Business intercommunication test method and device for asynchronous transferring mode exchange

Abstract

The present invention discloses a business intercommunication test method and device for asynchronous transferring mode exchange. Test business flow is made to traverse all exchange channels, and theATM test card compares the final business flow with the initial business flow, counts and judges the cell loss and error data, and reports the test result. The present invention solves the problem ofdata source in high-speed cell business flow test and can perform the high-load business test of exchanger. The business flow produced by the test device may be exchanged to all channels without testleakage. The present invention may be used in high-efficiency automatic test.

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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