2017•arXiv (Cornell University)Open access
Implementation of Virtual Network Function Chaining through Segment\n Routing in a Linux-based NFV Infrastructure
Ahmed Abdelsalam, François Clad, Clarence Filsfils, Stefano Salsano, Giuseppe Siracusano, Luca Veltri
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Abstract
In this paper, we first introduce the NFV architecture and the use of IPv6\nSegment Routing (SRv6) network programming model to support Service Function\nChaining in a NFV scenario. We describe the concepts of SR-aware and SR-unaware\nVirtual Network Functions (VNFs). The detailed design of a network domain\nsupporting VNF chaining through the SRv6 network programming model is provided.\nThe operations to support SR-aware and SR-unaware VNFs are described at an\narchitectural level and in particular we propose a solution for SR-unaware VNFs\nhosted in a NFV node. The proposed solution has been implemented for a Linux\nbased NFV host and the software is available as Open Source. Finally, a\nmethodology for performance analysis of the implementation of the proposed\nmechanisms is illustrated and preliminary performance results are given.\n
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