RFC 8257: Data Center TCP (DCTCP): TCP Congestion Control for Data Centers
In plain English — editorial summary, not part of the RFC
This Informational RFC describes Data Center TCP (DCTCP): a TCP congestion control scheme for data-center 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, discusses the lack of a negotiating mechanism between sender and receiver, and presents some possible mitigations. This memo documents DCTCP as currently implemented by several major operating systems. DCTCP, as described in this specification, is applicable to deployments in controlled environments like data centers, but it must not be deployed over the public Internet without additional measures.
Document record
- Document ID
- RFC8257
- Published
- October 2017
- Authors
- S. Bensley; D. Thaler; P. Balasubramanian; L. Eggert; G. Judd
- Status
- INFORMATIONAL
- Stream
- IETF
- Area
- wit
- Pages
- 17
- Also known as
- —
Topics
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 8084Network Transport Circuit BreakersCurrent
March 2017
- RFC 7560Problem Statement and Requirements for Increased Accuracy in Explicit Congestion Notification (ECN) FeedbackCurrent
August 2015
- RFC 9330Low Latency, Low Loss, and Scalable Throughput (L4S) Internet Service: ArchitectureCurrent
January 2023
- RFC 9331The Explicit Congestion Notification (ECN) Protocol for Low Latency, Low Loss, and Scalable Throughput (L4S)Current
January 2023
- RFC 9332Dual-Queue Coupled Active Queue Management (AQM) for Low Latency, Low Loss, and Scalable Throughput (L4S)Current
January 2023
- RFC 9406HyStart++: Modified Slow Start for TCPCurrent
May 2023
- RFC 6679Explicit Congestion Notification (ECN) for RTP over UDPUpdated
August 2012
- RFC 6633Deprecation of ICMP Source Quench MessagesCurrent
May 2012
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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