IETF Logo Mail Archive

[Sip] [Technical Errata Reported] RFC3261 (2769)

RFC Errata System <rfc-editor@rfc-editor.org> Fri, 08 April 2011 07:51 UTC

Return-Path: <wwwrun@rfc-editor.org>
X-Original-To: sip@core3.amsl.com
Delivered-To: sip@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 513893A6A53 for <sip@core3.amsl.com>; Fri, 8 Apr 2011 00:51:30 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -102.406
X-Spam-Level:
X-Spam-Status: No, score=-102.406 tagged_above=-999 required=5 tests=[AWL=0.194, BAYES_00=-2.599, NO_RELAYS=-0.001, USER_IN_WHITELIST=-100]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1rXNuOHyXTk3 for <sip@core3.amsl.com>; Fri, 8 Apr 2011 00:51:29 -0700 (PDT)
Received: from rfc-editor.org (rfc-editor.org [IPv6:2001:1890:1112:1::2f]) by core3.amsl.com (Postfix) with ESMTP id 537293A6A55 for <sip@ietf.org>; Fri, 8 Apr 2011 00:51:29 -0700 (PDT)
Received: by rfc-editor.org (Postfix, from userid 30) id 7F888E075D; Fri, 8 Apr 2011 00:52:47 -0700 (PDT)
To: jdrosen@dynamicsoft.com, schulzrinne@cs.columbia.edu, Gonzalo.Camarillo@ericsson.com, alan.johnston@wcom.com, jon.peterson@neustar.com, rsparks@dynamicsoft.com, mjh@icir.org, schooler@research.att.com, gonzalo.camarillo@ericsson.com, rjsparks@nostrum.com, dean.willis@softarmor.com, drage@alcatel-lucent.com
From: RFC Errata System <rfc-editor@rfc-editor.org>
Message-Id: <20110408075247.7F888E075D@rfc-editor.org>
Date: Fri, 08 Apr 2011 00:52:47 -0700
Cc: sip@ietf.org, rfc-editor@rfc-editor.org
Subject: [Sip] [Technical Errata Reported] RFC3261 (2769)
X-BeenThere: sip@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: Session Initiation Protocol <sip.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/sip>, <mailto:sip-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/sip>
List-Post: <mailto:sip@ietf.org>
List-Help: <mailto:sip-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/sip>, <mailto:sip-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 08 Apr 2011 07:51:30 -0000

The following errata report has been submitted for RFC3261,
"SIP: Session Initiation Protocol".

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=3261&eid=2769

--------------------------------------
Type: Technical
Reported by: Iñaki Baz Castillo <ibc@aliax.net>

Section: 17.1.2.2

Original Text
-------------
   MUST be passed to the transport layer for transmission.  If an
   unreliable transport is in use, the client transaction MUST set timer
   E to fire in T1 seconds.  If timer E fires while still in this state,
   the timer is reset, but this time with a value of MIN(2*T1, T2).
   When the timer fires again, it is reset to a MIN(4*T1, T2).  This
   process continues so that retransmissions occur with an exponentially
   increasing interval that caps at T2.

Corrected Text
--------------
   MUST be passed to the transport layer for transmission.  If an
   unreliable transport is in use, the client transaction MUST set timer
   E to fire in T1 seconds.  If timer E fires while still in this state,
   the timer is reset, but this time with a value of MIN(2*T1, T2).
   When the timer fires again, it is reset to a MIN(4*T1, T2). Multiplier
   on T1 doubles with each reset so that retransmissions occur with an
   exponentially increasing interval that caps at T2.

Notes
-----
The original text doesn't clarify that the multiplier of T1 is doubled with each timer reset, so it could be understood that the maximum value the timer takes is MIN(4*T1, T2) which is 2s (so the timer would never reach 4s and the resulting intervals would be 500ms, 1s, 2s, 2s, 2s, 2s, etc).

Instructions:
-------------
This errata is currently posted as "Reported". If necessary, please
use "Reply All" to discuss whether it should be verified or
rejected. When a decision is reached, the verifying party (IESG)
can log in to change the status and edit the report, if necessary. 

--------------------------------------
RFC3261 (draft-ietf-sip-rfc2543bis-09)
--------------------------------------
Title               : SIP: Session Initiation Protocol
Publication Date    : June 2002
Author(s)           : J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler
Category            : PROPOSED STANDARD
Source              : Session Initiation Protocol
Area                : Real-time Applications and Infrastructure
Stream              : IETF
Verifying Party     : IESG

v2.23.0 | Report a Bug | By Email