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2004•Unpublished venueRequires access

Petri net approach to improving SACK TCP resilience

Qiang Ye, M.H. MacGregor

Open publisher page 4 citations

Abstract

The transmission control protocol (TCP) was designed to provide a reliable end-to-end network connection. The most up-to-date TCP version, SACK TCP, was designed to be capable of surviving multiple segment loss. However, it has been found that if too many segments in one transmission window are lost, even if SACK TCP transitions into fast recovery, it is still possible that timeout will finally occur and the performance will be degraded significantly. In this paper we propose a change in TCP that decreases the impact of lost segments by at least 75%. We modeled the improved SACK TCP with Design/CPN and verified formally that this change leaves TCP "correct" in the sense that all states are bounded and the desired final state is always reachable from the initial state.

About this research paper

What this paper is about

The transmission control protocol (TCP) was designed to provide a reliable end-to-end network connection. The most up-to-date TCP version, SACK TCP, was designed to be capable of surviving multiple segment loss. However, it has been found that if too many segments in one transmission window are lost, even if SACK TCP transitions into fast recovery, it is still possible that timeout will finally occur and the performance will be degraded significantly. In this paper we propose a change in TCP that decreases the impact of lost segments by at least 75%. We modeled the improved SACK TCP with Design/CPN and verified formally that this change leaves TCP "correct" in the sense that all states are bounded and the desired final state is always reachable from the initial state.

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OpenAlex reports 4 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

The transmission control protocol (TCP) was designed to provide a reliable end-to-end network connection. The most up-to-date TCP version, SACK TCP, was designed to be capable of surviving multiple segment loss. However, it has been found that if too many segments in one transmission window are lost, even if SACK TCP transitions into fast recovery, it is still possible that timeout will finally occur and the performance will be degraded significantly. In this paper we propose a change in TCP that decreases the impact of lost segments by at least 75%. We modeled the improved SACK TCP with Design/CPN and verified formally that this change leaves TCP "correct" in the sense that all states are bounded and the desired final state is always reachable from the initial state.

Key concepts: Sack, Zeta-TCP, TCP global synchronization, TCP acceleration, TCP Friendly Rate Control, Computer science, Compound TCP, Computer network

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