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Publication
Failure simulation in software-defined networks with differential link availability
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Authors
Advisor(s)
Abstract(s)
In Software-Defined Networks (SDN) the placement
of controllers is an important factor for overall network reliability.
Whereas most studies assume that all links have similar link
failure rates/availability, placing controllers taking into account
differences in link availability can yield advantages. This is even
more relevant if the network is designed with a particular subset
of high availability links (a spine). After presenting integer linear
programming formulations to support controller placement
considering differential link availability, we propose a simulation
approach to verify the reliability change due to that placement.
From a simulational study using 2 networks, 30 different link
availability configurations we found a definite advantage in
overall reliability in using the knowledge of high availability
links to place the controllers. However, while there were also
advantages to using certain spines for individual networks, these
advantages were not uniform, and varied according to networks,
the number of controllers placed and link availability ratio.
Further work is suggested to check whether fault patterns may
influence the reliability advantage of individual spines.
Description
Keywords
Controllers Failure analysis Integer programming Software defined networking Software reliability
Citation
Melo, Paulo; Jorge, Luisa; Gomes, Teresa (2021). Failure simulation in software-defined networks with differential link availability. In IEEE 17th International Conference on the Design of Reliable Communication Networks (DRCN). p. 1-6. ISBN 978-1-6654-2234-5