Transmission method for testing computer network protocol
A computer network and protocol testing technology, applied in transmission monitoring, transmission systems, digital transmission systems, etc., can solve the problems of inability to be independent, universal, cost a lot of energy, and non-existent.
Active Publication Date: 2004-10-27
冲石通信技术(北京)有限公司
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Problems solved by technology
In the current conformance test, due to the diversity of the system where the protocol under test is implemented, the test set design must first consider the type of the underlying protocol implemented by the protocol under test and the type of the underlying protocol that the test system can support, that is, the test set is designed too much Considering the lower layer transmission problem during the test, it cannot be independent and universal. For example, the test set developed for the network layer protocol (IP) running on the Ethernet cannot be tested for the protocol implementation running on the point-to-point link PPP. Testing; in addition, the concurrent testing capability of the existing testing system has a great relationship with the configuration of the system where it is located. It takes considerable effort to configure transmission-related things before testing, such as configuring the Point of Control and Observation (PCO) , upper and lower layer protocol type, address, etc.
That is to say, the test set written for a certain protocol can only be used to test the implementation of the protocol running on a certain type of lower layer protocol, and the test system can generally only be installed on a specific system for a specific protocol. Because of this, although the tree and tabular combined notation (TTCN) is the test set description language recommended by ISO / IEC9646, there is currently no general TTCN compiler executor
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[0022] According to the Internet protocol TCP / IP point of view, computer network protocols are divided into four layers: application layer, transport layer, network layer, link / physical layer. From the perspective of protocol testing, if you test network layer protocols (IPv4, IPv6, etc.), you need to construct a network layer network interface object, and its lower layer service provider is the link layer medium; Text transfer protocol http, remote login protocol telnet, routing protocol OSPF, etc.), it is necessary to construct TCP, OSPF and other types of network interface objects, and its underlying service provider is a network layer protocol. The test set design and test system execution should have nothing to do with the underlying protocol type. For example, for the network layer protocol test, the same set of tests should be applied regardless of whether the protocol under test runs on Ethernet, point-to-point link PPP, or asynchronous transfer mode ATM. Both the set ...
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Transmitting / receiving test data in test pack is realized by calling communication entity in lower layer through network interface relevant to protocol to be tested, it is no linger interacted with lower layer protocol and actual network. Lower layer protocol type realized by protocol to be tested is shielded to designer of testing set. Testing set and testing system passes testing under the said shielding condition. Interface of test pack is equivalent to I / O queue in PDU type of protocol to be tested. Object of communication entity in lower layer is embedded into each object of network interface to fulfill packaging / sending data to be tested and receiving / de-packaging returned data. Using limited system resources through defining proper label information in network interface needed for concurrent testing can simulate all test pack.
Description
technical field [0001] The invention relates to the technical field of computer network protocol engineering, in particular to a transmission method for computer network protocol consistency testing. Background technique [0002] Protocol conformance testing is an important branch of protocol engineering, and its purpose is to discover the functional and logical errors of the implementation under test (IUT) of the protocol under test (IUT) through experiments. The reason for studying protocol conformance testing is that protocol standards are basically described in natural language at present, and different understandings of protocol standards by implementers will lead to different protocol implementations, and sometimes even wrong implementations, so an effective method is needed To verify and judge the protocol implementation. For testers, the internal logical structure of the protocol under test is invisible, so conformance testing is a kind of black-box testing. [000...
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IPC IPC(8): H04L12/26H04L29/02H04M3/22
Inventor 张玉军李忠诚郑红霞田野
Owner 冲石通信技术(北京)有限公司