cache of the page.

Tom

> thanks in advance
> narayanan.e
>
>
>
> The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/
>

Re: Help: ns error

2009-12-16T13:12:51Z

Hi,

This is because the length of your packets is too big. There is a maximum
value of 127 bytes for PHY payload packets in 802.15.4. So max size for CBR
traffic is 127 minus MAC header which is 7 by default in ns2 if I remember
well.

Hope it'll help

Albane

2009/12/16 Ricardo Sant Ana <ricksant2003@...>

>
> Hello
>
> I vem trying an exponencial traffic between mobile 802_14_5 nodes and I got
> the following message:
>
> [wpan/p802_15_4phy.cc::PD_DATA_request][0.844348](node 1) Invalid PSDU/MPDU
> length: type = exp, src = 1, dst = 3, uid = 1, mac_uid = 4, size = 237
>
> Any help ?
>
> Code following:
>
> # ======================================================================
> # Define options
> # ======================================================================
> set val(chan) Channel/WirelessChannel ;# Channel Type
> set val(prop) Propagation/TwoRayGround ;# radio-propagation
> model
> set val(netif) Phy/WirelessPhy/802_15_4
> set val(mac) Mac/802_15_4 ;# modelo MAC
> set val(ifq) Queue/DropTail/PriQueue ;# interface queue type
> set val(ll) LL ;# link layer type
> set val(ant) Antenna/OmniAntenna ;# modelo de antena
> set val(ifqlen) 50 ;# max packet in ifq
> set val(nn) 4 ;# numero de nos
> set val(rp) AODV ;# protocolo de
> roteamento
> set val(x) 15
> set val(y) 15
>
> set val(nam) wpan.nam
> set val(traffic) ftp ;
>
> set appTime1 0.0 ;# em segundos
> set appTime2 0.8 ;# em segundos
> set appTime3 1.6 ;# em segundos
> set stopTime 100 ;# em segundos
>
> # Variaveis globais da simulacao
> set sim [new Simulator]
> set tracefd [open ./wpan.tr w]
> $sim trace-all $tracefd
>
> set namtrace [open ./$val(nam) w] ;# ponteiro para arquivo para nam
> $sim namtrace-all-wireless $namtrace $val(x) $val(y)
>
>
> $sim puts-nam-traceall {# nam4wpan #} ;# arquivo nam ->
> tratamento especial
> Mac/802_15_4 wpanNam namStatus on ;# default = off
> #Mac/802_15_4 wpanNam ColFlashClr gold ;# default = gold
> #Mac/802_15_4 wpanNam NodeFailClr grey ;# default = grey
>
>
> # For model 'TwoRayGround'
> set dist(5m) 7.69113e-06
> set dist(9m) 2.37381e-06
> set dist(10m) 1.92278e-06
> set dist(11m) 1.58908e-06
> set dist(12m) 1.33527e-06
> set dist(13m) 1.13774e-06
> set dist(14m) 9.81011e-07
> set dist(15m) 8.54570e-07
> set dist(16m) 7.51087e-07
> set dist(20m) 4.80696e-07
> set dist(25m) 3.07645e-07
> set dist(30m) 2.13643e-07
> set dist(35m) 1.56962e-07
> set dist(40m) 1.20174e-07
> # modelos de colisão: carrier sense e receive power
> Phy/WirelessPhy set CSThresh_ $dist(20m) ;# set up carrier sense threshold
> Phy/WirelessPhy set RXThresh_ $dist(20m) ;# set up receive power threshold
>
> # set up topography object
> set topo [new Topography]
> $topo load_flatgrid $val(x) $val(y)
>
> # Create God
> set god_ [create-god $val(nn)]
>
> set chan_1_ [new $val(chan)]
>
> # configure node
>
> $sim 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) \
> -topoInstance $topo \
> -agentTrace OFF \
> -routerTrace OFF \
> -macTrace ON \
> -movementTrace OFF \
> #-energyModel "EnergyModel" \
> #-initialEnergy 1 \
> #-rxPower 0.3 \
> #-txPower 0.3 \
> -channel $chan_1_
>
> for {set i 0} {$i < $val(nn) } {incr i} {
> set no($i) [$sim node]
> $no($i) random-motion 0 ;# desabilitar movimento aleatorio
> dos nos
> }
>
> $no(0) set X_ 0.00
> $no(0) set Y_ 5.00
> $no(0) set Z_ 0.00
> $no(1) set X_ 8.00
> $no(1) set Y_ 5.00
> $no(1) set Z_ 0.00
> $no(2) set X_ 0.00
> $no(2) set Y_ 13.00
> $no(2) set Z_ 0.00
> $no(3) set X_ 8.00
> $no(3) set Y_ 13.00
> $no(3) set Z_ 0.00
>
>
> proc ftptraffic { src dst starttime } {
> global sim no
> set tcp($src) [new Agent/TCP]
> eval \$tcp($src) set packetSize_ 60
> set sink($dst) [new Agent/TCPSink]
> eval $sim attach-agent \$no($src) \$tcp($src)
> eval $sim attach-agent \$no($dst) \$sink($dst)
> eval $sim connect \$tcp($src) \$sink($dst)
> set ftp($src) [new Application/FTP]
> eval \$ftp($src) attach-agent \$tcp($src)
> $sim at $starttime "$ftp($src) start"
> }
>
> proc exptraffic { src dst starttime} {
> global sim no
> set udp($src) [new Agent/UDP]
> #eval \$udp($src) set fid_ 1
> #eval \$udp($src) set class_ 1
> #eval \$udp($src) set packetSize_ 400
> set null($dst) [new Agent/Null]
> eval $sim attach-agent \$no($src) \$udp($src)
> eval $sim attach-agent \$no($dst) \$null($dst)
> eval $sim connect \$udp($src) \$null($dst)
> set exponencial($src) [new Application/Traffic/Exponential]
> eval \$exponencial($src) set packetSize_ 210
> eval \$exponencial($src) set burst_time_ 500ms
> eval \$exponencial($src) set idle_time_ 50ms
> eval \$exponencial($src) set rate_ 100k
> eval \$exponencial($src) attach-agent \$udp($src)
> $sim at $starttime "$exponencial($src) start"
> }
>
> puts "\nTraffic: ftp"
> #Mac/802_15_4 wpanCmd ack4data off
> puts [format "Acknowledgement for data: %s" [Mac/802_15_4 wpanCmd
> ack4data]]
> # Velocidades maxima e minima
> set lowSpeed 0.20ms
> set highSpeed 1.5ms
>
> Mac/802_15_4 wpanNam PlaybackRate $lowSpeed
>
> $sim at [expr $appTime1+0.2] "Mac/802_15_4 wpanNam PlaybackRate $highSpeed"
> $sim at $appTime2 "Mac/802_15_4 wpanNam PlaybackRate $lowSpeed"
> $sim at [expr $appTime2+0.2] "Mac/802_15_4 wpanNam PlaybackRate $highSpeed"
> $sim at $appTime3 "Mac/802_15_4 wpanNam PlaybackRate $lowSpeed"
> $sim at [expr $appTime3+0.2] "Mac/802_15_4 wpanNam PlaybackRate 1ms"
>
> ftptraffic 0 3 $appTime1
> exptraffic 1 3 $appTime2
> ftptraffic 2 3 $appTime3
>
> set pktType exp
> # abaixo como vai aparecer no nam (cores e comandos protocolo)
> Mac/802_15_4 wpanNam FlowClr -p AODV -c tomato
> Mac/802_15_4 wpanNam FlowClr -p ARP -c green
>
> Mac/802_15_4 wpanNam FlowClr -p tcp -s 0 -d 3 -c blue
> Mac/802_15_4 wpanNam FlowClr -p ack -s 3 -d 0 -c blue
>
> Mac/802_15_4 wpanNam FlowClr -p $pktType -s 1 -d 3 -c green4
>
> Mac/802_15_4 wpanNam FlowClr -p tcp -s 2 -d 3 -c cyan4
> Mac/802_15_4 wpanNam FlowClr -p ack -s 3 -d 2 -c cyan4
>
> $sim at $appTime1 "$no(0) NodeClr blue2"
> $sim at $appTime1 "$no(3) NodeClr blue2"
> $sim at $appTime1 "$sim trace-annotate \"(at $appTime1) ftp traffic from
> node 0 to node 3\""
> $sim at $appTime2 "$no(1) NodeClr green4"
> $sim at $appTime2 "$no(3) NodeClr green4"
> $sim at $appTime2 "$sim trace-annotate \"(at $appTime2) exp traffic from
> node 1 to node 3\""
> $sim at $appTime3 "$no(2) NodeClr cyan3"
> $sim at $appTime3 "$no(3) NodeClr cyan3"
> $sim at $appTime3 "$sim trace-annotate \"(at $appTime3) ftp traffic from
> node 2 to node 3\""
>
>
> # defines the node size in nam
> for {set i 0} {$i < $val(nn)} {incr i} {
> $sim initial_node_pos $no($i) 2 ;# 2 eh o tamanho do no
> }
>
> # Tell nodes when the simulation ends
> for {set i 0} {$i < $val(nn) } {incr i} {
> $sim at $stopTime "$no($i) reset";
> }
>
> $sim at $stopTime "stop"
> $sim at $stopTime "puts \"\nNS EXITING...\""
> $sim at $stopTime "$sim halt"
>
> proc stop {} {
> global sim tracefd val env
> $sim flush-trace
> close $tracefd
> exec nam wpan.nam &
> }
>
> puts "\nStarting Simulation..."
> $sim run
>
>
>
> ____________________________________________________________________________________
> Veja quais são os assuntos do momento no Yahoo! +Buscados
> http://br.maisbuscados.yahoo.com
>
>

Help: ns error

2009-12-16T12:38:54Z

Hello

I vem trying an exponencial traffic between mobile 802_14_5 nodes and I got the following message:

[wpan/p802_15_4phy.cc::PD_DATA_request][0.844348](node 1) Invalid PSDU/MPDU length: type = exp, src = 1, dst = 3, uid = 1, mac_uid = 4, size = 237

Any help ?

Code following:

# ======================================================================
# Define options
# ======================================================================
set val(chan) Channel/WirelessChannel ;# Channel Type
set val(prop) Propagation/TwoRayGround ;# radio-propagation model
set val(netif) Phy/WirelessPhy/802_15_4
set val(mac) Mac/802_15_4 ;# modelo MAC
set val(ifq) Queue/DropTail/PriQueue ;# interface queue type
set val(ll) LL ;# link layer type
set val(ant) Antenna/OmniAntenna ;# modelo de antena
set val(ifqlen) 50 ;# max packet in ifq
set val(nn) 4 ;# numero de nos
set val(rp) AODV ;# protocolo de roteamento
set val(x) 15
set val(y) 15

set val(nam) wpan.nam
set val(traffic) ftp ;

set appTime1 0.0 ;# em segundos
set appTime2 0.8 ;# em segundos
set appTime3 1.6 ;# em segundos
set stopTime 100 ;# em segundos

# Variaveis globais da simulacao
set sim [new Simulator]
set tracefd [open ./wpan.tr w]
$sim trace-all $tracefd

set namtrace [open ./$val(nam) w] ;# ponteiro para arquivo para nam
$sim namtrace-all-wireless $namtrace $val(x) $val(y)

$sim puts-nam-traceall {# nam4wpan #} ;# arquivo nam -> tratamento especial
Mac/802_15_4 wpanNam namStatus on ;# default = off
#Mac/802_15_4 wpanNam ColFlashClr gold ;# default = gold
#Mac/802_15_4 wpanNam NodeFailClr grey ;# default = grey

# For model 'TwoRayGround'
set dist(5m) 7.69113e-06
set dist(9m) 2.37381e-06
set dist(10m) 1.92278e-06
set dist(11m) 1.58908e-06
set dist(12m) 1.33527e-06
set dist(13m) 1.13774e-06
set dist(14m) 9.81011e-07
set dist(15m) 8.54570e-07
set dist(16m) 7.51087e-07
set dist(20m) 4.80696e-07
set dist(25m) 3.07645e-07
set dist(30m) 2.13643e-07
set dist(35m) 1.56962e-07
set dist(40m) 1.20174e-07
# modelos de colisão: carrier sense e receive power
Phy/WirelessPhy set CSThresh_ $dist(20m) ;# set up carrier sense threshold
Phy/WirelessPhy set RXThresh_ $dist(20m) ;# set up receive power threshold

# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)

# Create God
set god_ [create-god $val(nn)]

set chan_1_ [new $val(chan)]

# configure node

$sim 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) \
-topoInstance $topo \
-agentTrace OFF \
-routerTrace OFF \
-macTrace ON \
-movementTrace OFF \
#-energyModel "EnergyModel" \
#-initialEnergy 1 \
#-rxPower 0.3 \
#-txPower 0.3 \
-channel $chan_1_

for {set i 0} {$i < $val(nn) } {incr i} {
set no($i) [$sim node]
$no($i) random-motion 0 ;# desabilitar movimento aleatorio dos nos
}

$no(0) set X_ 0.00
$no(0) set Y_ 5.00
$no(0) set Z_ 0.00
$no(1) set X_ 8.00
$no(1) set Y_ 5.00
$no(1) set Z_ 0.00
$no(2) set X_ 0.00
$no(2) set Y_ 13.00
$no(2) set Z_ 0.00
$no(3) set X_ 8.00
$no(3) set Y_ 13.00
$no(3) set Z_ 0.00

proc ftptraffic { src dst starttime } {
global sim no
set tcp($src) [new Agent/TCP]
eval \$tcp($src) set packetSize_ 60
set sink($dst) [new Agent/TCPSink]
eval $sim attach-agent \$no($src) \$tcp($src)
eval $sim attach-agent \$no($dst) \$sink($dst)
eval $sim connect \$tcp($src) \$sink($dst)
set ftp($src) [new Application/FTP]
eval \$ftp($src) attach-agent \$tcp($src)
$sim at $starttime "$ftp($src) start"
}

proc exptraffic { src dst starttime} {
global sim no
set udp($src) [new Agent/UDP]
#eval \$udp($src) set fid_ 1
#eval \$udp($src) set class_ 1
#eval \$udp($src) set packetSize_ 400
set null($dst) [new Agent/Null]
eval $sim attach-agent \$no($src) \$udp($src)
eval $sim attach-agent \$no($dst) \$null($dst)
eval $sim connect \$udp($src) \$null($dst)
set exponencial($src) [new Application/Traffic/Exponential]
eval \$exponencial($src) set packetSize_ 210
eval \$exponencial($src) set burst_time_ 500ms
eval \$exponencial($src) set idle_time_ 50ms
eval \$exponencial($src) set rate_ 100k
eval \$exponencial($src) attach-agent \$udp($src)
$sim at $starttime "$exponencial($src) start"
}

puts "\nTraffic: ftp"
#Mac/802_15_4 wpanCmd ack4data off
puts [format "Acknowledgement for data: %s" [Mac/802_15_4 wpanCmd ack4data]]
# Velocidades maxima e minima
set lowSpeed 0.20ms
set highSpeed 1.5ms

Mac/802_15_4 wpanNam PlaybackRate $lowSpeed

$sim at [expr $appTime1+0.2] "Mac/802_15_4 wpanNam PlaybackRate $highSpeed"
$sim at $appTime2 "Mac/802_15_4 wpanNam PlaybackRate $lowSpeed"
$sim at [expr $appTime2+0.2] "Mac/802_15_4 wpanNam PlaybackRate $highSpeed"
$sim at $appTime3 "Mac/802_15_4 wpanNam PlaybackRate $lowSpeed"
$sim at [expr $appTime3+0.2] "Mac/802_15_4 wpanNam PlaybackRate 1ms"

ftptraffic 0 3 $appTime1
exptraffic 1 3 $appTime2
ftptraffic 2 3 $appTime3

set pktType exp
# abaixo como vai aparecer no nam (cores e comandos protocolo)
Mac/802_15_4 wpanNam FlowClr -p AODV -c tomato
Mac/802_15_4 wpanNam FlowClr -p ARP -c green

Mac/802_15_4 wpanNam FlowClr -p tcp -s 0 -d 3 -c blue
Mac/802_15_4 wpanNam FlowClr -p ack -s 3 -d 0 -c blue

Mac/802_15_4 wpanNam FlowClr -p $pktType -s 1 -d 3 -c green4

Mac/802_15_4 wpanNam FlowClr -p tcp -s 2 -d 3 -c cyan4
Mac/802_15_4 wpanNam FlowClr -p ack -s 3 -d 2 -c cyan4

$sim at $appTime1 "$no(0) NodeClr blue2"
$sim at $appTime1 "$no(3) NodeClr blue2"
$sim at $appTime1 "$sim trace-annotate \"(at $appTime1) ftp traffic from node 0 to node 3\""
$sim at $appTime2 "$no(1) NodeClr green4"
$sim at $appTime2 "$no(3) NodeClr green4"
$sim at $appTime2 "$sim trace-annotate \"(at $appTime2) exp traffic from node 1 to node 3\""
$sim at $appTime3 "$no(2) NodeClr cyan3"
$sim at $appTime3 "$no(3) NodeClr cyan3"
$sim at $appTime3 "$sim trace-annotate \"(at $appTime3) ftp traffic from node 2 to node 3\""

# defines the node size in nam
for {set i 0} {$i < $val(nn)} {incr i} {
$sim initial_node_pos $no($i) 2 ;# 2 eh o tamanho do no
}

# Tell nodes when the simulation ends
for {set i 0} {$i < $val(nn) } {incr i} {
$sim at $stopTime "$no($i) reset";
}

$sim at $stopTime "stop"
$sim at $stopTime "puts \"\nNS EXITING...\""
$sim at $stopTime "$sim halt"

proc stop {} {
global sim tracefd val env
$sim flush-trace
close $tracefd
exec nam wpan.nam &
}

puts "\nStarting Simulation..."
$sim run

____________________________________________________________________________________
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Compile Error, Help Appreciated

2009-12-16T11:17:34Z

Hello,

I am trying to implement a new Agent for NS2, but when I try to run a script I get the following error:

$ ns script1.tcl
num_nodes is set 3
Binding
Constructor
INITIALIZE THE LIST xListHead

(_o17 cmd line 1)
invoked from within
"_o17 cmd tracetarget _o35"
invoked from within
"catch "$self cmd $args" ret"
invoked from within
"if [catch "$self cmd $args" ret]
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error "error when calling class $
(procedure "_o17" line 2)
(SplitObject unknown line 2)
invoked from within
"$ragent tracetarget $T"
(procedure "_o14" line 14)
(Node/MobileNode agenttrace l
invoked from within
"$node agenttrace $tracefd"
(procedure "_o3" line 106)
(Simulator create-wireless-no
invoked from within
"_o3 create-wireless-node"
("eval" body line 1)
invoked from within
"eval $self create-wireless-node
(procedure "_o3" line 23)
(Simulator node line 23)
invoked from within
"$ns_ node"
invoked from within
"set node_(0) [$ns_ node]"
(file "script1.tcl" line 88)

Anybody had a similar problem, what could be the reason? I don't really understand which function is the cause of the problem?

Aurel

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error: overloaded function with no contextual type information in NS2.33

2009-12-16T10:53:00Z

Hi all
I am attaching HWMP routing protocol of Wireless Mesh
Network code in NS2.33 but when I reinstall or make it
then it is giving error
hwmp/hwmp.cc: In member function ‘virtual int HWMP::command(int, const
char* const*)’:
hwmp/hwmp.cc:88: error: overloaded function with no contextual type information
hwmp/hwmp.cc: In member function ‘virtual void HWMP::recv(Packet*, Handler*)’:
hwmp/hwmp.cc:158: warning: comparison between signed and unsigned
integer expressions
make: *** [hwmp/hwmp.o] Error 1
Ns make failed!

Could anyone help to fix it?
Thank you in advance.
--
Thanks & Regards
Ashish Kumar Tiwari
M.Tech CSE NITK SURATHKAL
MANGALORE,KARNATAKA, India

lossmonitor bind variable error

2009-12-16T06:18:33Z

Hi all,
I want to measure the total transmission time from the src to the dst,so
i define the variable "e2e_txtime_sum_" to calculate the time in
loss-monitor.h,and bind it in loss-monitor.cc like this
:bind("e2e_txtime_sum_", &e2e_txtime_sum_); then in loss-monitor.cc
/lossmonitor:recv() i define the variable e2e_txtime_sum_ as
"e2e_txtime_sum_ += ch->e2e_txtime();"where hdr_cmn* ch = HDR_CMN(pkt);
In packet.h i define the variable "e2e_txtime_" to measure the end to end tx
time for a packet in sec as below :
************************
double e2e_txtime_;
inline double& e2e_txtime() {return e2e_txtime_;}
**************************
In ns-default.tcl,i set the default value for e2e_txtime_sum_:
Agent/LossMonitor set e2e_txtime_sum_ 0.0
Last i test whether the variable e2e_txtime_sum works,result is 0.0,which
indicating the variable is of no use,i wonder where the error is?Ang clues?
Thanks in advance!
Jiantao Zhou

test script:
**********
# ======================================================================
# Define options
# ======================================================================
set val(chan) Channel/WirelessChannel
set val(prop) Propagation/TwoRayGround
set val(netif) Phy/WirelessPhy
set val(mac) Mac/802_11
set val(ifq) CMUPriQueue
set val(ll) LL
set val(ant) Antenna/OmniAntenna
set val(x) 2000 ;# X dimension of the topography
set val(y) 2000 ;# Y dimension of the topography
set val(ifqlen) 100 ;# max packet in ifq
set val(adhocRouting) DSR
set val(nn) 3 ;# how many nodes are simulated
set val(cp) "traffic"
set val(sc) "topology"
set stop_ 250.0 ;# simulation time

#Set the time after which the procedure (record) should be called again
set time_ 4.0
# =====================================================================
# Main Program
# ======================================================================
set val(seed) 1.0
set interv 0.01
set cbr_rate [expr 512.0*8.0/$interv]
set macDataRate 1000000.000000
if {$val(seed) > 0} {
puts "Seeding Random number generator with $val(seed) \n"
ns-random $val(seed)
}
# create simulator instance
set ns_ [new Simulator]
set conn_count 2
#Open the output files
#And initialize to zero the variables we'll use to compute averages
for {set i 0} {$i < $conn_count} {incr i} {
set f_($i) [open out_($i).tr w]
set avg_($i) 0.0
}
# setup topography object
set topo [new Topography]
# create trace object for ns and nam
$ns_ use-newtrace
set tracefd [open test.tr w]
set namtrace [open test.nam w]
$ns_ trace-all $tracefd
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
# define topology
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [create-god $val(nn)]
#
# define how node should be created
#
#global node setting
set my_chan [new $val(chan)]
$ns_ node-config -adhocRouting $val(adhocRouting) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-channel $my_chan \
-topoInstance $topo \
-agentTrace ON \
-routerTrace ON \
-macTrace ON
#
# Create the specified number of nodes [$val(nn)] and "attach" them
# to the channel.
Mac/802_11 set dataRate_ $macDataRate
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Define node movement model
#
#puts "Loading connection pattern..."
source $val(cp)
#
# Define traffic model
#
#puts "Loading scenario file..."
source $val(sc)
#Define a procedure which periodically records the bandwidth received by the
#traffic sinks and writes it to trace files for plotting
proc record {} {
global lossMonitor_ f_ conn_count avg_ time_ loss
#Get an instance of the simulator
set ns [Simulator instance]
for {set i 0} {$i < $conn_count } {incr i} {
set bw_($i) [$lossMonitor_($i) set bytes_]
}
#Get the current time
set now [$ns now]
#Calculate the bandwidth (in KBit/s) and write it to the files
for {set i 0} {$i < $conn_count} {incr i} {
set avg_($i) [expr $avg_($i) + $bw_($i)/$time_*8/1000]
puts $f_($i) "$now [expr $bw_($i)/$time_*8/1000]"
}
#Reset the bytes_ values on the traffic sinks
for {set i 0} {$i < $conn_count} {incr i} {
$lossMonitor_($i) set bytes_ 0
}
#Re-schedule the procedure
$ns at [expr $now+$time_] "record"
}
proc finish {} {
global f_ avg_ conn_count stop_ time_ lossMonitor_ interv macDataRate val
node_
#Close the output files
for {set i 0} {$i < $conn_count} {incr i} {
close $f_($i)
}
set aggregate_tput 0.0
set sum_loss 0.0
set sum_npkts 0.0
set sum_rcvd 0.0
set txtime_sum 0.0
for {set i 0} {$i < $conn_count } {incr i} {
set avg_($i) [expr $avg_($i)/$stop_*$time_]
set aggregate_tput [expr $aggregate_tput + $avg_($i)]
set sum_loss [expr $sum_loss + [$lossMonitor_($i) set nlost_] ]
set sum_npkts [expr $sum_npkts + [$lossMonitor_($i) set npkts_] ]
set txtime_sum [expr $txtime_sum + [$lossMonitor_($i) set e2e_txtime_sum_]
]

if {$sum_npkts == 0.0} {
set loss_avg -1.0
set avg_e2e_txtime -1.0
} else {
set loss_avg [expr 1.0 * $sum_loss/$sum_npkts]
set avg_e2e_txtime [expr 1.0 * $txtime_sum/($sum_npkts - $sum_loss)]
}
}

set j 6
set f_interv [format "%.*f" $j [expr (1.0/$interv)*512*8/1000000] ]
set f_macDataRate [format "%.*f" $j [expr $macDataRate/1000000] ]
set f_aggregate_tput [format "%.*f" $j $aggregate_tput]
set f_loss_avg [format "%.*f" $j [expr 100.0 * $loss_avg] ]
#set f_avg_e2e_txtime_msecs [format "%.*f" $j [expr 1000.0 *
$avg_e2e_txtime] ]
puts "$f_interv $f_macDataRate $f_aggregate_tput $f_loss_avg
$f_avg_e2e_txtime_msecs "
exit 0
}

# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 2 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined

$ns_ initial_node_pos $node_($i) 10
}
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $stop_.0 "$node_($i) reset";
}
#$ns_ at $stop_.0002 "puts \"NS EXITING...\""

##$ns_ halt
#puts $tracefd "M 0.0 nn $val(nn) x $val(x) y $val(y) rp $val(adhocRouting)"
#puts $tracefd "M 0.0 sc $val(sc) cp $val(cp) seed $val(seed)"
#puts $tracefd "M 0.0 prop $val(prop) ant $val(ant)"

#Start logging the received bandwidth
$ns_ at 0.0 "record"

$ns_ at $stop_.005 "finish"
#puts "Starting Simulation..."
$ns_ run

**********

create a new ns object?

2009-12-16T04:44:23Z

hi, i wanna load from tcl a function(or something) that open a socket ,
setting up a server that listen over a specific port, from tcl i wanna do
something like :

set mysocket1 [new mySocketObject]
$mysocket1 set-remoteHost localhost
$mysocket1 set-remotePort 8888
$mysocket1 set-timeInterval 1.0
....

into the c++ code i would have the code to set up this socket, and i want
the information about this socket will be available from any part of c++
ns-2 code, i mean, if i use tcp agents i wanna have acces to this socket, if
i use udp agent i wanna have acces to my socket , so HOW CAN I ACHIEVED
THIS GLOBAL ACCESS TO MY SOCKET INFORMATION?

i hope all you understand this issue.

thanks so much in advance

--
Ing Pedro Alonso Chaparro Valero
Ciudad Politecnica de la Innovación
iTEAM - Mobile Communications Group
Polytechnic University of Valencia
C\ Camino de Vera S/N, Edificio 8G
46022 Valencia, Spain

contributed code page not opening

2009-12-16T04:36:44Z

hai,
i am from india. i tried to open the contributed web page but got an error page like HTTP 500 internal server error. is it happening to everybody or just to me. i would like to know the steps to rectify this error.

thanks in advance
narayanan.e

The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/

Re : help whith delay

2009-12-16T03:55:27Z

Hi Aslinda Hassan,
Just to make you the remark
Your data packets are just received from the level " AGT " to the level "RTR" of the same mobile unity (node 3), that’s why the send time == received time, and it makes sense (look at the recv function in gpsr.cc: all packets are processed by this function first and then passed to the function forward ....)
s 0.823902776 _3_ AGT---244 exp 250 [ 0 0 0 0 ]-------[3:0 15:0 32 0]
r 0.823902776 _3_ RTR---244 exp 250 [ 0 0 0 0 ]-------[3:0 15:0 32 0]
Packets are even deleted (removed) by their node generator.
Thus you have to parameterize rather indeed the rate of the traffic (cbr), so that data packets will not be eliminated by the issue of overloading the queue.
I advise you to work with the new format of trace files to see better things. To do it, modify at first the line "newtrace_= 0;" by "newtrace_= 1;" in the cmu-trace.cc file and recompile your code [. / configure; make clean; make]Good luck