All faculty and students are cordially invited to attend the Doctoral Dissertation Proposal for Yuanlong Tan.
Title: “A High-Performance, Reliable and Secure Network Multicast Solution for File-Stream Distribution”
Chair: Brad Campbell (CS)
Advisor: Malathi Veeraraghavan (ECE)
Joanne Bechta Dugan
Hwajung Lee (Radford University)
To transmit data from a single sender to multiple receivers, a network multicast solution requires less bandwidth than unicast. To support wide-area network multicast, specifically IP multicast, several supporting protocols have been standardized and implemented by equipment vendors. However, Internet Service Providers and enterprise network engineers have not enabled IP multicast service due to feasibility and desirability.
Our interest in network multicast was the result of two simultaneous events: an application top-down push for reliable multicast, and a bottom-up technological advance in the form of Software-Defined Networks (SDN). The need for a reliable network multicast solution was identified for an application called Local Data Manager (LDM) that uses unicast reliable connections to distribute scientific file streams reliably to hundreds of receivers. Therefore, our study pursued a high-performance, reliable, secure network-multicast solution using SDN technologies. Our reliable-multicast SDN solution was integrated with the existing LDM (LDM6) to create a new version called LDM7, and tested with feeds (file-streams) from a meteorology data-dissemination project called Internet Data Distribution (IDD).
This proposal describes four research tracks for further understanding the demands of reliable network multicast through experimentation and data analysis, and for improving our reliable-multicast SDN solution and LDM7.
(i) We conduct an in-depth study of LDM7 throughput performance, which explores the factors that impact throughput performance. An analytical study of the measured values was used to create a model characterizing relationships between output metrics such as throughput, and input parameters such as Virtual LAN (VLAN)/sending rate, Round-Trip-Time (RTT), injected packet loss rate, the number of receivers, and IDD feed types.
(ii) We design, implement and evaluate a new architecture for a Dynamic Reliable File-Steam Multicast (DRFSM) service. Specifically, LDM7 was implemented to use DRFSM service, and this version was tested on a multi-domain WAN trial deployment, in which LDM7 servers were deployed at 8 university campuses that are connected via regional Research-and-Education Networks (RENs) and the US-wide Internet2. Interesting new challenges were found in this real-world deployment and testing.
(iii) Addressing these challenges, we propose to conduct an in-depth study with a comprehensive set of experiments and analysis to answer the questions identified from the first two tracks.
(iv) In this final track, we propose modifications to our DRFSM service architecture, protocols, and implementation to improve reliability, security, and operations.