Κυριακή, Σεπτεμβρίου 02, 2007

Disappointed with ns-2

I am writing a survey for some common routing protocols, specifically the AODV, DSDV, DSR, TORA, GPSR, OLSR. For the simulations I chose ns-2 (latest version 2.31) mostly because it can be used in Linux although it is not installed from a deb/rpm file. I made some simulations and I wrote some shell and awk scripts for extracting data for statistics.

Although I have spent much time for scripting , I am not disappointed with this. My disappointment comes from the lack of help from the developers and expert users. I and everybody else who tried to make a simulation using TORA protocol had almost the same problem. But as it is seen in the ns-2 mailing lists when all these people sent an e-mail asking for help nobody answered. Even the sample scenarios for TORA do not work. The problem most people have is this:

...
"$ns node"
("for" body line 2)
invoked from within
"for {set i 0} {$i < $val(nn) } { incr i } { set node_($i) [$ns node] }" (file "10nodes_traffic50_stable.tcl" line 59)

....

I can say that maybe some settings are missing but the same happens with the samples!

The programming language of ns-2 is Tcl and C. Tcl is a little difficult, at least for me, language although I made some modifications to some Tcl programs. If I had more time I would learn Tcl but I don't. I tried to find some older versions of ns-2 like 2.26 but the latest I found is 2.29.

I hope that ns-3 will solve these problems. When I finish my work I will upload all my scripts because they are proven to be very useful.

Σάββατο, Μαΐου 12, 2007

Working with ns-2

I must write a paper with the pros and cons of some popular routing protocols. I have to use a simulator and I decided to use ns-2. I found some many sites which can help me because it is my first time with ns-2.

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Τρίτη, Μαΐου 01, 2007

Other Anti SPAM filters

Some days before I mentioned the Bogofilter as an anti SPAM filter for Evolution. There are some others you can use in Linux and Windows or only Windows/Linux.

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Κυριακή, Απριλίου 15, 2007

What's New with Statistics ver. 0.7

The Easter Holiday is a gift!

I found free time to work on the Joomla modules. I added the Remository and DOCMan options on the What's New with Statistics.

I am also working on the Module with the links and the option of using the Zoom Gallery.


You can click here to download it.
Click here to see the Changelog.

Σάββατο, Μαρτίου 10, 2007

Using Bogofilter in Evolution

You can setup Bogofilter, an antispam filter, in Linux within a few minutes!


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