1. the Performance of Transport Protocols for Web Traffic
SCTP vs. TCP
the Performance of Transport
Protocols for Web Traffic
Group of 10a
Student Name: Zou, Cheng && Yang, Yixi
Student Number: &&

2. Background-SCTP A transport layer protocol initialization - 4exchanges
Operates at 2 levels:
receiving data chunk correctly
realizing the partial ordering of datagrams
Nodes can using more than one IP addresses

3. Queue – Droptail & RED Droptail Random early detection (RED)
network component buffers as many packets as it can, and simply drops the ones it cannot buffer. If buffers are constantly full, the network is congested.
Random early detection (RED)
RED monitors the average queue size and drops packets based on statistical probabilities. As the queue grows, the probability for dropping an incoming packet grows too.

4. TCP vs SCTP
Performance
Packet loss rate
Queue delay

5. Simulation results- packet loss

6. Simulation results – Queue Delay
Droptail buffer type

7. Simulation results- Queue Delay
RED buffer type

8. Conclusion
The network performance is unfair when both SCTP and TCP transfer data in the same link
Queue is Droptail, the capability of SCTP is always better than TCP both in packet loss and queue delay
Queue is RED, only when buffer size is small, TCP performs better

9. Reference
Rajesh Rajamani, Sumit Kumar, Nikhil Gupta SCTP versus TCP: Comparing the Performance of Transport Protocols for Web Traffic 2002
Floyd, Sally; Jacobson, Van (August 1993). "Random Early Detection (RED) gateways for Congestion Avoidance". IEEE/ACM Transactions on Networking 1 (4): 397–413
Floyd, S. RFC 2914: Congestion control principles (2000)
Afzall, Aman-Ullah-Khan',Yousaf Bin Zikria, Salvatore Loreto: SCTP vs. TCP Delay and Packet Loss
Ibrahim F. Haddad and David Gordon Network Simulator 2: a Simulation Tool for Linux Oct 21, 2002
Sukwoo Kang and Matthew Fields Experimental Study of the SCTP compared to TCP
Armando L. Caro Jr., Keyur Shah, Janardhan R. Iyengar, Paul D. Amer Congestion Control: SCTP vs TCP
Svilen Ivanov, Andr´e Herms, and Georg Lukas Experimental Validation of the ns-2 Wireless Model using Simulation, Emulation, and Real Network

10. Thank you !