Bandwidth Optimization of IP Core Network Using MPLS Traffic Engineering and Quality of Service: The Case of Ethio Telecom Backbone Network
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Date
2021-10
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Addis Ababa University
Abstract
The rapid growth of the number of different telecom service users, the significant
inventions of services, and web-based applications make the service providers expected
to have a huge number of subscribers. People also show their interest to use the newly
emerging services and applications since these services and applications are making life
easier in day-to-day activities. Consequently, this makes the service providers have an
enormous number of users. Even though it is good to increase the number of subscribers
for the providers, the traffic that is forwarded from these subscribers to the provider’s
network is also vast. As a result, this will make the service provider’s network become
congested. Providers should have to consider their backbone network capacity while
offering the different types of services. The increase in the number of customers without
the timely deployment of the network expansion project will make the network to be
exposed to congestion. Network expansion or deployment of new projects takes high cost
as well as is time-consuming. But before the implementation of new projects, network
bandwidth optimization should be implemented to use the available network resources
effectively and efficiently.
The motivation of this paper is to investigate and analyze the performance and link
bandwidth utilization of the core network by implementing MPLS TE + QoS. The impact
of QoS parameters is being analyzed by using two scenarios; MPLS LDP + BE and MPLS
TE + QoS scenarios. Simulation tools such as GNS3, Ostinato, and PRTG are used to
compare the performance of the two scenarios. The analysis result shows that in MPLS
TE + QoS scenario packet loss is improved by 29%, throughput improved by 17.4%, and
latency improved by 15.3%. From this result, it is highly recommended that service
providers should have to deploy MPLS TE + QoS on their core (backbone) networks,
which makes them more beneficiary.
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Keywords
MPLS, IP, MPLS-TE