Re: [ns] new class

Hi If you would like to add a new module into NS2, please read http://www.ns2ultimate.com/post/454001969/including-new-modules-into-ns-2 I hope this will help. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com

Re: [ns] what does it means ???

, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 12/12/2010, El hadi Cherkaoui e_cherka...@yahoo.fr wrote: Dear all , Please ca n

Re: [ns] Classifying Packets

Hi Rob, You can use packet classifiers in NS2. Please go through the following slides for the details. http://www.ns2ultimate.com/post/513029699/classifiers-a-multi-target-packet-forwarder Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http

[ns] Has function Tcl::error(...) been changed to be a private function?

, before publishing it online. Any comment would be appreciated. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat

Re: [ns] new block in simplelink structure?

-and-otcl-classes Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear On 8/24/2010, pedro chaparro pdr...@gmail.com wrote: *hi

Re: [ns] Test cwnd size for TCP variants

. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 8/15/2010, Ghassan Akrem ghassanak...@yahoo.com wrote: Hi all,   I

Re: [ns] Error: no-slot{} default handler

, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 8/12/2010, sajad m sajadm1...@yahoo.com wrote: I'm trying to test my new

Re: [ns] how to install ns 2.26

/441093095/ns-2-35-works-on-cygwin I hope this will help. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear On 7/30/2010, mobi

Re: [ns] linkage Otcl/C++

, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 7/8/2010, hend baklouti hend.baklo...@gmail.com wrote: hello, i'm a beginner in ns2

Re: [ns] Fw: Re: Error 127

/ns-2-35-works-on-cygwin I hope this will help. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear On 7/11/2010, ikenna ajere

Re: [ns] monitor-queue activation problem

like to learn how to read OTcl error message, please read http://www.ns2ultimate.com/post/419191200/tcl-error-message-in-ns2 Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t

Re: [ns] target on tcp implementation

Hi Pedro, TcpAgent uses function send(p,h) from within function TCPAgent::output(int seqno, int reason) rather than target_- recv(p,h) Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear

Re: [ns] the recv() in routing protocol process one packet at a time or multiple?

Hi, NS2 is a single-thread program. It processes one thing at the time. This is also true for function recv() which process one packet at a time. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com

Re: [ns] what is this error?

Hi Pedro, Perhaps, you might want to read the following post about no-slot error: http://www.ns2ultimate.com/post/520626807/classifier-no-slot-error Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http

Re: [ns] seeds in ns

Hi Manoj, You might want to read the following blog post. I just put it up today. http://www.ns2ultimate.com/post/550010284/introducing-randomness-into-ns2 Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http

Re: [ns] ns use-newtrace question about new trace format

Hi Jin, Maybe you want to check out this page http://nsnam.isi.edu/nsnam/index.php/NS-2_Trace_Formats Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t

Re: [ns] Installing problem

/441093095/ns-2-35-works-on-cygwin I hope this will help. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear On 4/15/2010, umang

Re: [ns] problem: Classfier::no-slot{} default handler (tcl/lib/ns-lib.tcl)

Hello Meriem, I just put up a no-slot error on the following link. http://www.ns2ultimate.com/post/520626807/classifier-no-slot-error It might solve your problem. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417

Re: [ns] add a new protocol to ns

Hi, If you have a new module you would like to add to NS2, please go to http://www.ns2ultimate.com/post/454001969/including-new-modules-into-ns-2 I hope it will help. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul

Re: [ns] Error while running the tcl script while implementing a new protocol in ns2

://www.ns2ultimate.com/post/419191200/tcl-error-message-in-ns2 Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 4/13/2010

Re: [ns] How to call one function out of 2, using set nd [ns node] ???

HI Learner, Instproc Simulator::node is just a way to create a basic node. If you want a fancy node of your own, you can define another instproc Simulator::my_node. At the Tcl simulation script, you can do something like set mynode [$ns my_node] Best Regards, Teerawat Issariyakul http

Re: [ns] Error installing NS2 (tclcl make failed)

/441093095/ns-2-35-works-on-cygwin I get ns-2.34 working on Ubuntu 8.04. But I'm not sure about ns-2.29. I hope this will help. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat

Re: [ns] how to find the no of packet drops

Hi Krishna, I would use single null agent for the simulation. Then I would go to modify the null agent to count packet every time it receives a packet. At the end of simulation, have it print out all received packets. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http

Re: [ns] wireless tcl script true but the trace file hasn't the same format as for wireless script

Hi Emma, You are using a new trace format. Please refer to http://nsnam.isi.edu/nsnam/index.php/NS-2_Trace_Formats for more information. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear

Re: [ns] ns2 installation problem....

/441093095/ns-2-35-works-on-cygwin I hope this will help. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear On 4/12/2010, Sushma

Re: [ns] Graphs in ns2

Hi Nikitha, I've never use XGraph. I only use Matlab. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 4/10/2010

Re: [ns] segment fault

Hi Stalin, Segmentation fault is usually due to memory access violation. A common example is as follows. int x[10]; x[20] = 0; where you create an array x with 10 slots, but try to access 20th slot of x. Hope this will help. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com

Re: [ns] ns-default.tcl ???

HI Pedro, There is only one role for ns-default.tcl: Setting the initial values for OTcl variables which are bound to C++. There is no other roles for this file. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http

Re: [ns] Fwd: help...

Hi Sushma, These two versions are quite outdated. The latest one is 2.35. I installed in on Cygwin. It also works on Ubuntu as well. Here is the instruction: http://www.ns2ultimate.com/post/441093095/ns-2-35-works-on-cygwin Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http

Re: [ns] Problem when i am using TCL with awk

Hi Umang, I find the following AWK website pretty useful. You might want to check it out. http://www.vectorsite.net/tsawk.html Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t

Re: [ns] Installing ns-2.28, 2.29 under Gentoo or Ubuntu

-and-perhaps What you can do is to use NS-2.35 which fixed the gcc problem. Please find the instruction here: http://www.ns2ultimate.com/post/441093095/ns-2-35-works-on-cygwin Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http

Re: [ns] Problem with using ./configure command in ns2 while recompiling ns2

Hi the learner, From what I can see, the error is due to class Agent/MyAgentOtcl is not define. If you are not familiar with how to read Tcl error message, please read http://www.ns2ultimate.com/post/419191200/tcl-error-message-in-ns2 Best Wishes, Teerawat Issariyakul http

Re: [ns] Fwd: SUB: Reg getting this NS2 code working

Hi Venkata, If you are new to NS2, I suggest you to read the following blog. http://www.ns2ultimate.com/post/434349586/for-ns2-newbies It provides the fundamental steps in learning NS2. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat

Re: [ns] Reg Timer Handler Functions

lecture notes and other resource at the following website: http://www.ece.ubc.ca/~teerawat/NS2.htm Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http

Re: [ns] NS2.33 installation

HI Meriem, I posted the installation of NS-2.35 below: http://www.ns2ultimate.com/post/441093095/ns-2-35-works-on-cygwin You should move to the latest version of NS2. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul

Re: [ns] Is common header a must in a packet and address type defined in config.h

Hi The Learner, It is not a must. The header is just a place where you can store information. It's fine to create your own type. What you have to do is to tell the routing module to extract the address from your address variable. Best Wishes, Teerawat Issariyakul http://www.ns2ultimate.com

Re: [ns] Common header definition inside ns2 directory

Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 3/23/2010, The Learner deeptisabnani.i...@pec.edu.in wrote: Hi. Can there be multiple

Re: [ns] Common header definition inside ns2 directory

Hi, It's in the file ns-2.35/common/packet.h. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 3/22/2010

Re: [ns] EXEC error????

Hi Pietro, Here is my suggestion. If you are sure that tcp_bt.tcl is correct, try to run the following ns tcp_bt.tcl 1 ns tcp_bt.tcl 2 ns tcp_bt.tcl 3 ... Keep changing the last number until it hits 15. Does it create any error? Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com

Re: [ns] Make file

Hi Learner, The default make file is Makefile with no extension. If you would like to add a new protocol. You can find the instruction on the post below: http://www.ns2ultimate.com/post/454001969/including-new-modules-into-ns-2 Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com

Re: [ns] error when calling class $cls: $args

/419191200/tcl-error-message-in-ns2 Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear On 3/19/2010, hitesh sharma hitesh1987.i

[ns] [ns: Adding new NS2 modules] Re: reg : Linking errors

-2 I hope it'll help. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat-Issariyakul/358240861417 http://twitter.com/T_Bear http://www.t-issariyakul.blogspot.com http://www.ece.ubc.ca/~teerawat On 3/15/2010, gayathri devi k.gayathrid

Re: [ns] ns-2.34 installation problem

Hi Tom, Thanks for your comments. I finally got to to work. NS-2.35 really works under cygwin!! I also publish the step-by-step installation at the following URL. http://www.ns2ultimate.com/post/441093095/ns-2-35-works-on-cygwin Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com

Re: [ns] ns-2.34 installation problem

set up a Ubuntu box inside a VMware running on Windows 7. It's a bit of hassle but it works. I will put the instruction up on my blog soon. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com On 3/8/2010, Sidney

[ns] ns-2.34 installation problem AND the working Solution

. Problem: http://www.ns2ultimate.com/post/439346614/working-combination-ns-2-34-ubuntu-8-04-and-perhaps Solution: http://www.ns2ultimate.com/post/425358640/ns2-windows-7-and-cygwin-1-7-what-a-nightmare Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.facebook.com/pages/Teerawat

[ns] For NS2 Newbies (Re: Implementing a new protocol in NS2)

are now. Please visit the blog post: http://www.ns2ultimate.com/post/434349586/for-ns2-newbies I hope it will help. Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com On 3/6/2010, Teerawat Issariyakul teera

Re: [ns] Implementing a new protocol in NS2

notes and other resource at the following website: http://www.ece.ubc.ca/~teerawat/NS2.htm Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com On 3/6/2010, The Learner deeptisabnani.i...@pec.edu.in wrote: Hi all. I

Re: [ns] ns-2.34 installation problem

question: Where do you get Cygwin 1.5.25. Thanks, Best Regards, Teerawat Issariyakul http://www.ns2ultimate.com/ http://www.ece.ubc.ca/~teerawat http://www.t-issariyakul.blogspot.com On 3/5/2010, Lupe Krops lupe...@yahoo.com wrote: Hi to everyone, I'm trying to install ns-allinone-2.34 on win xp. I

Re: [ns] [Suggestion for your question]: help!!! Adding new protocol in NS2

, Teerawat Issariyakul http://www.ece.ubc.ca/~teerawat http://t-issariyakul.blogspot.com http://ns2ultimate.tumblr.com/ (Beta) Hello NS Users, I installed ns2.34 allinone in ubuntu 9.10. And first time, I am trying to add a new protocol in NS2. I followed the steps at: http://masimum.inf.um.es

Re: [ns] randomizing runs

Hi Abu, By default, NS2 is deterministic. If you would like to run NS2 in randomized scenarios, you need to execute $defaultRNG seed n prior to $ns run, where n is an integer. If n is zero, NS2 will use the current time and counter as a seed for random number generator. By default, n is set

Re: [ns] Please Help

Hi, You may run make again from NS2 directory. It will create ns.exe. Best Regards, Teerawat On 9/22/2009, Sula K ksul...@yahoo.com wrote: Daer my brothers, in ns 2  I did rm ns.exe instead rm nam.exe , after that when  iexcuted the following problem come out on the screen?

Re: [ns] how to modify tcp

Dear Vaishali, NS2 has two versions of SACK: Agent/TCP/Sack1 and Agent/TCP/SackRH. Check out the details in files ~ns/tcp/tcp-sack1.* and tcp-sack-rh.* BR Teerawat On 6/4/2009, vaishali mandhare v_mandh...@yahoo.com wrote: hello all, I want to increase performance of tcp in maodv but I

Re: [ns] TCP agent and sink

will go regardless of transmission from other end..?? On Wed, May 27, 2009 at 9:56 PM, Teerawat Issariyakul teera...@ece.ubc.cawrote: Dear Vishal, Only one sink is necessary. But you do need to connect both tcp agent to the same sink by using $ns connect $tcp1 $sink and $ns connect $tcp2 $sink

Re: [ns] TCP agent and sink

Dear Vishal, Only one sink is necessary. But you do need to connect both tcp agent to the same sink by using $ns connect $tcp1 $sink and $ns connect $tcp2 $sink. The result would be the same as when you have two sinks. Best, Teerawat On 5/27/2009, Vishal Agarwal vis...@gmail.com wrote:

Re: [ns] A problem about the length of a queue

Well, what you can do is to write a function, say lengthb()) in class PacketQueue (there is a variable pq_ of class Queue). In this function, determine the number of bytes of each packet from head_ to tail_ of a PacketQueue object and returns the total number of bytes. I posted how to determine

Re: [ns] Help on ns2 internal organization

Hi Qweq, I agree with you when you change C++ code you WILL NEED to recompile it. But, Udit, if you want to change topology, you will not need to modify C++ code. You can do it in Tcl. Defining your own topology in Tcl does not require recompilation. In fact, there is no Tcl compiler. Tcl is

Re: [ns] to pass message class application to agent

Dear Gisane, NS2 defines applications in class Application (see ~ns/apps/app.h,cc). The derive classes of application are for example TrafficGenerator (e.g., CBR) or FTP. The application models user demand. Therefore it need to send message to an agent saying that a use needs to send data. Here

Re: [ns] ns problem1

You need to install XServer. Go to website of Cygwin or google to find out how. Best, Teerawat On 3/15/2009, ali bala mrbala...@yahoo.com wrote: hi i had problem with nam (i worke with ns-2 under cygwin) i did this steps for troubleshooting untill now :   while running simple example

Re: [ns] How to Drop Packets From a Particular Sender

and the logs would not be consistent. I would recommend using the latter method drop(p) instead. This makes the logging consistent and almost all objects I've come across where I would like to drop packets have been Connector objects. Best regards, Mats Folke Teerawat Issariyakul wrote: Hi

Re: [ns] Classifier no slot.

On 3/12/2009, Mayank Daga dagamay...@gmail.com wrote: Hi, Basically, you are accessing the slot -1 which does not exist. I posted the details at http://t-issariyakul.blogspot.com/2009/03/no-slot-error-for-classifiers.html For more information about Classifiers, see Chapter 6 in the following

Re: [ns] ns problem

Hi, Basically, you are accessing the slot -1 which does not exist. I posted the details at http://t-issariyakul.blogspot.com/2009/03/no-slot-error-for-classifiers.html For more information about Classifiers, see Chapter 6 in the following book from Springer: T. Issaraiyakul and E. Hossain,

Re: [ns] ARQ implementation for terrestrial links

Dear Ioanis, There is an example implementation of ARQ in the following book from Springer useful. T. Issariyakul and E. Hossain , Introduction to Network Simulator NS2, Springer, Oct. 2008, ISBN: 978-0-387-71759-3

Re: [ns] Packet Arrival rate -- Need Help*

Dear LiViAn, What do you mean by packet arrival rate? Arrive at the queue, or from the source? Does it need to pertain to a certain TCP flow? Best, Teerawat On 11/12/2008, LiViAn ZaH [EMAIL PROTECTED] wrote: if (typeof YAHOO == undefined) { var YAHOO = {}; } YAHOO.Shortcuts =

Re: [ns] Packet Arrival rate -- Need Help*

Dear LiViAn, What do you mean by packet arrival rate? Arrive at the queue, or from the source? Does it need to pertain to a certain TCP flow? Best, Teerawat On 11/12/2008, LiViAn ZaH [EMAIL PROTECTED] wrote: if (typeof YAHOO == undefined) { var YAHOO = {}; } YAHOO.Shortcuts =

Re: [ns] How to send a packet to previous node

Dear Howard, The easiest way to transmit from one NsObject (e.g. Nodes) to another is through a (C++ and Tcl) Connector object. A connector has two pointers to NsObjects: target_ and drop_. In the OTcl domain, it uses an OTcl commands target and drop (followed by the name of the NsObject) to

Re: [ns] How to send a packet to previous node

. Howard 2008/11/11 Teerawat Issariyakul [EMAIL PROTECTED] Dear Howard, The easiest way to transmit from one NsObject (e.g. Nodes) to another is through a (C++ and Tcl) Connector object. A connector has two pointers to NsObjects: target_ and drop_. In the OTcl domain, it uses an OTcl commands

Re: [ns] how to implement extension to NS2

You may look at the following book from Springer. T. Issaraiyakul and E. Hossain, Introduction to Network Simulator NS2, Springer 2008. Here is the link: http://www.springer.com/engineering/signals/book/978-0-387-71759-3 You might also find the following slide useful:

Re: [ns] where is the packet header offset set when a new packet is generated?

Packet construction is fairly subtle. In fact it consist of three phases: 1) At the compilation (when you type make): In this phase, NS2 allocate the memory for all TclClasses. PacketHeaderClass defined in file ~ns/common/packet.h,cc is one of them. In the constructor of this class, the

Re: [ns] How to measure rate of the traffic

Hi, What UDP does is to create packets based on the application. Under your scenario, Pareto tells UDP when to create a packet, and UDP will create the packet accordingly. Therefore the rate of UDP is equal to the rate at which the Pareto traffic is generated. Best, Teerawat On 10/29/2008, J

Re: [ns] Generating packets on queue events

Hi, In NS2, generating a new packet is not that complicated. Class Packet has a function alloc() which returns a pointer to the created packet. You may find the detail in file ~/ns/common/packet.h. At the receiving end, you may process the packet in the function recv(p,h), where p is a pointer

Re: [ns] are there any TCP traffic models or generators on ns2?

Hi, TCP itself cannot generated traffic. It receives a demand for data transmission from a user. For example, you may use FTP and indicate that a user has infinite demand to transfer data. TCP then takes that demand and keep transmitting packets (practically forever). If you want to create

Re: [ns] ns-2 simulation verification

Well, Most of the time, you will have to see if the results make senses. But for a good research, you will need analytical results as a comparison. Regards, Teerawat On 10/27/2008, Ghada Khoriba [EMAIL PROTECTED] wrote: Dear all, How can I verify that the simulation results is right? Is

Re: [ns] What is Packet Interval !!

Hi, If you are talking about the time that you need to transmit packet, it is actually defined by two things 1) packet size and 2) link characteristics. There is a detailed explanation of the packets and the scheduling (and timers) in the book from Springer: T. Issaraiyakul and E. Hossain,

Re: [ns] Problems with FEC, Poisson and Errmodel

Hi, I guess you may look at chapters 11-12 the following book from Springer: T. Issaraiyakul and E. Hossain, Introduction to Network Simulator NS2, Springer 2008. Here is the link: http://www.springer.com/engineering/signals/book/978-0-387-71759-3 You might also find the following slide

Re: [ns] How to access mac layer in c++ of ns2

Hi Basim, The connection from a node to a TCP agent is fairly subtle. Basically, a Node has an instvar dmux_ which is a classifier. It install a TcpAgent and TcpSink in the slot of the classifier dmux_. This occurs when you invoke commands like $ns attach-agent $n0 $udp0 You may find the

Re: [ns] Gettig error in simulation (ABORTING...)

Hi Sayed, There must be something wrong in your program. NS2 has a bunch of integrity checks. If there is something wrong (e.g., deallocating a packet that does not exit), it will abort the program by invoking function abort(). BR, Teerawat On 1/27/2008, Seyed Amin Hosseini Seno [EMAIL

Re: [ns] target_ -recv ()

Well, It is if you just implement the codes like that. In most cases, however, you will not instantiate an object from class Connector. You will implement a class derived from class Connector. In the derived class, you will also have to override function recv. For example, you can invoke

Re: [ns] access to TCL instance variables

Nabila, To print the value, you may do something like puts [$myagent set myvar_] Cheers, Teerawat On 11/6/2007, Nabila khedimi [EMAIL PROTECTED] wrote: This is what I did, we can set a value to the variable like you did but how to get its value, for printing for example To: [EMAIL

Re: [ns] How to recompile and run tcl files?

Say you want to include myfile.cc into NS2 code, you have to incorporate myfile.o in file Makefile Open Makefile and look how an object file (myfile.o) can be incorporate into the Makefile. Finally, run make at ns2 directory, and you're done!! Best, Teerawat On 9/13/2007, Kavuluri,

Re: [ns] printing the ackno

Hi, A one-way TCP does not use field ackno_. Instead, the TCP Sink creates an ACK packet by placing ACKNO in the field seqno_ of the ACK packet. So you just need to print out field seqno_ but you have to make sure that the corresponding packet is an ACK number. Cheers, Teerawat On

Re: [ns] warning:no class variable Trafficfile::debug_

Hi, I think your problem may be caused by 1. You did not bind variable debug_ to the OTcl domain. Go to the Class TrafficFile and see whether the variable debug_ is bound properly. 2. Class TrafficFile does not have the variable debug_ at all. In this case, you have to declare it in Class

Re: [ns] throughput calculation

Hi, There are several ways to compute throughput. If you use TCP, the simplest way is to measure the sequence number and divide it by simulation time. You add the following into your simulation script ... $ns at 10.0 $ftp stop $ns at 10.1 puts puts \The final TCP sequence number is [$tcp set

Re: [ns] Ns2 problem in tclsh

Hi Does ns start at all? From my understanding, its like ns works properly. But the variable ns is not used properly. Try to replace ns with $ns if you ever define set ns [new Simulator]. The former one is just a string while the latter one is the simulator object. cheers, Teerawat On

Re: [ns] tcl script

Hi, I suggest you to go thru NS2 FAQ http://www.isi.edu/nsnam/ns/ns-faq.html and NS2 tutorial (e.g., http://www.isi.edu/nsnam/ns/tutorial/index.html) before posting your question in the mailing list. BR, Teerawat On 8/22/2007, wathig dawelbait [EMAIL PROTECTED] wrote: hi I am new in using

[ns] Replying Etiquette

Hi All, I am just wondering about this mailing list. There are a lot of questions in this list. Suppose that some of us know the solution and would like to help out. Do we suppose to REPLY to the sender only or REPLY ALL so that others who have similar problems will know the answer too ?

[ns] Traffic Trace

Hi All, Is anybody familiar with a traffic trace? It is a traffic generator (of class Application/Traffic/Trace). I would like to know how would I create a traffic trace file to attach to the application. Thanks a lot, Teerawat

Re: [ns] error with agent!!!

Class Agent/SP is not a built-in NS2 class. You have to create an access to OTcl by using Tclclass. Then you will be able to access use it in OTcl. for example, static class TcpClass : public TclClass { public: TcpClass() : TclClass(Agent/TCP) {} TclObject* create(int , const

Re: [ns] Error whit ns

At the end of the installation, there are three things you need to do (shown on the screen). You have to set library variables and path into your running environment. BR, Teerawat On 8/1/2007, oscar andres [EMAIL PROTECTED] wrote: I was successful in installation, but I can't run the

Re: [ns] Simulation error

Dear Leonard, $ns trace-all generally generates complete information in the trace file. Unfortunately, you usually don't need most of it. A better way is not to use it. If you are interested in for example if you are interested in how seq. no. of TCP changes, you may use $tcp trace t_seqno_

Re: [ns] tcp sending rate

TCP does not have sending rate. It control transmission rate based on window size. The initial window size is 1, and it is increases as ACK packets are received. So you can't compute the sending rate in pkts/sec. BR, Teerawat On 6/30/2007, Zahraa Taki Al-Lawati [EMAIL PROTECTED] wrote: hi;

Re: [ns] Mobility Models

In my opinion, a beginner usually takes only few days to learn to use NS2 at TCL level. However, it will talk few months (or sometiem years) to learn the structure of NS2 and how to modify it. On 6/29/2007, salouhouni [EMAIL PROTECTED] wrote: Hello everybody.I am a new user in NS2 and I

Re: [ns] Call function of an agent

You have to declare your agent as a variable of another class. Initiate the agent variable at the constructor of that class. Then you can call public function of your Agent class through that variable. See class Timer for example. BR, Teerawat On 6/28/2007, Alexandre Malhão [EMAIL PROTECTED]

[ns] Need Help for TCPAgent::rtt_update()

Hi, I have a question in regards to function rtt_update of class TcpAgent. Here is the code: = BEGIN CODE = void TcpAgent::rtt_update(double tao) { ... double sendtime = now - tao; sendtime += boot_time_;