2020/04/23 by Ibrahim Tamim, Manar Jammal, Tamim, Ibrahim +5
Computer Science · #Software-Defined Networks and 5G #Software System Performance and Reliability #Network Packet Processing and Optimization
paper · pdf · doi:10.48550/arxiv.2004.11496
The shift towards a completely virtualized networking environment is\ntriggered by the emergence of software defined networking and network function\nvirtualization (NFV). Network service providers have unlocked immense\ncapabilities by these technologies, which have enabled them to dynamically\nadapt to user needs by deploying their network services in real-time through\ngenerating Service Function Chain (SFCs). However, NFV still faces challenges\nthat hinder its full potentials, including availability guarantees, network\nsecurity, and other performance requirements. For this reason, the deployment\nof NFV applications remains critical as it should meet different service level\nagreements while insuring the security of the virtualized functions. In this\npaper, we tackle the challenge of securing these SFCs by introducing virtual\nsecurity functions (VSFs) into the latencyaware deployment of NFV applications.\nThis work insures the optimal placement of the SFC components including the\nsecurity functions while considering the performance constraints and the VSFs'\noperational rules such as, functions' alliance, proximity, and anti-affinity.\nThis paper develops a mixed integer linear programming model to optimally place\nall the requested SFCs while satisfying the above constraints and minimizing\nthe latency of every SFC and the intercommunication delay between the SFC\ncomponents. The simulations are evaluated against a greedy algorithm on the\nvirtualized Evolved Packet Core use case and have shown promising results in\nmaintaining the security rules while achieving minimum delays.\n