SCTP and Congestion Control
This section introduces Stream Control Transmission Protocol (SCTP) and examines congestion control in transport networks. It covers SCTP’s message-oriented design, multistreaming, multihoming, association management, and compares SCTP with TCP and UDP while also addressing congestion control objectives and operational strategies.
Learning Goals
- Describe the core service model of SCTP and explain how it differs from TCP and UDP in terms of message orientation and association management.
- Explain the concepts of multistreaming and multihoming in SCTP and analyze their benefits for reliability and performance.
- Compare SCTP, TCP, and UDP across criteria such as connection management, delivery guarantees, head-of-line blocking, and application support.
- Define congestion control and explain why it is necessary for maintaining network stability and fair resource usage.
- Analyze common transport-layer congestion control behaviors, including congestion detection, sender rate adjustment, and recovery after packet loss or network overload.