Analysing Impact of Seamless MPLS on QoS
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Date
2018-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
AAU
Abstract
The need for timely delivery of real time and mission-critical applications has led to a high demand
for end-to-end QoS guarantees. Service providers, including Ethio telecom, have deployed
mobile backhaul in addition to IP core network with separate MPLS domains for each
network. Internal network topology of one domain and its policy implementations are proprietary
information
and
inter-domain
routing
must
be
done
without
detailed
knowledge
of
the
entire
network
topology,
policies
and
performance
of
the
other
domains.
Lacks
of
global
coordination
between policies used in different domains, limitations of BGP for implementing end-toend
QoS in inter-domain routing and its slow convergence during network failure are major
challenges of the current inter-domain routing architecture.
As stated by different authors such as in RFC 8277 (Using BGP to Bind MPLS Labels to Address
Prefixes), Seamless MPLS provides framework for taking MPLS end-to-end in a scalable fashion,
extending benefits of traffic engineering (TE) and guaranteed service-level agreements
(SLAs) with deterministic network resiliency. It offers an alternative for implementing end-toend
MPLS
networks
by integrating
different
domains
into
a
single
MPLS
domain.
The motivation of this thesis is to investigate and analyze impacts of implementing Seamless
MPLS on QoS parameters. The impact on QoS parameters is analyzed by using two scenarios;
MPLS with multiple domains and Seamless MPLS integrating three domains in to single MPLS
domain. Simulation tools such as eNSP, Ostinato, NQA and MATLAB are used to compare performances
of
the
two
scenarios.
The
analysis
results
show
that
in
Seamless
MPLS
throughput
is
improved
by
36.87%,
latency
is
improved
by
15.98%,
packet
loss
is
improved
by
20%
and
jitter
is
improved
by
12.5%
compared
to
MPLS.
From
the
results
one
can
understand
that
any
service
provider can benefit from deploying Seamless MPLS.
Description
Keywords
IP, MPLS, Seamless MPLS, QoS, MPLS domain, AS, Analysis, Performance