1. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University Advanced Computer Network Systems Internet Protocols & Schemes Receiver Partial-Reliable SCTP

2. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 1 History of SCTP IETF RFC 2960 –Developed specialized transport protocol for call control signaling in voice-over-IP (VoIP) networks. Embracement of SCTP –SCTP became a general-purpose protocol joining UDP and TCP in the Transport layer.

3. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 2 SCTP Features Multiple Delivery Modes Message Framing Multihoming Multistreaming TCP-friendly

4. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 3 (Partial-Reliability) SCTP Extension of SCTP (RFC 3758) Created a ForwardTSN chunk Sender assigns degrees of reliability per stream to reduce retransmits Time-to-live per stream

5. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 4 (Receiver Partial-Reliable) SCTP Modification of SCTP Gives receiver ability to judge the reliability of a stream of data Receiver “SACKs” data not received in order to get the newest data

6. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 5 (Receiver Partial-Reliable) SCTP Advantages over UDP –Congestion and Flow Control (TCP-Friendly) Advantages over PR-SCTP –Reduces overhead

7. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 6 Network Simulator 2 (ns-2) Wrote module in C++ Created simulations with OTcl Very fast simulation time provides efficient analysis

8. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 7 Simulation One: UDP Simple network of 2 nodes 10Mb bandwidth and 200ms delay 0 1

9. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 8 Simulation One: UDP

10. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 9 Simulation One: UDP

11. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 10 Simulation Two: PR-SCTP (Reliability = 0)

12. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 11 Simulation Two: PR-SCTP (Reliability = 0)

13. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 12 Simulation Two: PR-SCTP (Reliability = 1)

14. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 13 Simulation Two: PR-SCTP (Reliability = 2)

15. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 14 Simulation Two: RPR-SCTP

16. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 15 Simulation Two: RPR-SCTP

17. RPR-SCTP Will Jenkins and Kennabec Walp Adv. Comp. Net. SystemsElectrical & Computer Engineering Mississippi State University 16 References R. Stewart and Q. Xie et. al., “Stream Control Transmission Protocol.” IETF RFC 2960. October 2000 S. Fu and M. Atiquzzaman, “SCTP: state of the art in research, products, and technical challenges.” Computer Communications. pp. 85-91. October 2003. R. Stewart. M. Ramalho, Q. Xie, and P. Conral. “SCTP Partial Reliable Extension.” IETF RFC 3758. H. Wang, Y. Jin, W. Wang, J. Ma, and D. Zhang. “ The performance of PRSCTP, TCP, and UDP for MPEG-4 multimedia traffic in mobile network.” International Conference on Communication Technology. pp. 414-419. April 2003. K. Fall and K. Varadnam, “The ns Manual.” December 2003. [Online] Available: http://www.isi.edu/nsnam/ns/ns-documentation Will Jenkins and Kennabec Walp SCTP