Besides, in many scenarios/applications the idea of replacing the entire network with a new OpenFlow one is unlikely, which means that your OpenFlow switches will still have to interoperate with non-OpenFlow switches. This is why we decided to develop RouteFlow, a migration path towards SDN.
http://cpqd.github.io/RouteFlow/ https://sites.google.com/site/routeflow/ []s Marcos 2013/5/20 Joel Halpern <joel.halp...@ericsson.com> > I really have to disagree with this view that IGPs will wither away. > > Yes, in the extreme case, when one is using a logically singular > controller (possibly a collection of controller sharing state using a > proprietary mechanism, but appearing as one) to control the entire > autonomous system (enterprise, data center, ...) then yes, you can dispense > with the IGP. > > But, if you expect the solution to scale (to support large data centers, > large enterprises, or autonomous systems the size of those preferred by > many Internet Service providers), then you are going to need multiple > controllers, and those controllers will need to talke to each other. That > is exactly what the existing IGPs are designed for. So I would not forsee > the demise of the IGP. (And, as a side-effect, this gives an easy way to > handle the necessary inter-working with existing routing devices.) > > Yours, > Joel > > > -----Original Message----- > > From: openflow-discuss-boun...@lists.stanford.edu > > [mailto:openflow-discuss-boun...@lists.stanford.edu] On > > Behalf Of Wes Felter > > Sent: Monday, May 20, 2013 12:18 PM > > To: openflow-discuss@lists.stanford.edu > > Subject: Re: [openflow-discuss] SDN & Routing Protocols > > > > On 5/18/13 9:24 PM, Farhad Ibrahim wrote: > > > > > What i specifically want to know is: Will future SDN networks need > > > OSPF/EIGRP? Does SDN in its pure form mean the end of OSPF/EIGRP? > > > > Yeah, with SDN you either don't need any routing protocol at > > all or you can invent a new more "modern" routing protocol > > based on Paxos. > > > > -- > > Wes Felter > > IBM Research - Austin > > > > _______________________________________________ > > openflow-discuss mailing list > > openflow-discuss@lists.stanford.edu > > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss > > > _______________________________________________ > openflow-discuss mailing list > openflow-discuss@lists.stanford.edu > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss > -- Marcos Rogério Salvador, Ph.D. Network Technology Evolution Manager CPqD - Center for Research and Development in Telecommunications Tel +55 19 3705-4562 E-mail: marco...@cpqd.com.br Skype: mr-salvador URL: www.cpqd.com.br
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