Quick-Start for the Datagram Congestion Control Protocol (DCCP)
RFC 5634
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RFC - Experimental
(August 2009; No errata)
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Last updated |
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2015-10-14
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draft-fairhurst-tsvwg-dccp-qs
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IETF
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plain text
pdf
html
bibtex
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WG state
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(None)
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Document shepherd |
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No shepherd assigned
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IESG state |
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RFC 5634 (Experimental)
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Consensus Boilerplate |
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Unknown
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Telechat date |
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Responsible AD |
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Lars Eggert
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(None)
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Network Working Group G. Fairhurst
Request for Comments: 5634 A. Sathiaseelan
Category: Experimental University of Aberdeen
August 2009
Quick-Start for the Datagram Congestion Control Protocol (DCCP)
Abstract
This document specifies the use of the Quick-Start mechanism by the
Datagram Congestion Control Protocol (DCCP). DCCP is a transport
protocol that allows the transmission of congestion-controlled,
unreliable datagrams. DCCP is intended for applications such as
streaming media, Internet telephony, and online games. In DCCP, an
application has a choice of congestion control mechanisms, each
specified by a Congestion Control Identifier (CCID). This document
specifies general procedures applicable to all DCCP CCIDs and
specific procedures for the use of Quick-Start with DCCP CCID 2, CCID
3, and CCID 4. Quick-Start enables a DCCP sender to cooperate with
Quick-Start routers along the end-to-end path to determine an allowed
sending rate at the start of a connection and, at times, in the
middle of a DCCP connection (e.g., after an idle or application-
limited period). The present specification is provided for use in
controlled environments, and not as a mechanism that would be
intended or appropriate for ubiquitous deployment in the global
Internet.
Status of This Memo
This memo defines an Experimental Protocol for the Internet
community. It does not specify an Internet standard of any kind.
Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Copyright Notice
Copyright (c) 2009 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 in effect on the date of
publication of this document (http://trustee.ietf.org/license-info).
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document.
Fairhurst & Sathiaseelan Experimental [Page 1]
RFC 5634 Quick-Start for DCCP August 2009
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction ....................................................3
1.1. Terminology ................................................4
2. Quick-Start for DCCP ............................................5
2.1. Sending a Quick-Start Request for a DCCP Flow ..............5
2.1.1. The Quick-Start Interval ............................5
2.2. Receiving a Quick-Start Request for a DCCP Flow ............6
2.2.1. The Quick-Start Response Option .....................7
2.3. Receiving a Quick-Start Response ...........................8
2.3.1. The Quick-Start Mode ................................8
2.3.2. The Quick-Start Validation Phase ....................9
2.4. Procedure When No Response to a Quick-Start Request .......10
2.5. Procedure When a Packet Is Dropped While Using
Quick-Start ...............................................11
2.6. Interactions with Mobility and Signaled Path Changes ......11
2.7. Interactions with Path MTU Discovery ......................12
2.8. Interactions with Middleboxes .............................12
3. Mechanisms for Specific CCIDs ..................................13
3.1. Quick-Start for CCID 2 ....................................13
3.1.1. The Quick-Start Request for CCID 2 .................13
3.1.2. Sending a Quick-Start Response with CCID 2 .........13
3.1.3. Using the Quick-Start Response with CCID 2 .........13
3.1.4. Quick-Start Validation Phase for CCID 2 ............14
3.1.5. Reported Loss or Congestion While Using
Quick-Start ........................................14
3.1.6. CCID 2 Feedback Traffic on the Reverse Path ........15
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