hi all ns2 users I did CBR Over Satellite, then I have to compare CBR's behavior to VBR. Therefore I need VBR code if any body forward any code for VBR I'll appreciated. Thanks In advance
[EMAIL PROTECTED] wrote: Send Ns-users mailing list submissions to ns-users@isi.edu To subscribe or unsubscribe via the World Wide Web, visit http://mailman.isi.edu/mailman/listinfo/ns-users or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than "Re: Contents of Ns-users digest..." Today's Topics: 1. AODV - Route Repair Issue (Gabriel Barrera) 2. Re: developing new queue management (Faisal Siddiqui) 3. Re: developing new queue management (Ilyes Gouta) 4. Problem with Agent/TCP/FullTcp state variable (Siddharth Ramesh) 5. Help. How to get average byte per round in wireless ad hoc network (choong cheong) 6. Re: AODV - Route Repair Issue ([EMAIL PROTECTED]) 7. Re: Changing trace files (Martina Umlauft) 8. Re: UMTS extension (Dimitris Antonellis) 9. Re: Changing trace files (Dimitris Antonellis) 10. Re: please help in ODMRP (Dhammika Pathirana) 11. imlementation of GPS global positionning system (www triste) 12. about using random packet lengths instead of fixed for TCP (anand kunde) 13. Problem with using different frequency while simulating 802.11 (minhong) 14. problem while adding gprs ([EMAIL PROTECTED]) ---------------------------------------------------------------------- Message: 1 Date: Sat, 6 May 2006 19:00:18 -0500 From: "Gabriel Barrera" Subject: [ns] AODV - Route Repair Issue To: ns-users@ISI.EDU Message-ID: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hello. We need some help with AODV. In function void LocalRepairTimer::handle(Event* p) { // SRD: 5/4/99 aodv_rt_entry *rt; struct hdr_ip *ih = HDR_IP( (Packet *)p); /* you get here after the timeout in a local repair attempt */ /* fprintf(stderr, "%s\n", __FUNCTION__); */ rt = agent->rtable.rt_lookup(ih->daddr()); if (rt && rt->rt_flags != RTF_UP) { // route is yet to be repaired // I will be conservative and bring down the route // and send route errors upstream. /* The following assert fails, not sure why */ /* assert (rt->rt_flags == RTF_IN_REPAIR); */ //rt->rt_seqno++; agent->rt_down(rt); // send RERR #ifdef DEBUG fprintf(stderr,"Node %d: Dst - %d, failed local repair\n",index, rt->rt_dst); #endif } Packet::free((Packet *)p); } We can't see where is the code that "send a RERR to the originating node" when route repair attempt was unsuccessful. Can anybody help us to find out what is wrong? Thanks, Marcelo Dominguez Gabriel Barrera ------------------------------ Message: 2 Date: Sat, 6 May 2006 21:25:48 -0400 From: "Faisal Siddiqui" Subject: Re: [ns] developing new queue management To: "Ilyes Gouta" Cc: ns-users@ISI.EDU, "Eduardo J. Ortega" Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi, I am trying to modify the drop-tail queue so that the queue do not drops any packets but when the queue maximum size is reached, it stops sending the packet by stop creating further packets till there is some room available in the queue. In a nutshell, I want to implement head-of-line blocking mechanism without dropping any packets. I would like to know if someone has implemented such a thing and if yes, is it possible for them to share the code. If no, please suggest some ideas as how should I go about implementing this queue. All comments are highly appreciated. Thanks, - Faisal On 5/5/06, Ilyes Gouta wrote: > > > Hi, > > Did you check the TCL binding in the C++ part? The new class should have > a new binding, not the same one as declared for drop-tail. > > Regards, > Ilyes Gouta. > > Eduardo J. Ortega wrote: > > hi: > > > > Don't know if you received my last email, so I'll just write you > again: > > > > I already have the OTCL binding in my newQueue.h file. My sims define > the > > queue like this: > > $ns duplex-link $n1 $n2 1Mb 10ms DropTail (this works) > > but when i try to use my queue then i do > > $ns duplex-link $n0 $n2 1Mb 10ms newQueue > > which doesn't work. > > > > I'm pretty sure this can't be a code problem, since I've copied and > pasted > > drop-tail.{cc,h} to newQueue.{cc,h}, changed classes names and > recompiled but > > still won't work. Can you think of anything else I might be doing wrong? > > Thanks in advance. > > > > On Saturday 29 April 2006 16:06, you wrote: > >> Hi, > >> > >> You have to create the necessary TCL binding within your new C++ code > >> too. That binding will be used later by your simulation scripts. > >> > >> In the C++ part, you'll have to add a class like this: > >> > >> static class NewQueueClass : public TclClass > >> { > >> public: > >> NewQueueClass () : TclClass("Queue/NewQueue") {} > >> TclObject* create(int, const char*const*) > >> { > >> return (new NewQueue); > >> } > >> } class_new_queue; > >> > >> And then in the simulation script: > >> > >> $ns node-config \ > >> option1 \ > >> option2 \ > >> option3 \ > >> -ifqType Queue/NewQueue \ > >> > >> This will tell NS to use your new queue for the newly created nodes. > >> > >> Hope it helps, > >> Ilyes Gouta. > >> > >> On 4/29/06, Eduardo J. Ortega wrote: > >>> Hi: > >>> I tried this, recompiled ok, but my sims won't run no matter what my > code > >>> is. i thought maybe my code was wrong, so i decided to copy > >>> droptail.{cc,h} to fifo.{c,h}and change class names to FIFO, then add > >>> fifo.o to makefile and recompiile. It compiled, but again, sims won't > run > >>> when i try to use fifo instead of droptail. > >>> > >>> Any clues? > >>> > >>> On Saturday 29 April 2006 11:11, you wrote: > >>>> Hi, > >>>> > >>>> Have a look into the ~/ns-2.x/queue directory. You'll find all sorts > >>>> of implementations for different active queues. This include RED, > RIO, > >>>> PRIO, JOBS, etc. > >>>> > >>>> Implementing a new queue is rather easy actually, you'll have to > >>>> inherit from Queue and implement the enque() and deque() methods. > This > >>>> is really it! Don't forget to add you source code to NS's makefile to > >>>> get it compiled. > >>>> > >>>> Regards, > >>>> Ilyes Gouta. > >>>> > >>>> On 4/29/06, Eduardo J. Ortega wrote: > >>>>> hey there: > >>>>> > >>>>> anyone knows how to code new queue algorithms into NS? (for example, > >>>>> choke)? Thanks. > >>>>> > >>>>> -- > >>>>> Eduardo J. Ortega - Linux user #222873 > >>>>> "No fake - I'm a big fan of konqueror, and I use it for everything." > >>>>> -- Linus Torvalds > >>> -- > >>> Eduardo J. Ortega - Linux user #222873 > >>> "No fake - I'm a big fan of konqueror, and I use it for everything." > -- > >>> Linus Torvalds > > > > ------------------------------ Message: 3 Date: Sun, 07 May 2006 08:01:14 +0200 From: Ilyes Gouta Subject: Re: [ns] developing new queue management To: Faisal Siddiqui Cc: ns-users@ISI.EDU, "Eduardo J. Ortega" Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi, You could check blocked_ , unblock_on_resume_ and the resume() method inside ns2.2x/queue/queue.cc. You should wrap your new logic inside a new queue by exploiting those switches and adding another queue that will hold all the incoming packets when the primary queue is full (you'll have to pay attention to your inter-arrival and delivery rates and avoid the out of memory condition). This should solve your issues. Another approach would be to the block the packets at the application level not at the queue level by implementing a mechanism to notify the application that it can or can't send packets. Best regards, Ilyes Gouta. Faisal Siddiqui wrote: > Hi, > > I am trying to modify the drop-tail queue so that the queue do not drops > any packets but when the queue maximum size is reached, it stops sending > the packet by stop creating further packets till there is some room > available in the queue. In a nutshell, I want to implement head-of-line > blocking mechanism without dropping any packets. > > I would like to know if someone has implemented such a thing and if yes, > is it possible for them to share the code. If no, please suggest some > ideas as how should I go about implementing this queue. > > All comments are highly appreciated. > > Thanks, > - Faisal > > > On 5/5/06, *Ilyes Gouta* > > wrote: > > > Hi, > > Did you check the TCL binding in the C++ part? The new class should have > a new binding, not the same one as declared for drop-tail. > > Regards, > Ilyes Gouta. > > Eduardo J. Ortega wrote: > > hi: > > > > Don't know if you received my last email, so I'll just write > you again: > > > > I already have the OTCL binding in my newQueue.h file. My sims > define the > > queue like this: > > $ns duplex-link $n1 $n2 1Mb 10ms DropTail (this works) > > but when i try to use my queue then i do > > $ns duplex-link $n0 $n2 1Mb 10ms newQueue > > which doesn't work. > > > > I'm pretty sure this can't be a code problem, since I've copied > and pasted > > drop-tail.{cc,h} to newQueue.{cc,h}, changed classes names and > recompiled but > > still won't work. Can you think of anything else I might be doing > wrong? > > Thanks in advance. > > > > On Saturday 29 April 2006 16:06, you wrote: > >> Hi, > >> > >> You have to create the necessary TCL binding within your new C++ > code > >> too. That binding will be used later by your simulation scripts. > >> > >> In the C++ part, you'll have to add a class like this: > >> > >> static class NewQueueClass : public TclClass > >> { > >> public: > >> NewQueueClass () : TclClass("Queue/NewQueue") {} > >> TclObject* create(int, const char*const*) > >> { > >> return (new NewQueue); > >> } > >> } class_new_queue; > >> > >> And then in the simulation script: > >> > >> $ns node-config \ > >> option1 \ > >> option2 \ > >> option3 \ > >> -ifqType Queue/NewQueue \ > >> > >> This will tell NS to use your new queue for the newly created nodes. > >> > >> Hope it helps, > >> Ilyes Gouta. > >> > >> On 4/29/06, Eduardo J. Ortega < [EMAIL PROTECTED] > > wrote: > >>> Hi: > >>> I tried this, recompiled ok, but my sims won't run no matter > what my code > >>> is. i thought maybe my code was wrong, so i decided to copy > >>> droptail.{cc,h} to fifo.{c,h}and change class names to FIFO, > then add > >>> fifo.o to makefile and recompiile. It compiled, but again, sims > won't run > >>> when i try to use fifo instead of droptail. > >>> > >>> Any clues? > >>> > >>> On Saturday 29 April 2006 11:11, you wrote: > >>>> Hi, > >>>> > >>>> Have a look into the ~/ns-2.x/queue directory. You'll find all > sorts > >>>> of implementations for different active queues. This include > RED, RIO, > >>>> PRIO, JOBS, etc. > >>>> > >>>> Implementing a new queue is rather easy actually, you'll have to > >>>> inherit from Queue and implement the enque() and deque() > methods. This > >>>> is really it! Don't forget to add you source code to NS's > makefile to > >>>> get it compiled. > >>>> > >>>> Regards, > >>>> Ilyes Gouta. > >>>> > >>>> On 4/29/06, Eduardo J. Ortega > > wrote: > >>>>> hey there: > >>>>> > >>>>> anyone knows how to code new queue algorithms into NS? (for > example, > >>>>> choke)? Thanks. > >>>>> > >>>>> -- > >>>>> Eduardo J. Ortega - Linux user #222873 > >>>>> "No fake - I'm a big fan of konqueror, and I use it for > everything." > >>>>> -- Linus Torvalds > >>> -- > >>> Eduardo J. Ortega - Linux user #222873 > >>> "No fake - I'm a big fan of konqueror, and I use it for > everything." -- > >>> Linus Torvalds > > > > ------------------------------ Message: 4 Date: Sun, 7 May 2006 02:15:23 -0600 From: "Siddharth Ramesh" Subject: [ns] Problem with Agent/TCP/FullTcp state variable To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi, I was trying to assign and use state variables inside a FullTcp agent like is done using normal TCP agents. For ex, I create and use a session_number state variable below: set tcpagent [new Agent/TCP/FullTcp] $tcpagent set session_number 0 When I overload the done{} method for the FullTcp agent, I am not able to access any state variables which I created. ie, when I try Agent/TCP/FullTcp instproc done { } { puts [$self set session_number] } I get an error ---------------------------- ns: _o89 done: can't read "session_number": no such variable while executing "subst $[subst $var]" (procedure "_o89" line 5) (Object next line 5) invoked from within "_o89 next session_number" ("eval" body line 1) invoked from within "eval $self next $args" (procedure "_o89" line 18) (Agent set line 18) invoked from within "$agent set session_number" (procedure "_o89" line 4) (Agent/TCP/FullTcp done line 4) invoked from within "_o89 done" ------------------------------ The wierd thing is, if I create a done method specific to a particular instance of the FullTcp agent, I am able to use the state variables and I get no error. ie, the following works fine set tcpagent [new Agent/TCP/FullTcp] $tcpagent set session_number 0 $tcpagent proc done { } { puts [$self set session_number] } I have been digging around the code for the past 3 days but have not found why it behaves this way for the FullTcp agent alone (because it behaves just fine for a normal TCP agent). And yes, I did search the archives to the best of my knowledge and I couldn't find any information related to this. Any help would be greatly appreciated! Thanks, Sid ------------------------------ Message: 5 Date: Sun, 7 May 2006 02:05:13 -0700 (PDT) From: choong cheong Subject: [ns] Help. How to get average byte per round in wireless ad hoc network To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 Hi all, I'm doing the wireless mobile ad hoc network. How to get average byte per round? What is the formula? I have managed to figure out the new trace file. Is it possible to get it in the output files? How to get the average number of node per round? Please help. Appreciate it. Thanks. Best regards, Choong Wing Cheong --------------------------------- Yahoo! Mail goes everywhere you do. Get it on your phone. ------------------------------ Message: 6 Date: Sun, 7 May 2006 16:37:01 +0300 (EEST) From: [EMAIL PROTECTED] Subject: Re: [ns] AODV - Route Repair Issue To: "Gabriel Barrera" Cc: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain;charset=iso-8859-9 Hi, Function call chain for the localrepairtimer function is as follows: rt_resolve --> aodv_rt_failed_callback --> rt_ll_failed --> local_rt_repair --> and so localrepairtimer the head of the chain is rt_resolve. In this function, ch->xmit_failure_ = aodv_rt_failed_callback; statement says something to us. The only one place in the code that aodv_rt_failed_callback (and so local_rt_repair) is called, is the rt_resolve function. I think there is no need to send any RERR message in the localrepairtimer function. Because this function is called only if packet can't obtain media or isn't acked. The definition for xmit_failure callback is as follows at the packet.h file "called if pkt can't obtain media or isn't ack'd. not called if droped by a queue" I hope I am right ? Have a good day. Guzin Ulutas (CEng) ------------------------------ Message: 7 Date: Sun, 07 May 2006 15:46:17 +0200 From: Martina Umlauft Subject: Re: [ns] Changing trace files To: Diego Soares Cc: ns_users Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi! Instead of changing the C++ source you can pipe the trace output through awk before writing it to the trace file. This takes a little bit of computing power and (depending on the script) a bit of memory. But you can also save quite a lot of disk space (eg. by on-the fly calculation of average values during the simulation) and you save on disk access times. I do this all the time and it is a lot more flexible than changing the source code because you can simply plug your awk script into the .tcl script and change it very quickly whenever you want. eg. in the .tcl do the following: set tr [open "| awk -f filter.awk >out.tr" w] $ns trace-all $tr in filter.awk put your awk script or; if the awk command is very simple, just do it directly in the .tcl . eg. to just print column 2 and 4 do the following: set tr [open "| awk '{print $2 \" \" $4}' >out.tr" w] don't forget that you have to escape any " with \ (as shown in the example above)! lg, Martina Umlauft Diego Soares schrieb: > Thanks for the answer, but if i exclude the fields that i wanto to > eliminate, i get segmentation fault from the simulator, after I compile NS > again. > > What should I change to eliminate some fields???? > > > On 5/6/06, Sita S. Krishnakumar wrote: >> cmu-trace.cc >> >> >>> Hello NS users, >>> >>> Which source code should I chance to write only the fields that I want >> in >>> my >>> trace files?? I am simulation Ad-Hoc networks using new-trace format!!! >>> >>> -- >>> Diego G. Soares >>> >> >> > > > -- > Diego G. Soares ------------------------------ Message: 8 Date: Sun, 7 May 2006 17:28:48 +0300 From: "Dimitris Antonellis" Subject: Re: [ns] UMTS extension To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Check the EURANE extension of the ns for the UMTS ( http://www.ti-wmc.nl/eurane/ ) It has a very good manual for the instalation Cheers, Dimitrios Antonellis Message: 15 > Date: Fri, 5 May 2006 09:34:31 -0700 (PDT) > From: jaafer al-saraireh > Subject: [ns] UMTS extension > To: ns-users@ISI.EDU > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=iso-8859-1 > > Hi everyone > > Please, can you tell me how install UMTS extension in ns-2.28. > > The are UMTS extension developed by Pablo Martin and Paula Ballester > this extension have been working is 2.1b9a-gcc32 . But when I tried to > install 2.1b9agcc32 there are problems occurs during instllation. > > Br > ------------------------------ Message: 9 Date: Sun, 7 May 2006 17:40:08 +0300 From: "Dimitris Antonellis" Subject: Re: [ns] Changing trace files To: ns-users@ISI.EDU Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Check the files... trace/race.cc and trace/trace.h Cheers Dimitrios Antonellis Message: 6 > Date: Sat, 6 May 2006 11:04:39 -0300 > From: "Diego Soares" > Subject: [ns] Changing trace files > To: ns_users > Message-ID: > <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed === message truncated === --------------------------------- Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2ยข/min or less.
