NT-SCDC: Realizing Service Customized Networking in Distributed Clouds With NaaS Ticket

The integration of cloud and networking, especially the distributed clouds is an important trend in the development of the Internet. The connection between cloud and edge in distributed clouds needs to cross the Wide Area Network (WAN). However, the current Internet architecture has an unpredictable quality of service and weak inter-application collaboration, making the cloud and edge not practically integrated. Developing Service Customized Networking (SCN) and moving towards the “Network-as-a-Service (NaaS)” paradigm can organically bridge application-side requirements with network-side capabilities to achieve application-oriented and on-demand interconnection across WANs. Therefore, this paper presents a novel service-oriented architecture called NaaS Tickets-enabled Service Customized Distributed Clouds (NT-SCDC), realizing service customized networking in distributed clouds with NaaS Tickets. The core mechanism of NT-SCDC named NaaS Tickets is introduced to establish trust and anchoring relationships between services and networks. By overlaying an “overlay service layer” on top of the original “underlay carrier layer”, we first propose the architecture of NT-SCDC and design a five-layer model with programmable interfaces for NT-SCDC. Moreover, to fully exploit the best utility of NaaS Tickets, the on-demand matching process with NaaS Tickets and an auction-based matching scheme with combinatorial NaaS Tickets are presented. The performance of the proposed matching scheme is evaluated and the results show that the proposed matching scheme can well achieve resource utilization and satisfy users differentiated customized demands with limited resources.