METHOD AND DEVICE FOR ISSUING FLOW ENTRY

摘要

The present invention discloses a flow entry delivery method and apparatus. The method includes: receiving, by a controller, a packet-in message sent by a source switch; determining a forwarding path according to the packet-in message; generating a corresponding flow entry for each of N switches in the forwarding path separately; generating a corresponding control instruction for each of other N-1 switches except the source switch in the forwarding path separately; encapsulating the generated N flow entries and N-1 control instructions into the N th command packet; and sending the N th command packet to the N th switch. The method or apparatus of the present invention ensures that each switch has a flow entry corresponding to to-be-forwarded data when the to-be-forwarded data is forwarded, thereby avoiding sending of a redundant message, even avoiding a logic error, and preventing an error in a data forwarding process.