A cluster-based router is a new router architecture that is composed of a cluster of commodity processing nodes interconnected by a high-speed and low-latency network. It inherits packet processing extensibility from the software router, and forwarding performance scalability from clustering.
In this thesis, we describe a prototype cluster-based router, including the design of the cluster-based router architecture and the addressing of critical issues such as the design of a highly efficient communication layer, reduction of operating system overheads, buffer recycling and packet packing. By experimental evaluation, we expose its forwarding capacity scalability and latency variance. We also evaluate and analyze the potential hardware bottlenecks of its commodity processing nodes, and present the correlation between the reception and transmission capabilities of an individual port as well as ports on the same bus. We propose an adaptive scheduling mechanism based on system state information to manage the adverse effect of this correlation on the router performance.
We also investigate internal congestion in the cluster-based router. To manage the internal congestion, we propose two backward explicit congestion notification schemes: a novel queue scheduling method and an optimal utility-based scheme. We show the effectiveness of these schemes either by ns-3 simulation, experimental evaluation, or both. We also analyze the stability of the optimal utility-based BECN internal congestion control scheme through theoretical proof, simulation and experimental evaluation.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:AEU.10048/1182 |
| Date | 11 1900 |
| Creators | Ye, Qinghua |
| Contributors | MacGregor, Mike H.(Computing Science), Lu, Paul(Computing Science), Elliott, Duncan(Electrical and Computer Engineering), Yuan, Liyan(Computing Science), Yeung, Kwan L.(Electrical and Electronic Engineering) |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 4083936 bytes, application/pdf |
| Relation | "Cluster-based IP Router: Implementation and Evaluation", IEEE International Conference on Cluster Computing, Barcelona, Spain, September 25th-28th, 2006, "Hardware Bottleneck Evaluation and Analysis of A Software PC-based Router", International Symposium on Performance Evaluation of Computer and Telecommunication Systems, Edinburgh, UK, June 16th-18th, 2008, "Adaptive Scheduling to Maximize NIC Throughput Despite Correlated Transmission and Reception Capabilities", ACM/IEEE Symposium on Architectures for Networking and Communications Systems, San Jose, California, USA, November 6-7, 2008, "Internal Congestion Control in a Cluster-based Router", IEEE International Conference on High Performance Switching and Routing, Shanghai, China, May 14th-17th, 2008 |
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