On Wed, Jun 15, 2016 at 8:31 PM, Ca By <cb.li...@gmail.com> wrote: > On Wednesday, June 15, 2016, Eric Kuhnke <eric.kuh...@gmail.com> wrote: > > > a lot of PR fluff, but this may be of interest: > > > > > > > http://www.wired.com/2016/06/barefoot-networks-new-chips-will-transform-tech-industry/ > > > > > > > https://barefootnetworks.com/media/white_papers/Barefoot-Worlds-Fastest-Most-Programmable-Networks.pdf > > > > > > Based on their investors, could have interesting results for much lower > > cost 100GbE whitebox switches. > > > > Where is the price tag? Why would you think it is inexpensive? > > I do think p4 is very interesting, but is it really much different from > openflow?
Great question! OpenFlow enabled decoupling of the control plane from the data plane, whereas P4 allows you to define the data plane. Check out this popular P4 program that defines the data plane of a L2/L3 switch - https://github.com/p4lang/switch/tree/master/p4src OpenFlow is a protocol, whereas P4 is a programming language. You can use OpenFlow controller to control a P4 data plane - Check out this OpenFlow agent on top of a P4 data plane - https://github.com/p4lang/p4ofagent Check out this blog post which explains the differences between P4 and OpenFlow quite well - http://p4.org/p4/clarifying-the-differences-between-p4-and-openflow/ More questions? Shoot me an email :-) Which...umm ... Did not succeed in the market. >
