I have problem in running file "dsr.tcl"

num_nodes is set 6
INITIALIZE THE LIST xListHead
using backward compatible Agent/CBR; use Application/Traffic/CBR instead
Start of simulation..
channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 550.0
SORTING LISTS ...DONE!
Segmentation fault

Do you know, which output this file is supposed to provide ?

The command : ns dsr.tcl
→ → I get no output at all !

.....

I think dsr.tcl is protocol script. so you are not getting any output. Use this dsr protocol agent. create a simulation enviroment. that you should do.

1 members found this post helpful.

Hello sir
thank you alot ...

But i need your kind attention on "segmentation fault" part of the msg which i get from run of that command.
How can i overcome this fault actually.??

anyone is there ... with any solution of Segmentation Fault.

Have you tried running it as root?

Yes always sir... because i have only one account in my LAP that is admin... should i try with "sudo" command.??

just write
## this part used in dsr to avoid segmentation fault error
if { $val(rp) =="DSR"} {
set val(ifq) CMUPriQueue
} else {
set val(ifq) Queue/DropTail/PriQueue
}

Hello Sir,

I am trying to run wired-cum-wireless tcl in ns2.
The above mention tcl file is running well with dsdv as a routing protocol.when i replace dsdv with dsr and qtype as CMUPriQueue.

it shows me following error as i run command ns test.tcl

sneha@ubuntu:~/Desktop/test/
test18_05_2014$ ns test.tcl
num_nodes is set 2
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
can't read "ragent_": no such variable
while executing
"subst $[subst $var]"
(procedure "_o37" line 5)
(SplitObject set line 5)
invoked from within
"$self set ragent_"
(procedure "_o37" line 3)
(Node/MobileNode agenttrace line 3)
invoked from within
"$node agenttrace $tracefd"
(procedure "_o3" line 109)
(Simulator create-wireless-node line 109)
invoked from within
"_o3 create-wireless-node 1.0.0"
("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 [lindex $temp 0]"
invoked from within
"set BS(0) [ $ns_ node [lindex $temp 0]]"
(file "test.tcl" line 155)


please help me to resolve this error as early as possible.

Thanks and regards,
s20

Post #9, @s20.
First : The original 'ns-2.35/tcl/ex/wired-cum-wireless.tcl' → already has DSR →
set val(adhocRouting) DSR

And : Changing "set val(ifq) Queue/DropTail/PriQueue" → to →
set val(ifq) CMUPriQueue
... doesn't prevent the file from showing an OK simulation.


There is no "ragent_" in the original file !

So what are you doing ? Are you using a clean ns2 version ? No code changes ?
And did you do other changes to `wired-cum-wireless.tcl´ ?

Please attach your file as test_s20.tcl.txt (Or any new name, you'd prefer :
Already multiple files with the naming `test.tcl´ !
Attachments : The paper clip tool in the 'Advanced Editor'.
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Attached Files

CMUPriQueue__wired-cum-wireless.tcl.txt (3.0 KB, 60 views)

hello Sir,
Sorry for inconvenience.

Here is the actual topology need to be simulated.

It consists of three sections of links and four nodes.
The wired part including two sections of links, one is the link from the source to the router, and the other one is the link from the router to the base station. The wireless part is the link from the base station to the terminal. The bandwidth of the link from the source to the router is 100Mbps,and the delay is 1ms. The bandwidth of the link form the router to the base station is 100Mbps, and the delay is 49ms. The bandwidth of the link from the base station to the terminal is 1Mbps, and the delay is 0.01ms. The data packet's size is set to the fixed length 1000byte, and the range of wireless error rate is 0.001-0.01. The simulation last for 200s, and there is only one data stream named FTP which starts at 10s and ends at 200s.

With the above topology i need to use dsr as a routing protocol.
1. yes i am using clean ns2 version, no changes made to dsr protocol

Aim of the project is to improve performance of TCP Reno on wired-cum-wireless topology by making some changes in tcp reno.

in above topology tcl as a routing protocol tried DSDV it is working well but not with DSR and AODV.

herewith I am attaching my tcl file

Kindly suggest the solution

Thanks and regards,
s20

Attached Files

DSR_wired-cm-wireless.txt (6.1 KB, 74 views)

ive used the scenario that i made to run dsr but the cbr file not suited because it suited just for 25 nodes. does anyone have the cbr file that can adjust the more node because in my project it need 90-200 node. thks for the reply

# 12 .

Examples : ns-2.xx/tcl/mobility/scene/{ cbr-* }

Generating a new ``CMU's connection pattern´´ :
ns-2.xx/indep-utils/cmu-scen-gen/README
Examples, -nn 100 :
a) $ ns cbrgen.tcl -type tcp -nn 100 -seed 0.1 -mc 20 > cbr-100
b) $ ns cbrgen.tcl -type tcp -nn 100 -seed 512 -mc 20 -rate -4 > cbr-100-20-4-512
c) $ ns cbrgen.tcl -type vbr -nn 100 -seed 512 -mc 20 -rate -4 > vbr-100-20-4-512

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#13.

thanks. but when i called nam it got me error like this :

Cannot connect to existing nam instance. Starting a new one...
You are using the tracefile format older than 1.0a5
which will not allow you to run namgraph

and there arent node in nam..

can you tell the solution of this?

btw i used ubuntu 10.04,gcc++-4.3,nam 1.14

# 14 .

Please attach your edited tcl file as <name>.tcl.txt,
and the scenario files as <name>.txt

Remark : gcc-4.3 and g++-4.3 are not recommended.
Please use "4.1" : $ sudo apt-get install g++-4.1

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