METHOD AND DEVICE FOR ISSUING FLOW ENTRY

摘要

Disclosed are a method and device for issuing flow entries. The method comprises: a controller receives a packet in message transmitted by a source switch; determining a forwarding path according to the packet in message; generating corresponding flow entries respectively for N switches in the forwarding path; except for the source switch, generating corresponding control instructions respectively for N-1 switches in the forwarding path; encapsulating the generated N flow entries and N-1 control instructions into an N-th command packet; transmitting the N-th command packet to the N-th switch. The method or device of the present invention ensures that each switch has a flow entry corresponding to the data to be forwarded, so as to avoid transmission of redundant messages and further avoid occurrence of logical errors, and prevent errors in data forwarding.