On vNF SC deployment and task scheduling for bulk data transfers in inter DC EONs
We study how to deploy vNF service chains (vNF SCs) and perform task scheduling for bulk data transfers in inter datacenter (inter DC) elastic optical networks (EONs) We call this type of request a data intensive vNF SC request. According to the number of required vNF SCs, the data intensive vNF SC requests are classified into linear and multi branch data intensive vNF SC requests. For linear data intensive vNF SC requests, we propose a dynamic programming based vNF SC deployment and task scheduling algorithm to minimize the average service completion time (SCT) For multi branch data intensive vNF SC requests, we propose a correlation aware vNF SC deployment and task scheduling algorithm to minimize the average SCT, since there are multiple vNF SC branches that are correlated and the SCT of a multi branch data intensive vNF SC request is determined by the SCT of the latest vNF SC branch. Simulation results verify that our algorithms can reduce the average SCTs of data intensive vNF SC requests of the two types effectively.
2017 IEEE/CIC International Conference on Communications in China (ICCC)