Performance evaluation of time-aware enhanced software defined networking (TeSDN) for elastic data center optical...

Area of Science:

• Optical networking
• Data center interconnection
• Software-defined networking

Background:

• Elastic optical networks (EONs) are crucial for high-bandwidth data center services.
• Previous work established enhanced software-defined networking (SDN) for EONs in data centers.
• Current limitations include managing time-sensitive services and optimizing resources across application and network layers.

Purpose of the Study:

• To propose a novel time-aware enhanced software-defined networking (TeSDN) architecture.
• To introduce a time-aware resource scheduling (TaRS) scheme for elastic data center optical interconnection.
• To enhance cross-stratum optimization considering spectrum, application, and time elasticity for Quality of Service (QoS).

Main Methods:

• Development of the TeSDN architecture incorporating the TaRS scheme.
• Experimental verification of feasibility and efficiency on an OpenFlow-based testbed.
• Quantitative performance evaluation of the TaRS scheme under heavy traffic load.

Main Results:

• The TeSDN architecture successfully accommodates data center services with required QoS, considering time dimensionality.
• Cross-stratum optimization is enhanced by leveraging spectrum, application, and time elasticity.
• Experimental results validate the feasibility and efficiency of the proposed TeSDN architecture.

Conclusions:

• The proposed TeSDN architecture with the TaRS scheme effectively addresses time-aware service scheduling in elastic optical networks.
• The architecture enhances resource utilization and QoS for data center interconnections.
• The study demonstrates significant improvements in managing time-sensitive, high-bandwidth data center services.