Look at RouteFlow (https://sites.google.com/site/routeflow/) for an example of a project that uses OpenFlow to implement IP routing.
Google (http://www.nanog.org/meetings/nanog50/abstracts.php?pt=MTYzNSZuYW5vZzUw&nm=nanog50) and Ericsson (http://www.openflow.org/wk/index.php/OpenFlowMPLS) have projects that implement MPLS in OpenFlow. The OpenFlow 1.0 spec doesn't have support for MPLS so this was done with some workarounds (extensions in Erickson's case, Google's implemented have push and pop functions as virtual ports) With Openflow you have the capability of implementing many of the forwarding and counting functions in OpenFlow. Some switches also support hybrid mode where you have both the native capabilities (L3 routing, L2 switching, possibly even MPLS) of the device plus a OpenFlow on selected ports (or flows with the NORMAL action). The advantage with implementing functions n OpenFlow is that you have the flexibility to alter the software/protocols and combine the function with other applications. Chris Small InCNTRE Indiana University chsm...@indiana.edu On May 27, 2012, at 7:29 AM, sitara...@nmsworks.co.in wrote: > Hi Dave, > Thanks for the response. > Arent we then talking of only switches then, i.e are these Switches L3 > switches, and if so, is it true that the, say, IP routing can(is) also > be brought under centralized control. Have such product being demoed in > industry shows anywhere that brings say IP Routing or perhaps more > likely, MPLS Label Switching under centrailized SDN control? > Thanks again for offering your insights. > Sitaraman > >> There are some specialized switches, such as the ones Google described at >> the recent ONS conference, which have only a boot loader and an OpenFlow >> agent for firmware. Most commercial switches have full switch firmware in >> addition to an OpenFlow agent, and many of them operate in Hybrid Mode, so >> the answer is "yes", all the usual upper layers are present. >> >> Regards, >> >> Dave >> >> David B. Nelson >> Director of Technology >> Elbrys Networks, Inc. >> www.elbrys.com >> +1.603.570.2636 >> >> -- >> This message has been scanned for viruses and >> dangerous content by MailScanner, and is >> believed to be clean. >> >> > > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > _______________________________________________ > openflow-discuss mailing list > openflow-discuss@lists.stanford.edu > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
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