This paper studies TCP performance with different offset times which arise when hybrid multi-granular technology is employed in OBS core nodes. Multi-granular switches are promising devices to match dynamic application needs while optimizing switch costs and feasibility. They foster optical burst switching in multi-service contexts where switching matrices are designed and optimized in application awareness. OBS base offset time is strictly dependent on switching matrix set up time which, in presence of hybrid technology, is different from path to path. These differences impact on end-to-end performance and in particular on TCP throughput. This work studies end-to-end performance for two basic classes of connections, namely slow and fast connections. Simulations results based on a careful set up of ns-2 simulations according to test bed configurations described in literature are provided to show the effects of the employment of different optical technologies on the TCP throughput.

TCP Performance in Hybrid Multigranular OBS Networks / Casoni, Maurizio; C., Raffaelli. - ELETTRONICO. - (2009), pp. 1-5. ((Intervento presentato al convegno Internal Workshop on Optical Burst/Packet Switching tenutosi a Madrid (Spain) nel 14-16 September 2009.

TCP Performance in Hybrid Multigranular OBS Networks

CASONI, Maurizio;
2009

Abstract

This paper studies TCP performance with different offset times which arise when hybrid multi-granular technology is employed in OBS core nodes. Multi-granular switches are promising devices to match dynamic application needs while optimizing switch costs and feasibility. They foster optical burst switching in multi-service contexts where switching matrices are designed and optimized in application awareness. OBS base offset time is strictly dependent on switching matrix set up time which, in presence of hybrid technology, is different from path to path. These differences impact on end-to-end performance and in particular on TCP throughput. This work studies end-to-end performance for two basic classes of connections, namely slow and fast connections. Simulations results based on a careful set up of ns-2 simulations according to test bed configurations described in literature are provided to show the effects of the employment of different optical technologies on the TCP throughput.
Internal Workshop on Optical Burst/Packet Switching
Madrid (Spain)
14-16 September 2009
1
5
Casoni, Maurizio; C., Raffaelli
TCP Performance in Hybrid Multigranular OBS Networks / Casoni, Maurizio; C., Raffaelli. - ELETTRONICO. - (2009), pp. 1-5. ((Intervento presentato al convegno Internal Workshop on Optical Burst/Packet Switching tenutosi a Madrid (Spain) nel 14-16 September 2009.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/643311
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