Network-resource isolation for virtualization nodes

Two methods for NRI for virtualization networks are proposed in this paper: per-slice shaping and per-link policing. The former enables NRI with 80-90% less queues compared to the per-link shaping. The latter enables less strict isolation between tens or hundreds of slices using only one queue. Evaluations of these methods show that the former performs slightly better in terms of delay and packet-drop ratio. Accordingly, the former with/without policing is effective for delay-sensitive services while the latter may be sufficiently used for the other types of services.