The IESG has received a request from the TCP Maintenance and Minor Extensions WG (tcpm) to consider the following document: - 'Datacenter TCP (DCTCP): TCP Congestion Control for Datacenters' <draft-ietf-tcpm-dctcp-07.txt> as Informational RFC The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2017-06-15. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This informational memo describes Datacenter TCP (DCTCP), a TCP congestion control scheme for datacenter traffic. DCTCP extends the Explicit Congestion Notification (ECN) processing to estimate the fraction of bytes that encounter congestion, rather than simply detecting that some congestion has occurred. DCTCP then scales the TCP congestion window based on this estimate. This method achieves high burst tolerance, low latency, and high throughput with shallow- buffered switches. This memo also discusses deployment issues related to the coexistence of DCTCP and conventional TCP, the lack of a negotiating mechanism between sender and receiver, and presents some possible mitigations. This memo documents existing DCTCP implementations ([WINDOWS], [LINUX], [FREEBSD]) and deployment experience ([MORGANSTANLEY]). DCTCP as described in this draft is applicable to deployments in controlled environments like datacenters but it must not be deployed over the public Internet without additional measures, as detailed in Section 5. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-tcpm-dctcp/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-tcpm-dctcp/ballot/ The following IPR Declarations may be related to this I-D: https://datatracker.ietf.org/ipr/2319/
