Hi, The control plane for the OF switch is running in the controller. The OF switch will proxy control-plane packets between the controller and the non-OpenFlow switches (via packet-in, packet-out OF messages). The controller software understands the routing exchange, and installs OF flows to the switch accordingly.
Check out e.g., https://sites.google.com/site/routeflow/ Regards, Zoltan From: openflow-discuss-boun...@lists.stanford.edu [mailto:openflow-discuss-boun...@lists.stanford.edu] On Behalf Of wangan1...@sina.com Sent: Thursday, April 18, 2013 9:45 PM To: openflow-discuss Subject: [openflow-discuss] help Hi, all I have a question about the openflow protocol. I have read the specification but I am wondering how a traditional switch communicate with a switch that only supports openflow protocol. Because I didn't see any mechanism to deal with routing table information exchanges. Do I miss something? I'd really appreciate your help! An
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