Business intercommunication test method and device for asynchronous transferring mode exchange

Abstract

The invention discloses a service interworking test method and device of an asynchronous transfer mode switch, which allows the test service flow to traverse all switching channels, and finally compares the final service flow received by the ATM test card with the initially sent service flow, counts and judges the number of cells Lost, wrong data, and report the test results. It solves the problem of the test data source of the business flow of high-speed cells, and can carry out high-load business tests on the whole switch; the business flow (cell) generated by the test device can be switched to any channel, so it can be tested to the network board Cross-channel, there is no missing test; the ports that need to be connected during the test only need to be plugged and unplugged at one time, breaking through the test obstacles inherent in the test object with many test channels and high data transmission rate, and realizing high-efficiency automatic testing.

Description

Technical field: [0001] The invention relates to a method and a device for testing service interworking of an asynchronous transfer mode (ATM) exchange. Background technique: [0002] With the continuous increase of transmission rate and switching capacity, the design of ATM broadband switches has become increasingly complex, so the production test of this kind of broadband switching products is also facing increasingly severe challenges, and the most difficult and most important in the production system level test The most important is the business interoperability test, which is to test the business interoperability between each board of the product, and also to test the switching capability of the entire switch. This test item is a key point for a comprehensive inspection of the entire ATM switch before delivery, and its significance can be imagined. [0003] Such as figure 1 As shown, the ATM broadband switch has three parts: the switching unit, the interface unit and ...

AI Technical Summary

Problems solved by technology

[0006] ① The cost of the tester is too high. This is because the product is in the production duplication stage, and there are many similar products that need to be debugged. In this way, the cost issue must be carefully considered, so the cost of batch testing is very high

[0007] ②The ATM ports supported by many testers are limited, and the optical fiber needs to be plugged and unplugged many times during the test, which reduces the test efficiency and is not suitable for the test requirements of mass production

[0008] ③ The intervention of external instruments requires a corresponding improvement in the quality of testers, which virtually increases the cost of manpower

[0010] ①The rate of sending SAR packets is limited, it is difficult to reach the rate supported by the switching channel, and it cannot test the performance such as the function of the back pressure mechanism of the network board

[0011] ②Because the SAR chip of the control board sends the contract to the physical port, it only covers the switching channel belonging to the currently tested I / O board, and the cross channel of the network board cannot be tested (if the cross channel is supported, the software modification workload is huge), There is a missing test problem, and obviously the coverage cannot be guaranteed

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