[tcpm] RFC 9438 on CUBIC for Fast and Long-Distance Networks

A new Request for Comments is now available in online RFC libraries.

        RFC 9438

        Title:      CUBIC for Fast and Long-Distance Networks 
        Author:     L. Xu,
                    S. Ha,
                    I. Rhee,
                    V. Goel,
                    L. Eggert, Ed.
        Status:     Standards Track
        Stream:     IETF
        Date:       August 2023
        Mailbox:    xu@unl.edu,
                    sangtae.ha@colorado.edu,
                    injongrhee@gmail.com,
                    vidhi_goel@apple.com,
                    lars@eggert.org
        Pages:      28
        Obsoletes:  RFC 8312
        Updates:    RFC 5681

        I-D Tag:    draft-ietf-tcpm-rfc8312bis-15.txt

        URL:        https://www.rfc-editor.org/info/rfc9438

        DOI:        10.17487/RFC9438

CUBIC is a standard TCP congestion control algorithm that uses a
cubic function instead of a linear congestion window increase
function to improve scalability and stability over fast and
long-distance networks. CUBIC has been adopted as the default TCP
congestion control algorithm by the Linux, Windows, and Apple stacks.

This document updates the specification of CUBIC to include
algorithmic improvements based on these implementations and recent
academic work. Based on the extensive deployment experience with
CUBIC, this document also moves the specification to the Standards
Track and obsoletes RFC 8312. This document also updates RFC 5681, to
allow for CUBIC's occasionally more aggressive sending behavior.

This document is a product of the TCP Maintenance and Minor Extensions Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
standardization state and status of this protocol.  Distribution of this 
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