HyStart++: Modified Slow Start for TCP
RFC 9406, “HyStart++: Modified Slow Start for TCP”, is a Proposed Standard document published in May 2023 by P. Balasubramanian, Y. Huang, M. Olson. The canonical text is published by the RFC Editor.
Abstract
This document describes HyStart++, a simple modification to the slow start phase of congestion control algorithms. Slow start can overshoot the ideal send rate in many cases, causing high packet loss and poor performance. HyStart++ uses increase in round-trip delay as a heuristic to find an exit point before possible overshoot. It also adds a mitigation to prevent jitter from causing premature slow start exit.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9406 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 9405 AI Sarcasm Detection: Insult Your AI without Offending It
- RFC 9407 Tetrys: An On-the-Fly Network Coding Protocol
- RFC 9404 JSON Meta Application Protocol Blob Management Extension
- RFC 9408 A YANG Network Data Model for Service Attachment Points
- RFC 9403 A YANG Data Model for RIB Extensions
- RFC 9409 The 'sip-trunking-capability' Link Relation Type
- RFC 9402 Concat Notation
- RFC 9410 Handling of Identity Header Errors for Secure Telephone Identity Revisited