A summary of IEEE efforts to data center ethernet.
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Kuzmanovic et al (2009) Adding Explicit Congestion Notification (ECN) Capability to TCP's SYN/ACK packets (RFC5562)
This experimental RFC suggest to extend ECN to SYN-ACK packets of TCP three-way handshake as well. The idea is to use initial window of 1 instead of 2, 3, or 4 for congested network. Note, ECN-capable transport (ECT) is not set on SYN packet, but on SYN-ACK packet. This is...
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Ramakrishnan et al (2001) The Addtion of Explicit Congestion Notification (ECN) to IP (RFC3168)
This is the standard for ECN.
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Allman et al (2001) Enhancing TCP's Loss Recovery Using Limited Transmit (RFC3042)
A small change to TCP to reduce its reliance on the retransmission timer:
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Allman et al (2002) Increasing TCP's Initial Window (RFC3390)
Instead of what RFC2581 describes, the initial congestion window is increased to 2-4 MSS:
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