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
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