Conformance Test Studay Of Border Gateway Protocol BGP4+ And The Implementation Of Distributed Test System

With the development of Internet, an effective and steady routing protocol will be an important factor to ensure performance of network. At present, the routing protocol among domains is Border Gateway Protocol version 4. In future IPv6 network, the routing protocol among domains will be the extension of BGP4 oriented to IPv6, BGP4+. BGP4+ has been attached importance to by many manufacturers who are engaged in routing devices and software. Different manufacturers have different products because of different understanding standard. Therefore, it is a very important work to test the BGP4+ routing products supplied by different manufacturers in order to verify whether BGP4+ protocol implementation conforms to the protocol specification.Protocol conformance testing work includes two main aspects: Protocol Conformance Test System Development and Protocol Test Suite Generation. Our research work can be divided into two parts. In the first part, we design and develop a protocol conformance test system which can support the testing of BGP4+ protocol implementations. The conformance test system based on Windows OS can run standard test suites described by XML. In the second part, the standard test suite is generated. After studying and practicing the BGP4+ thoroughly, we use both Petri net and informal methods to generate the conformance test suite of BGP4+ protocol. Based on Petri net model ,we combine control and data flow to research automatic test case generation.To the characters of BGP4+, we design a template of test suite based on. XML and use it to describe BGP4+ protocol conformance test suite which can be used to actual test work. Furthermore, under the environment of BGP4+ experiment network, we run the test suite on our protocol conformance test system to perform test activities towards BGP4+ routing software and get determinate conclusion.