Guaranteed Frame Rate : a better service for TCP/IP in ATM networks

Olivier Bonaventure, Jordi Nelissen

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Guaranteed Frame Rate (GFR) recently approved by the ATM Forum is expected to become an important service category to efficiently support TCP/IP traffic in ATM networks. We first describe the GFR traffic contract in details. We then present different types of switch implementations that have been proposed to support GFR. We analyze the performance of three of these switch implementations by simulations in two different network environments. These simulations show that the scheduler-based implementations provide a much better performance than the simple switch implementation. However, we also show that coupling an active packet discard mechanisms to a scheduler-based switch implementation does not produce a performance gain when many TCP connections are multiplexed inside one ATM VC.
langue originaleAnglais
Pages (de - à)46-54
Nombre de pages9
journalIEEE Network Magazine
Numéro de publication1
Etat de la publicationPublié - 2001

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