Open Research Issues in Internet Congestion Control
RFC 6077
Document | Type | RFC - Informational (February 2011; No errata) | |
---|---|---|---|
Authors | Michael Welzl , Dimitri Papadimitriou , Bob Briscoe , Michael Scharf , Michael Welzl | ||
Last updated | 2019-10-07 | ||
Stream | Internet Research Task Force (IRTF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Stream | IRTF state | (None) | |
Consensus Boilerplate | Unknown | ||
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6077 (Informational) | |
Action Holders |
(None)
|
||
Telechat date | |||
Responsible AD | Lars Eggert | ||
Send notices to | weddy@grc.nasa.gov |
Internet Research Task Force (IRTF) D. Papadimitriou, Ed. Request for Comments: 6077 Alcatel-Lucent Category: Informational M. Welzl ISSN: 2070-1721 University of Oslo M. Scharf University of Stuttgart B. Briscoe BT & UCL February 2011 Open Research Issues in Internet Congestion Control Abstract This document describes some of the open problems in Internet congestion control that are known today. This includes several new challenges that are becoming important as the network grows, as well as some issues that have been known for many years. These challenges are generally considered to be open research topics that may require more study or application of innovative techniques before Internet- scale solutions can be confidently engineered and deployed. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Research Task Force (IRTF). The IRTF publishes the results of Internet-related research and development activities. These results might not be suitable for deployment. This RFC represents the consensus of the Internet Congestion Control Research Group (ICCRG) of the Internet Research Task Force (IRTF). Documents approved for publication by the IRSG are not a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6077. Papadimitriou, et al. Informational [Page 1] RFC 6077 Open Issues in Internet Congestion Control February 2011 Copyright Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Papadimitriou, et al. Informational [Page 2] RFC 6077 Open Issues in Internet Congestion Control February 2011 Table of Contents 1. Introduction ....................................................3 2. Global Challenges ...............................................5 2.1. Heterogeneity ..............................................5 2.2. Stability ..................................................7 2.3. Fairness ...................................................8 3. Detailed Challenges ............................................10 3.1. Challenge 1: Network Support ..............................10 3.1.1. Performance and Robustness .........................14 3.1.2. Granularity of Network Component Functions .........15 3.1.3. Information Acquisition ............................16 3.1.4. Feedback Signaling .................................17 3.2. Challenge 2: Corruption Loss ..............................17 3.3. Challenge 3: Packet Size ..................................19 3.4. Challenge 4: Flow Startup .................................24 3.5. Challenge 5: Multi-Domain Congestion Control ..............26 3.5.1. Multi-Domain Transport of Explicit Congestion Notification ............................26 3.5.2. Multi-Domain Exchange of Topology or Explicit Rate Information ..........................27 3.5.3. Multi-Domain Pseudowires ...........................28 3.6. Challenge 6: Precedence for Elastic Traffic ...............30 3.7. Challenge 7: Misbehaving Senders and Receivers ............31 3.8. Other Challenges ..........................................33 3.8.1. RTT Estimation .....................................33 3.8.2. Malfunctioning Devices .............................35 3.8.3. Dependence on RTT ..................................36 3.8.4. Congestion Control in Multi-Layered Networks .......36 3.8.5. Multipath End-to-End Congestion Control and Traffic Engineering ................................37 3.8.6. ALGs and Middleboxes ...............................37Show full document text