Research On Testing Techniques Of OSPFv3 And Its Test Suites Defination

With increase in IPv6-based products, it is becoming more and more important to decide whether or not an implementation conforms to relevant protocol so as to ensure interoperability between implementation of the same protocol.The background of the work presented in the dissertation is the activity in research and system development pertainent to Concurrent Multi-Port Test (CMPT) at Sichuan Network Communication Key Laboratory (SC Netcom Lab). The distributed CMPT system under development at SC-Netcom Lab takes a two-layer architecture; where the upper layer is responsible for system configuration, test assignment, test process coordination and management, while the lower layer handles two-port test control issues. In this dissertation, an emphasis has been given to test definition issues with regard to the routing protocol - OSPF.For different test purposes, three OSPF test-suites have been defined for conformance test, performance test, and interoperability test respectively. In the author' s work, conformance test suite is comparatively complete and represented by four test groups: "hello" , "neighbor discovery" , " link state database", and "routing calculation" . A test group consists of a number of test cases, which may in turn be grouped into sub-groups depending on test purposes and functional distinctions.Test case specification is very important in test preparation, yet involves large amount of tedious work. For example, the number of test cases in OSPF conformance test-suite so far defined by the author has reached nearly one hundred. In the author' s work, test cases are specified in a semi-formal test specification language called the TTCN-3. The experience gained in specification of test suite of OSPF, the inadequacy of TTCN-3 in handling concurrent multi-port testing has been experienced and resulted in an enhancement to TTCN-3 in definition of the Concurrent Multi-port Test Definition Language (CMP-TDL).