Computer Networks 40-443 
  CE Department- Sharif University of Technology 1 - Group 1 

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  1384-11-24 February 13, 2006 10:35 AM  
The revised edition of the final project grades is now available in the grades section. The grades in this file are considered finalized.

  1384-11-16 February 05, 2006 06:05 PM  
The final project Grades are ready in the grades section.

  1384-11-14 February 03, 2006 10:57 AM  
Dear Students;
These are the most frequently asked questions about the final project.

Q1. While the queue types are assigned to nodes in the graph of network, in NS they should be implemented on links. What should we do?
A1. In the triangle in the graph assign the queue of each node to the opposite link. For example the queue of R2 which is RED will be implemented on the link between R1 and R3 and so on.

Q2. Should the graphs be drawn for all the packets of the network or for each source respectively?
A2. The aggregate graphs are required and you should measure delay and packet loss for the entire network.

Q3. What is VBR?
A3. You can use exponential bit rate traffic source as a VBR source.

Q4. Are links Duplex?
A4. Yes, All links are Duplex

Q5. Will the final project follow the same policy as midterm?
A4. Yes, so be very careful about your source code, document and graphs!

Q5. What should be handed in and how?
A5. You should hand in the Tcl source code and any other script you have used to process the traces along with a PDF (no other format is acceptable) documents (at most 5 pages) containing all your graphs and brief description of the simulation process. All these should be put in a directory named as your student number. Finally the directory should be zipped and sent to The subject of the email should be your student number. If you are doing the project as a group put the name and student number of your colleague along with yours on the first page of the pdf document.

Q7. What tool should be used to draw the graphs?
A7. Any tool you prefer?

Q8. Should the simulation be performed on Linux?
A8. No it does not have to be done in Linux.

Q9. I can't use the http traffic source. What should I do?
A9. If you are unable to utlize the http traffic source you can do your simulation with exponential traffic source instead of http. 10% extra credit is considered for those who can use http.

Q10. Will the deadline be extended?
A10, No, since the grades have to be passed to the department in a very short time there will be no extention.

Mohammad H. Falaki.

  1384-11-05 January 25, 2006 05:42 PM  
In the Name of the Dearest

Dear Students,

Midterm project grades can be found on the grades section.

Please note that according to the grading policy, single member teams have received a 20% extra point, the case is the same for the people who have implemented IPC. A 10% penalty is calculated for late submissions. Finally, the copied projects are catagorized in groups and the grades are devided by the number of the people in the group (total number of people who has copied the code from each other).

If you see any problems in the grades, please feel free to email me about the case; but before that, please note that plagiarism and copies are not tolerated by any means, though cooperation and brainstorming is highly appriciated. Be careful that such actions, if detected, will lead into more catastrofic results in final project grades, up to and including losing all your grade!

Sincere regards,
Mahdi Kefayati

  1384-10-07 December 28, 2005 12:07 PM  
In the Name of the Dearest

Final project definition is uploded and can be found in assignments section.

The deadline in 1384/11/15. Please be careful about the deadline, it will NOT be extended.

For more information you can contact kefayati AT ce DOT sharif DOT edu or falaki AT gmail DOT com.

  1384-09-30 December 21, 2005 03:03 PM  
Homework #5 was announced. For more information, see the assignments section.

  1384-09-07 November 28, 2005 10:18 PM  
Grades of the 1st Quiz are available here.

  1384-09-05 November 26, 2005 04:06 PM  
For Ethereal Assignments attach just one file,
Do not zip and do not include photos.


  1384-09-05 November 26, 2005 09:23 AM  
The Ethereal assignment #4 , Homework #3 and Homework #4 announced. For more information, see the assignments section.

  1384-09-02 November 23, 2005 08:33 PM  
Check 1st Ethereal assignment grades.


  1384-08-18 November 09, 2005 07:08 PM  
3rd Ethereal assignment about TCP is now ready in the Assignments section.


  1384-08-17 November 08, 2005 03:21 PM  
As Mr. Akbari has already announced in the class the midterm project can be done as two member teams. However, those who perform the project alone may have benefits from the extra 20% credit!

  1384-08-16 November 07, 2005 07:29 PM  
In the Name of the Dearest
Dear Students,
You my implemet your DNS Server Benchmarking tool, the midterm project, without
IPC, that is, each child process can write its results to display itself and passing the info to his parent is not required. However, this part is left for extrs point up to 20/100, i.e. ones who implement result gathering and printing through parent process will recieve up to 20 extra points.
Also please note that submission due date is extended for 3 days, up to Aban 21st.
Sincere regards,
Mahdi Kefayati

  1384-08-11 November 02, 2005 01:12 PM  
Dear All,
I still receive Ethereal-1 mails !
For the first assignment bad subjects, late submissions and inappropriate attachments formats are forgiven.

From now on, they will lower your score.


  1384-08-08 October 30, 2005 10:36 PM  
Assignment for chapter two is ready.

  1384-08-04 October 26, 2005 10:40 PM  
For second Ethereal assignment only electronic mails are accepted!
And for some security reasons attach your answer files:
apprpriate formats are .pdf/.ps/.doc Do Not send .jpg or .bmp files!

Be more careful about the subject and the deadline.


  1384-08-04 October 26, 2005 02:28 PM  
In the Name of the Dearest

Midterm project definition is uploded and can be found here.

The deadline in 1384/8/18. Please be careful about the deadline.

A TCP/IP brochure from SANS Institure is also uploaded which can be considered a handy mini-reference of TCP/IP protocol suite.

For more information you can contact kefayati AT ce DOT sharif DOT edu or falaki AT gmail DOT com.

  1384-09-02 November 23, 2005 11:29 PM  
The second Ethereal assignment is ready.
The deadline is 84/08/14.


  1384-08-01 October 23, 2005 11:09 AM  
Send your Homework assignments to  torkjazi at ce or deliver the handscript to Mojtaba Torkjazi.

The subject should be exactly in this format:


x: assignment's number
yyyyyyyy: your student id

Mojtaba Torkjazi

  1384-08-01 October 23, 2005 11:08 AM  
Send your Ethereal assignments to i_sadeghi at ce or deliver the handscript to Iman Sadeghi.

Please note that the subject should be exactly in this format:


x: assignment's number
yyyyyyyy: your student id

No spaces / Case sensitive!


  1384-09-02 November 23, 2005 11:31 PM  
The first Ethereal assignment is ready.
The deadline is 84/07/30.


  1384-07-16 October 08, 2005 03:00 PM  
New metarials are uploade here.

  1384-07-16 October 08, 2005 12:45 AM  
Assignment for chapter one has been uploded.

  1384-09-02 November 23, 2005 11:41 PM  
Happy new semester!

Behzad Akbari

3 Units

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