A practical scheduling algorithm to achieve 100% throughput in input-queued switches

Input queueing is becoming increasingly used for high-bandwidth switches and routers. In previous work, it was proved that it is possible to achieve 100% throughput for input-queued switches using a combination of virtual output queueing and a scheduling algorithm called LQF However, this is only a...

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Veröffentlicht in:Annual Joint Conference of the IEEE Computer and Communications Societies Jg. 2; S. 792 - 799 vol.2
Hauptverfasser: Mekkittikul, A., McKeown, N.
Format: Tagungsbericht Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 1998
Schlagworte:
Aggregates
Bandwidth
Control systems
Fabrics
Hardware
Packet switching
Reflection
Scheduling algorithm
Switches
Throughput
ISBN:0780343832, 9780780343832
ISSN:0743-166X
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Zusammenfassung:Input queueing is becoming increasingly used for high-bandwidth switches and routers. In previous work, it was proved that it is possible to achieve 100% throughput for input-queued switches using a combination of virtual output queueing and a scheduling algorithm called LQF However, this is only a theoretical result: LQF is too complex to implement in hardware. We introduce a new algorithm called longest port first (LPF), which is designed to overcome the complexity problems of LQF, and can be implemented in hardware at high speed. By giving preferential service based on queue lengths, we prove that LPF can achieve 100% throughput.
Bibliographie:SourceType-Scholarly Journals-2
ObjectType-Feature-2
ObjectType-Conference Paper-1
content type line 23
SourceType-Conference Papers & Proceedings-1
ObjectType-Article-3
ISBN:0780343832
9780780343832
ISSN:0743-166X
DOI:10.1109/INFCOM.1998.665102