Re: [ns] How to add node mobility in 802.15.4 protocol?
Hullo Javed, Check out Marc Greis' Tutorial on the link below: http://www.isi.edu/nsnam/ns/tutorial/ The mobility scenarios are introduced in chapter IX. I hope that'll help. Kind regards, Nicholas Mbonimpa On Wed, Nov 21, 2012 at 5:26 AM, Muhammad Javed javed_u...@yahoo.comwrote: Hi all, Can anyone help me that how i will include node mobility in 802.15.4. i am using ns-2.34 and how i will get throughput of mobile environment? Best regards, Muhammad Javed
Re: [ns] implementation of snoop agent at base station
Hullo mate, When the error on the link is small, you will not notice a difference. Snoop just like any other link layer solution was designed to enhance TCP performance in wireless or random error environments. In a lossless environment, the setup with or without snoop will yield very similar, if not the same results. So, to notice a difference you need to keep varying the packet loss rate on the link where snoop is in charge. Then you do the same for an end to end connection (i.e. without snoop) and compare the results. The example MySnoop.tcl has an uniformly distributed random variable error model that you can integrate into the example Snoopns2.tcl that worked for you. You'll notice that as the variable set loss_prob 10 grows, there'll be a difference in performance when snoop is used, and when snoop is absent. That should get you there. Kind regards, Nicholas Mbonimpa On Fri, Nov 16, 2012 at 6:15 AM, shiny shiny@gmail.com wrote: hi frnd, yes.am struggling to differentiate the performance with and without snoop... On Thu, Nov 15, 2012 at 9:19 AM, nicholas mbonimpa nmboni...@gmail.comwrote: Unfortunately I don't. But, just for the beginning, you can use xgraph to visualise the outputs then have a rough idea on the throughput / bandwidth behaviour. I guess you can now move on from here, and try out a couple of other interesting scenarios. I'm glad I've been of help. Cheers mate. On Thu, Nov 15, 2012 at 8:15 PM, shiny shiny@gmail.com wrote: hi frnd, thanks for ur help.snoopns2.tcl script is running sucessfully. while executing awk script for throughput calculation am getting 0 as output. do u have awk script for throughput calculation Thu, Nov 15, 2012 at 8:49 AM, shiny shiny@gmail.com wrote: thanks a lot for ur help. On Wed, Nov 14, 2012 at 11:12 AM, nicholas mbonimpa nmboni...@gmail.com wrote: Hullo Shiny, I also forgot to mention that how you can tell there's a difference is by running one protocol end to end (for example Reno), and then running the same setup but with snoop at an intermediate node. Then monitor some statistics like throughput at the sink. One of the examples I sent you has an error model for the channel, so you can vary that and see what happens. The examples also have scripts to compute throughput and some other parameters you may want to look at. It's from such comparisons that you can ascertain whether there's a difference or not. I hope this will help. Kind regards, Nicholas Mbonimpa On Wed, Nov 14, 2012 at 4:31 PM, nicholas mbonimpa nmboni...@gmail.com wrote: Hullo Shiny, Apologies for failing to get back to you in time, I've been so caught up. Please find attached two examples running snoop. In example snoopns2.tcl, the slight difference in configuration for snoop is explained in a comment. Please pay attention to the source path at the beginning of the code. I hope that will help. Kind regards, Nicholas Mbonimpa P.S: I've run this code on my side and it works just fine. On Wed, Nov 14, 2012 at 3:25 PM, shiny shiny@gmail.com wrote: hi frndz, i have added LL/LLSnoop to my tcl script for snoop agent deployment at base station.there is no difference with or without LL/LLSnoop. Is there any more code to add snoop agent in tcl script.plz help me frndz... -- With Regards, John Shiny.J -- With Regards, John Shiny.J -- With Regards, John Shiny.J -- With Regards, John Shiny.J
Re: [ns] implementation of snoop agent at base station
Hullo Shiny, Apologies for failing to get back to you in time, I've been so caught up. Please find attached two examples running snoop. In example snoopns2.tcl, the slight difference in configuration for snoop is explained in a comment. Please pay attention to the source path at the beginning of the code. I hope that will help. Kind regards, Nicholas Mbonimpa P.S: I've run this code on my side and it works just fine. On Wed, Nov 14, 2012 at 3:25 PM, shiny shiny@gmail.com wrote: hi frndz, i have added LL/LLSnoop to my tcl script for snoop agent deployment at base station.there is no difference with or without LL/LLSnoop. Is there any more code to add snoop agent in tcl script.plz help me frndz... -- With Regards, John Shiny.J
Re: [ns] implementation of snoop agent at base station
Hullo Shiny, I also forgot to mention that how you can tell there's a difference is by running one protocol end to end (for example Reno), and then running the same setup but with snoop at an intermediate node. Then monitor some statistics like throughput at the sink. One of the examples I sent you has an error model for the channel, so you can vary that and see what happens. The examples also have scripts to compute throughput and some other parameters you may want to look at. It's from such comparisons that you can ascertain whether there's a difference or not. I hope this will help. Kind regards, Nicholas Mbonimpa On Wed, Nov 14, 2012 at 4:31 PM, nicholas mbonimpa nmboni...@gmail.comwrote: Hullo Shiny, Apologies for failing to get back to you in time, I've been so caught up. Please find attached two examples running snoop. In example snoopns2.tcl, the slight difference in configuration for snoop is explained in a comment. Please pay attention to the source path at the beginning of the code. I hope that will help. Kind regards, Nicholas Mbonimpa P.S: I've run this code on my side and it works just fine. On Wed, Nov 14, 2012 at 3:25 PM, shiny shiny@gmail.com wrote: hi frndz, i have added LL/LLSnoop to my tcl script for snoop agent deployment at base station.there is no difference with or without LL/LLSnoop. Is there any more code to add snoop agent in tcl script.plz help me frndz... -- With Regards, John Shiny.J
Re: [ns] Getting error when running a tcl script after adding a new routing protocol
Hullo Shalom,
You've most probably not gone through all the necessary steps of adding a
new protocol.
Most importantly, you need to modify the Makefile.in file in the ns-2.34
(or your version of ns-2) directory and add all the necessary inclusions,
then run make again to create the right executables for your protocol.
I have also attached a pdf (it was sent by someone on this email thread a
while ago) on the steps involved in implementing a new protocol.
I hope that will help.
Kind regards,
Nicholas Mbonimpa
On Tue, Nov 6, 2012 at 4:13 PM, Shalom maximekab...@gmail.com wrote:
Good afternoon Ns-users!
I am trying to implement ETX (Expected Transmission Count) and IBETX
(Interference Bandwidth adjusted ETX) as routing metric into the AODV
routing protocol and DSDV routing protocol respectively in NS-2.34. I
created another identical AODV and DSVD ad hoc routing protocols file and
I
made some changes into AODV and DSDV file in order to incorporate ETX and
IBETX as routing metric respectively. After that i renamed all AODV and
DSDV
files (.cc .h) to AODVETX and DSDVIBETX files (.cc .h). I have changed
all the words where the aodv and dsdv words appear by aodvetx and
dsdvibetx
words (c++ Classes, Packets headers, variables, TCL bindings,..). After run
Make clean and Make it compiles fine. But during execution of tcl file
with new protocol code I am getting following errors. I have carefully
implemented code step by step by thoroughly reading ns material on internet
and ebooks. I shall be highly thankful to you
(_o14 cmd line 1)
invoked from within
_o14 cmd addr
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 $cls: $args $...
(procedure _o14 line 2)
(SplitObject unknown line 2)
invoked from within
_o14 addr
(eval body line 1)
invoked from within
eval $node addr $args
(default arm line 2)
invoked from within
switch -exact $routingAgent_ {
DSDV {
set ragent [$self create-dsdv-agent $node]
}
DSR {
$self at 0.0 $node start-dsr
}
AODV {
set ragent [$self cre...
(procedure _o3 line 14)
(Simulator create-wireless-node line 14)
invoked from within
_o3 create-wireless-node
(eval body line 1)
invoked from within
eval $self create-wireless-node $args
(procedure _o3 line 23)
(Simulator node line 23)
invoked from within
$ns node
(for body line 2)
invoked from within
for {set i 1} {$i = $val(nn) } { incr i } {
set node_($i) [$ns node]
}
--
View this message in context:
http://old.nabble.com/Getting-error-when-running-a-tcl-script-after-adding-a-new-routing-protocol-tp34647085p34647085.html
Sent from the ns-users mailing list archive at Nabble.com.
Re: [ns] how to add LLSnoop at base station
Hullo Shiny, Please check out the link below. http://dev.dma.unipi.it/projects/ns-modules/browser/trunk/ns-2.29/tcl/ex/snoop/MySnoop.tcl It's a simple 3 node configuration example demonstrating how Snoop works. Snoop is configured on the middle node, which interfaces between the other two nodes. The sending node runs Reno, and the third node acts as the sink. I hope this can get you started. Kind regards, Nicholas Mbonimpa On Thu, Nov 1, 2012 at 7:55 PM, shiny shiny@gmail.com wrote: Hi ns users, how to add LLSnoop with base station in tcl script -- With Regards, John Shiny.J
Re: [ns] TCP/IP protocols in satellite networks
Hullo Bipul, Your request is not specific at all, so it's kind of hard to help you. But to get you started, for your TCP/IP simulations, you can use NS2. There's McGreis Tutorial on the link below. http://www.isi.edu/nsnam/ns/tutorial/ It will get you started straight from the basics, with appropriate (and very good) examples, whenever necessary. Check it out and see if it'll be of any help. Kind regards, Nicholas Mbonimpa On Tue, Oct 2, 2012 at 6:47 AM, Bipul Kumar bi...@vpolink.com wrote: Hellow nicholas mbonimpa and Erik i am also looking for help for TCP/IP network simulation on my ubuntu Linux Kindly suggest me some Basic and Fundamental concept for it, Thank you :) You'r Truly Bipul kumar On Thu, Sep 27, 2012 at 11:18 AM, nicholas mbonimpa nmboni...@gmail.comwrote: Hullo Erik, Check out this link and see if it will get you started. http://www.netmode.ntua.gr/~dbelen/SaTPEP/ There's SaTPEP, a connection splitting technique for TCP performance enhancement in satellite networks. It employs an interesting acknowledgement and recovery mechanism, just like any other TCP connection splitting technique. You could do some reading about it before giving it a try. I hope this will be of help. Kind regards, Nicholas Mbonimpa On Thu, Sep 27, 2012 at 5:24 AM, Erik Chavez erikchavez...@gmail.com wrote: Hi Everyone, I am new to ns2 and starting to do research on TCP/IP protocols in satellite networks. I wanted to know if there were any available scripts to run in ns2 for TCP/IP protocols in satellite networks to get a better understanding of the actual simulation working. I really appreciate you help and assistance for my research. Thank you Erik
Re: [ns] TCP/IP protocols in satellite networks
Hullo Erik, Check out this link and see if it will get you started. http://www.netmode.ntua.gr/~dbelen/SaTPEP/ There's SaTPEP, a connection splitting technique for TCP performance enhancement in satellite networks. It employs an interesting acknowledgement and recovery mechanism, just like any other TCP connection splitting technique. You could do some reading about it before giving it a try. I hope this will be of help. Kind regards, Nicholas Mbonimpa On Thu, Sep 27, 2012 at 5:24 AM, Erik Chavez erikchavez...@gmail.comwrote: Hi Everyone, I am new to ns2 and starting to do research on TCP/IP protocols in satellite networks. I wanted to know if there were any available scripts to run in ns2 for TCP/IP protocols in satellite networks to get a better understanding of the actual simulation working. I really appreciate you help and assistance for my research. Thank you Erik
Re: [ns] ERROR when run my fist tcl example
Hi Soares,
Try writing simulator with capital S instead of small s.
Try this tutorial for your first experience. Run the examples in it. They'll
help you get used to the simulator.
http://www.isi.edu/nsnam/ns/tutorial/
Kind regards,
Nicholas Mbonimpa
On Wed, Aug 31, 2011 at 7:46 AM, Bety Barreto Soares betyb...@yahoo.comwrote:
# myfirst_ns.tcl
# create a simulator
set ns [new simulator]
create a trace file
set mytrace [open out.tr w]
$ns trace-all $mytrace
create a NAM trace file
set myNAM [open out.nam w]
$ns namtrace-all $myNAM
define a procedure finish
proc finish {} {
global ns mytrace myNAM
$ns flush-trace
close $mytrace
close $myNAM
exec nam out.nam
exit 0
}
create nodes
set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
set n4 [$ns node]
connect nodes with links
$ns duplex-link $n0 $n2 100Mb 5ms DropTail
$ns duplex-link $n1 $n2 100Mb 5ms DropTail
$ns duplex-link $n2 $n4 54Mb 10ms DropTail
$ns duplex-link $n2 $n3 54Mb 10ms DropTail
$ns duplex-link $n3 $n4 10Mb 15ms DropTail
$ns queue-limit $n2 n3 40
create a UDP agent
set udp [new Agent/UDP]
$ns attach-agent $n0 $udp
set null [new Agent/Null]
$ns attach-agent $n3 $null
$ns connect $udp $null
$udp set fid_1
create a CBR traffic source
set cbr [new Application/Traffic/CBR]
$cbr attach-agent $udp
$cbr set packetSize_1000
$cbr set rate_2Mb
create a TCP agent
set tcp [new Agent/TCP]
$ns attach-agent $n1 $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $n4 $sink
$ns connect $tcp $sink
$tcp set fid_2
create an FTP session
set ftp [new Application/FTP]
$ftp attach-agent $tcp
schedule events
ns at 0.05 $ftp start
ns at 0.1 $cbr start
ns at 60.0 $ftp stop
ns at 60.5 $cbr stop
ns at 61 finish
}
# Start the simulation
$ns run
ON THE CYGWIN I RUN THE FILE
$ ns myfirst_ns.tcl
IT'S ERROR SHOW BELOW
$ myfirst_ns.tcl
invalid command
name simulator
while executing
simulator
create _o3
invoked from
within
catch$className
create $o $args msg
invoked from
within
if [catch
$className create $o $args msg] {
if [string match
_FAILED _SHADOW_OBJECT_$msg] {
delete $o
return
}
global errorInfo
error class
$..
procedure new line 3
invoked from
within
new
simulator
invoked from
within
set ns [new
simulator]
file
myfirst_ns.tcl line3
How to solve this?please help me out..i’m
very new
Re: [ns] Agent creation problem
Hi there, As Fahimeh said, you've most probably not gone through all the necessary steps of adding a new agent. Most importantly, you need to modify the Makefile in the ns-2.34 (or your version of ns-2) directory and include tcp-Fack.o, then run make again to create an executable for your agent. I hope that will help. Kind regards, Nicholas Mbonimpa On Tue, Aug 16, 2011 at 11:20 AM, Fahimeh Akbari fahimeh...@yahoo.comwrote: Hi please explain your steps for defining your new agent and adding it to NS. Thanks From: Loukman NAJDI loukman.na...@utt.fr To: ns-users@ISI.EDU Sent: Tuesday, August 16, 2011 6:57 AM Subject: [ns] Agent creation problem Hello When i have created a new agent in ns2-2.34, the make depend and make options are passed succesfully, after that when itry to run my TCL code an error occur : ns: [code omitted because of length] : invalid command name Agent/TCP/Fack while executing Agent/TCP/Fack set ss-div4_ false any idea ?
Re: [ns] Agent creation problem
Dear Fahimeh, Thanks a lot for the correction. Kind regards, Nicholas Mbonimpa On Tue, Aug 16, 2011 at 6:20 PM, Fahimeh Akbari fahimeh...@yahoo.comwrote: Dear loukman with thanks from Nicholas, I suggest you that modify makefile.in instead of makefile, according to Nicholas help. I attached you a .pdf file that is so usefull in creating a new agent and adding it to in NS. please read the needed changes part of it that explains how to add your new agent to ns. be lucky. your sincerely: Fahimeh -- *From:* nicholas mbonimpa nmboni...@gmail.com *To:* Fahimeh Akbari fahimeh...@yahoo.com *Cc:* Loukman NAJDI loukman.na...@utt.fr; ns-users@ISI.EDU ns-users@isi.edu *Sent:* Tuesday, August 16, 2011 3:51 PM *Subject:* Re: [ns] Agent creation problem Hi there, As Fahimeh said, you've most probably not gone through all the necessary steps of adding a new agent. Most importantly, you need to modify the Makefile in the ns-2.34 (or your version of ns-2) directory and include tcp-Fack.o, then run make again to create an executable for your agent. I hope that will help. Kind regards, Nicholas Mbonimpa On Tue, Aug 16, 2011 at 11:20 AM, Fahimeh Akbari fahimeh...@yahoo.comwrote: Hi please explain your steps for defining your new agent and adding it to NS. Thanks From: Loukman NAJDI loukman.na...@utt.fr To: ns-users@ISI.EDU Sent: Tuesday, August 16, 2011 6:57 AM Subject: [ns] Agent creation problem Hello When i have created a new agent in ns2-2.34, the make depend and make options are passed succesfully, after that when itry to run my TCL code an error occur : ns: [code omitted because of length] : invalid command name Agent/TCP/Fack while executing Agent/TCP/Fack set ss-div4_ false any idea ?
Re: [ns] Segmentation fault
Hi Zeinab, Segmentation faults are usually due errors in the Code you've implemented in the C++ domain. They are mainly caused by wrong pointers, when you try to access some memory location which has been freed. That's just one scenario. There you have to debug the C++ code it on your own, step by step. Sometimes they are also due to wrongly implemented connections (taking into perspective the agents attached to the nodes) in your tcl code. For example, if you attach an forwarding agent to a sink and expect it, without any modifications, to send packets downstream, you'll most probably get a segmentation fault. Check out this link: http://www.ns2ultimate.com/post/567918455/segmentation-fault-a-common-error-in-ns2 Kind regards, Nicholas Mbonimpa On Wed, Aug 10, 2011 at 11:42 AM, Zeinab Rezaiefar z.rezaie...@yahoo.comwrote: hi friend when i run tcl file i get this error Segmentation fault any one know why this error happen? i change aodv protocol and after run tcl that its routing is aodv i get this error. any help will be appreciate. best regard
Re: [ns] warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl syntax error in expression $i $val(nn) : extra tokens at end of expression while executing
Hi Manish,
Do not worry about the warning message. If your setup is ok, the simulation
will run well.
From a look at the code lines you've pasted here, the error message is most
probably due to a missing operator in the line below.
{$i $val(nn) }
This is because both i and val(nn) are variables and there should be an
operator relating them if the for loop is to make sense.
for {set i 0} {$i $val(nn) } {incr i}
That aside, you are most probably running a wireless or wired-cum-wireless
simulation. Depending on how your ns is installed, your simulation may not
run, if you are using the random scene generating files. If that happens,
copy your script to the directory ~/tcl/ex/ and run it there. It will
work.
I hope this will help.
Kind regards,
Nicholas Mbonimpa
On Fri, Aug 5, 2011 at 4:44 PM, nicholas mbonimpa nmboni...@gmail.comwrote:
Hi Manish,
Do not worry about the warning message. If your setup is ok, the simulation
will run well.
From a look at the code lines you've pasted here, the error message is most
probably due to a missing operator in the line below.
{$i $val(nn) }
This is because both i and val(nn) are variables and there should be an
operator relating them if the for loop is to make sense.
for {set i 0} {$i $val(nn) } {incr i}
That aside, you are most probably running a wireless or wired-cum-wireless
simulation. Depending on how your ns is installed, your simulation may not
run, if you are using the random scene generating files. If that happens,
copy your script to the directory ~/tcl/ex/ and run it there. It will
work.
I hope this will help.
Kind regards,
Nicholas Mbonimpa
On Fri, Aug 5, 2011 at 3:17 PM, manishsingh chaudhary
chaudharymanishsin...@gmail.com wrote:
hi
to all,
*sub- the following giving an error statement like as under:-
*
num_nodes is set 8
*warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
syntax error in expression $i $val(nn) : extra tokens at end of
expression*
*while executing*
*for {set i 0} {$i $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0;# disable random motion
}
please sort out above error.**warning: Please use -channel as shown in
tcl/ex/wireless-mitf.tcl
syntax error in expression $i $val(nn) : extra tokens at end of
expression*
*while executing*
*
with regards
manish
*
Re: [ns] CBR traffic
Hi, These two links could help too. http://perform.wpi.edu/NS/ http://perform.wpi.edu/NS/http://perform.wpi.edu/NS/ http://perform.wpi.edu/NS/Kind regards, Nicholas Mbonimpa On Sun, May 22, 2011 at 11:17 PM, nicholas mbonimpa nmboni...@gmail.comwrote: Hi, check in the directory ns-allinone/ns/tcl/lib, that's where the tcl domain files are implemented. Check out the files ns-source.tcl and ns-agent.tcl. Then in the directories ns-allinone/ns/apps and ns-allinone/ns/common you'll find the C domain files for applications and agents. You can also read the ns-manual from chapter 39 Applications and transport agent API and see if it can help. I hope I have been of help. Kind regards, Nicholas Mbonimpa P.S: Check out this link too https://wiki.ti5.tu-harburg.de/wsn/ns2/packet On Sun, May 22, 2011 at 9:40 PM, Aayushi Shashi aayushi_sha...@hotmail.com wrote: Hi! Good morning. Do you know where the cbr traffic agent is implemented ?? and how to modify it to add one field in its header??? Thank you very much!!
Re: [ns] TCP variants in NS
Hi, I hope this answers your question. Check in the directory */home/.../ns-allinone-2.34/ns-2.34/tcp *you'll find all the variations there. Regards Nicholas On Thu, Oct 28, 2010 at 7:51 PM, sajeeb saha sascs...@yahoo.com wrote: Hello everyone, I need to know which of the TCP variants have been implemented in NS. If yo= u know how to find them or where to find them please let me know. I need th= is information badly. Thanks in advance... , Sajeeb Saha 10th Batch,CSEDU +8801914754181
Re: [ns] plz plz help me.......
Hi, copy the wireless examples and try to run them in the directory * .../tcl/ex. * * * You shouldn't have problems then. Kind regards Nicholas On Tue, Oct 26, 2010 at 9:37 PM, yogesh bansal yogesh.uiet...@gmail.comwrote: hi i have downloaded ns2.34-allinone package for linux. i m not being able to run the wireless examples in this. only wired examples are runnning. plz guide me where is the problem?? in my ns2.34 or the installation of linux i req u plz plz help me how can i run wireless examples in linux on network simlator. yogesh.
[ns] Fwd: error running wireless1 from Marc Greis tut
Hi,
copy the file in the directory *~/tcl/ex/ *and run it there.
*
*
It is shown in the warning.
*warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl*
*
*
It should work after that.
It's because the example is using the random scene generating files which
are defined in the tcl directory.
Kind regards
Nicholas Mbonimpa
On Fri, Oct 22, 2010 at 6:46 PM, alin niculescu av3ng3r...@yahoo.comwrote:
Hello all !
I am using ns2-34allinone on Ubuntu 10.04.
I installed/validated it succesfully ,but I get the following error
when doing Marc Greis's tutorial,wireless1 and wireless2.
All scripts until this one worked .
num_nodes is set 3
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
Loading connection pattern...
couldn't read file ../../tcl/mobility/scene/cbr-3-test: no such file or
directory
while executing
source.orig ../../tcl/mobility/scene/cbr-3-test
(uplevel body line 1)
invoked from within
uplevel source.orig [list $fileName]
invoked from within
if [$instance_ is_http_url $fileName] {
set buffer [$instance_ read_url $fileName]
uplevel eval $buffer
} else {
uplevel source.orig [list $fileName]
...
(procedure source line 8)
invoked from within
source $val(cp)
(file wireless1.tcl line 121)
Can anyone please help me ?The solutions I found google-ing didn't work .
Thanks in advance.
