Performanse virtualnih lokalnih mreža u softverski upravljanim mrežama

undergraduate thesis

• Title (english): Performance of VLANs in software defined networks
• Author: Mateo Červar
• Mentor: Željko Ilić (mentor)
• Committee member: Željko Ilić (predsjednik povjerenstva)
• Committee member: Matija Džanko (član povjerenstva)
• Committee member: Matija Šulc (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2015-09-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Computing
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Zadatak ovog rada je bilo pobliže objasniti što su programski upravljane mreže, što su virtualne lokalne mreže, te kakve su performance virtualnih lokalnih mreža u usporedbi s “običnim” lokalnim mrežama. Govorio sam kako programski upravljane mreže (Software Defined Networks) nastoje postaviti programsko upravljanje u centar pozornosti, za razliku od sadašnjih mreža kojima su centar fizički uređaji. Sama mrežna arhitektura sastoji se od tri sloja : fizičkog, upravljačkog te aplikacijskog sloja. Neki od glavnih razloga zašto bi se koristile programski upravljane mreže su: mogućnost programiranja po potrebi, mogućnost kontrole cijele mreže s jednog mjesta, te kvalitetnija i sigurnija usluga. Uz SDN je razvijen i poseban protokol pod imenom OpenFlow. Cilj ovog “koncepta” jest pojednostavljenje mreža i uređaja, te olakšati posao programerima koji nadziru i održavaju te mreže. Jedna od velikih pogodnosti programski upravljanih mreža su Virtualne lokalne mreže. Za njih možemo reći da su grupa mrežnih uređaja koji se nalaze logički unutar iste domene razašiljanja, što znači da uređaji unutar istog VLAN-a mogu biti fizički udaljeni. VLAN logički dijeli mrežu u različite domene razašiljanja tako da se paketi razmjenjuju između vrata koji su postavljeni za isti VLAN. Paketi koji se šalju se označuju u komutatorima oznakom pripadnosti za određenu mrežu za koju su namjenjeni. Glavne pogodnosti su podjela domene razašiljanja bez potrebe za uređajima transportnog sloja poput usmjeritelja, preko sučelja je jednostavno grupirati korisnike mreže po funkcijama, odnosno, po određenim uvjetima, te pravilno dodjeljivati prava na resurse te mogućnost namještanja vrata logički, bez potreba za fizičkim promjenama tj. olakšano dodavanje, promjena i brisanje korisnika u mreži. Također, kroz rad je objašnjeno kako postaviti sve potrebne programe i okolinu, topologije, itd., kako bi svatko tko čita ovaj rad bio u stanju ponoviti testiranja i osobno se uvjeriti u poboljšanja performansi VLAN u odnosu na obične lokalne mreže.

Abstract (english)

The main goal of this work was to determine what the software defined networks and virtual local networks are, and more importantly to test performance of virtual local networks compared to “ordinary” local networks. It is stated that software defined networks put software management in the centre of attention, unlike the standard networks which centre around physical devices. The network architecture consists of three layers: physical, control and application layer. Some of the main reasons why SDN should be used are: the possibility of programming if necessary, the ability to control the whole network from a single location and better and safer services. Along with the SDN, a special protocol named OpenFlow has been created. It is used for controlling the data stream. The aim of this concept is to simplify networks and devices, and to facilitate the work of developers who monitor and maintain these networks. One of the great benefits of the program controlled networks is virtual local area networks. It can be said that they are a group of network devices that are logically within the same multicast domain, this means that devices within the same VLAN can be physically remote. The VLAN are logically divided into different network broadcast domains so that packages are exchanged between ports that are set to the same VLAN. Packages sent to the switches are labelled as belonging to a particular network for which they are intended. The main benefits are: the division of broadcast domains without the need for devices such as the transport layer routers, it is easier to group network users by their purpose through the interface, i.e., under certain conditions, and properly assign rights to resources and the possibility of setting a logical gate without the need for physical changes ,i.e. It is an easier way to add,delete or modify users in the network. Also, the work explains how to set up all the necessary software and environment,topology,etc., so that anyone reading the paper would be able to repeat the test and assure himself of performance improvements of VLAN in relation to the ordinary local area network.

• Keywords: Programsko upravljane mreže; Virtualne lokalne mreže; Openflow protokol; Mininet; VLAN
• Keywords (english): Software Defined Networks; VLAN; Virtual local area network; Openflow protocol; Mininet
• Language: croatian
• URN:NBN: urn:nbn:hr:168:829210
• Study programme: Title: Computing; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka računarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 08:17:21