Experimental performance evaluation of software defined networking (SDN) based data communication networks for large...

Area of Science:

• Information and Communication Technology
• Optical Networking
• Network Engineering

Background:

• Software-Defined Networking (SDN) provides flexibility and programmability, making it suitable for various network applications.
• SDN is being adopted for Data Communication Networks (DCN) in optical transport, replacing traditional Multi-Protocol Label Switching (GMPLS).
• The performance of SDN-based DCN in large-scale optical networks requires practical evaluation for future deployment decisions.

Purpose of the Study:

• To evaluate the practical performance of SDN-based DCN in a large-scale optical network.
• To assess key performance metrics including network scalability, DCN bandwidth limitations, and restoration times.
• To provide empirical data supporting the adoption of SDN in future optical network infrastructure.

Main Methods:

• Construction of a large-scale flexi-grid optical network testbed with 1000 virtual optical transport nodes.
• Performance evaluation under various network conditions, including different traffic loads and DCN bandwidths.
• Measurement of network parameters such as blocking probability, bandwidth utilization, lightpath provisioning time, and failure restoration time.

Main Results:

• Demonstrated the performance of SDN-based DCN in a large-scale optical network testbed.
• Quantified network scalability, DCN bandwidth limitations, and restoration capabilities.
• Provided insights into blocking probability, bandwidth utilization, and provisioning/restoration times under diverse scenarios.

Conclusions:

• The study validates the performance of SDN-based DCN in large-scale optical networks.
• Findings support SDN as a viable technology for future optical network deployments.
• The demonstrated performance metrics offer crucial data for technology selection and network planning.