[Tsvwg] RE: I-D ACTION:draft-ietf-sigtran-usctp-01.txt
Jon Berger <JRB@dataconnection.com> Thu, 22 February 2001 10:54 UTC
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From: Jon Berger <JRB@dataconnection.com>
To: Qiaobing Xie <xieqb@cig.mot.com>
Cc: "SIGTRAN LIST (E-mail)" <SIGTRAN@STANDARDS.NORTELNETWORKS.COM>, tsvwg@ietf.org
Date: Thu, 22 Feb 2001 10:50:44 -0000
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Subject: [Tsvwg] RE: I-D ACTION:draft-ietf-sigtran-usctp-01.txt
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Qiaobing, A few more comments on this latest draft. 1) Section 3.2.2 The description of the B and E bits indicates that fragmentation is not allowed in the P-DATA chunk, but the text in section 5 explicitly states that fragmentation is allowed. I think you need to update this section with the text from the RFC. 2) Section 3.2.2 One thing that isn't explicitly mentioned (although is implied) is when to calculate the checksum on padding bytes. Maybe the addition of the following sentence at the end of the Checksum Coverage section would help? "Padding at the end of the P-DATA chunk MUST NOT be considered when calculating the Adler-32 checksum." 3) Section 4.2 The second paragraph states that unreliable data must not be fragmented but transmitted in one go no matter what the size. Section 6.9 of the RFC says that, if fragmentation is supported, messages larger than the MTU must either be fragmented or not sent at all. I'm not aware of the reasoning for this requirement in the RFC but I think we should be consistent. Jon -----Original Message----- From: Internet-Drafts@ietf.org [mailto:Internet-Drafts@ietf.org] Sent: 20 February 2001 15:29 To: IETF-Announce Cc: sigtran@marvin.corpeast.baynetworks.com Subject: I-D ACTION:draft-ietf-sigtran-usctp-01.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Signaling Transport Working Group of the IETF. Title : SCTP Unreliable Data Mode Extension Author(s) : Q. Xie, R. Stewart, C. Sharp, I. Rytina Filename : draft-ietf-sigtran-usctp-01.txt Pages : 14 Date : 19-Feb-01 This document describes an extension to the Stream Control Transmission Protocol (SCTP) [RFC2960] to provide unreliable data transfer services. The benefits of this extension includes unified congestion control over reliable and unreliable data streams, single association for multi-content data services, link level fault tolerance for unreliable data transfer, unreliable data stream multiplexing, etc. The unreliable data transfer service will also support partial payload checksum in order to facilitate bit-error tolerance media applications. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-sigtran-usctp-01.txt Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-sigtran-usctp-01.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-sigtran-usctp-01.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. _______________________________________________ tsvwg mailing list tsvwg@ietf.org http://www1.ietf.org/mailman/listinfo/tsvwg
- [Tsvwg] RE: I-D ACTION:draft-ietf-sigtran-usctp-0… Jon Berger
- [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usctp-0… Qiaobing Xie
- RE: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Jon Berger
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Randall R. Stewart
- RE: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… john.loughney
- RE: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… KaCheong.Leung
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Randall R. Stewart
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Qiaobing Xie
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Randall R. Stewart
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Ian Rytina
- RE: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… john.loughney
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Qiaobing Xie
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Qiaobing Xie
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Randall R. Stewart
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Randall R. Stewart
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Qiaobing Xie
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Randall R. Stewart
- Re: [Tsvwg] Re: I-D ACTION:draft-ietf-sigtran-usc… Qiaobing Xie