Thesis (MSc)--Stellenbosch University, 2002. / ENGLISH ABSTRACT: The Internet is evolving into a commercial platform requiring enhanced protocols and an expanded
physical infrastructure allowing a better delivery from IP. Multi-protocol Label Switching (MPLS)
is a technology enabling traffic engineering and virtual private network (VPN) provisioning.
MPLS achieves traffic engineering by carrying the traffic over virtual connections called Label
Switched Paths (LSPs) which are engineered based on QoS requirements such as delay, jitter and
packet loss minimization or throughput maximization.
This thesis proposes path finding and traffic distribution methods to be deployed in MPLS networks
for traffic engineering LSPs. A flow optimization model based on a pre-planned routing approach
separating path finding and traffic distribution is presented. This model is augmented by a
threshold routing approach which routes the traffic based on thresholds expressing the maximum
load level reached by network links. This routing approach moves the traffic away from thresholdmarked
links to achieve low-utilized links/paths. The performance and routing capabilities of
these methods are evaluated through designed software. A routing architecture implementing a
two-layer signalling model for MPLS network is proposed and evaluated through simulation.
v / AFRIKAANSE OPSOMMING:Die verandering van die Internet in 'n kommersiele platform met verbeterde protokolle en 'n
uitgebreide fisieke infrastruktuur stel die internetprotokol (IP) in staat tot beter lewering. Multiprotokol-
etiketskakeling (MPLS), is 'n tegnologie vir die voorsiening van televerkeerbeheer en
virtuele privaatnetwerke (VPN). MPLS verskaf televerkeerbeheer deur die verkeer te dra oar
virtuele konneksies, wat bekend staan as etiketgeskakelde paaie, waarvan die ontwerp gebaseer
is op vereistes vir diensgehalte soos vertraging, ritteling en die minimering van pakketverlies of
maksimering van deurvoer.
Hierdie tesis stel nuwe padvind- en verkeerdistribusiemetodes voor wat aangewend word in MPLSnetwerke
om etiketgeskakelde paaie te beheer. 'n Model vir vloei-optimering-gebaseer op voorafbeplande
roetering wat padvinding en verkeerdistribusie skei-word aangebied. Hierdie model
word uitgebrei deur 'n benadering van drempelroetering wat die verkeer roeteer en gebaseer is op
drempels wat die maksimum ladingsvlak voorstel wat bereik kan word deur netwerkskakels. Hierdie
roeteringsbenadering skuif die verkeer weg van drempelgemerkte skakels en bereik daardeur
laaggebruikte skakelsjpaaie. Die prestasie en roeteringsvaardigheid van hierdie metodes word
gevalueer deur selfontwikkelde programmatuur. 'n Argitektuur vir roetering wat 'n dubbellaagseinmodel
implementeer vir 'n MPLS-netwerk, word aangebied en gevalueer met simulasie.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/53196 |
| Date | 03 1900 |
| Creators | Bagula, Bigomokero Antoine |
| Contributors | Krzesinski, A. E., Stellenbosch University. Faculty of Science. Dept. of Mathematical Sciences. Computer Science. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | Unknown |
| Type | Thesis |
| Format | 111 p. |
| Rights | Stellenbosch University |
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