Virtual Content Delivery Network (vCDN) migration is necessary to optimize
the use of resources and improve the performance of the overall SDN/NFV-based
CDN function in terms of network operator cost reduction and high streaming
quality. It requires intelligent and enticed joint SDN/NFV migration algorithms
due to the evident huge amount of traffic to be delivered to end customers of
the network. In this paper, two approaches for finding the optimal and near
optimal path placement(s) and vCDN migration(s) are proposed (OPAC and HPAC).
Moreover, several scenarios are considered to quantify the OPAC and HPAC
behaviors and to compare their efficiency in terms of migration cost, migration
time, vCDN replication number, and other cost factors. Then, they are
implemented and evaluated under different network scales. Finally, the proposed
algorithms are integrated in an SDN/NFV framework. Index Terms: vCDN; SDN/NFV
Optimization; Migration Algorithms; Scalability Algorithms.Comment: 9 pages, 11 figures, 4 tableaux, conference Local Computer Networks
(LCN), class
