Universitatea Valahia din TargovisteFacultatea de Inginerie Electrica,

Electronica si Tehnologia Informatiei

Sisteme avansate de comunicatii

Simulare in OPNET-Referat de laborator-

Profesor coordonator:

Masterand: Anul: I

Obiective:

Acest laborator urmăreşte modelarea şi analiza unei reţele folosită pentru aplicaţii clasice de date(email,http,ftp) în condiţiile în care se realizează o tratare diferenţiată a aplicaţiilor.

5. Temă pentru studenti:

5.1. Să se definească tipurile de aplicaţii configurate pentru reţeaua analizată în această lucrare:

In aceasta lucrare s-au configurat aplicatiile:posta electronica(e-mail),browsing(http) si file transfer(ftp).

5.2. Care sunt profilele create în reţeaua analizată cu OPNET-ul ?

Profilele create sunt:

Profile1 cuprinde aplicatiile:email,http,ftp.

Profile2 cuprinde aplicatiile:ftp,http.

Profile3 cuprinde aplicatia:ftp.

5.3. Să se definească statisticile globale (Global Ststistics) şi statisticile individuale pe noduri (Nodes Statistics) care pot fi obţinute în urma simulării reţelei pentru aplicaţiile folosite (email, ftp şi http).

Statistici globale Atribute controlateEmailftp Download response time,Upload response time,Traffic

sent(packets/sec),Traffic sent(bytes/sec),Traffic received(packets/sec),Traffic received(bytes/sec)

http Object response time,Page response time,Traffic sent(packets/sec),Traffic sent(bytes/sec),Traffic received(packets/sec),Traffic received(bytes/sec)

Statistici pe noduri Atribute controlate Client email Client ftp Download file size(bytes),Download response

time(sec),Upload Response time(sec),Upload file size(bytes),Traffic sent(packets/sec),Traffic sent(bytes/sec),Traffic received(packets/sec),Traffic received(bytes/sec)

Client http Downloaded object,Downloaded pages,Object response time,Page response time,User cancelled connections,Traffic sens(packets/sec),Traffic sent(bytes/sec),Traffic received(packets/sec),Traffic received(bytes/sec)

Server email Server ftp Load(request/sec),Load(session/sec),Traffic

sent(packets/sec),Traffic sent(bytes/sec),Traffic received(packets/sec),Traffic received(bytes/sec),Task processing time

Server http Load(request/sec),Load(session/sec),Traffic

sent(packets/sec),Traffic sent(bytes/sec),Traffic received(packets/sec),Traffic received(bytes/sec),Task processing time

5.4.Se analizează următoarele rezultate:

Statistici globale

Atribute \ Aplicatie Valori medii

Email FTP HTTP

Traffic Sent (bytes/sec) 150 150Traffic Sent (packets/sec) 0.0155 0.20Traffic Received (bytes/sec) 150 150Traffic Received (packets/sec)

0.006 0.20

Download Response Time (sec)

0.20

Upload Response Time (sec)

0.205

Page Response Time (sec) 0.055

Statistici pe nod la nivel de Server

Atribute \ Aplicatie Valori medii

Email FTP HTTP

Traffic Sent (bytes/sec) 50 55Traffic Sent (packets/sec) 0.0075 0.045Traffic Received (bytes/sec) 30 17Traffic Received (packets/sec) 0.0016 0.045TCP Load (bytes/sec) Traffic Received (bytes/sec) UDP Traffic Sent (bytes/sec) Traffic Received (bytes/sec)

11050

Statistici pe nod la nivel de Client

Atribute \ Aplicatie Valori medii

Email FTP HTTP

Client Traffic Sent (bytes/sec) Traffic Received (bytes/sec)

7585

35,6120

TCP Load (bytes/sec) Traffic Received (bytes/sec)

7085

35120

UDP Traffic Sent (bytes/sec) Traffic Received (bytes/sec) Traffic Received (packets/sec) 0.0031 0.1

Download Response Time (sec) 0.205Upload Response Time (sec) 0.205Page Response Time (sec) 0.055

\ Atribute Link

Utilization Throughput(bits/s)

Queuing delay

← → ← → ← →Client 1- Switch 0.000006 0.6 0.000058Client 2- Switch 0.0106 0.0041 1.072 410 0.00018 0.000625Client 3- Switch 0.0075 0.00625 750 625 0.0006 0.0006Switch - Ftp_Http_server 0.0095 0.00475 910 500 0.00066 0.00026Switch - Email _server 0.0085 0.006 840 560 0.000625 0.00029