draft-ietf-tcpm-alternativebackoff-ecn-10.txt   draft-ietf-tcpm-alternativebackoff-ecn-11.txt 
skipping to change at page 1, line 13 skipping to change at page 1, line 13
Network Working Group N. Khademi Network Working Group N. Khademi
Internet-Draft M. Welzl Internet-Draft M. Welzl
Intended status: Experimental University of Oslo Intended status: Experimental University of Oslo
Expires: March 4, 2019 G. Armitage Expires: March 4, 2019 G. Armitage
Netflix Netflix
G. Fairhurst G. Fairhurst
University of Aberdeen University of Aberdeen
August 31, 2018 August 31, 2018
TCP Alternative Backoff with ECN (ABE) TCP Alternative Backoff with ECN (ABE)
draft-ietf-tcpm-alternativebackoff-ecn-10 draft-ietf-tcpm-alternativebackoff-ecn-11
Abstract Abstract
Active Queue Management (AQM) mechanisms allow for burst tolerance Active Queue Management (AQM) mechanisms allow for burst tolerance
while enforcing short queues to minimise the time that packets spend while enforcing short queues to minimise the time that packets spend
enqueued at a bottleneck. This can cause noticeable performance enqueued at a bottleneck. This can cause noticeable performance
degradation for TCP connections traversing such a bottleneck, degradation for TCP connections traversing such a bottleneck,
especially if there are only a few flows or their bandwidth-delay- especially if there are only a few flows or their bandwidth-delay-
product is large. The reception of a Congestion Experienced (CE) ECN product is large. The reception of a Congestion Experienced (CE) ECN
mark indicates that an AQM mechanism is used at the bottleneck, and mark indicates that an AQM mechanism is used at the bottleneck, and
skipping to change at page 3, line 47 skipping to change at page 3, line 47
the strict requirement that ECN CE signals be treated identically to the strict requirement that ECN CE signals be treated identically to
inferred packet loss have been relaxed [RFC8311]. This document inferred packet loss have been relaxed [RFC8311]. This document
therefore defines a new sender-side-only congestion control response, therefore defines a new sender-side-only congestion control response,
called "ABE" (Alternative Backoff with ECN). ABE improves TCP's called "ABE" (Alternative Backoff with ECN). ABE improves TCP's
average throughput when routers use AQM controlled buffers that allow average throughput when routers use AQM controlled buffers that allow
only for short queues. only for short queues.
2. Definitions 2. Definitions
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
document are to be interpreted as described in RFC 2119 "OPTIONAL" in this document are to be interpreted as described in BCP
[RFC2119][RFC8174] . 14 RFC 2119 [RFC2119] [RFC8174] when, and only when, they appear in
all capitals, as shown here.
3. Specification 3. Specification
This specification changes the congestion control algorithm of an This specification changes the congestion control algorithm of an
ECN-Capable TCP transport protocol by changing the TCP sender ECN-Capable TCP transport protocol by changing the TCP sender
response to feedback from the TCP receiver that indicates reception response to feedback from the TCP receiver that indicates reception
of a CE-marked packet, i.e., receipt of a packet with the ECN-Echo of a CE-marked packet, i.e., receipt of a packet with the ECN-Echo
flag (defined in [RFC3168]) set, following the process defined in flag (defined in [RFC3168]) set, following the process defined in
[RFC8311]. [RFC8311].
 End of changes. 2 change blocks. 
4 lines changed or deleted 5 lines changed or added

This html diff was produced by rfcdiff 1.47. The latest version is available from http://tools.ietf.org/tools/rfcdiff/