NS2 LAB: EX1 instruction

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NS-2 LAB EX1 instruction
Miriam Allalouf

• 2003-2004 - Semester A

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NS-2 lab Ex1 instruction

• More Installation inst
• Ns-2.26 over cygwin
• Follow Christian instructions (patch install)
• Attached the file bashrc copy it to be your
  .bashrc file and out your login (instead of
  miriam) in the ns_home variable.
• Few more ltcygwin installgt tips
• Use the ltinstallgt option when installing cygwin
  (and not the default)
• When running the ns2 setup.exe - there are 2
  buttons that have to be chosen   1. File mode
  UNIX/ DOS (additional EndOfLine char for DOS) -
  should choose UNIX (even though installing on PC/
  Win. platform).  2. Install for All Users or
  Just Me - should choose All Users even if a
  single user is using the installation.

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NS-2 lab Ex1 instruction

• Exercise 1 Instruction
• EX1 Computes different types of per-node delays
  propagation, transmission and end-to-end
• Trace file
• action time flow-src flow-dst pkt-type
  length-------
• flow-ID node-from.port node-to.port seq-nr
  pkt-id
• 'action' can beenqueue (), dequeue (-), drop
  (d), received (r)...
• r 0.0028 5 0 tcp 1000 ------- 3 5.0 9.0 0 3

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NS-2 lab Ex1 instruction

• Exercise 1 Instruction con1
• Analyzer program gets a trace file and outputs
  the delays
• The analyzer program written in java get 4
  parameters lttrace filegt ltnodesgt ltlinks
  distancegt ltpropagation delaygt
• Execute from shell
• Create classes directory
• Open archive under classes
• Type java -classpath classes ns2.DelayAnalyzer
  out.tr ltnodesgt ltlinks distancegt ltpropagation
  delaygt
• Execute from TCL file
• exec java -classpath classes
  ns2.DelayAnalyzer out.tr ltnodesgt ltlinks
  distancegt ltpropagation delaygt

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NS-2 lab Ex1 instruction

• Exercise 1 Instruction cont. 2
• Question 1
• Take tcl example and change parameters
• Run different scenarios
• Get results using the analyzer program
• Question 2
• Change topology and application (from CBRUDP to
  FTPTCP)
• Run different scenarios
• Get results using the analyzer program

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Basic otcl
NS-2 lab Ex1 instruction

• Class mom
• mom instproc greet
• self instvar age_
• puts age_ years old mom How are you doing?
• Class kid -superclass mom
• kid instproc greet
• self instvar age_
• puts age_ years old kid Whats up, dude?

• set a new mom
• a set age_ 45
• set b new kid
• b set age_ 15
• a greet
• b greet
• 45 years old mom How are you doing?
• 15 years old kid What's up, dude?

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NS-2 lab Ex1 instruction

• FTP
• Create TCP agent and attach it to the first
  node
• set tcp new Agent/TCP
• tcp set packetSize_ packetSize
• .
• .
• .
• Create FTP application
• set ftp new Application/FTP
• ftp attach-agent tcp
• ns at 0.2 "ftp produce no_packets" or
• ns at 0.2 "ftp send no_bytes
• ns at 600.0 "finish"
• ns run

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NS-2 lab Ex1 instruction

• Class Hierarchy C/OTcl class hierarchy
• Can be reached from the ns home page

9
NS-2 lab Ex1 instruction

• More Installation inst
• Ns-2.26 over cygwin
• Follow Christian instructions (patch install)
• Attached the file bashrc copy it to be your
  .bashrc file and out your login (instead of
  miriam) in the ns_home variable.
• Few more ltcygwin installgt tips
• Use the ltinstallgt option when installing cygwin
  (and not the default)
• When running the ns2 setup.exe - there are 2
  buttons that have to be chosen   1. File mode
  UNIX/ DOS (additional EndOfLine char for DOS) -
  should choose UNIX (even though installing on PC/
  Win. platform).  2. Install for All Users or
  Just Me - should choose All Users even if a
  single user is using the installation.