  5G network slicing is essential to providing flexible, scalable and on-demand
solutions for the vast array of applications in 5G networks. Two key challenges
of 5G network slicing are function isolation (intra-slice) and guaranteeing
end-to-end delay for a slice. In this paper, we address the question of optimal
allocation of a slice in 5G core networks by tackling these two challenges. We
adopt and extend the work by D. Dietrich [1] to create a model that satisfies
constraints on end-to-end delay as well as isolation between components of a
slice for reliability.
