Hello everyone.
I have installed ns-allinone-2.31 and CRCN patch using information from here
http://stuweb.ee.mtu.edu/~ljialian/installation.htm
everything went smoothly(my OS environment is ubuntu12.04).When I use the test case of CRCN "test4wcett.tcl",there is such error:
"format_wcett: invalid WCETT packet type"
I tried to solve this problem ,but still can't find any idea
Can you help me ?

Thank you in advance

Welcome to LQ.

A failing $ ns(-crcn) test4wcett.tcl : Means a failed CRCN build.

The latest instructions, post #5 here
http://www.linuxquestions.org/questi...rror-940388/#5

Ubuntu 12.04, 32bits : gcc / g++ version 4.1.2 must be used :
export CC=gcc41 CXX=g++41 && ./install

gcc41 / g++41 for Ubuntu 11.10 .. 12.x, post # 47 here ..
http://www.linuxquestions.org/questi...532/page4.html

CRCN examples / test results : crcn-examples-032013.tar.bz2
https://docs.google.com/file/d/0B7S2...it?usp=sharing
And https://docs.google.com/file/d/0B7S2...it?usp=sharing

All LQ crcn http://www.linuxquestions.org/questions/tags/crcn/

-

Thank you for reply.
However,when I export CC=gcc-4.1 CXX=g++-4.1 && make clean && make ,the process abort.here is the error:

trace/cmu-trace.o: In function `hdr_wcett::access(Packet const*)':
cmu-trace.cc.text._ZN9hdr_wcett6accessEPK6Packet[hdr_wcett::access(Packet const*)]+0x7): undefined reference to `hdr_wcett:ffset_'
collect2: ld return 1

there is something wrong with cmu-trace..
Oh,after adding the four lines to Makefile,it went smoothly,
wcett/wcett_logs.o wcett/wcett.o \
wcett/wcett_rtable.o wcett/wcett_rqueue.o \
mac/macng.o mac/maccon.o\
mac/macngenhanced.o\
but the primary problem is still here,"format_wcett: invalid WCETT packet type"..

I'm so confused.
can you help me ?
thank you in advance.
-----------------------------------------------------

# 3 : Do not quote complete posts, please.


# 3 : Not quite clear what your question is :
"but the primary problem is still here,"format_wcett: invalid WCETT packet type"..

? A new failed build ?

-

Sorry.
My OS environment is :ubuntu12.04 ns-allinone-2.31 gcc4.6 g++4.6.
my steps are as follows:**
1.sudo apt -get install build－essential
2.sudo apt-get install tcl8.4 tcl8.4-dev tk8.4 tk8.4-dev
3.sudo apt-get install libxmu-dev libxmu-headers
4.sudo dpkg -i gcc41-compat-4.1.2-ubuntu1210_i386.deb g++41-compat-4.1.2_i386.deb
5.reboot
6.cd ns-allinone-2.31
7.export CC=gcc-4.1 CXX=g++-4.1*&& ./install

then the installation process abort.It said:

"checking whether the C compiler (gcc-4.1 ) works... no
configure: error: installation or configuration problem: C compiler cannot create executables.
tcl8.3.2 configuration failed! Exiting ...
Tcl is not part of the ns project."

Thank you for reply.

# 3 .

OK, you are right, the build will fail on Ubuntu 12.04 - i686,
so far concerns test4wcett.tcl.

a) cd ns-allinone-2.31/
b) tar xvf crcn-ns2.31.tar.gz
c) export CC=gcc41 CXX=g++41 && ./install
... I.e. not gcc-4.1 and g++-4.1 : That's an old Ubuntu (10.04) compiler.

I will try to build a "crcn.deb" package : By using Ubuntu 10.10,
which makes a better ns-2.31.

-

Thanks for your reply.
I tried to install gcc4.1 on ubuntu12.04,but it seems installing gcc 4.1 conflicts with gcc 4.6 .
So I want to change the OS environment to fit ns2.31+crcn.
Is there a suitable OS environment? a low version of Fedora or ubuntu ?

# 7.

The only "41" compiler packages working on Ubuntu 12.04 - i686
are those linked in post # 2 :
> http://www.linuxquestions.org/questi...532/page4.html
> #47

Generally the unsupported Ubuntu 10.10 provides
the best validation result for old ns2.
( I will upload the "crcn-ns-2.31-ubuntu1010_i386.deb" package later :
Will usually work perfectly with Ubuntu 12.04 ).

-

That is very nice of you.
Thank you very much!

Package : crcn-ns-2.31-ubuntu10_i386.deb
Download link : https://docs.google.com/file/d/0B7S2...it?usp=sharing

Ubuntu 12.04 : The package works perfect.
$ ns-crcn test4wcett.tcl : Will create test.nam 29.8MB and test.tr 21.5MB.
$ nam test.nam : A spectacular simulation, when you push the play button.

Also suggest : Use the example package crcn-examples-032013.tar.bz2
https://docs.google.com/file/d/0B7S2...it?usp=sharing
> TEST-ALL-tcl-2/, where the test outputs get different names :
1test.nam 2test.nam 3test.nam 4test.nam 5test.nam 6test.nam, etc. *.tr

-

Thank you very much.It works.I'm so excited.
"$ns-crcn 5-test4wcett.tcl..." is OK,the 5test.nam and 5test.tr are fine,too.
But it seems that there is no relationship between ns and ns-crcn,since "$ns 5-test4wcett.tcl..." still doesn't work.
Actually,I want to embed AOMDV routing protocol in CRCN-NS.But after installing crcn-ns-2.31-ubuntu10_i386.deb,
I suddenly have no idea of embedding a new routing protocol in the ns-crcn,because there seems to be no files such as packet.h and cmu-trace.cc to modify.
Can you help me?

# 11 .

Modifications like adding a new AOMDV routing protocol :
Then you will still have to build your own ns-allinone-2.31 / crcn
on an OS suitable for ns-allinone-2.31 .
( The package was built on Ubuntu 10.10 - i686.)

-

Sounds right.
The crcn-ns-2.31-ubuntu10_i386.deb seems to unpack those .o files that are needed.So there is no way to modify the ns-crcn that you uploaded before.Is that right?

Therefore,I want to know if there is a suitable "crcn.tar.gz" for ubuntu12.04.

By the way, "crcn-ns2.31.tar.gz" https://docs.google.com/open?id=0B7S...XEtS3ozTHpmRHM
is it suitable for ubuntu10.10 or Fedora17,or lower OS version?

Thanks for your reply.

# 13.

The patch crcn-ns2.31.tar.gz is simply the crcn for ns-2.31,
not OS specific.

I will make a CRCN install test on Fedora,
and let you know the validation result.

# 13.

Fedora's have a very short supported life.
The 'Long Term Supported' versions are CentOS 6 / Scientific SL6.

The validation test is identical to Ubuntu 10.10 :
14 group tests fail some tests.
( There are 103 group tests, that run the "2000" tests.)
And $ ns test4wcett.tcl : OK on CentOS6 / SL6.

So the suggestion is to use CentOS 6.4 or Scientific Linux 6.4
for your modifications.

-