NDLI: DevoFlow: scaling flow management for high-performance networks

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DevoFlow: scaling flow management for high-performance networks

Content Provider	ACM Digital Library
Author	Banerjee, Sujata Tourrilhes, Jean Sharma, Puneet Curtis, Andrew R. Yalagandula, Praveen Mogul, Jeffrey C.
Abstract	OpenFlow is a great concept, but its original design imposes excessive overheads. It can simplify network and traffic management in enterprise and data center environments, because it enables flow-level control over Ethernet switching and provides global visibility of the flows in the network. However, such fine-grained control and visibility comes with costs: the switch-implementation costs of involving the switch's control-plane too often and the distributed-system costs of involving the OpenFlow controller too frequently, both on flow setups and especially for statistics-gathering. In this paper, we analyze these overheads, and show that OpenFlow's current design cannot meet the needs of high-performance networks. We design and evaluate DevoFlow, a modification of the OpenFlow model which gently breaks the coupling between control and global visibility, in a way that maintains a useful amount of visibility without imposing unnecessary costs. We evaluate DevoFlow through simulations, and find that it can load-balance data center traffic as well as fine-grained solutions, without as much overhead: DevoFlow uses 10--53 times fewer flow table entries at an average switch, and uses 10--42 times fewer control messages.
Starting Page	254
Ending Page	265
Page Count	12
File Format	PDF MP4
ISBN	9781450307970
DOI	10.1145/2018436.2018466
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-08-15
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Data center Flow-based networking Switch design
Content Type	Audio Text
Resource Type	Article

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