Title :
Simulation of hierarchical scheduler for ATM switches
Author :
Yaglioglu, Mutlu ; Distler, Rudi
Author_Institution :
Div. of ATM Services, AT&T, Middletown, NJ, USA
Abstract :
Traffic scheduling is an important function that provides service differentiation to a wide range of quality of service (QoS) requirements for connections that belong to different traffic classes. This article presents a simulation based traffic analysis tool for asynchronous transfer mode (ATM) switches. The simulator for the ATM cell scheduler models a complex hierarchical scheduling (HS) discipline with multiple levels of scheduling. The interaction of the first level per virtual circuit (VC) scheduler with second level class scheduler among multiple class types is very complex. It is useful to use the simulator to derive theoretical outcomes of traffic configurations both in live networks and in lab environments. Connection admission control (CAC) algorithms are also incorporated in the simulator for effective bandwidth (EBW) calculation and scheduler weight allocation. Simulation results are presented at the end of the paper.
Keywords :
asynchronous transfer mode; bandwidth allocation; quality of service; scheduling; telecommunication congestion control; telecommunication traffic; ATM cell scheduler; ATM switches; CAC algorithms; QoS requirements; asynchronous transfer mode; connection admission control algorithms; effective bandwidth calculation; hierarchical scheduler; quality of service; scheduler weight allocation; traffic scheduling; virtual circuit scheduler; Admission control; Analytical models; Asynchronous transfer mode; Circuit simulation; Communication system traffic control; Quality of service; Scheduling algorithm; Switches; Traffic control; Virtual colonoscopy;
Conference_Titel :
Computers and Communication, 2003. (ISCC 2003). Proceedings. Eighth IEEE International Symposium on
Print_ISBN :
0-7695-1961-X
DOI :
10.1109/ISCC.2003.1214174
