[AVTCORE] [Errata Verified] RFC3611 (3795)

RFC Errata System <rfc-editor@rfc-editor.org> Wed, 22 July 2015 14:17 UTC

Return-Path: <wwwrun@rfc-editor.org>
X-Original-To: avt@ietfa.amsl.com
Delivered-To: avt@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com []) by ietfa.amsl.com (Postfix) with ESMTP id DC7C01B2C27; Wed, 22 Jul 2015 07:17:34 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -101.912
X-Spam-Status: No, score=-101.912 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_WHITELIST=-100] autolearn=ham
Received: from mail.ietf.org ([]) by localhost (ietfa.amsl.com []) (amavisd-new, port 10024) with ESMTP id 1wZhMUVMmgmn; Wed, 22 Jul 2015 07:17:33 -0700 (PDT)
Received: from rfc-editor.org (rfc-editor.org [IPv6:2001:1900:3001:11::31]) by ietfa.amsl.com (Postfix) with ESMTP id 84CE01B2AC5; Wed, 22 Jul 2015 07:17:32 -0700 (PDT)
Received: by rfc-editor.org (Postfix, from userid 30) id D4501180471; Wed, 22 Jul 2015 07:13:37 -0700 (PDT)
To: sjames@genband.com, almeroth@cs.ucsb.edu, caceres@watson.ibm.com, alan@telchemy.com, robert.cole@jhuapl.edu, duffield@research.att.com, timur.friedman@lip6.fr, khedayat@brixnet.com, ksarac@utdallas.edu, magnus.westerlund@ericsson.com
X-PHP-Originating-Script: 1005:errata_mail_lib.php
From: RFC Errata System <rfc-editor@rfc-editor.org>
Message-Id: <20150722141337.D4501180471@rfc-editor.org>
Date: Wed, 22 Jul 2015 07:13:37 -0700 (PDT)
Archived-At: <http://mailarchive.ietf.org/arch/msg/avt/C39rncmapaipRMiX_5qYG_QnYp8>
X-Mailman-Approved-At: Wed, 22 Jul 2015 08:38:06 -0700
Cc: rfc-editor@rfc-editor.org, iesg@ietf.org, avt@ietf.org
Subject: [AVTCORE] [Errata Verified] RFC3611 (3795)
X-BeenThere: avt@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Audio/Video Transport Core Maintenance <avt.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/avt>, <mailto:avt-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/avt/>
List-Post: <mailto:avt@ietf.org>
List-Help: <mailto:avt-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/avt>, <mailto:avt-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Jul 2015 14:17:35 -0000

The following errata report has been verified for RFC3611,
"RTP Control Protocol Extended Reports (RTCP XR)". 

You may review the report below and at:

Status: Verified
Type: Technical

Reported by: Stephen James <sjames@genband.com>
Date Reported: 2013-11-11
Verified by: Ben Campbell (IESG)

Section: 5.1

Original Text
rtcp-xr-attrib = "a=" "rtcp-xr" ":" [xr-format *(SP xr-format)] CRLF

Corrected Text
rtcp-xr-attrib = "a=" "rtcp-xr" [ ":" xr-format *(SP xr-format)] CRLF

The ABNF for the attribute is causing some interoperability issues.
The text as written shows that the colon is required while the parameters are optional.
This leaves the format: "a=rtcp-xr:" the required format.  Vendors are using "a=rtcp-xr" which strictly violates the ABNF above. Moving the ':' into the optional part seems correct.

RFC3611 (draft-ietf-avt-rtcp-report-extns-06)
Title               : RTP Control Protocol Extended Reports (RTCP XR)
Publication Date    : November 2003
Author(s)           : T. Friedman, Ed., R. Caceres, Ed., A. Clark, Ed.
Category            : PROPOSED STANDARD
Source              : Audio/Video Transport
Area                : Real-time Applications and Infrastructure
Stream              : IETF
Verifying Party     : IESG