Design of Test Case for OpenFlow Protocol Conformance Test Based on OFTest

Software Defined Networking has become extremely hot both in academia and industry. Most of the SDN protocol is the OpenFlow protocol in the southbound interface. But bue to different manufacturers may have different understanding to the OpenFlow protocol and lead to the implementation may be different. So OpenFlow protocol conformance testing is becoming more important. This paper first introduces the concept of sdn and the current research situation of openflow protocol conformance testing, and then refer to the open source framework OFTest, use API of OFTest to write test cases for conformance testing. Finally, analyze the relationship between the number of test steps and test time according to the results of the test.