ReversePTP: A clock synchronization scheme for software-defined networks
| Autor: | Tal Mizrahi, Yoram Moses |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Computer Networks and Communications
business.industry Computer science 020206 networking & telecommunications 02 engineering and technology Clock synchronization Computer Science Applications Software Control theory Scalability 0202 electrical engineering electronic engineering information engineering State (computer science) Software-defined networking Programmer business Precision Time Protocol Computer network |
| Zdroj: | International Journal of Network Management. 26:355-372 |
| ISSN: | 1055-7148 |
| DOI: | 10.1002/nem.1942 |
| Popis: | We introduce REVERSEPTP, a clock synchronization scheme for software-defined networks SDNs. REVERSEPTPi¾?is based on the Precision Time Protocol PTP, but is conceptually reversed; in REVERSEPTP, all nodes switches in the network distribute timing information to a single software-based central node the SDN controller, which tracks the state of all the clocks in the network. Hence, all computations and bookkeeping are performed by the central node, whereas the 'dumb' switches are only required to periodically send it their current time. In accordance with the SDN paradigm, the 'brain' is implemented in software, making REVERSEPTP flexible and programmable from an SDN programmer's perspective. We present the REVERSEPTPi¾?architecture and discuss how it can be used in typical SDN architectures. Our experimental evaluation of a network with 34 REVERSEPTP-enabled nodes demonstrates the effectiveness and scalability of using REVERSEPTP. Copyright © 2016 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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