CS255 DelaCruz Presentation

7/21/2019 CS255 DelaCruz Presentation

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Network Simulation Tools

Exploration of Network Simulation Tools

Ren Tristan A. de la Cruz



Network Simulation Tools

● Graphic Network Simulators (GNS3)

● Interated !ultiprotocol Network Emulator"Simulator#IMUNES$

● Network Simulator % #NS-3$

● &isclaimer' This is presentation is in no wa( acomplete uide for usin the network simulation tools.It shows an initial o)er)iew of what the user can see#the interface$ and can do with the tools.



Graphic Network Simulator % #GNS3$

● GNS3 is a software emulator for networks.● It can emulate Cisco S(stems routers and networkswitches usin Cisco Internetwork *peratin S(stem#Cisco IOS$ imaes.

● It use Dynamips emulation software to emulate CiscoI*S.

● *fficial site' http'""www.ns%.com"



GNS% + Start Screen " New ,ro-ect



GNS% + All &e)ices



GNS% + Addin Cisco IS*



GNS% + IS*s for Cisco Routers



GNS% + routers can now /e used.



GNS% + &ra de)ices to main space



GNS% + Connect the de)ices.



GNS% + Run simulation.



GNS% + *pen router terminals.



GNS% 0 Summar(

●

1ou need to download router I*S to use the routerde)ice.

● 1ou can confiure each de)ice e.. 2ost3 RouterSwitches3 /( clickin the de)ice while simulation is

not runnin. i.e. chane the num/er of ports inswitches or routers

● &urin simulation run3 (ou can interact with therouters usin its terminals.

● The /eha)ior of the routers are same with the actualCisco routers /ecause the( are usin actual CiscoI*S.

Interated !ultiprotocol Network



Interated !ultiprotocol NetworkEmulator"Simulator

●

I!4NES is 5 realistic network topolo( emulation "simulation framework /ased on the 6ree7S& and8inux operatin s(stem kernel partitioned into multiplelihtweiht )irtual nodes3 which can /e

interconnected )ia kernel0le)el links to form ar/itraril(complex network topoloies.9

● *fficial Site' http'""imunes.net"



I!4NES + Start Screen



I!4NES + Addin routers.



I!4NES + Addin switches.



I!4NES + Addin host ,Cs.



I!4NES + Connectin de)ices.



I!4NES + ,C Confi #:"$



I!4NES + ,C Confi #"$



I!4NES + Switch Confiuration



I!4NES + Router Confi #:"%$



I!4NES + Router Confi #"%$

fi # " $



I!4NES + Router Confi #%"%$

I!4NES 8i k " ;i C fi



I!4NES + 8ink " ;ire Confi

I!4NES R i t



I!4NES + Run experiment.

I!4NES I t t " t i l



I!4NES + Interact w" terminals.

I!4NES I t t " t i l



I!4NES + Interact w" terminals.

I!4NES S



I!4NES 0 Summar(

● It is fairl( simple to set0up. Insert the de)ices (ou want and link them.● 1ou can confiure each de)ice to a certain extent/efore runnin the simulation.

●

1ou can e)en confiure the wire or the link.● 4nlike GNS%3 routers *S are simplified.● After runnin the experiment3 (ou can interact withthe consoles of routers and ,Cs.

Network Simulator %



Network Simulator %

●

5ns0% is a discrete0e)ent network simulator forInternet s(stems3 tareted primaril( for research andeducational use. ns0% is free software3 licensed underthe GN4 G,8) license3 and is pu/licl( a)aila/le for

research3 de)elopment3 and use.9● ns0% is code0/ase which means (ou need to code thesimulator itself in c<< usin ns0% li/rar(.

● Network Animator is part of ns0% that is used to ha)e

)isual representation of the simulations in ns0%.● *fficial Site' https'""www.nsnam.or"

NS % Installation



NS0% Installation

● &ownload the all0in0one compressed file for ns0% from

the we/site.● 7uild the ns0% executa/le after extraction ofcompressed files.

● 7uild the Network Animator executa/le.

NS %' 6ile Extraction



NS0%' 6ile Extraction

NS %' ns % /uild



NS0%' ns0% /uild

NS % Executa/le



NS0% Executa/le

●

After oin to the ns0x.(( director(3 (ou can see a filenamed 5waf9. It is the executa/le created after/uildin ns0% code.

● The actual 5simulator9 will /e a code in c<< with file

extention .cc.● ,lace this code in the folder 5scratch9 to run thesimulation usin the said file. There are examplesimulator file in 5example9 director(.

NS % Sample Run



NS0% Sample Run

● There is a sample file name 5first.cc9 in

5examples"tutorial9 director(. Cop( this file in5scratch9.

● To run this file simulation3 t(pe the command 5."waf00run scratch"first9.

● Note that the extention file =.cc is intentionall(remo)ed.

● Results of the simulation will /e displa(ed on theterminal.

NS0%' Simulation Run



NS0%' Simulation Run

NS0% Netanim 7uild



NS0% Netanim 7uild

● 6or the simulation to /e animated3 (ou need to /uildnetanim part of ns0%.

● The folder is on the same le)el as ns0x.((. Thedirector( is netanim0x.(((.

● T(pe the command 5>make NetAnim.pro9● The executa/le 5NetAnim9 should /e produced.

NS0%' Netanim 7uild



NS %' Netanim 7uild

NS0%' NetAnim G4I



NS %' NetAnim G4I

NS0%' *utput



NS %' *utput

● &epedin on (our confiuration of the simulation

#=.cc$3 the simulation can produce different outputs.#i.e. animation file =.xml3 trace files like conestion

window trace3 packet capture files =.pcap$.● 1ou can use wireshark application to read the packetcapture files and the NetAnim executa/le to )iew theanimation files.

NS0%' Anim Sample #:"%$



NS %' Anim Sample #:"%$

NS0%' Anim Sample #"%$



NS %' Anim Sample #"%$

NS0%' Anim Sample #%"%$



NS %' Anim Sample #%"%$

NS0%' Tutorial



●

6or ns0% tutorial'https'""www.nsnam.or"docs"tutorial"html"index.html

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CS255 DelaCruz Presentation