Profile for Datagram Congestion Control Protocol (DCCP) Congestion ID 4: TCP-Friendly Rate Control for Small Packets (TFRC-SP)

Document Type Replaced Internet-Draft (individual in gen area)
Last updated 2007-07-04 (latest revision 2007-07-03)
Replaces draft-floyd-ccid4
Replaced by draft-ietf-dccp-ccid4
Stream IETF
Intended RFC status (None)
Expired & archived
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Stream WG state (None)
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-dccp-ccid4
Telechat date
Responsible AD Lars Eggert
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document contains the profile for Congestion Control Identifier 4, the Small-Packet variant of TCP-Friendly Rate Control (TFRC), in the Datagram Congestion Control Protocol (DCCP). CCID 4 is for experimental use, and uses TFRC-SP [RFC4828], a variant of TFRC designed for applications that send small packets. The goal for TFRC-SP is to achieve roughly the same bandwidth in bits per second (bps) as a TCP flow using packets of up to 1500 bytes but experiencing the same level of congestion. CCID 4 is for experimental use for senders that send small packets and would like a TCP-friendly sending rate, possibly with Explicit Congestion Notification (ECN), while minimizing abrupt rate changes.


Sally Floyd (
Eddie Kohler (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)