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Old 08-25-2016, 01:50 PM   #1
abrartunio
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Issue of segmentation fault in Fedora12+NS2.31+CRCN while increasing number of nodes from 10 to 20


Dear Helpers

Hope you are doing well.
I am working on CRCN, while installing it on fedora12, everything was fine except few tests failed due to modification (CRCNpatch).
My query is regarding "Segmentation Fault", it only occurs when i change mobile nodes to 20 or above 10.
and in file crcn-examples_05.2014 every script executed successfully except crcn50.tcl which contains 50nodes.
Besides i checked common/mobilenode.h where it was defined in protected as
Protected: DstRtIndex DstRtIndex_[20]
increasing the array here does not resolve the issue as well.

I will be thankful if you can tell me reason/cause of this fault.
I will be most grateful if you can tell me solution to this problem.
 
Old 08-25-2016, 04:18 PM   #2
Habitual
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fedora 12 ?

Last edited by Habitual; 08-26-2016 at 12:55 PM.
 
Old 08-26-2016, 11:48 AM   #3
abrartunio
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code:
" MAC_802_11: accessing MAC cache_ array out of range (src 78, dst 8, size 20)! "
;

After playing for some time with scripts, I come across this thing before the line showing segmentation fault at terminal.
Can anybody have a little idea what must I do to come up with something to resolve this issue in near future.
Because, right now I am blank and have nothing to do.
 
Old 08-26-2016, 12:44 PM   #4
jmgibson1981
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First step would be verifying which version of Fedora you are running. Fedora 12 is so old and out of support that there is probably nothing that you can do to save it. Upgrade to a supported release, suggest CentOS 7 . Avoid Fedora as it only has a support cycle of 9 months I believe.

Last edited by jmgibson1981; 08-26-2016 at 12:46 PM.
 
Old 08-26-2016, 02:25 PM   #5
John VV
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as above
fedora 12 is well 12 TWELVE versions and 6 years out of date
-- DO NOT USE

using CentOS 6.8 or ScientificLinux 6.8 would be a way better option
i use sl6.8 for the long term mission software i use ( astronomy and spacecraft data )

and cent and sl are binary compatible with RHEL

now i am GUESSING HERE!!!!
but is crcn this ????????
"cognitive radio cognitive network "

http://faculty.uml.edu/Tricia_Chigan..._Simulator.htm

or
Clinical Research Collaboration Network

Last edited by John VV; 08-26-2016 at 02:29 PM.
 
Old 08-27-2016, 07:00 AM   #6
abrartunio
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Yes Mr. John VV. It is cognitive radio communication network.
I have tried it on fedora 9, fedora 13, Fedora 14 and fedora 17. In all these fedora versions I came across issues while installing ns2.31 and crcn patch. However, installation of n2.31+crcn was successful in fedora12. In validation test, I found few tests failed.
I successfully installed GUI on fedora 12 as well. This patch worked fine for 10 nodes but for more than 10 it gives "Segmentation Fault".
 
Old 08-27-2016, 12:35 PM   #7
John VV
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fedora is at fedora 24

do not use fedora 9,10,11,12,13, ...

ONLY!!! Fedora 23 and 24 are supported and support for 23 IS ENDING very soon

with out knowing the errors in the software build
there is not too much any one can do on fedora 12
there is NO software to install after 6 years

so

why are you trying to use a old and unsupported version of fedora ?
 
Old 08-27-2016, 12:50 PM   #8
abrartunio
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Actually, Fedora12 is the one of the versions where *ns2.31 (Network Simulator 2.31) can be successfully installed and patched with CRCN.tar.gz.
However, I have recently come across a thread on this forum, which says " Centos6.5 (32 bit) is the only supported version for CRCN+ns2.31.
I have already put this centos6.5.iso image on downloading as my next move.

http://www.linuxquestions.org/questi...-4175499622/#7
 
Old 08-27-2016, 12:57 PM   #9
John VV
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again centos 6.5 is unsupported
cent only supports the current version
CentOS 6.8 and 7.2
 
  


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