Title :
A testbed for token ring networks
Author_Institution :
Lehrstuhl fur Elektrische Regelungstech., Aachen Univ. of Technol., West Germany
Abstract :
The author describes a testbed based on a 4-Mb/s ISO 8802/5 token-ring network and consisting of a traffic generator subsystem in each network station and a distributed monitor system with centralized control and decentralized measurement. Dedicated hardware clocks in each station provide accurate global time information. The author presents examples of user-related performance measurement. Comparing previously published analytical results with these measurements reveals that implementation-specific characteristics strongly influence the performance observed by a user. An essential result, shown by measurements on priority operation of the network, is that for a small number of stations the differences in service between priority and nonpriority traffic predominantly occur at very high network loads
Keywords :
automatic test equipment; electronic equipment testing; standards; telecommunication traffic; token networks; 4 Mbit/s; ATE; ISO 8802/5 token-ring network; accurate global time information; centralized control; decentralized measurement; dedicated hardware clocks; distributed monitor system; implementation-specific characteristics; network station; nonpriority traffic; priority operation; service differences; testbed; traffic generator subsystem; user-related performance measurement; very high network loads; Centralized control; Clocks; Communication system traffic control; Hardware; ISO standards; Measurement; Monitoring; Performance analysis; System testing; Token networks;
Conference_Titel :
Local Computer Networks, 1989., Proceedings 14th Conference on
Conference_Location :
Mineapolis, MN
Print_ISBN :
0-8186-1968-6
DOI :
10.1109/LCN.1989.65245
