Title :
Implementing layer-2, connection-oriented QoS on a 3-stage Clos switch architecture
Author :
Liotopoulos, F.K. ; Guizani, M.
Author_Institution :
Comput. Technol. Inst., Athens, Greece
Abstract :
The implementation of effective quality of service (QoS) support for user services must be implemented end-to-end and through all layers of the OSI hierarchy at each network node. We consider the layer-2 design of an ATM switch, which is built as a scalable, 3-stage Clos switching network and discuss architectural choices for the implementation of QoS support on this switch. An ATM-like cell format is used to encapsulate and propagate traffic and resource management information through the switch. Call admission control, fast inter-stage cell transfers and priority-based queue arbitration are used as congestion control and resource management mechanisms. Simulation results are presented to show the effect of architectural choices (internal buffering) on QoS parameters.
Keywords :
asynchronous transfer mode; buffer storage; multistage interconnection networks; open systems; quality of service; queueing theory; resource allocation; telecommunication congestion control; telecommunication traffic; ATM switch; Clos switch architecture; Clos switching network; OSI hierarchy; QoS; buffering; call admission control; congestion control; inter-stage cell transfers; quality of service; queue arbitration; resource management information; traffic information; Asynchronous transfer mode; Call admission control; Computer architecture; Fabrics; Process design; Quality of service; Resource management; Switches; Telecommunication traffic; Traffic control;
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
DOI :
10.1109/GLOCOM.2002.1189128
