Dynamic Switch Migration in Distributed Software-Defined Networks to Achieve Controller Load Balance
| Autor: | H. Jonathan Chao, Anwar Walid, Yang Xu, Marco Cello, Gordon Wilfong, Charles H.-P. Wen, Mario Marchese, I-Chih Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Computer Networks and Communications
Computer science Distributed computing load balancing Testbed Blackout 020206 networking & telecommunications 02 engineering and technology Load balancing (computing) Partition (database) distributed controllers Software-defined networking switch migration Load management Scalability 0202 electrical engineering electronic engineering information engineering medicine Process control Electrical and Electronic Engineering medicine.symptom |
| Zdroj: | IEEE Journal on Selected Areas in Communications. 37:515-529 |
| ISSN: | 1558-0008 0733-8716 |
| DOI: | 10.1109/jsac.2019.2894237 |
| Popis: | Multiple distributed controllers have been used in software-defined networks (SDNs) to improve scalability and reliability, where each controller manages one static partition of the network. In this paper, we show that dynamic mapping between switches and controllers can improve efficiency in managing traffic load variations. In particular, we propose balanced controller (BalCon) and BalConPlus, two SDN switch migration schemes to achieve load balance among SDN controllers with small migration cost. BalCon is suitable for the scenarios where the network does not require a serial processing of switch requests. For other scenarios, BalConPlus is more suitable, as it is immune to the switch migration blackout and does not cause any service disruption. Simulations demonstrate that BalCon and BalConPlus significantly reduce the load imbalance among SDN controllers by migrating only a small number of switches with low computation overhead. We also build a prototype testbed based on the open-source SDN framework RYU to verify the practicality and effectiveness of BalCon and BalConPlus. Experiment confirms the results of the simulations. It also shows that BalConPlus is immune to switch migration blackout, an adverse effect in the baseline BalCon. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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