Traditionally, ofdatapath was the component that did the data path forwarding. It was plumbed with data plane interfaces and received and forwarded packets.
ofprotocol was the component that managed the connection to the openflow controller. As directives that updated the forwarding data path tables were received by ofprotocol, they were forwarded to ofdatapath; in the case where ofdatapath is/was a kernel module, this was done with a netlink socket pretty much just forwarding the appropriate OpenFlow messages across the link. Shameless plug: The Indigo-2 architecture uses a simliar functional decomposition, but between the connection management functionality (OFConnectionManager) and the forwarding component, it defines the OFStateManager. An API is defined between OFStateManager and Forwarding which is closer to an object model (it's in C). The OFStateManager provides database-like query functionality for the flow table which has different optimization criteria than the requirements that come from the forwarding component (either fast packet lookups for a virtual switch, or ASIC specific hardware table management mechanisms for a physical switch). -Dan On Sat, May 4, 2013 at 12:44 PM, Shabbir Ahmed <shabbir1...@gmail.com>wrote: > Hi, > > I want to know wat these two daemons do, > > ofdatapath > ofprotocol > > I asume ofdatapath is the forwarding plane of openflow protocol and > listens on tcp:6634 > > ofprotcol is teh control plane of the control which could be local or > remote port, > > now on openwrt i must have ofdatapath be running all the time and it > should conect to ofprotocol on port 6633 either local or global. > > my openwrt is not running ofdatapath. > > thanks > > _______________________________________________ > openflow-discuss mailing list > openflow-discuss@lists.stanford.edu > https://mailman.stanford.edu/mailman/listinfo/openflow-discuss > >
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