NDLI: SwitchReduce: Reducing switch state and controller involvement in OpenFlow networks

Content Provider	IEEE Xplore Digital Library
Author	Iyer, A.S. Mann, V. Samineni, N.R.
Copyright Year	2013
Description	Author affiliation: IBM Res., Bangalore, India (Iyer, A.S.; Mann, V.) \|\| Indian Inst. of Technol., Guwahati, Guwahati, India (Samineni, N.R.)
Abstract	OpenFlow is a popular network architecture where a logically centralized controller (the control plane) is physically decoupled from all forwarding switches (the data plane). Through this controller, the OpenFlow framework enables flow level granularity in switches thereby providing monitoring and control over each individual flow. Among other things, this architecture comes at the cost of placing significant stress on switch state size and overburdening the controller in various traffic engineering scenarios such as dynamic re-routing of flows. Storing a flow match rule and flow counter at every switch along a flow's path results in many thousands of entries per switch. Dynamic rerouting of a flow, either in an attempt to utilize less congested paths, or as a consequence of virtual machine migration, results in controller intervention at every switch along the old and new paths. In the absence of careful orchestration of flow storage and controller involvement, OpenFlow will be unable to scale to anticipated production data center sizes. In this context, we present SwitchReduce - a system to reduce switch state and controller involvement in OpenFlow networks. SwitchReduce is founded on the observation that the number of flow match rules at any switch should be no more than the set of unique processing actions it has to take on incoming flows. Additionally, the flow counters for every unique flow may be maintained at only one switch in the network. We have implemented SwitchReduce as a NOX controller application. Simulation results with real data center traffic traces reveal that SwitchReduce can reduce flow entries by up to approximately 49% on first hop switches, and up to 99.9% on interior switches, while reducing flow counters by 75% on average.
Starting Page	1
Ending Page	9
File Size	884226
Page Count	9
File Format	PDF
ISBN	9783901882555
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	IFIP
Subject Keyword	Radiation detectors Datacenter networks Ports (Computers) Routing and traffic engineering Switches OpenFlow Routing Hardware Topology New networking architectures
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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