Improving existing VPN through Software Defined Networking
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Date
2018-11-16
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Journal ISSN
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Publisher
AAU
Abstract
Currently, telecom service providers are using Multi-Protocol Label Switching
(MPLS) technology in their IP core network to provide Virtual Private Network
(VPN) services to their customers. However, most of the current IP core network of
service providers’ network does not have dynamic centralize configuration, provisioning
and management mechanism, and also the network is not scalable enough.
These limitations are caused by the vertical integration of data and control plane
on networking device. In addition, the IP core layers of a service provider networks
have redundancy on their network architecture (e.g. ethiotelecom IP core
layer has five layers), which causes delay in configuration, provisioning and management.
Hence, this thesis work shows how SDN based VPN is better than the
existing VPN of a service provider network by comparing two networks performance
parameters namely throughput and latency. Therefore, the simulation environment
is setup using Linux routers for existing network; and openvswitches
for the Software Defined Network (SDN) network. Finally, the simulation results
for both networks have been presented on the result and discussion section. Based
on the results found, the SDN- VPN throughput is 22.2222% higher than the existing
VPN, and also its latency is 70.4675% lower than the existing VPN one
Description
Keywords
SDN VPN, Throughput, Latency