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« Return to Thread: I-D Action: draft-ietf-tcpm-1323bis-02.txt
Re: I-D Action: draft-ietf-tcpm-1323bis-02.txt
by David Borman-2
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Hi Richard,
Thanks for doing the legwork on bringing this document into the modern age, the original nroff code was getting a bit old. :-)
The pseudo code needs to be updated to match the main body of the document. Specifically, it has:
Check whether the segment contains a Timestamps option and
bit Snd.TS.OK is on. If so:
If SEG.TSval < TS.Recent and the RST bit is off, then
test whether connection has been idle less than 24 days;
if all are true, then the segment is not acceptable;
follow steps below for an unacceptable segment.
If SEG.SEQ is equal to Last.ACK.sent, then save SEG.TSval
in variable TS.Recent.
There are four cases for the acceptability test for an
incoming segment:
The second case needs to be changed to:
If SEG.SEQ is less than or equal to Last.ACK.sent, then save SEG.TSval
in variable TS.Recent.
-David Borman
On May 18, 2012, at 11:14 AM, Internet-Drafts@... wrote:
>
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the TCP Maintenance and Minor Extensions Working Group of the IETF.
>
> Title : TCP Extensions for High Performance
> Author(s) : David Borman
> Bob Braden
> Van Jacobson
> Richard Scheffenegger
> Filename : draft-ietf-tcpm-1323bis-02.txt
> Pages : 45
> Date : 2012-05-18
>
> This memo presents a set of TCP extensions to improve performance
> over large bandwidth*delay product paths and to provide reliable
> operation over very high-speed paths. It defines TCP options for
> scaled windows and timestamps, which are designed to provide
> compatible interworking with TCP's that do not implement the
> extensions. The timestamps are used for two distinct mechanisms:
> RTTM (Round Trip Time Measurement) and PAWS (Protection Against
> Wrapped Sequences). Selective acknowledgments are not included in
> this memo.
>
> This memo updates and obsoletes RFC 1323.
>
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-tcpm-1323bis-02.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> This Internet-Draft can be retrieved at:
> ftp://ftp.ietf.org/internet-drafts/draft-ietf-tcpm-1323bis-02.txt
>
> The IETF datatracker page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-tcpm-1323bis/
>
> _______________________________________________
> tcpm mailing list
> tcpm@...
> https://www.ietf.org/mailman/listinfo/tcpm
_______________________________________________
tcpm mailing list
tcpm@...
https://www.ietf.org/mailman/listinfo/tcpm
Thanks for doing the legwork on bringing this document into the modern age, the original nroff code was getting a bit old. :-)
The pseudo code needs to be updated to match the main body of the document. Specifically, it has:
Check whether the segment contains a Timestamps option and
bit Snd.TS.OK is on. If so:
If SEG.TSval < TS.Recent and the RST bit is off, then
test whether connection has been idle less than 24 days;
if all are true, then the segment is not acceptable;
follow steps below for an unacceptable segment.
If SEG.SEQ is equal to Last.ACK.sent, then save SEG.TSval
in variable TS.Recent.
There are four cases for the acceptability test for an
incoming segment:
The second case needs to be changed to:
If SEG.SEQ is less than or equal to Last.ACK.sent, then save SEG.TSval
in variable TS.Recent.
-David Borman
On May 18, 2012, at 11:14 AM, Internet-Drafts@... wrote:
>
> A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the TCP Maintenance and Minor Extensions Working Group of the IETF.
>
> Title : TCP Extensions for High Performance
> Author(s) : David Borman
> Bob Braden
> Van Jacobson
> Richard Scheffenegger
> Filename : draft-ietf-tcpm-1323bis-02.txt
> Pages : 45
> Date : 2012-05-18
>
> This memo presents a set of TCP extensions to improve performance
> over large bandwidth*delay product paths and to provide reliable
> operation over very high-speed paths. It defines TCP options for
> scaled windows and timestamps, which are designed to provide
> compatible interworking with TCP's that do not implement the
> extensions. The timestamps are used for two distinct mechanisms:
> RTTM (Round Trip Time Measurement) and PAWS (Protection Against
> Wrapped Sequences). Selective acknowledgments are not included in
> this memo.
>
> This memo updates and obsoletes RFC 1323.
>
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-tcpm-1323bis-02.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> This Internet-Draft can be retrieved at:
> ftp://ftp.ietf.org/internet-drafts/draft-ietf-tcpm-1323bis-02.txt
>
> The IETF datatracker page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-tcpm-1323bis/
>
> _______________________________________________
> tcpm mailing list
> tcpm@...
> https://www.ietf.org/mailman/listinfo/tcpm
_______________________________________________
tcpm mailing list
tcpm@...
https://www.ietf.org/mailman/listinfo/tcpm
« Return to Thread: I-D Action: draft-ietf-tcpm-1323bis-02.txt
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