Depolyment Of Explicit Congestion Notification (Ecn) In Stream Control Transmission Protocol (Sctp) To Improve Congestion Management

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Date
2009-02
Authors
Abualead, Rafeak M. Salem
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Abstract
The Transfer Control Protocol (TCP) is a connection-oriented protocol that has served the Internet for many years. The User Datagram Protocol (UDP) is an unreliable protocol used for multimedia delivery such as video conference communications. Due to the availability of TCP and UDP therefore, many applications are compatible with either of them, but both applications are not compatible with each other. With the introduction of Stream Control Transmission Protocol (SCTP) to the communication community, some of the shortcomings of UDP and TCP have been covered. Even though SCTP is new, it is important to test its performance; and compare its efficiency to (TCP, and UDP); For instance, network congestion problems degrades network performance through packet losses, especially, losing the (TCP-SYN, and TCP-SYN-ACK) control packets in the TCP congested networks, and (SCTP-INIT, and SCTP-INIT-ACK) control chunks in SCTP congested networks. Accordingly, this research proposes a new method to improve SCTP chunks' lo'ss in congested networks by the use of Explicit Congestion Notification (ECN) in the SCTP chunks starting from SCTP (INIT, and INIT -ACK) chunks. The Network Simulator version 2 (ns-2) was used to evaluate this method in presence and absence of the ECN in the SCTP chunks. Our results shows better SCTP throughput in the UDP congested environment and compared with TCP throughput.
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The Transfer Control Protocol (TCP) is a connection-oriented protocol , that has served the Internet for many years.
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