10.1109/CloudNet.2014.6968961
Dräxler, Sevil
Sevil
Dräxler
Keller, Matthias
Matthias
Keller
Karl, Holger
Holger
Karl
Specifying and Placing Chains of Virtual Network Functions
2014
2017-10-17T12:42:02Z
2019-01-03T13:14:41Z
conference
https://ris.uni-paderborn.de/record/360
https://ris.uni-paderborn.de/record/360.json
3601
422019 bytes
application/pdf
Network appliances perform different functions on network flows and constitute an important part of an operator’s network. Normally, a set of chained network functions process network flows. Following the trend of virtualization of networks, virtualization of the network functions has also become a topic of interest. We define a model for formalizing the chaining of network functions using a context-free language. We process deployment requests and construct virtual network function graphs that can be mapped to the network. We describe the mapping as a Mixed Integer Quadratically Constrained Program (MIQCP) for finding the placement of the network functions and chaining them together considering the limited network resources and requirements of the functions. We have performed a Pareto set analysis to investigate the possible trade-offs between different optimization objectives.