From mary.ietf.barnes@gmail.com Mon Feb 25 11:12:42 2013 Return-Path: X-Original-To: vipr@ietfa.amsl.com Delivered-To: vipr@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C32A521F8E69 for ; Mon, 25 Feb 2013 11:12:42 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -103.575 X-Spam-Level: X-Spam-Status: No, score=-103.575 tagged_above=-999 required=5 tests=[AWL=0.024, BAYES_00=-2.599, RCVD_IN_DNSWL_LOW=-1, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nuFoQYDHCH1Z for ; Mon, 25 Feb 2013 11:12:38 -0800 (PST) Received: from mail-qe0-f54.google.com (mail-qe0-f54.google.com [209.85.128.54]) by ietfa.amsl.com (Postfix) with ESMTP id 4C19F21E80B7 for ; Mon, 25 Feb 2013 11:12:38 -0800 (PST) Received: by mail-qe0-f54.google.com with SMTP id k5so1633326qej.41 for ; Mon, 25 Feb 2013 11:12:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=fqu66MtAHSPCFbjpImk6AQXL+z+u+ke76lrVH0zDh40=; b=t2wIYeDVS0Kpz9/rMjp7NJTV5lIFtUDgcDungWzeIOFNZvGZqoOE8Kd0YIuJxW3ICP jb/VorjCcPlYZ5PF3sgzj8gxo2xWFbOKP+YD7KuwlZ1DqxUe6kTNQz7FaRpsz4oBpfmG 3H3f1KJHsfrWBLxPtYWntRj2J52vVET0XpdysVCnqzCML7LnxoNJcOAVXlWUn7VVqj5F g/jDR6uypXWs/QxcB+ssRwEyz3MBj8nHbRIL4Xt1RFrWjL1xzeihiIN5x3N4xKZFu5Vv QVlqbfa6WPb4brE6kutWza2i0/QTot3hZfE9wcv4mJzzuQn4g4VeIx2kI8VTGbCmGvco 2PFQ== MIME-Version: 1.0 X-Received: by 10.224.216.65 with SMTP id hh1mr12671420qab.43.1361819557560; Mon, 25 Feb 2013 11:12:37 -0800 (PST) Received: by 10.49.24.130 with HTTP; Mon, 25 Feb 2013 11:12:37 -0800 (PST) In-Reply-To: <20130225190800.6939.18272.idtracker@ietfa.amsl.com> References: <20130225190800.6939.18272.idtracker@ietfa.amsl.com> Date: Mon, 25 Feb 2013 13:12:37 -0600 Message-ID: From: Mary Barnes To: "vipr@ietf.org" Content-Type: text/plain; charset=ISO-8859-1 Cc: Cullen Jennings , Marc Blanchet , "rai-ads@tools.ietf.org" , vipr-chairs@tools.ietf.org Subject: [VIPR] Fwd: I-D Action: draft-jennings-vipr-overview-04.txt X-BeenThere: vipr@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Verification Involving PSTN Reachability working group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2013 19:12:43 -0000 There is no substantial changes in this document - just updating a couple references to keep the doc alive. At this point, it is not clear to me what the plan is for the VIPR WG or any of the documents. There had been some discussion of publishing some of the documents as "this is what's been implemented by Cisco" as informational, I guess. Or whether the plan is just to close the WG. But, again, I figured it wouldn't hurt to keep the document updated for now. BTW, I think this document could be revised as informational and published as is. Regards, Mary. ---------- Forwarded message ---------- From: Date: Mon, Feb 25, 2013 at 1:08 PM Subject: I-D Action: draft-jennings-vipr-overview-04.txt To: i-d-announce@ietf.org A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Verification Involving PSTN Reachability: Requirements and Architecture Overview Author(s) : Mary Barnes Cullen Jennings Jonathan Rosenberg Marc Petit-Huguenin Filename : draft-jennings-vipr-overview-04.txt Pages : 28 Date : 2013-02-25 Abstract: The Session Initiation Protocol (SIP) has seen widespread deployment within individual domains, typically supporting voice and video communications. Though it was designed from the outset to support inter-domain federation over the public Internet, such federation has not materialized. The primary reasons for this are the complexities of inter-domain phone number routing and concerns over security. This document reviews this problem space, outlines requirements, and then describes a new model and technique for inter-domain federation with SIP involving the Public Switched Telephone Network (PSTN), called Verification Involving PSTN Reachability (VIPR). VIPR addresses the problems that have prevented inter-domain federation over the Internet. It provides fully distributed inter-domain routing for phone numbers, authorized mappings from phone numbers to domains, a new technique for automated SIP anti-spam, and privacy of number ownership, all while preserving the trapezoidal model of SIP. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-jennings-vipr-overview There's also a htmlized version available at: http://tools.ietf.org/html/draft-jennings-vipr-overview-04 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-jennings-vipr-overview-04 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt From fluffy@cisco.com Mon Feb 25 11:21:48 2013 Return-Path: X-Original-To: vipr@ietfa.amsl.com Delivered-To: vipr@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C6D2921F92FF for ; Mon, 25 Feb 2013 11:21:47 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -110.581 X-Spam-Level: X-Spam-Status: No, score=-110.581 tagged_above=-999 required=5 tests=[AWL=0.018, BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id U7oHUaW0C+ES for ; Mon, 25 Feb 2013 11:21:47 -0800 (PST) Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) by ietfa.amsl.com (Postfix) with ESMTP id 706A221F92EB for ; Mon, 25 Feb 2013 11:21:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3467; q=dns/txt; s=iport; t=1361820106; x=1363029706; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=5BKKOFzbwvpbcE0IDsaYUUVuYuVKfY3LaFDmPW3cx2E=; b=UuUye8PyxBsJX54lX/QWgdTQgBitTbvmB2bDpKA87s/t32Zkm98gDQ3m hW4KZpDi/uF8fc23ecsxNasVHuM/8nBMeX+RNMIJSBN2Ekbj7iOXpMppr 8CjQOjhveEWziM2JVZNjAKt7F+Qi2Avm22pOkn9/xxkJjl0ybIXkZylGZ A=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgIFAAe5K1GtJXG//2dsb2JhbABFg3i9YIEFFnOCHwEBAQMBAQEBNzQLBQsCAQgRAQIBAh8QIQYLFwYIAgQOBQmHeAMJBgcFtgoNiUGMN4IkKAsCBQaCWWEDlGCBXYEdijEDhRSDBw X-IronPort-AV: E=Sophos;i="4.84,736,1355097600"; d="scan'208";a="180960485" Received: from rcdn-core2-4.cisco.com ([173.37.113.191]) by rcdn-iport-5.cisco.com with ESMTP; 25 Feb 2013 19:21:38 +0000 Received: from xhc-rcd-x06.cisco.com (xhc-rcd-x06.cisco.com [173.37.183.80]) by rcdn-core2-4.cisco.com (8.14.5/8.14.5) with ESMTP id r1PJLcKh024161 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Mon, 25 Feb 2013 19:21:38 GMT Received: from xmb-aln-x02.cisco.com ([169.254.5.155]) by xhc-rcd-x06.cisco.com ([173.37.183.80]) with mapi id 14.02.0318.004; Mon, 25 Feb 2013 13:21:38 -0600 From: "Cullen Jennings (fluffy)" To: Mary Barnes Thread-Topic: I-D Action: draft-jennings-vipr-overview-04.txt Thread-Index: AQHOE4w85dojbojv8UWQapE5GNCdNZiK85Ef Date: Mon, 25 Feb 2013 19:21:37 +0000 Message-ID: <6B80C323-0886-4830-A308-08DCE2D67D9E@cisco.com> References: <20130225190800.6939.18272.idtracker@ietfa.amsl.com>, In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: Marc Blanchet , "vipr@ietf.org" , "rai-ads@tools.ietf.org" , "vipr-chairs@tools.ietf.org" Subject: Re: [VIPR] I-D Action: draft-jennings-vipr-overview-04.txt X-BeenThere: vipr@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Verification Involving PSTN Reachability working group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2013 19:21:48 -0000 I think there is one security issue that Darrel has proposed text for that = I and others need to review then I think we should be good to publish=20 On Feb 25, 2013, at 12:13 PM, "Mary Barnes" wr= ote: > There is no substantial changes in this document - just updating a > couple references to keep the doc alive. At this point, it is not > clear to me what the plan is for the VIPR WG or any of the documents. > There had been some discussion of publishing some of the documents as > "this is what's been implemented by Cisco" as informational, I guess. > Or whether the plan is just to close the WG. But, again, I figured it > wouldn't hurt to keep the document updated for now. >=20 > BTW, I think this document could be revised as informational and > published as is. >=20 > Regards, > Mary. >=20 > ---------- Forwarded message ---------- > From: > Date: Mon, Feb 25, 2013 at 1:08 PM > Subject: I-D Action: draft-jennings-vipr-overview-04.txt > To: i-d-announce@ietf.org >=20 >=20 >=20 > A New Internet-Draft is available from the on-line Internet-Drafts direct= ories. >=20 >=20 > Title : Verification Involving PSTN Reachability: > Requirements and Architecture Overview > Author(s) : Mary Barnes > Cullen Jennings > Jonathan Rosenberg > Marc Petit-Huguenin > Filename : draft-jennings-vipr-overview-04.txt > Pages : 28 > Date : 2013-02-25 >=20 > Abstract: > The Session Initiation Protocol (SIP) has seen widespread deployment > within individual domains, typically supporting voice and video > communications. Though it was designed from the outset to support > inter-domain federation over the public Internet, such federation has > not materialized. The primary reasons for this are the complexities > of inter-domain phone number routing and concerns over security. > This document reviews this problem space, outlines requirements, and > then describes a new model and technique for inter-domain federation > with SIP involving the Public Switched Telephone Network (PSTN), > called Verification Involving PSTN Reachability (VIPR). VIPR > addresses the problems that have prevented inter-domain federation > over the Internet. It provides fully distributed inter-domain > routing for phone numbers, authorized mappings from phone numbers to > domains, a new technique for automated SIP anti-spam, and privacy of > number ownership, all while preserving the trapezoidal model of SIP. >=20 >=20 > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-jennings-vipr-overview >=20 > There's also a htmlized version available at: > http://tools.ietf.org/html/draft-jennings-vipr-overview-04 >=20 > A diff from the previous version is available at: > http://www.ietf.org/rfcdiff?url2=3Ddraft-jennings-vipr-overview-04 >=20 >=20 > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ >=20 > _______________________________________________ > I-D-Announce mailing list > I-D-Announce@ietf.org > https://www.ietf.org/mailman/listinfo/i-d-announce > Internet-Draft directories: http://www.ietf.org/shadow.html > or ftp://ftp.ietf.org/ietf/1shadow-sites.txt From petithug@acm.org Mon Feb 25 12:49:19 2013 Return-Path: X-Original-To: vipr@ietfa.amsl.com Delivered-To: vipr@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3814221E80CE for ; Mon, 25 Feb 2013 12:49:19 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.563 X-Spam-Level: X-Spam-Status: No, score=-102.563 tagged_above=-999 required=5 tests=[AWL=0.038, BAYES_00=-2.599, NO_RELAYS=-0.001, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LRN0HK4fg0hv for ; Mon, 25 Feb 2013 12:49:18 -0800 (PST) Received: from implementers.org (implementers.org [IPv6:2604:3400:dc1:41:216:3eff:fe5b:8240]) by ietfa.amsl.com (Postfix) with ESMTP id 2501421E80CC for ; Mon, 25 Feb 2013 12:49:18 -0800 (PST) Received: from [IPv6:2601:9:4b80:32:69cb:6b3f:dfaa:1476] (unknown [IPv6:2601:9:4b80:32:69cb:6b3f:dfaa:1476]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client CN "Marc Petit-Huguenin", Issuer "implementers.org" (verified OK)) by implementers.org (Postfix) with ESMTPS id 9C18F20515 for ; Mon, 25 Feb 2013 20:49:16 +0000 (UTC) Message-ID: <512BCE4F.1020706@acm.org> Date: Mon, 25 Feb 2013 12:49:19 -0800 From: Marc Petit-Huguenin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130116 Icedove/10.0.12 MIME-Version: 1.0 To: "vipr@ietf.org" References: <20130217164312.17648.47102.idtracker@ietfa.amsl.com> In-Reply-To: <20130217164312.17648.47102.idtracker@ietfa.amsl.com> X-Enigmail-Version: 1.4.1 X-Forwarded-Message-Id: <20130217164312.17648.47102.idtracker@ietfa.amsl.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: [VIPR] Fwd: I-D Action: draft-petithuguenin-p2psip-reload-sctp-00.txt X-BeenThere: vipr@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Verification Involving PSTN Reachability working group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2013 20:49:19 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 FYI, I wrote the following draft which I think is relevant for VIPR. This draft explains how to use SCTP between the VIPR nodes. Unlike the existing overlay link protocols defined in RELOAD, DTLS-SCTP-NO-ICE (or DTLS-SCTP-UDP if it is decided that VIPR nodes can be used behind a firewall/nat) does not suffer from Head-of-Line blocking. - -------- Original Message -------- Subject: I-D Action: draft-petithuguenin-p2psip-reload-sctp-00.txt Date: Sun, 17 Feb 2013 08:43:12 -0800 From: internet-drafts@ietf.org Reply-To: internet-drafts@ietf.org To: i-d-announce@ietf.org A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : SCTP Overlay link for REsource LOcation And Discovery (RELOAD) Author(s) : Marc Petit-Huguenin Filename : draft-petithuguenin-p2psip-reload-sctp-00.txt Pages : 4 Date : 2013-02-17 Abstract: This document defines two new Overlay Link protocols to be used with REsource LOcation And Discovery (RELOAD), both using SCTP. The Overlay Link protocol DTLS-SCTP-NO-ICE uses DTLS on top of native SCTP for overlays that do not require the use of ICE. The Overlay Link protocol DTLS-SCTP-UDP uses DTLS on top of an UDP encapsulation of SCTP for overlays that require the use of ICE. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-petithuguenin-p2psip-reload-sctp There's also a htmlized version available at: http://tools.ietf.org/html/draft-petithuguenin-p2psip-reload-sctp-00 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBCAAGBQJRK85LAAoJECnERZXWan7EMtUQAObtB9nL87ecFU90n0pRXoov YUSIg2QOZteCtbDtFbYtnlcuhfRfpQ+AdtVL3loFfduRFGYXopri2qZRqv3aI8JJ rGrhwm65BbMHzf4e3vBOGWNJz8LzpFobglTjo0xuej+79iz8GGoYSfzfxlIHkMhA VMtpMdAk9tzoNDgcdFctyMP7CozmGy94AO4a0Cqsxz3W52TQs7nJ2e7zFpFJ7cFP 2gVajNc7OjFMLba9wGOFAp+erFXTmFafKGSFlmN/M47F0bwqLaqHbuEftcQo32MZ 9oRfDJ9BEILT40HyKW3bx7Z8Ord4Kd6Bs3M9yCsqRE/qIqKdNrggibPFIfOvASZ6 8jo224wd/rsMQ+AiQTx0AY5CZsvw3IRfxo0QpxxkYcmmtsp4uRqwV7s3h+luvnLc M49mrLEl0+yBTRfc3i3xW2VImIiWEgqpQuxdhzINViG0V1k+rnI1b1nG/Xwupg8C M8m9ocqz//058tmB+M/CdJHtYd4UbZZZDVoAjW/KN+IeAO1OEIPXBd/kAhijlYYe Wy5v7dOFyjpsWL7H3euiVJFwLnOXXT5yyw24ayQXfAwr6tni5MIy7smLalJvjY1/ 6Bq8CFwpY5QPu+GmHwaWUEAhbiqpxg4iSCBo90MZUngHo+pdCYNyGoGFPrjqTB7y 16VDjTjPjdzK+/Nc398u =qQn/ -----END PGP SIGNATURE----- From petithug@acm.org Mon Feb 25 13:22:53 2013 Return-Path: X-Original-To: vipr@ietfa.amsl.com Delivered-To: vipr@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6856521E80BC for ; Mon, 25 Feb 2013 13:22:53 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -102.558 X-Spam-Level: X-Spam-Status: No, score=-102.558 tagged_above=-999 required=5 tests=[AWL=0.042, BAYES_00=-2.599, NO_RELAYS=-0.001, USER_IN_WHITELIST=-100] Received: from mail.ietf.org ([64.170.98.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pt4ItpWdoRRK for ; Mon, 25 Feb 2013 13:22:52 -0800 (PST) Received: from implementers.org (implementers.org [IPv6:2604:3400:dc1:41:216:3eff:fe5b:8240]) by ietfa.amsl.com (Postfix) with ESMTP id 6F41221E80B2 for ; Mon, 25 Feb 2013 13:22:52 -0800 (PST) Received: from [IPv6:2601:9:4b80:32:69cb:6b3f:dfaa:1476] (unknown [IPv6:2601:9:4b80:32:69cb:6b3f:dfaa:1476]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client CN "Marc Petit-Huguenin", Issuer "implementers.org" (verified OK)) by implementers.org (Postfix) with ESMTPS id 7AEB420515 for ; Mon, 25 Feb 2013 21:22:51 +0000 (UTC) Message-ID: <512BD62E.4010103@acm.org> Date: Mon, 25 Feb 2013 13:22:54 -0800 From: Marc Petit-Huguenin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130116 Icedove/10.0.12 MIME-Version: 1.0 To: "vipr@ietf.org" References: <20130225211736.11910.23475.idtracker@ietfa.amsl.com> In-Reply-To: <20130225211736.11910.23475.idtracker@ietfa.amsl.com> X-Enigmail-Version: 1.4.1 X-Forwarded-Message-Id: <20130225211736.11910.23475.idtracker@ietfa.amsl.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: [VIPR] Fwd: Protocol Action: 'REsource LOcation And Discovery (RELOAD) Base Protocol' to Proposed Standard (draft-ietf-p2psip-base-26.txt) X-BeenThere: vipr@ietf.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Verification Involving PSTN Reachability working group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Feb 2013 21:22:53 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 FYI - -------- Original Message -------- Subject: Protocol Action: 'REsource LOcation And Discovery (RELOAD) Base Protocol' to Proposed Standard (draft-ietf-p2psip-base-26.txt) Date: Mon, 25 Feb 2013 13:17:36 -0800 From: The IESG To: IETF-Announce CC: p2psip chair , p2psip mailing list , RFC Editor The IESG has approved the following document: - - 'REsource LOcation And Discovery (RELOAD) Base Protocol' (draft-ietf-p2psip-base-26.txt) as Proposed Standard This document is the product of the Peer-to-Peer Session Initiation Protocol Working Group. The IESG contact persons are Gonzalo Camarillo and Robert Sparks. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-p2psip-base/ Technical Summary This document defines a protocol to manage a secure Peer-to-Peer (P2P) connection structure for use by Session Initiation Protocol (SIP) and other devices which allows these devices to function with minimal central servers. The protocol provides functionality to allow devices to securely form, join, leave, and maintain an overlay of peers. It also allows devices to establish connections between each other, and to collectively augment or replace the location and connection establishment capabilities of traditional client-server SIP in a P2P context. The overlay algorithm layer uses a plugin architecture to accommodate alternative technologies using DHT or other mechanisms. This document specifies a DHT based on CHORD as mandatory-to-implement to ensure interoperability. Diagnostics and tuning of the protocol are being developed by the working group in separate drafts. Working Group Summary This document is a WG document that has WG consensus. Document Quality The document went through an IESG last call and many comments were made by IESG and Gen-Art reviewers. The RAI Area Directors asked guest editors to assist in comment resolution, and Marc Petit-Huguenin and Dean Willis set up a work process where every IESG and Gen-Art comment was entered as an issue in a github issue tracker, with github then being used to track and review document changes. Document authors Cullen Jennings and Eric Rescorla participated in the revision process, with any needful questions being taken to the P2PSIP mailing list for discussion. All DISCUSS and most lesser comments are believed by the editors to have been addressed in the -25 version of the document. Note that there is ongoing debate about the application of RFC 2119 language in the document. The Gen-Art reviewer and one editor preferred a style with extensive use of RFC 2119 language for all normative text. Following an extended discussion on the IETF mailing list, a compromise style has been a pplied to the document. Personnel David Bryan is the document shepherd. Gonzalo Camarillo is the responsible AD. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBCAAGBQJRK9YsAAoJECnERZXWan7EbocP/0ZjwDsltsssERMS5VZ5pP0c tB8qecz976wvi3PIOu1hWUPQYj3ofJKSKp5NY7ijuMFW2Hwq/RzNhkRA6yZVA5Ei +0UO7N9FiKj79wuOFyNyklDpj8S3fjazRiIcuWn9VoCCVNcQdM34xpPfFt2FUzbF rXk1PMAQVu4gQszBz9bFriG7cwkXpxOLu7zqa7oWW6s1TezWHEnTmh0PMLK3sro4 kjrlQtBmUDryoR5Ms5JveCxKmfJUfxuyFT7tisy5DGptZuPYq9AIsrDon/ax/K84 cfgZsOfvoI/cL7EL+BFJZriDRUuDZJAd9GJ6IxilBSstJ45Dyhc949jredqhks+f k3dFFSEYBQpnDEdIdce8x/9WYlNCwG5bfLENDytwZuFWqmI757krEuvUQYNupnnC NUbD0PSz1VUL4/vma3TZwVE/o2AHr6hrArlIAtPitotkjeTLIdR+TtV/Mrqcjbul hyEhERlu4Ak2tOnLHq86lLtJp10JpWBA/D78keCrx8ARJHb/eCuGqRxRK+0rXzyh 0LXWATOj49uXPnq/OOT5YdctMXDcjiuvh2nXJ/lu2bVI61CJyxA55+WkiVsRGPDY GVy1iWGV9ofez4JHq3ZhVxWjtH+4rQ62UehT1xygeHvJFTbATL/vfH3tXfnKkW3e MCzucnBe4J4Ba6GSJ36o =Zabc -----END PGP SIGNATURE-----