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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Keywords
The Transfer Control Protocol (TCP) is a connection-oriented protocol , that has served the Internet for many years.