S-38.188 Computer Networks (Spring-03)

5.5.2003 Groupworks have been graded (except Dipoli muunto course)
FAQ Updated 10.4.2003 (10:22)
19.3.2003 Example code in assignment corrected (lines 69-71, problems with line breaks)
17.3.2003 Example code corrected (lines 69-71, problems with line breaks, corrected first time 28.2.2003)
10.3.2003 New version of assignment procedure flowstats2 corrected
5.3.2003 Correction to assignment: page 22, command on two lines should be one line and should read
$bottlelink attach-monitors [new SnoopQueue/In] [new SnoopQueue/Out] [new SnoopQueue/Drop] $qmon
28.2.2003 Correction to assignment path name source /p/gen/courses/S38/S38.188/use fen corrected to gen.
The assignment (new version 19.3.2003)
Example code (new version 17.3.2003)

The group assignment is done in the same groups of two as the preproblems.
The group work will be carried using ns2 simulation tool.
http://www.isi.edu/nsnam/ns/
You should start familiarizing yourself with the tool as soon as possible.
http://www.isi.edu/nsnam/ns/tutorial/index.html
Weekly times are reserved from the UNIX workstation classrooms
http://www.ee.hut.fi/unix/
of the department (I345, B201, and B215) for you to do your assignment Wed 12-16 during the period 5.3.-23.4.
The program is installed on the SunOS 5.8 sun4u architectures in room B215. You can use command uname -srm to verify the architecture.
In order to use the workstations you need to have the access right of the department. If you are a student of the department and you have a UNIX user name, you should have the access right of the department automatically. Students from other departments should check if they can log on the workstations. If you do not have access, please e-mail me with the subject of your e-mail containing the text "S-38.188 username xxx", where xxx is your username. I will take care of registering your user name.
You can also install ns2 on your own computer, but the course personnel will not be able to give more than minimal support on how to do it.

Connect yourself to a workstation, where ns2 is installed.
To load the program to your own path, give the command source /p/gen/courses/S38/S38.188/use The script should tell you what UNIX shell you are using and what command you should give next (same source command but file use replaced with use.xxx). If you have a bash shell, then you give the source command with the file use.sh.
Run the simulation file saved as xxx.tcl with the command ns xxx.tcl
In order to save disk quota use a /tmp directory for temporary files and compress your output files with gzip.

Grades 0, 1, 3, 5. Note that if you do not pass the group assignment, you may not take the exam and you may thus not finish the course.
Course grade will be roughly 25% group assignment and 75% exam.

If the information on this page is unclear mail to eeva.nyberg@hut.fi

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