[tcpm] [Technical Errata Reported] RFC5681 (5458)

RFC Errata System <rfc-editor@rfc-editor.org> Sun, 12 August 2018 23:33 UTC

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Subject: [tcpm] [Technical Errata Reported] RFC5681 (5458)
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The following errata report has been submitted for RFC5681,
"TCP Congestion Control".

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata/eid5458

--------------------------------------
Type: Technical
Reported by: James McCauley <jmccauley@cs.berkeley.edu>

Section: 2

Original Text
-------------
   DUPLICATE ACKNOWLEDGMENT: An acknowledgment is considered a
      "duplicate" in the following algorithms when (a) the receiver of
      the ACK has outstanding data, (b) the incoming acknowledgment
      carries no data, (c) the SYN and FIN bits are both off, (d) the
      acknowledgment number is equal to the greatest acknowledgment
      received on the given connection (TCP.UNA from [RFC793]) and (e)
      the advertised window in the incoming acknowledgment equals the
      advertised window in the last incoming acknowledgment.

Corrected Text
--------------
   DUPLICATE ACKNOWLEDGMENT: An acknowledgment is considered a
      "duplicate" in the following algorithms when (a) the receiver of
      the ACK has outstanding data, (b) the incoming acknowledgment
      carries no data, (c) the SYN and FIN bits are both off, (d) the
      acknowledgment number is equal to the greatest acknowledgment
      received on the given connection (SND.UNA from [RFC793]) and (e)
      the advertised window in the incoming acknowledgment equals the
      advertised window in the last incoming acknowledgment.

Notes
-----
There is no such thing as TCP.UNA in RFC793.  The boundary between acknowledged and unacknowledged sent data is SND.UNA.

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--------------------------------------
RFC5681 (draft-ietf-tcpm-rfc2581bis-07)
--------------------------------------
Title               : TCP Congestion Control
Publication Date    : September 2009
Author(s)           : M. Allman, V. Paxson, E. Blanton
Category            : DRAFT STANDARD
Source              : TCP Maintenance and Minor Extensions
Area                : Transport
Stream              : IETF
Verifying Party     : IESG