Abstract
Traditional SDN has one controller, but more recent SDN approaches use multiple controllers on one network. However, the multiple controllers need to be synchronized with each other in order to guarantee a consistent network view, and complicated control management and additional control overhead are required. To overcome these limitations, Kandoo [5] has been proposed in which a root controller manages multiple unsynchronized local controllers. However, in this approach, loops can form between the local controllers because they manage different topologies. We propose a method for modeling a hierarchical design to detect loops in the topology and prevent them from occurring using UPPAAL model checker. In addition, the properties of multiple controllers are defined and verified based UPPAAL framework. In particular, we verify the following properties in a multiple controller: (1) elephant flows go through the root controller, (2) all flows go through the switch that is required to maintain security, and (3) they avoid unnecessary switches for energy efficiency.
Original language | English |
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Title of host publication | Testbeds and Research Infrastructures for the Development of Networks and Communications - 14th EAI International Conference, TridentCom 2019, Proceedings |
Editors | Honghao Gao, Kuang Li, Xiaoxian Yang, Yuyu Yin |
Publisher | Springer |
Pages | 81-94 |
Number of pages | 14 |
ISBN (Print) | 9783030432140 |
DOIs | |
Publication status | Published - 2020 |
Event | 14th EAI International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communications, TridentCom 2019 - Changsha, China Duration: 2019 Dec 7 → 2019 Dec 8 |
Publication series
Name | Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST |
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Volume | 309 LNICST |
ISSN (Print) | 1867-8211 |
Conference
Conference | 14th EAI International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communications, TridentCom 2019 |
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Country/Territory | China |
City | Changsha |
Period | 19/12/7 → 19/12/8 |
Bibliographical note
Publisher Copyright:© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. 2020.
Keywords
- Formal modeling
- Formal verification
- SDN
- UPPAAL
ASJC Scopus subject areas
- Computer Networks and Communications