Preserving bandwidth using a lazy packet discard policy in ATM networks

Azer Bestavros; Gitae Kim

doi:10.1117/12.360380

18 August 1999 Preserving bandwidth using a lazy packet discard policy in ATM networks

Azer Bestavros, Gitae Kim

Proceedings Volume 3841, Performance and Control of Network Systems III; (1999) https://doi.org/10.1117/12.360380
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

In this paper, we introduce Lazy Packet Discard (LPD), an AAL-level enhancement that improves effective throughput, reduces response time, and minimizes wasted bandwidth for TCP/IP over ATM. In contrast to the SCD and EPD policies, LPD delays as much as possible the removal from the network of cells belonging to a partially communicated packet. LPD preserves network bandwidth by keeping such cells alive and by ensuring that additional cells, obtained through Reed- Solomon block coding at the sender's AAL, are eventually transmitted to salvage the packet in question. We outline the implementation of LPD and show the performance advantage of TCP/LPD, compared to plain TCP and TCP/EPD through analysis and simulations.

Citation Download Citation

Azer Bestavros and Gitae Kim "Preserving bandwidth using a lazy packet discard policy in ATM networks", Proc. SPIE 3841, Performance and Control of Network Systems III, (18 August 1999); https://doi.org/10.1117/12.360380

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