DocumentCode :
1725075
Title :
Providing QoS guarantees in packet switches
Author :
Chiussi, Fabio M. ; Francini, Andrea
Author_Institution :
Bell Labs., Lucent Technol., Holmdel, NJ, USA
Volume :
2
fYear :
1999
fDate :
6/21/1905 12:00:00 AM
Firstpage :
1582
Abstract :
The continuous growth in the demand for diversified quality-of-service (QoS) guarantees in broadband networks introduces new challenges in the design of next-generation packet switches. Packet scheduling is the most critical function involved in the provision of individual bandwidth and delay guarantees to the switched flows. Most of the scheduling techniques proposed so far assume the presence in the switch of a single contention point, residing in front of the outgoing links. Such an assumption is not consistent with many popular switch architectures, which typically have multiple contention points, located in both ingress and egress port cards, as well as in the fabric itself. We define a distributed scheduling architecture to provide differentiated QoS guarantees to individual traffic flows in a switch with multiple contention points. Our scheduling architecture is simple to implement, since it keeps per-flow scheduling confined to the port cards, and is suitable for applications in QoS frameworks for both IP and ATM networks
Keywords :
asynchronous transfer mode; broadband networks; delays; distributed processing; packet switching; quality of service; queueing theory; telecommunication traffic; transport protocols; ATM networks; IP networks; QoS guarantees; bandwidth; broadband networks; cell queues; delay guarantees; differentiated QoS guarantees; distributed scheduling architecture; egress port cards; ingress port cards; multiple contention points; packet scheduling; packet switches; per-flow scheduling; quality of service; switch architecture; switched flows; traffic flows; Bandwidth; Broadband communication; Delay; Fabrics; Next generation networking; Packet switching; Quality of service; Scheduling algorithm; Switches; Telecommunication traffic;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 1999. GLOBECOM '99
Conference_Location :
Rio de Janeireo
Print_ISBN :
0-7803-5796-5
Type :
conf
DOI :
10.1109/GLOCOM.1999.830047
Filename :
830047
Link To Document :
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