Re: [ns] Ns2 version for Ad hoc networks
Hi I suggest ns-2.29... regards, Carlos Quiroz > > Hi > > I am interested in working in Ad hoc Networks. Can you please suggest > me the version of Ns2 which I can use for simulating Ad hoc Networks? > > Regards > S.Rajapriya > > > > - > Relax. Yahoo! Mail virus scanning helps detect nasty viruses! > ^ If I am not for myself, who will be for me? If I am for me only, who I am? And if not now, when? Misnah Abat. ^ Ing. Carlos Alberto Quiroz-Perez [EMAIL PROTECTED] Electrical & Computer Engineering University of Victoria, Victoria, BC, Canada Office: ELW A110 Lab: ELW B335 Cell phone: (250) 217-99-71
[ns] problem with new Ping over AODV protocol...
Hi all, sorry bout the repost but my last mail looked strange :\
I would be really happy if anyone could help me with my ns2 problem.
Im trying to write my own ping protocol running on AODV, and I am
getting some strange behaviour.
It seems like the packets arent recognised in the trace files (I might
be wrong here), and after a short while I get a seg. fault.
I based my Ping protocol on the one found in Marc's tutorial and used
the new recommended way of setting the offset.
My ns2 is 2.29 built from the packages (not all-in-one).
When I run my tcl-script I get this as output:
$ ns wtf_AODV_ping.tcl > debug.txt
INITIALIZE THE LIST xListHead
SORTING LISTS ...DONE!
Segmentation fault
$
my topology is 1000x1000 with 16 nodes evenly spread out.
The nodes are set up like this:
set opt(chan) Channel/WirelessChannel
set chan_1_ [new $opt(chan)]
$ns_ node-config -adhocRouting AODV \
-llType LL \
-macType Mac/802_11 \
-ifqType Queue/DropTail/PriQueue \
-ifqLen 50 \
-antType Antenna/OmniAntenna \
-propType Propagation/FreeSpace \
-phyType Phy/WirelessPhy \
#-channelType Channel/WirelessChannel \
-topoInstance $topo \
-agentTrace ON \
-routerTrace OFF \
-macTrace OFF \
-movementTrace OFF \
-channel $chan_1_
And the nodes all have one agent each (Agent/PingAodv). The agents are
getting connected to it self to prevent some error messages from ns:
$ns_ connect $PA($i) $PA($i)
Everything runs fine till after the first ping packet is sent:
$ns_ at 50 "$PA(0) send 5".
My ::command looks like this.
int PingAodvAgent::command(int argc, const char*const* argv) {
if (argc == 3) {
if (strcmp(argv[1], "send") == 0){
//create new packet
Packet* send_pkt = allocpkt();
//get the ip header of the new packet
hdr_ip* send_iph = hdr_ip::access(send_pkt);
//set the dst_.addr to the requested node's ip
send_iph->dst_.addr_ = (atoi(argv[2]));
//get the ping header from the packet
hdr_pingaodv* pingaodvh = hdr_pingaodv::access(send_pkt);
//set the direction and the time the ping packet was sent
pingaodvh->direction = 0; // 0 = request
pingaodvh->sent_time = Scheduler::instance().clock();
// Send the packet
send(send_pkt, 0);
cout << "send -> TCL_OK" << endl << flush;
//tell TCL everything is allright
return(TCL_OK);
}
}
return (Agent::command(argc, argv));
}
::command returns so it seems to work fine (the debuglines are printed
after the send-command).
in my common/packets.h I changed it to look like this:
...
// insert new packet types here
//inserted by me
PT_PINGAODV,
//--
PT_NTYPE // This MUST be the LAST one
};
...
and
...
// XCP
name_[PT_XCP]="xcp";
//added by me
name_[PT_PINGAODV]="PingAodv";
name_[PT_NTYPE]= "undefined";
}
...
In my ns-default.tcl I changed it to look like this
...
#
# Agents
#
# pingaodv inserted by me
Agent/PingAodv set packetSize_ 64
...
The first lines in my trace file:
--start--
s 50.0 _0_ AGT --- 0 undefined 64 [0 0 0 0] --- [0:0 5:0 32 0]
r 50.018762000 _5_ AGT --- 0 undefined 84 [13a 5 0 800] --- [0:0
5:0 30 5]
s 50.018762000 _5_ AGT --- 1 undefined 64 [0 0 0 0] --- [5:0 5:0 32 0]
r 50.018762000 _5_ AGT --- 1 undefined 64 [0 0 0 0] --- [5:0 5:0 32 0]
I thought that it should say PingAodv instead of undefined here.
The tracefile just look like this for another 39000 lines and then the
seg fault kicks in at time 50.018762000.
Does anyone have any clue on what I am doing wrong here?
Henrik
[ns] (yet another) doubt on CSThresh_ and RxThresh_
Hello, I am trying to simulate a network where the interrow spacing is 19m and intercolumn spacing is 24m. I have the node's sensing range as 15m. Looking at some old mail in this mailing list: It depends on what carrier-sensing range do you want. If you use the default values, your carrier-sense range will be about twice the receiving range. If you would like to see the effects of hidden nodes in your simulation, you should set carrier-sensing range same as the receiving range. So, if you want to set receiving range 'd_1' and carrier sensing range 'd_2' (you must have d_2>d_1), then threshold.cc with 'd_1' provides you the RXThresh_ and the same program with input parameter 'd_2' will give you CSThresh_. I generated RxThresh_ using the threshold program and varied it as mentioned above. The source generates packets but it is not picked up by any other node. why? Also, changing Pt_ alone to control transmission range - is that acceptable? Any suggestions welcome. Regards, Sita
[ns] problem with my Ping over AODV protocol...
[ns] user-defined data over UDP
Dear all, I am trying to send user-defined packets over UDP. Can any body provide me with the changes that need to be made in order to override the send/receive functions so that UDP will transport my packets. I really need this quickly, so please help if you know Thanks alot Suhaib _ FREE pop-up blocking with the new MSN Toolbar - get it now! http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
[ns] how to use function handle of a mac object??
Hello, How can I use function handle of a mac object?? Where can I get that info? Thank you
[ns] Messages from the App layer to the Routing Layer
Hello, I'm looking for a way to send some extra info form the Application layer to the Routing Agent. I'm using AODV as routing protocol, do you know in wich ns-2 source files should I look to make this? Thank you very much. -- Jon de Andrés Frías GPG: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4E856203
Re: [ns] Can we get rid of TCP in wireless?
I would not agree with that, since for example AODV, one of the most common routing protocols in MANETs uses UDP to transmit its routing packets (RREQ, RERR, etc). However, in order to avoid TCP/UDP you would have to tamper with the specific application that accesses these layers in the source files. -Fk On 2/5/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > > -- Forwarded message -- > From: [EMAIL PROTECTED] > To: ns-users@ISI.EDU > Date: Sat, 4 Feb 2006 22:25:52 -0500 > Subject: [ns] Can we get rid of TCP in wireless? > Hi all, > > It seems that all the wireless network simulation examples in ns tutorials > adopt such a format: "app->TCP/UDP->routing->MAC->PHY". However, there > is no transport protocol in real wireless implementations. Is it possible > to get rid of TCP/UDP and connect application directly to the routing? > > Thank you in advance for your attention. > > > > > > > -- Filippos N Kolovos Software Systems Analyst & Engineer M.Sc. (Eng.) in Data Communications IT Department University of Macedonia Library Egnatia 156, P.O.Box 1591 540 06 Thessaloniki, Greece E-Mail: [EMAIL PROTECTED], [EMAIL PROTECTED] --
Re: [ns] Ns2 version for Ad hoc networks
The version I could use would be NS-2.28 at the earliest. -Fk > > -- Forwarded message -- > From: raja priya <[EMAIL PROTECTED]> > To: NS > Date: Sat, 4 Feb 2006 22:49:42 -0800 (PST) > Subject: [ns] Ns2 version for Ad hoc networks > Hi > > I am interested in working in Ad hoc Networks. Can you please suggest me > the version of Ns2 which I can use for simulating Ad hoc Networks? > > Regards > S.Rajapriya > > > > -- Filippos N Kolovos Software Systems Analyst & Engineer M.Sc. (Eng.) in Data Communications IT Department University of Macedonia Library Egnatia 156, P.O.Box 1591 540 06 Thessaloniki, Greece E-Mail: [EMAIL PROTECTED], [EMAIL PROTECTED] --
Re: [ns] Queue length for wireless enviorenment
queue is just before the source ;-) so check it out. well seriously it depends upon performance you want to evaluate. so plz take a look at your parameters. On 2/5/06, dharmendra <[EMAIL PROTECTED]> wrote: > > > Hi, > > I have some doubts regarding wireless medium as: > Where is queue in wireless medium between a tcp source and sink? > For wired medium i think queue is in the wired link. > > Thanks in advance > Dharmendra > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > -- Kamal
[ns] Fwd: help needed flow monitoring
> 1. how do i interpret the per flow trace file? It depends what performance parameters you ld like to look at. So first check that. Once done, approach packet by packet, read notes Eitan Altman's notes on ns2 on how to use trace files. (how to extract useful interepretation). 2. how do i make a study of the service time recieved by each flow? im using > a FIFO discipline well better check packets.. and thus flow's arrival time at a node and then at what time its departed.. be careful abt the kind of distribution u use. good lucK thanks > > -- > keep mailing > urs > @ditya > -- Kamal -- Kamal
[ns] Queue length for wireless enviorenment
Hi, I have some doubts regarding wireless medium as: Where is queue in wireless medium between a tcp source and sink? For wired medium i think queue is in the wired link. Thanks in advance Dharmendra -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
[ns] NS2 Topology
II'm a newbie to NS2, I wil like u guys to help me out. I will like to know how to generate a topology of mobile nodes with access point (one or more). The tutorialz I read were using the Ad Hoc routing method but I will like to use the Infrasture routing method. Thnx. (Is there any tool for generating such topology?) Lekkie.
[ns] XGRAPH PROBLEM
Hi all, well i tried to run an example which executes the xgraph but didn`t work .. am using "cygwin" and "NS-v 2.29" .. though i have the directory " xgraph-12.1" .. plzz help me .. and here is the result $ ns example4.tcl ns: finish: couldn't execute "xgraph": no such file or directory while executing "exec xgraph out0.tr out1.tr out2.tr -geometry 800x400 &" (procedure "finish" line 8) invoked from within "finish" pl help ! thanx
Re: [ns] implementation of multicast protocols of MANET in ns-2.28
Hi Pooja, ODMRP is implemented in NS 2.1b8, but you'll have to grab Monarch extensions from http://www.monarch.cs.cmu.edu/software.html Dhammika On 2/5/06, Pooja Vyavahare <[EMAIL PROTECTED]> wrote: > > hello all, > > I am new to NS and wanted to use multicasting protocols in MObile ad-hoc > networks loke ODMRP, AMRIS & AMRoute. Inn many of thye papers in litarature > it is written that they are available in NS. But in NS-2.28 i could not > found them. can anyone is having these implementations? Can u please help > me? > I will be very thankful of u. > > waiting for any type of help, > > thanks in advance > > Pooja. >
[ns] R: MAC protocol
>I'd like also to check, and maybe to change the size of the >contention window in 802_11, >but I can't find it. Check tcl/lib/ns- default.tcl, where all the default values for tcl-configurable parameters are listed. You can find there the default settings for CWmin and CWmax, and you can override them in your tcl script using the same commands. Regards, Marco Fiore
[ns] implementation of multicast protocols of MANET in ns-2.28
hello all, I am new to NS and wanted to use multicasting protocols in MObile ad-hoc networks loke ODMRP, AMRIS & AMRoute. Inn many of thye papers in litarature it is written that they are available in NS. But in NS-2.28 i could not found them. can anyone is having these implementations? Can u please help me? I will be very thankful of u. waiting for any type of help, thanks in advance Pooja.
[ns] R: Can we get rid of TCP in wireless?
> It seems that all the wireless network simulation examples in ns tutorials >adopt such a format: "app->TCP/UDP->routing->MAC->PHY". However, there >is no transport protocol in real wireless implementations. Is it possible >to get rid of TCP/UDP and connect application directly to the routing? Actually, a transport protocol *is* present in real wireless implementations. Moreover that protocol is often TCP, without which you could not perform any task requiring reliable data transfer (e.g. internet browsing, file sharing). Maybe you mean that in your simulation you do not need reliability at transport layer: in that case it is sufficient to use the UDP protocol... you can do that simply changing the level 4 protocol from TCP to UDP... Regards, Marco Fiore
Re: [ns] problem running examples
The problem is that even though you have Cygwin you do not have an X environment to execute X applications as NAM. The solution to this problem, would be to install (in addition to cygwin), the KDE ebvironment for Windows, that co-operates with cygwin. In this way you will have an X desktop, which will provide you with the appriopriate $DISPLAY variable for your X environment. NAM is an X windows application, so it must have an X Desktop (environment) to run. I use KDE with cygwin in my Windows NS-2 machines successfully. You can find it here: http://kde-cygwin.sourceforge.net/. However, please note that you need to have Windows 2000 or XP in order to be able to install the KDE Desktop. After the installation of KDE you will be able to execute ns and run your scripts, via the KDE desktop by opening a Terminal program. Also note that KDE requires to already have installed cygwin, on top of which will be installed. Then you execute KDE to load the desktop and from there you execute a terminal program (through the Graphical Menus) to have access to the bash shell. On 2/3/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: -- Forwarded message -- From: "Hailun Tan" <[EMAIL PROTECTED]> To: "Mohammed Abu-Khadra" <[EMAIL PROTECTED]> Date: Fri, 3 Feb 2006 11:00:08 +1100 (EST) Subject: Re: [ns] problem running examples !!! easy!!! type startxwin.bat in cygwin terminal, which will lead you to another terminal... There you can use nam!!! > [ns] problem running examples !!! > > Hi i have a problem in running some basic examples in ns-2 ... am > using ns-2 (v. 2.29) on cygwin for windows !! here is the result from > running the example: > $ ns example1b.tcl > [EMAIL PROTECTED] /usr/local > $ nam: no display name and no $DISPLAY environment variable -- Filippos N Kolovos Software Systems Analyst & Engineer M.Sc. (Eng.) in Data Communications IT Department University of Macedonia Library Egnatia 156, P.O.Box 1591 540 06 Thessaloniki, Greece E-Mail: [EMAIL PROTECTED], [EMAIL PROTECTED] Phone: +30 2310 891 830, Fax: +30 2310 857 794 --
