Hello, Wes, I am talking about the observed flow setup rate in real production network. Thanks for your explanation. You are definitely right. It depends on the way of deploying flow entries, i.e. proactive or reactive. I am not sure what is the current best practice in industrial, proactive, reactive or a hybrid solution? I do find some research papers talking about the flow setup rate:
http://www.deutsche-telekom-laboratories.de/~robert/flowvisor-osdi10.pdf http://www.cmlab.csie.ntu.edu.tw/~kenneth/qing2011/paper/6.pdf >From these old research papers, I can see the flow setup rate they can achieve is about 200-300 flows/sec. The bottleneck is the bandwidth between controller and openflow switches. However, there are no reports from industrial to discuss what the real flow setup rate they need... Can 200-300 flows/sec be enough to support a small datacenter network? Thanks, Mingchen On Tue, Sep 24, 2013 at 2:41 PM, Wes Felter <w...@felter.org> wrote: > On 9/23/13 5:42 PM, Ming-Chen Zhao wrote: > > I am wondering if there are any papers or documents mentioned the >> measurement data about flow setup rate in production network. >> > > I'm not sure whether you're asking about the maximum possible flow setup > rate or the observed flow setup rate. The observed flow setup rate will > depend on what the controller is doing; for example a network with > proactive destination-based forwarding would have almost no flow setups. > Until a switch fails and there will be a burst of 1,000 flow mods per > second. > > -- > Wes Felter > IBM Research - Austin > > ______________________________**_________________ > openflow-discuss mailing list > openflow-discuss@lists.**stanford.edu<openflow-discuss@lists.stanford.edu> > https://mailman.stanford.edu/**mailman/listinfo/openflow-**discuss<https://mailman.stanford.edu/mailman/listinfo/openflow-discuss> > -- Mingchen Zhao Ph.D. Candidate, Computer and Information Science Program (CIS) School of Engineering and Applied Science (SEAS) E-mail: miz...@seas.upenn.edu
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