Adding Explicit Congestion Notification (ECN) Capability to TCP's SYN/ACK Packets

• Adding Explicit Congestion Notification (ECN) Capability to TCP's SYN/ACK Packets ,
  A. Kuzmanovic, S. Floyd, and K.K. Ramakrishnan,
  Internet-draft draft-ietf-tcpm-ecnsyn-08.txt, work-in-progress, April 2009.
  Local copy: (text, postscript). ECN web page.
  Simulation scripts. CDF plots. README for simulations.

• The earlier SIGCOMM paper: The Power of Explicit Congestion Notification (PDF), A. Kuzmanovic, SIGCOMM, August 2005.

• NS2, two-way TCP:
  • To enable ECN-Capability for SYN/ACK packets in two-way TCP (tcp-full) in ns-2:
    Agent/TCP/FullTcp set ecn_syn_ true

• NS2, one-way TCP:
  • To enable ECN-Capability for SYN/ACK packets in one-way TCP in ns-2:
    Agent/TCPSink set ecn_syn_ true
  • As of 10/31/2008, ECN+/TryOnce has not been added to one-way TCP in ns-2.

• NS2 validation tests with TCP (in tcl/test):
  • To run tests: ./test-all-ecn-ack