From l2vpn-bounces@ietf.org Wed Apr 6 15:37:10 2005 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA21129 for ; Wed, 6 Apr 2005 15:37:10 -0400 (EDT) Received: from megatron.ietf.org ([132.151.6.71]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DJGTK-0002Q7-9G for l2vpn-web-archive@ietf.org; Wed, 06 Apr 2005 15:45:54 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DJGIQ-0002P5-TP; Wed, 06 Apr 2005 15:34:38 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DJGIM-0002Ii-8n; Wed, 06 Apr 2005 15:34:34 -0400 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA20590; Wed, 6 Apr 2005 15:34:32 -0400 (EDT) Message-Id: <200504061934.PAA20590@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: i-d-announce@ietf.org From: Internet-Drafts@ietf.org Date: Wed, 06 Apr 2005 15:34:31 -0400 Cc: l2vpn@ietf.org Subject: I-D ACTION:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org X-Spam-Score: 0.4 (/) X-Scan-Signature: cf3becbbd6d1a45acbe2ffd4ab88bdc2 --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Layer 2 Virtual Private Networks Working Group of the IETF. Title : ARP Mediation for IP Interworking of Layer 2 VPN Author(s) : H. Shah, et al. Filename : draft-ietf-l2vpn-arp-mediation-01.txt Pages : 14 Date : 2005-4-6 The VPWS service [L2VPN Framework] provides point-to-point connections between pairs of Customer Edge (CE) devices. It does so by binding two Attachment Circuits (each connecting a CE device with a Provider Edge, PE, device) to a Pseudowire (connecting the two PEs). In general, the Attachment Circuits must be of the same technology (e.g., both ethernet, both ATM), and the Pseudowire must carry the frames of that technology. However, if it is known that the frames' payload consists solely of IP datagrams, it is possible to provide a point-to-point connection in which the Pseudowire draft-ietf-l2vpn-arp-mediation-00.txt connects Attachment Circuits of different technologies. This requires the PEs to perform a function known as "ARP Mediation". This document specifies the ARP Mediation function, and specifies the encapsulation used to carry the IP datagrams on the Pseudowires when ARP mediation is used. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-l2vpn-arp-mediation-01.txt To remove yourself from the I-D Announcement list, send a message to i-d-announce-request@ietf.org with the word unsubscribe in the body of the message. You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce to change your subscription settings. 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-l2vpn-arp-mediation-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-l2vpn-arp-mediation-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. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2005-4-6160704.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-l2vpn-arp-mediation-01.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-l2vpn-arp-mediation-01.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2005-4-6160704.I-D@ietf.org> --OtherAccess-- --NextPart-- From l2vpn-bounces@ietf.org Wed Apr 6 16:10:05 2005 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA29302 for ; Wed, 6 Apr 2005 16:10:05 -0400 (EDT) Received: from megatron.ietf.org ([132.151.6.71]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DJGzB-0005Iw-2u for l2vpn-web-archive@ietf.org; Wed, 06 Apr 2005 16:18:50 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DJGoq-0008MA-Dh; Wed, 06 Apr 2005 16:08:08 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DJGoo-0008IE-Rp for l2vpn@megatron.ietf.org; Wed, 06 Apr 2005 16:08:07 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA29001 for ; Wed, 6 Apr 2005 16:08:04 -0400 (EDT) Received: from [64.47.51.130] (helo=exchange.timetra.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DJGxB-000597-14 for l2vpn@ietf.org; Wed, 06 Apr 2005 16:16:48 -0400 Received: from vkompellaxp ([172.22.184.202] unverified) by exchange.timetra.com with Microsoft SMTPSVC(5.0.2195.6713); Wed, 6 Apr 2005 13:07:39 -0700 From: "Vach Kompella" To: Date: Wed, 6 Apr 2005 13:07:32 -0700 Organization: Alcatel USA Message-ID: <002201c53ae4$45ea1390$cab816ac@eng.timetra.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4024 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-OriginalArrivalTime: 06 Apr 2005 20:07:39.0172 (UTC) FILETIME=[4868F640:01C53AE4] X-Spam-Score: 0.0 (/) X-Scan-Signature: 68c8cc8a64a9d0402e43b8eee9fc4199 Content-Transfer-Encoding: 7bit Subject: WG Last Call on ARP mediation draft: draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: vach.kompella@alcatel.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org X-Spam-Score: 0.0 (/) X-Scan-Signature: 7a6398bf8aaeabc7a7bb696b6b0a2aad Content-Transfer-Encoding: 7bit Folks, We are starting a 2 week working group Last Call on the ARP mediation draft. Please read and send comments to the list. Thanks. Vach Kompella IP Division, Alcatel vach.kompella@alcatel.com +1 650 623-2556 From l2vpn-bounces@ietf.org Mon Apr 11 16:27:40 2005 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA20605 for ; Mon, 11 Apr 2005 16:27:39 -0400 (EDT) Received: from megatron.ietf.org ([132.151.6.71]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DL5ey-00058I-5i for l2vpn-web-archive@ietf.org; Mon, 11 Apr 2005 16:37:28 -0400 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DL4o1-0008IL-Hn; Mon, 11 Apr 2005 15:42:45 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DL4nx-0008Hm-O3; Mon, 11 Apr 2005 15:42:41 -0400 Received: from CNRI.Reston.VA.US (localhost [127.0.0.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA13516; Mon, 11 Apr 2005 15:42:39 -0400 (EDT) Message-Id: <200504111942.PAA13516@ietf.org> Mime-Version: 1.0 Content-Type: Multipart/Mixed; Boundary="NextPart" To: i-d-announce@ietf.org From: Internet-Drafts@ietf.org Date: Mon, 11 Apr 2005 15:42:39 -0400 Cc: l2vpn@ietf.org Subject: I-D ACTION:draft-ietf-l2vpn-vpls-bgp-05.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org X-Spam-Score: 0.4 (/) X-Scan-Signature: f66b12316365a3fe519e75911daf28a8 --NextPart A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Layer 2 Virtual Private Networks Working Group of the IETF. Title : Virtual Private LAN Service Author(s) : K. Kompella, Y. Rekhter Filename : draft-ietf-l2vpn-vpls-bgp-05.txt Pages : 28 Date : 2005-4-11 Virtual Private LAN Service (VPLS), also known as Transparent LAN Service, and Virtual Private Switched Network service, is a useful Service Provider offering. The service offers a Layer 2 Virtual Private Network (VPN); however, in the case of VPLS, the customers in the VPN are connected by a multipoint network, in contrast to the usual Layer 2 VPNs, which are point-to-point in nature. This document describes the functions required to offer VPLS, a mechanism for signaling a VPLS, and rules for forwarding VPLS frames across a packet switched network. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-l2vpn-vpls-bgp-05.txt To remove yourself from the I-D Announcement list, send a message to i-d-announce-request@ietf.org with the word unsubscribe in the body of the message. You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce to change your subscription settings. 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-l2vpn-vpls-bgp-05.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-l2vpn-vpls-bgp-05.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. --NextPart Content-Type: Multipart/Alternative; Boundary="OtherAccess" --OtherAccess Content-Type: Message/External-body; access-type="mail-server"; server="mailserv@ietf.org" Content-Type: text/plain Content-ID: <2005-4-11161350.I-D@ietf.org> ENCODING mime FILE /internet-drafts/draft-ietf-l2vpn-vpls-bgp-05.txt --OtherAccess Content-Type: Message/External-body; name="draft-ietf-l2vpn-vpls-bgp-05.txt"; site="ftp.ietf.org"; access-type="anon-ftp"; directory="internet-drafts" Content-Type: text/plain Content-ID: <2005-4-11161350.I-D@ietf.org> --OtherAccess-- --NextPart-- From l2vpn-bounces@ietf.org Wed Apr 20 12:34:57 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOIAD-0001DN-EX; Wed, 20 Apr 2005 12:34:57 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOIAB-0001Cw-OJ for l2vpn@megatron.ietf.org; Wed, 20 Apr 2005 12:34:55 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA25398 for ; Wed, 20 Apr 2005 12:34:53 -0400 (EDT) From: kkhanna@isocore.com Received: from ns1.cpanel.btnaccess.com ([205.177.121.2]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DOILR-0000Ds-Lw for l2vpn@ietf.org; Wed, 20 Apr 2005 12:46:33 -0400 Received: from cpanel by ns1.cpanel.btnaccess.com with local (Exim 4.50) id 1DOIA9-0007r9-By for l2vpn@ietf.org; Wed, 20 Apr 2005 12:34:53 -0400 Received: from 65.213.193.37 ([65.213.193.37]) by isocore.com (Horde) with HTTP for ; Wed, 20 Apr 2005 12:34:53 -0400 Message-ID: <20050420123453.31oomt5zoitc4ocw@isocore.com> Date: Wed, 20 Apr 2005 12:34:53 -0400 To: l2vpn@ietf.org References: <20050418145215.bo0vnejrjy5co0cs@isocore.com> In-Reply-To: <20050418145215.bo0vnejrjy5co0cs@isocore.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Internet Messaging Program (IMP) H3 (4.0) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ns1.cpanel.btnaccess.com X-AntiAbuse: Original Domain - ietf.org X-AntiAbuse: Originator/Caller UID/GID - [32001 502] / [47 12] X-AntiAbuse: Sender Address Domain - isocore.com X-Spam-Score: 0.3 (/) X-Scan-Signature: 8b431ad66d60be2d47c7bfeb879db82c Content-Transfer-Encoding: 7bit Subject: MPLS 2005 Call for Presentations (Oct 16-19, Wash. DC) X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org ===================================== MPLS 2005 International Conference http://www.mpls2005.com October 16-19, 2005 Washington, DC ====================================== The Program Committee of MPLS2005 () is soliciting presentation proposals for this conference. If you wish to suggest a particular topic or a contribution, please send a one page long proposal (including speaker's contact details) to the attention of the Technical Program Committee at mpls2005-cfp@isocore.com by June 10, 2005. This year's conference will include, but not be limited to, topics such as: - MPLS in multi-area and multi-AS networks - Point-to-multipoint MPLS and applications - Supporting multicast in MPLS VPNs and for VPLS - Single and Multi-hop Pseudowire placement, setup and management - Providing QoS in MPLS networks - MPLS network management - OAM for MPLS networks - MPLS in the Next Generation Network - Voice over IP/MPLS - Triple-play applications on MPLS - MPLS-enabled Advanced services and converged networks - Interworking and migration for MPLS and GMPLS - Multi-layer networks and integration with non-packet technologies - Deploying, interworking and operating L2 and L3 MPLS VPNs - MPLS deployment experience: scaling, performance and security - Testing the technology: MPLS test tools and experience - Protection, restoration and reliability - Network processors for MPLS and GMPLS - MPLS/GMPLS control plane resilience, scaling and robustness - MPLS TE applications of the Path Computation Element (PCE) - Motivations and requirements for extending MPLS into the access network The program committee is looking for original and unpublished work to continue the tradition initiated by this conference in 1998 of covering cutting-edge topics. Presentations from the vendor, service provider, research and user community are solicited on new technologies and operational experience. REGISTRATION is also now open, with extremely lucrative early-bird discounts - visit for details. Thank you for your continued support. Regards, Kavita From l2vpn-bounces@ietf.org Thu Apr 21 13:19:53 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOfLF-0008V6-9e; Thu, 21 Apr 2005 13:19:53 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOfLD-0008V1-1S for l2vpn@megatron.ietf.org; Thu, 21 Apr 2005 13:19:51 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id NAA18868 for ; Thu, 21 Apr 2005 13:19:48 -0400 (EDT) Received: from [64.47.51.130] (helo=exchange.timetra.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DOfWf-0005Lk-UJ for l2vpn@ietf.org; Thu, 21 Apr 2005 13:31:42 -0400 Received: from vkompellaxp ([172.22.184.202] unverified) by exchange.timetra.com with Microsoft SMTPSVC(5.0.2195.6713); Thu, 21 Apr 2005 10:19:38 -0700 From: "Vach Kompella" To: , Date: Thu, 21 Apr 2005 10:19:37 -0700 Organization: Alcatel USA Message-ID: <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4024 In-Reply-To: <002201c53ae4$45ea1390$cab816ac@eng.timetra.com> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-OriginalArrivalTime: 21 Apr 2005 17:19:38.0409 (UTC) FILETIME=[4C00D990:01C54696] X-Spam-Score: 0.0 (/) X-Scan-Signature: 9466e0365fc95844abaf7c3f15a05c7d Content-Transfer-Encoding: quoted-printable Cc: Subject: RE: WG Last Call on ARP mediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: vach.kompella@alcatel.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Two weeks are almost up, and there have been no comments on this draft. Either everyone is comfortable with the draft, or no one cares. In either case, we would like to hear comments. -Vach=20 > -----Original Message----- > From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org]=20 > On Behalf Of Vach Kompella > Sent: Wednesday, April 06, 2005 1:08 PM > To: l2vpn@ietf.org > Subject: WG Last Call on ARP mediation=20 > draft:draft-ietf-l2vpn-arp-mediation-01.txt >=20 >=20 > Folks, >=20 > We are starting a 2 week working group Last Call on the ARP=20 > mediation draft. Please read and send comments to the list. >=20 > Thanks. >=20 > Vach Kompella > IP Division, Alcatel > vach.kompella@alcatel.com > +1 650 623-2556 >=20 >=20 From l2vpn-bounces@ietf.org Thu Apr 21 15:04:53 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOgyr-0003Tt-Eo; Thu, 21 Apr 2005 15:04:53 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOgyq-0003Ti-4l for l2vpn@megatron.ietf.org; Thu, 21 Apr 2005 15:04:52 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA26963 for ; Thu, 21 Apr 2005 15:04:50 -0400 (EDT) Received: from omr1.netsolmail.com ([216.168.230.162]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DOhAJ-0007no-Mz for l2vpn@ietf.org; Thu, 21 Apr 2005 15:16:44 -0400 Received: from ms9.netsolmail.com (IDENT:mirapoint@[216.168.230.183]) by omr1.netsolmail.com (8.12.10/8.12.10) with ESMTP id j3LJ44Th021053; Thu, 21 Apr 2005 15:04:25 -0400 (EDT) Received: from ms9.netsolmail.com (localhost.netsolmail.com [127.0.0.1]) by ms9.netsolmail.com (Mirapoint Messaging Server MOS 3.2.2-GA) with ESMTP id CZT01355; Thu, 21 Apr 2005 15:04:03 -0400 (EDT) Message-Id: <200504211904.CZT01355@ms9.netsolmail.com> Received: from 81.178.20.174 by ms9.netsolmail.com (Mirapoint Messaging Server MOS 3.2.2-GA) with HTTP/1.1; Thu, 21 Apr 2005 20:04:02 +0100 Date: Thu, 21 Apr 2005 20:04:02 +0100 From: Mark Lewis To: vach.kompella@alcatel.com X-Mailer: Webmail Mirapoint Direct 3.2.2-GA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Spam-Score: 0.8 (/) X-Scan-Signature: a87a9cdae4ac5d3fbeee75cd0026d632 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org Subject: Re: FW: WG Last Call on ARP mediationdraft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mark@mjlnet.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org SGkgVmFjaCwNCg0KSSBoYXZlIGFkZGVkIGNvbW1lbnRzIGlubGluZSBiZWxvdy4gUGxlYXNl IGV4Y3VzZSBhbnkNCm9mZi10aGUtbWFyayBjb21tZW50cyB0aGF0IEkgbWF5IGhhdmUgYWRk ZWQgaW4gbXkgaGFzdGUgdG8NCnJldmlldyBpdCBhbmQgdGhlbiBnZXQgYmFjayB0byB3aGF0 IEkgc2hvdWxkIHJlYWxseSBiZSBkb2luZw0KcmlnaHQgbm93ICh3b3JrISkuDQoNCkhvcGUg aXQncyB1c2VmdWwhDQoNCk1hcmsgTGV3aXMNCg0KDQoNCg0KDQogICAgICANCkFic3RyYWN0 ICANCiAgICAgDQpJbiBwYXJ0aWN1bGFyLCB0aGUgYXBwbGljYWJpbGl0eSBvZiBBUlAgbWVk aWF0aW9uIHRvIElTSVMgaXMNCm5vdCBhZGRyZXNzZWQuDQoNCg0KKioqKklzIGl0IHdvcnRo IG1lbnRpb25pbmcgdGhhdCBBUlAgbWVkaWF0aW9uIGlzIG5vdCByZWxldmFudA0KaW4gdGhl IGNhc2Ugb2YgSVAgbW9kZSBpbnRlcndvcmtpbmcgc2ltcGx5IGJlY2F1c2UgSVMtSVMgUERV cw0KYXJlIG5vdCBzZW50IG92ZXIgSVA/DQoNCg0KICANCiAgICAgDQoNCiAgICAgDQoxLjAg SW50cm9kdWN0aW9uIA0KICAgICANCkluIHRoZW9yeSwgTDJWUE5zIGNhbiBjYXJyeSBhbnkg 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dCBtYXkgZGVmYXVsdCB0byBhbiBPU1BGIG5ldHdvcmsgdHlwZSBvZiBOQk1BPz8NCiAgICAg DQogICAgIA0KDQoNCg0K From l2vpn-bounces@ietf.org Thu Apr 21 15:24:40 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOhI0-0005xu-SG; Thu, 21 Apr 2005 15:24:40 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOhHy-0005xp-QY for l2vpn@megatron.ietf.org; Thu, 21 Apr 2005 15:24:38 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id PAA29487 for ; Thu, 21 Apr 2005 15:24:37 -0400 (EDT) Received: from rwcrmhc13.comcast.net ([204.127.198.39]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DOhTR-0008HM-Tm for l2vpn@ietf.org; Thu, 21 Apr 2005 15:36:31 -0400 Received: from default.mail.com (a80-127-103-134.adsl.xs4all.nl[80.127.103.134]) by comcast.net (rwcrmhc13) with SMTP id <2005042119242601500g9nf8e>; Thu, 21 Apr 2005 19:24:27 +0000 Message-Id: <6.2.1.2.2.20050421152354.069cbd80@mail.comcast.net> X-Mailer: QUALCOMM Windows Eudora Version 6.2.1.2 Date: Thu, 21 Apr 2005 15:24:22 -0400 To: vach.kompella@alcatel.com From: "Andrew G. Malis" In-Reply-To: <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> References: <002201c53ae4$45ea1390$cab816ac@eng.timetra.com> <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Spam-Score: 3.5 (+++) X-Scan-Signature: 69a74e02bbee44ab4f8eafdbcedd94a1 Cc: l2vpn@ietf.org, vach.kompella@alcatel.com Subject: RE: WG Last Call on ARP mediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Vach, It's an awesome draft. Thanks, Andy (a co-author) At 4/21/2005 10:19 -0700, Vach Kompella wrote: >Two weeks are almost up, and there have been no comments on this draft. >Either everyone is comfortable with the draft, or no one cares. In >either case, we would like to hear comments. > >-Vach > > > -----Original Message----- > > From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org] > > On Behalf Of Vach Kompella > > Sent: Wednesday, April 06, 2005 1:08 PM > > To: l2vpn@ietf.org > > Subject: WG Last Call on ARP mediation > > draft:draft-ietf-l2vpn-arp-mediation-01.txt > > > > > > Folks, > > > > We are starting a 2 week working group Last Call on the ARP > > mediation draft. Please read and send comments to the list. > > > > Thanks. > > > > Vach Kompella > > IP Division, Alcatel > > vach.kompella@alcatel.com > > +1 650 623-2556 > > > > From l2vpn-bounces@ietf.org Fri Apr 22 06:09:51 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOv6d-0002uG-1U; Fri, 22 Apr 2005 06:09:51 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DOv6b-0002uB-HK for l2vpn@megatron.ietf.org; Fri, 22 Apr 2005 06:09:49 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id GAA00704 for ; Fri, 22 Apr 2005 06:09:47 -0400 (EDT) Received: from oberon.imc.kth.se ([193.10.152.20]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DOvIC-00063C-Uq for l2vpn@ietf.org; Fri, 22 Apr 2005 06:21:49 -0400 Received: from mail1.imc.kth.se (mail1.imc.kth.se [193.10.152.140]) by oberon.imc.kth.se (8.11.6/8.11.6) with ESMTP id j3MA7dN15155 for ; Fri, 22 Apr 2005 12:07:39 +0200 Received: from [127.0.0.1] ([172.16.2.232]) by mail1.imc.kth.se; Fri, 22 Apr 2005 12:07:25 +0200 Message-ID: <4268CCD7.3040803@pi.se> Date: Fri, 22 Apr 2005 12:07:19 +0200 From: Loa Andersson User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040803 X-Accept-Language: en-us, en MIME-Version: 1.0 To: mpls@ietf.org, L2VPN Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) X-Scan-Signature: b1c41982e167b872076d0018e4e1dc3c Content-Transfer-Encoding: 7bit Cc: Rick Wilder , Alex Zinin , Bill Fenner , Mark Townsley , Margaret Wasserman , Vach Kompella Subject: Summary: mpls wg review of the draft-ietf-l2vpn-vpls-ldp-06.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org All, the mpls wg review of the draft-ietf-l2vpn-vpls-ldp-06.txt has ended. The comments sent to the list has been scarce. We have received a few comments off-line, and also comments from four reviewers that we asked to review the documents. We want to thank Bob T, Ina, Eric G and Dimitri for their reviews. Part of their comments are very useful as "wg chair comments" and will be sent to ADs and authors. Below are the major points captured, based on the reviewer input. Targeted LDP sessions ---------------------- One recurring theme is that a choice to use LDP to signaling vpls de-multiplexors will lead to a full mesh of targeted ldp session between PEs. It has been appointed out that this will potentially cause scaling problems. WG-chair comment: LDP was never intended to support a full mesh of targeted LDP sessions. If LDP is used in this way it must clearly be stated that this is a factor that will limit the scaling of the vpls application, However this is nothing the changes or affects the workings of other usages of LDP. This is local to this draft and should be handled here. MAC List TLV: ------------- A second point is made that the added TLV "MAC List TLV" is an example of using LDP for something it was not intended for. One issue here is that the already, as compared to a routing protocol, long LDP convergence time could be even longer. This will have effects on both "traditional" LDP convergence and the vpls application. The encoding of this TLV is not clearly defined. First the diagram of the TLV depicts MAC addresses that are only 4 bytes long. Second, given the historic confusion between IEEE and IETF encodings some discussion of bit and byte order and some pointers to documents such as RFC1042 would be in order. WG-chair comment: The MPLS working group is concerned about this issue. However we need a better understanding of the dynamics involved before a recommendation can be made. The text on the usage of this TLV is very difficult to parse. Some clean-up is needed. Further use of this TLV should be incorporated into the examples. Use of Generalized PWid FEC Element ----------------------------------- Several fields are not clearly specified. E.g. in section 4.1.1: >> Control bit (C): Depending on whether, on that particular PW, the >> control word is desired or not, the control bit may be specified. simply say: This bit is used to signal use of the control word as specified in [PWE3-CTRL]. >> PW type: The allowed PW types in this version are Ethernet and >> Ethernet VLAN. The phrase "in this version" should be deleted. >> AGI Type field Either a value should be specified (along with a corresponding format) or it should be stated how values are to be selected. >> - Requested VLAN ID: If the PW type is Ethernet VLAN, this >> parameter may be used to signal the insertion of the >> appropriate VLAN ID. This looks under specified. >> Section 7. Operation of a VPLS Since FEC 128 has been moved to an appendix, this section should be recast in terms of FEC 129. >> Section 8.2.2. Failure detection and recovery The hello message only detect control plane failures and not at a particularly fast rate. If fast detection is needed, then VCCV or BFD on the PSN tunnel should be employed. MD5 and security ---------------- A third point that has been made is that the security considerations of the LDP specification were never designed to meet the requirements of VPLS. WG-chair comment: This would definitely be of great concern, but again it does not effect the LDP as a protocol but is limited to the usage of LDP in this application. /Loa and George -- Loa Andersson Principal Networking Architect Acreo AB phone: +46 8 632 77 14 Isafjordsgatan 22 mobile: +46 739 81 21 64 Kista, Sweden email: loa.andersson@acreo.se loa@pi.se From l2vpn-bounces@ietf.org Mon Apr 25 12:53:49 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQ6qD-0004YL-RP; Mon, 25 Apr 2005 12:53:49 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQ6qB-0004YD-LO; Mon, 25 Apr 2005 12:53:47 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id MAA01198; Mon, 25 Apr 2005 12:53:44 -0400 (EDT) Received: from rtp-iport-1.cisco.com ([64.102.122.148]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQ72S-00088S-5U; Mon, 25 Apr 2005 13:06:29 -0400 Received: from rtp-core-1.cisco.com (64.102.124.12) by rtp-iport-1.cisco.com with ESMTP; 25 Apr 2005 13:05:35 -0400 X-IronPort-AV: i="3.92,128,1112587200"; d="scan'208"; a="45993846:sNHT30938128" Received: from [209.245.27.1] ([10.32.241.115]) by rtp-core-1.cisco.com (8.12.10/8.12.6) with SMTP id j3PGrVRQ010675; Mon, 25 Apr 2005 12:53:32 -0400 (EDT) Message-ID: <426D208A.7020603@cisco.com> Date: Mon, 25 Apr 2005 10:53:30 -0600 From: Luca Martini User-Agent: Mozilla Thunderbird 1.0 (X11/20041208) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Loa Andersson References: <4268CCD7.3040803@pi.se> In-Reply-To: <4268CCD7.3040803@pi.se> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-PMX-Version: 4.7.0.111621 X-from-outside-Cisco: [10.32.241.115] X-Spam-Score: 0.0 (/) X-Scan-Signature: 93e7fb8fef2e780414389440f367c879 Content-Transfer-Encoding: 7bit Cc: L2VPN , mpls@ietf.org, Rick Wilder , Bill Fenner , Mark Townsley , Margaret Wasserman , Alex Zinin , Vach Kompella Subject: Re: Summary: mpls wg review of the draft-ietf-l2vpn-vpls-ldp-06.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Loa, Comments in line... ..... > > Targeted LDP sessions > ---------------------- > One recurring theme is that a choice to use LDP to signaling > vpls de-multiplexors will lead to a full mesh of targeted > ldp session between PEs. It has been appointed out that this > will potentially cause scaling problems. > > WG-chair comment: LDP was never intended to support a full mesh of > targeted LDP sessions. > > > If LDP is used in this way it must clearly be stated that this is a > factor that will limit the scaling of the vpls application, > However this is nothing the changes or affects the workings of > other usages of LDP. This is local to this draft and should be > handled here. > I would like someone to actually substantiate that there would be a problem with a large number of targeted LDP sessions. It had been my experience that targeted LDP scales very easily beyond any number of session that would be deployed in this application. This is NOT BGP ! Let's not just assume that because BGP with hundreds of thousands routes, and very complex policies , does not scale in a full mesh environment, LDP will have the same fate. > MAC List TLV: > ------------- > A second point is made that the added TLV "MAC List TLV" > is an example of using LDP for something it was not intended > for. One issue here is that the already, as compared to a routing > protocol, long LDP convergence time could be even longer. This > will have effects on both "traditional" LDP convergence and the > vpls application. > As far as i remember , this is a TLV that is going to be used to indicate withdrawal of the mac addresses. When there is a link failure LDP does not advertise new IP label mappings, hence the only "slow down" will be in possibly withdrawing LDP IP label mappings ... And since these are targeted sessions it very likely that there will be no LDP ip label mappings in the first place. Nobody should care about LDP withdrawing IP label mapping , as the IGP is the master , and determines the convergence time. So what is going to be slowed down ? > The encoding of this TLV is not clearly defined. > First the diagram of the TLV depicts MAC addresses that are > only 4 bytes long. > Second, given the historic confusion between IEEE and IETF > encodings some discussion of bit and byte order and some > pointers to documents such as RFC1042 would be in order. > > WG-chair comment: > The MPLS working group is concerned about this issue. However > we need a better understanding of the dynamics involved before > a recommendation can be made. > > The text on the usage of this TLV is very difficult to parse. > Some clean-up is needed. Further use of this TLV should be > incorporated into the examples. > > Use of Generalized PWid FEC Element > ----------------------------------- > > Several fields are not clearly specified. > > E.g. in section 4.1.1: > >> Control bit (C): Depending on whether, on that particular PW, the > >> control word is desired or not, the control bit may be specified. > > > simply say: > > This bit is used to signal use of the control word as specified in > [PWE3-CTRL]. > > > >> PW type: The allowed PW types in this version are Ethernet and > >> Ethernet VLAN. > > > The phrase "in this version" should be deleted. > > > >> AGI Type field > > Either a value should be specified (along with a corresponding format) > or it should be stated how values are to be selected. > > > >> - Requested VLAN ID: If the PW type is Ethernet VLAN, this > >> parameter may be used to signal the insertion of the > >> appropriate VLAN ID. > > > This looks under specified. > > > >> Section 7. Operation of a VPLS > > Since FEC 128 has been moved to an appendix, this section should be > recast in terms of FEC 129. > > >> Section 8.2.2. Failure detection and recovery > > The hello message only detect control plane failures and not at a > particularly fast rate. If fast detection is needed, then > VCCV or BFD on the PSN tunnel should be employed. > > > MD5 and security > ---------------- > > A third point that has been made is that the security > considerations of the LDP specification were never designed > to meet the requirements of VPLS. > > WG-chair comment: This would definitely be of great concern, > but again it does not effect the LDP as a protocol but is > limited to the usage of LDP in this application. > this document should probably point to the pwe3 document and it's security section ... Luca > > /Loa and George > From l2vpn-bounces@ietf.org Mon Apr 25 16:09:55 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQ9ty-0004O2-UR; Mon, 25 Apr 2005 16:09:54 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQ9tu-0004NU-L1; Mon, 25 Apr 2005 16:09:52 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id QAA17918; Mon, 25 Apr 2005 16:09:43 -0400 (EDT) Received: from mail.riverstonenet.com ([63.113.148.10] helo=riverstonenet.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQA67-0006wR-9s; Mon, 25 Apr 2005 16:22:29 -0400 Received: from IBMT41ML by riverstonenet.com (8.9.3+Sun/SMI-SVR4-Yago) id NAA05002; Mon, 25 Apr 2005 13:09:24 -0700 (PDT) Message-ID: <039a01c549d2$a59851b0$6501a8c0@IBMT41ML> From: "Marc Lasserre" To: "Luca Martini" , "Loa Andersson" References: <4268CCD7.3040803@pi.se> <426D208A.7020603@cisco.com> Date: Mon, 25 Apr 2005 22:09:04 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Spam-Score: 0.0 (/) X-Scan-Signature: 995b2e24d23b953c94bac5288c432399 Content-Transfer-Encoding: 7bit Cc: L2VPN , mpls@ietf.org, Rick Wilder , Bill Fenner , Mark Townsley , Margaret Wasserman , Vach Kompella Subject: Re: [mpls] Re: Summary: mpls wg review of thedraft-ietf-l2vpn-vpls-ldp-06.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Besides agreeing with Luca's comments, I'd like to add that the VPLS-LDP draft specifies how to reduce the size of the T-LDP full mesh through hierarchical constructs in order to prevent scalability problems with a large number of LDP adjacencies. Existing deployments have demonstrated that large full mesh designs have not caused scalabilty problems. As far as MAC withdrawal is concerned, it is only used when a primary AC fails, specifically in the case of dual-homed MTUs. Hence, I do not see why LDP convergence time should be impacted. I agree with the other comments from the group which call for clarification. Marc ----- Original Message ----- From: "Luca Martini" To: "Loa Andersson" Cc: "L2VPN" ; ; "Rick Wilder" ; "Bill Fenner" ; "Mark Townsley" ; "Margaret Wasserman" ; "Vach Kompella" Sent: Monday, April 25, 2005 6:53 PM Subject: [mpls] Re: Summary: mpls wg review of thedraft-ietf-l2vpn-vpls-ldp-06.txt > Loa, > > Comments in line... > > ..... > >> >> Targeted LDP sessions >> ---------------------- >> One recurring theme is that a choice to use LDP to signaling >> vpls de-multiplexors will lead to a full mesh of targeted >> ldp session between PEs. It has been appointed out that this >> will potentially cause scaling problems. >> >> WG-chair comment: LDP was never intended to support a full mesh of >> targeted LDP sessions. >> >> >> If LDP is used in this way it must clearly be stated that this is a >> factor that will limit the scaling of the vpls application, >> However this is nothing the changes or affects the workings of >> other usages of LDP. This is local to this draft and should be >> handled here. >> > I would like someone to actually substantiate that there would be a > problem with a large number of targeted LDP sessions. > It had been my experience that targeted LDP scales very easily beyond any > number of session that would be deployed in this application. > This is NOT BGP ! Let's not just assume that because BGP with hundreds of > thousands routes, and very complex policies , does not scale in a full > mesh environment, LDP will have the same fate. > > >> MAC List TLV: >> ------------- >> A second point is made that the added TLV "MAC List TLV" >> is an example of using LDP for something it was not intended >> for. One issue here is that the already, as compared to a routing >> protocol, long LDP convergence time could be even longer. This >> will have effects on both "traditional" LDP convergence and the >> vpls application. >> > > As far as i remember , this is a TLV that is going to be used to indicate > withdrawal of the mac addresses. > When there is a link failure LDP does not advertise new IP label mappings, > hence the only "slow down" will be in possibly withdrawing LDP IP label > mappings ... > And since these are targeted sessions it very likely that there will be no > LDP ip label mappings in the first place. > Nobody should care about LDP withdrawing IP label mapping , as the IGP is > the master , and determines the convergence time. > So what is going to be slowed down ? > >> The encoding of this TLV is not clearly defined. >> First the diagram of the TLV depicts MAC addresses that are >> only 4 bytes long. >> Second, given the historic confusion between IEEE and IETF >> encodings some discussion of bit and byte order and some >> pointers to documents such as RFC1042 would be in order. >> >> WG-chair comment: >> The MPLS working group is concerned about this issue. However >> we need a better understanding of the dynamics involved before >> a recommendation can be made. >> >> The text on the usage of this TLV is very difficult to parse. >> Some clean-up is needed. Further use of this TLV should be >> incorporated into the examples. >> >> Use of Generalized PWid FEC Element >> ----------------------------------- >> >> Several fields are not clearly specified. >> >> E.g. in section 4.1.1: >> >> Control bit (C): Depending on whether, on that particular PW, the >> >> control word is desired or not, the control bit may be specified. >> >> >> simply say: >> >> This bit is used to signal use of the control word as specified in >> [PWE3-CTRL]. >> >> >> >> PW type: The allowed PW types in this version are Ethernet and >> >> Ethernet VLAN. >> >> >> The phrase "in this version" should be deleted. >> >> >> >> AGI Type field >> >> Either a value should be specified (along with a corresponding format) >> or it should be stated how values are to be selected. >> >> >> >> - Requested VLAN ID: If the PW type is Ethernet VLAN, this >> >> parameter may be used to signal the insertion of the >> >> appropriate VLAN ID. >> >> >> This looks under specified. >> >> >> >> Section 7. Operation of a VPLS >> >> Since FEC 128 has been moved to an appendix, this section should be >> recast in terms of FEC 129. >> >> >> Section 8.2.2. Failure detection and recovery >> >> The hello message only detect control plane failures and not at a >> particularly fast rate. If fast detection is needed, then >> VCCV or BFD on the PSN tunnel should be employed. >> >> >> MD5 and security >> ---------------- >> >> A third point that has been made is that the security >> considerations of the LDP specification were never designed >> to meet the requirements of VPLS. >> >> WG-chair comment: This would definitely be of great concern, >> but again it does not effect the LDP as a protocol but is >> limited to the usage of LDP in this application. >> > this document should probably point to the pwe3 document and it's > security section ... > > Luca > >> >> /Loa and George >> > > _______________________________________________ > mpls mailing list > mpls@lists.ietf.org > https://www1.ietf.org/mailman/listinfo/mpls > > From l2vpn-bounces@ietf.org Mon Apr 25 17:19:57 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQAzl-0000TS-34; Mon, 25 Apr 2005 17:19:57 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQAzi-0000TN-WB for l2vpn@megatron.ietf.org; Mon, 25 Apr 2005 17:19:55 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA00789 for ; Mon, 25 Apr 2005 17:19:52 -0400 (EDT) Received: from hen.cisco.com ([64.102.19.198] helo=av-tac-rtp.cisco.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQBC0-0003Wb-NN for l2vpn@ietf.org; Mon, 25 Apr 2005 17:32:39 -0400 X-TACSUNS: Virus Scanned Received: from rooster.cisco.com (localhost [127.0.0.1]) by av-tac-rtp.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3PLJhD29783; Mon, 25 Apr 2005 17:19:43 -0400 (EDT) Received: from [64.102.51.195] (dhcp-64-102-51-195.cisco.com [64.102.51.195]) by rooster.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3PLJho09342; Mon, 25 Apr 2005 17:19:43 -0400 (EDT) Message-ID: <426D5EEE.3090006@cisco.com> Date: Mon, 25 Apr 2005 17:19:42 -0400 From: Carlos Pignataro Organization: cisco Systems, Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050317 Thunderbird/1.0.2 Mnenhy/0.7 X-Accept-Language: en-us, en MIME-Version: 1.0 To: vach.kompella@alcatel.com References: <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> In-Reply-To: <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> X-Enigmail-Version: 0.91.0.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by av-tac-rtp.cisco.com id j3PLJhD29783 X-Spam-Score: 0.0 (/) X-Scan-Signature: 40161b1d86420e0807d771943d981d25 Content-Transfer-Encoding: quoted-printable Cc: l2vpn@ietf.org Subject: Re: WG Last Call on ARP mediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Vach, Please find some comments inlined below. Hope they are useful and it's not too late ;-) 3.0 IP Layer 2 Interworking Circuits: The IP Layer 2 Interworking Circuits refer to Pseudowires that carry IP datagrams as payload. The ingress PE removes the data link header of its local Attachment Circuit and transmits the payload (an IP frame) over the Pseudowire with or without the optional control word. The egress PE encapsulates the IP packet with the data link header used on its local Attachment Circuit. The IP Pseudowire encapsulation is described in [PWE3-IANA]. ***** [PWE3-IANA] (or AFAIK any other place) does not specify that `IP Layer2 Transport' is to be used for IPv4 only or IPv6 as well; the IP version discriminates between the 2 on data packets. However, this document does not mention IPv6. __________ 4.2 CE Devices Using ARP: Once the local CE has been discovered for the given Attachment Circuit, the local PE responds to subsequent ARP requests from that device with its own MAC address. ***** The local PE shouldn't proxy the ARPs until the remote CE's IP address's been discovered & signaled, and only when the destination protocol address matches the remote CE's IP addr. __________ 4.2 CE Devices Using ARP: The local PE signals the CE=C6=B3 IP address to the remote PE and may initiate an unsolicited ARP response to notify local CE MAC address to IP address binding of the remote CE. ***** At this point, the local PE may not know the remote CE's IP. Does initiating the unsolicited ARP refer to the remote PE? __________ 4.4 CE Devices Using PPP: . If the local PE does not know the IP address of the local CE, it generates a configure-request without the configure IP address TLV. ***** An IPCP Configure-Request without IP Address option is to be sent if the local PE does not know the IP address of the _remote_ CE instead of the "local CE"? This section is about discovering the local CE's IP address, and if the remote CE's IP address is known, why not send it in the Configure-Request? ***** Also, what to do if the conditions in this and next bullet both apply (i.e. PE does not know local CE's address but does know remote CE's address)? __________ 4.4 CE Devices Using PPP: The response from CE is accepted as IP address of the local CE. ***** The response of the local CE would be a CONFACK, CONFNACK or other, depending on whether it's configured to require the IP from the peer; however, it seems to me that the IP address of the local CE should be taken from the `IP Address Option' in the local CE's IPCP Configure-Request and not from the response from the CE, as these are double negotiations. __________ 4.4 CE Devices Using PPP: . If PE knows the IP address of the remote CE, it sends an IPCP configure-request with the IP address of the remote CE in the configure IP address TLV ***** Probably `in the IP Address configuration Option' is more clear; this however seems to be the mechanism to signal the local CE about the remote CE's IP address, and not to discover the local CE's IP. __________ 4.4 CE Devices Using PPP: . If the local PE receives an IPCP configure-request without the configure IP address TLV, and if it knows the IP address of the remote CE, it responds with configure NAK with the configure IP address TLV set with remote CE=C6=B3 IP address. ***** Wouldn't this procedure "assign" the remote CE's IP address to the local CE? The value in the Configure-Nak indentifies a "value acceptable to the Configure-Nak sender." If the idea is to tell the CE that it must send an IP Address option, from RFC1661: "Finally, an implementation may be configured to request the negotiation of a specific Configuration Option. If that option is not listed, then that option MAY be appended to the list of Nak'd Configuration Options, in order to prompt the peer to include that option in its next Configure-Request packet. Any value fields for the option MUST indicate values acceptable to the Configure-Nak sender." There's also this text that applies from RFC1332: "If negotiation about the remote IP-address is required, and the peer did not provide the option in its Configure-Request, the option SHOULD be appended to a Configure-Nak. The value of the IP-address given must be acceptable as the remote IP-address, or indicate a request that the peer provide the information." In any case, it seems to me the CONFNAK should not contain the remote CE's IP address as the value. __________ 4.4 CE Devices Using PPP: However, if PE does not know the remote CE=C6=B3 IP address yet, it responds with a configure NAK. . If the local PE does not know the IP address of the remote CE, it sends an IPCP configure-request with IP address as zero. The response from CE is recorded and used to validate the incoming remote CE=C6=B3 IP address via PW signaling. ***** An IP Address option of zero means that the peer should assign the sender's IP address. From RFC1332: "If all four octets are set to zero, it indicates a request that the peer provide the IP-Address information." So in this case the response from the CE would be a Configure-Nak with the IP address to use (assigned) if configured to do so; the CE local CE could assign an IP address but would not know the remote CE's address. Unless I'm mis-interpreting the bullet. __________ 4.4 CE Devices Using PPP: The local PE must deny configurations such as header compression and encryptions in the NCP packets with such options. ***** Does the above mean `IP-Compression-Protocol Option for IPCP and other NCPs'? __________ 4.5 Router Discovery method: In order to learn the IP address of the CE device for a given Attachment Circuit, the PE device may execute Router Discovery Protocol [RFC 1256] whereby a Router Discovery Request (ICMP ? router solicitation) message is sent using a source IP address of zero. The IP address of the CE device is extracted from the Router Discovery Response (ICMP ?ter advertisement) message from the CE. ***** What if the ICMP Router advertisement message contains multiple Router Addresses with the same preference level? __________ 5.2 LDP Based Distribution: In addition, this document defines an IP address TLV that must be included as an optional parameter in the Label Mapping message when advertising the PW FEC for the IP L2 Interworking Circuit. The use of optional parameters in the Label Mapping message to extend the attributes of the PW FEC is specified in the [PWE3-Control]. ***** Is the must in the first sentence above a MUST? What are the U and F bits set to? __________ 6.1 CE Devices Using ARP: The PE must respond only to those ARP requests whose destination protocol address matches the remote CE's IP address. ***** Is this s/must/MUST/? __________ 6.3 CE Devices Using PPP: When the PE learns the remote CE's IP address, it should initiate the Configure-Request using the remote CE's IP address or respond to pending Configure-Request from the local CE. ***** Shouldn't it do both, independently? Ack the Configure-Request from the CE (when the PE discovered the local CE's address) _and_ issue a Configure-Request proxying the remote CE's IP address to inform the local CE? __________ 6.3 CE Devices Using PPP: As noted earlier, all other configuration options related to compression, encryptions, etc., should be rejected. ***** IPCP Option 2 and other NCPs? Thanks, --Carlos. Circa 4/21/2005 1:19 PM, Vach Kompella said the following: > Two weeks are almost up, and there have been no comments on this draft. > Either everyone is comfortable with the draft, or no one cares. In > either case, we would like to hear comments. >=20 > -Vach=20 >=20 >=20 >>-----Original Message----- >>From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org]=20 >>On Behalf Of Vach Kompella >>Sent: Wednesday, April 06, 2005 1:08 PM >>To: l2vpn@ietf.org >>Subject: WG Last Call on ARP mediation=20 >>draft:draft-ietf-l2vpn-arp-mediation-01.txt >> >> >>Folks, >> >>We are starting a 2 week working group Last Call on the ARP=20 >>mediation draft. Please read and send comments to the list. >> >>Thanks. >> >>Vach Kompella >>IP Division, Alcatel >>vach.kompella@alcatel.com >>+1 650 623-2556 >> >> >=20 >=20 --=20 --Carlos. Escalation RTP - cisco Systems From l2vpn-bounces@ietf.org Mon Apr 25 17:39:31 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQBIh-0002vz-32; Mon, 25 Apr 2005 17:39:31 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQBIf-0002vi-3f for l2vpn@megatron.ietf.org; Mon, 25 Apr 2005 17:39:29 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA02152 for ; Mon, 25 Apr 2005 17:39:26 -0400 (EDT) Received: from lin1-118-39-27.ciena.com ([63.118.39.27] helo=mdmxm02.ciena.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQBUz-0004D3-0b for l2vpn@ietf.org; Mon, 25 Apr 2005 17:52:13 -0400 Received: from mamxm01.ciena.com ([10.172.0.155]) by mdmxm02.ciena.com with Microsoft SMTPSVC(6.0.3790.211); Mon, 25 Apr 2005 17:39:10 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Date: Mon, 25 Apr 2005 17:39:09 -0400 Message-ID: Thread-Topic: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt Thread-Index: AcVJ3LVBnQaTKQWzTgyjhKWFgf5wWwAAdujQ From: "Shah, Himanshu" To: "Carlos Pignataro" , X-OriginalArrivalTime: 25 Apr 2005 21:39:10.0020 (UTC) FILETIME=[370F2040:01C549DF] X-Spam-Score: 0.0 (/) X-Scan-Signature: 33cc095b503da4365ce57c727e553cf1 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org Subject: RE: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org SGkgQ2FybG9zLA0KDQpUaGFua3MgZm9yIHlvdXIgY29tbWVudHMuDQpJIHNjYW5uZWQgdGhyb3Vn 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helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQPjp-0003LX-RC for l2vpn@megatron.ietf.org; Tue, 26 Apr 2005 09:04:29 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA05943 for ; Tue, 26 Apr 2005 09:04:28 -0400 (EDT) Received: from napoleon.monoski.com ([63.225.114.233]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQPwG-0003YB-KC for l2vpn@ietf.org; Tue, 26 Apr 2005 09:17:22 -0400 Received: from [2.0.1.6] (rasputin-gw [2.0.1.6]) (authenticated bits=0) by napoleon.monoski.com (8.13.2/8.13.2) with ESMTP id j3QD40OD019956; Tue, 26 Apr 2005 07:04:01 -0600 (MDT) Message-ID: <426D9789.90104@cisco.com> Date: Mon, 25 Apr 2005 19:21:13 -0600 From: Luca Martini User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: vach.kompella@alcatel.com References: <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> In-Reply-To: <035a01c54696$4ca88b40$cab816ac@eng.timetra.com> Content-Type: multipart/alternative; boundary="------------050607080201080801030705" X-Scanned-By: MIMEDefang 2.28 (www . roaringpenguin . com / mimedefang) X-Spam-Score: 1.1 (+) X-Scan-Signature: d890c9ddd0b0a61e8c597ad30c1c2176 Cc: l2vpn@ietf.org Subject: Re: WG Last Call on ARP mediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org This is a multi-part message in MIME format... --------------050607080201080801030705 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Disposition: inline Content-Transfer-Encoding: 7bit Vach, I finally had made the time to read this draft. Here are some comments: - I'll say it first ( I'm sure the IESG would say the same ) : there seem to be a bit too many authors. I think this list needs to be trimmed to people you can attribute some text in the document to. I believe 5 authors is the maximum, without having to really justify it. - The introduction section needs to make it clear that A PW of type IP is used. It should reference PWE3-CONTROL. - Please fix all the non-ASCII characters in the document , Lot's of "CE0x??E" and others. you need to turn off MS-word automatic character substitution, or better still use emacs ;-) - Please change all the PWE3-IANA to PWE3-CONTROL. The IANA document only specifies a PW type number , nothing more. - Section 3.0: PWs are bi-directional by definition , so remove the text "bi-directional" - Section 4.2 with the topology restriction to only one CE , promiscuous ARP can be used to really simplify things. The explanation should be added here. - Page 5 has some nordic region O characters in it ... not English. - section 5.2 and page 8. Define the IP Address interface parameter , I believe it has been allocated in IANA so put the number in here. This section needs some major additions. There is no clear description on how to work with the IP interface parameter. What LDP notification message ? I do not recall defining anything other then PW status messages. There is no way to change an interface parameter once the PW is established. ( This is not an auxiliary control channel ... it's static , can only be used once ) - Spacing is wrong at the section 6.0 heading -PWE3 Control draft must be made normative. ( The procedures described here are not implementable without pwe3-control ) Thanks. Luca Vach Kompella wrote: >Two weeks are almost up, and there have been no comments on this draft. >Either everyone is comfortable with the draft, or no one cares. In >either case, we would like to hear comments. > >-Vach > > > >>-----Original Message----- >>From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org] >>On Behalf Of Vach Kompella >>Sent: Wednesday, April 06, 2005 1:08 PM >>To: l2vpn@ietf.org >>Subject: WG Last Call on ARP mediation >>draft:draft-ietf-l2vpn-arp-mediation-01.txt >> >> >>Folks, >> >>We are starting a 2 week working group Last Call on the ARP >>mediation draft. Please read and send comments to the list. >> >>Thanks. >> >>Vach Kompella >>IP Division, Alcatel >>vach.kompella@alcatel.com >>+1 650 623-2556 >> >> >> >> > > > --------------050607080201080801030705 Content-Type: text/html; charset=ISO-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 7bit Vach,

I finally had made the time to read this draft. Here are some comments:

- I'll say it first ( I'm sure the IESG would say the same ) : there seem to be a bit too many authors. I think this list needs to be trimmed to people you can attribute some text in the document to. I believe 5 authors is the maximum, without having to really justify it.
- The introduction section needs to make it clear that A PW of type IP is used. It should reference PWE3-CONTROL.
- Please fix all the non-ASCII characters in the document , Lot's of "CE0x??E" and others. you need to turn off MS-word automatic character substitution, or better still use emacs ;-)
- Please change all the PWE3-IANA to PWE3-CONTROL. The IANA document only specifies a PW type number , nothing more.
- Section 3.0: PWs are bi-directional by definition , so remove the text "bi-directional"
- Section 4.2 with  the topology restriction to only one CE , promiscuous ARP can be used to really simplify things. The explanation should be added here.
- Page 5 has some nordic region O characters in it ... not English.
- section 5.2 and page 8. Define the IP Address interface parameter , I believe it has been allocated in IANA so put the number in here. This section needs some major additions. There is no clear description on how to work with the IP interface parameter. What LDP notification message ? I do not recall defining anything other then PW status messages. There is no way to change an interface parameter once the PW is established. ( This is not an auxiliary control channel ... it's static , can only be used once )
- Spacing is wrong at the section 6.0 heading
-PWE3 Control draft must be made normative. ( The procedures described here are not implementable without pwe3-control )

Thanks.
Luca


Vach Kompella wrote: 
Two weeks are almost up, and there have been no comments on this draft.
Either everyone is comfortable with the draft, or no one cares.  In
either case, we would like to hear comments.

-Vach 

  
-----Original Message-----
From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org] 
On Behalf Of Vach Kompella
Sent: Wednesday, April 06, 2005 1:08 PM
To: l2vpn@ietf.org
Subject: WG Last Call on ARP mediation 
draft:draft-ietf-l2vpn-arp-mediation-01.txt


Folks,

We are starting a 2 week working group Last Call on the ARP 
mediation draft.  Please read and send comments to the list.

Thanks.

Vach Kompella
IP Division, Alcatel
vach.kompella@alcatel.com
+1 650 623-2556

--------------050607080201080801030705-- From l2vpn-bounces@ietf.org Tue Apr 26 11:47:33 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQSHd-0006km-MA; Tue, 26 Apr 2005 11:47:33 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQSHZ-0006kY-Kl for l2vpn@megatron.ietf.org; Tue, 26 Apr 2005 11:47:31 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id LAA20273 for ; Tue, 26 Apr 2005 11:47:27 -0400 (EDT) Received: from lin1-118-39-26.ciena.com ([63.118.39.26] helo=mdmxm01.ciena.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQSU1-0008Ci-2H for l2vpn@ietf.org; Tue, 26 Apr 2005 12:00:23 -0400 Received: from mamxm01.ciena.com ([10.172.0.155]) by mdmxm01.ciena.com with Microsoft SMTPSVC(6.0.3790.211); Tue, 26 Apr 2005 11:47:12 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Date: Tue, 26 Apr 2005 11:47:08 -0400 Message-ID: Thread-Topic: FW: WG Last Call on ARPmediationdraft:draft-ietf-l2vpn-arp-mediation-01.txt Thread-Index: AcVGpRwKPtpLfsRESXSFSwOYWXitKADOi32g From: "Shah, Himanshu" To: , X-OriginalArrivalTime: 26 Apr 2005 15:47:12.0076 (UTC) FILETIME=[363258C0:01C54A77] X-Spam-Score: 0.0 (/) X-Scan-Signature: dbb8771284c7a36189745aa720dc20ab Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org Subject: RE: FW: WG Last Call on ARPmediationdraft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org SGkgTWFyaywNCg0KVGhhbmtzIGZvciB5b3VyIGNvbW1lbnRzLg0KDQpSZXNwb25zZSBpbiBsaW5l 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b24sIEFsY2F0ZWwNCj4gPj52YWNoLmtvbXBlbGxhQGFsY2F0ZWwuY29tDQo+ID4+KzEgNjUwIDYy My0yNTU2DQo+ID4+DQo+ID4+DQo+ID4gDQo+ID4gDQo+IA0KPiAtLSANCj4gLS1DYXJsb3MuDQo+ IEVzY2FsYXRpb24gUlRQIC0gY2lzY28gU3lzdGVtcw0KPiANCj4gDQo= From l2vpn-bounces@ietf.org Tue Apr 26 23:49:37 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQdYP-00059M-Dg; Tue, 26 Apr 2005 23:49:37 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQdYL-00059D-2o for l2vpn@megatron.ietf.org; Tue, 26 Apr 2005 23:49:35 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id XAA21244 for ; Tue, 26 Apr 2005 23:49:30 -0400 (EDT) Received: from hen.cisco.com ([64.102.19.198] helo=av-tac-rtp.cisco.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQdku-0008TV-4e for l2vpn@ietf.org; Wed, 27 Apr 2005 00:02:33 -0400 X-TACSUNS: Virus Scanned Received: from rooster.cisco.com (localhost [127.0.0.1]) by av-tac-rtp.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3R3nJh16215; Tue, 26 Apr 2005 23:49:19 -0400 (EDT) Received: from [192.168.123.127] (rtp-vpn3-209.cisco.com [10.82.216.209]) by rooster.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3R3nHo17868; Tue, 26 Apr 2005 23:49:18 -0400 (EDT) Message-ID: <426F0BBD.8090301@cisco.com> Date: Tue, 26 Apr 2005 23:49:17 -0400 From: Carlos Pignataro Organization: cisco Systems, Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050317 Thunderbird/1.0.2 Mnenhy/0.7 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Shah, Himanshu" References: In-Reply-To: X-Enigmail-Version: 0.91.0.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by av-tac-rtp.cisco.com id j3R3nJh16215 X-Spam-Score: 0.0 (/) X-Scan-Signature: 9a2be21919e71dc6faef12b370c4ecf5 Content-Transfer-Encoding: quoted-printable Cc: l2vpn@ietf.org, vach.kompella@alcatel.com Subject: Re: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Hi Himanshu, Thanks. Please find a couple of follow-up comments inline. Circa 4/26/2005 3:47 PM, Shah, Himanshu said the following: > Hi Carlos and Mark, >=20 > Here is the updated section 4.2 with changes suggested > by you and mark lewis. Please review this for the correctness. >=20 > =3D=3D=3D=3D=3D=3D=3D=3D=3D > 4.4 CE Devices Using PPP >=20 > The IPCP protocol is a two-sided negotiation procedures where CE and PE= can exchange the local IP address configuration > with each other. Since PE does not have IP address of his own, PE proxi= es for remote CE. > When a PPP link becomes operational after the LCP negotiations, the loc= al PE MAY perform following actions > . The PE learns the IP address of the local CE from the Configure-R= equest received with the IP-Address > option (0x03). The PE verifies that the IP address present in the= IP-Address option TLV is=20 > non-zero. If the IP address is zero, PE responds with Configure-R= eject (as this is a request from CE=20 > to assign him an IP address). If the IP address is non-zero, PE r= esponds with Configure-Ack. It may be worth clarifying that in this case the Configure-Reject copies the IP-Address option with null value to instruct the CE to not include that option in the new Configure-Request. > . If the PE receives Configure-Request without the IP-Address optio= n, PE responds with Configure-Ack. > In this case, PE would not learn the IP address of the local CE u= sing IPCP and hence would rely on other means > as described above (such as link-local broadcast from OSPF hello). It may also be noted here that to use the other methods (IRDP, multicast) with PPP, IPCP needs to be open. > =C2=B7 If the PE does not know the IP address of the remote CE, it gene= rates a Configure-Request without the=20 > IP-Address option. > =C2=B7 If the PE knows the IP address of the remote CE, it sends an IPC= P Configure-Request with the IP-Address=20 > option containing the remote CE's IP address. >=20 [snip] >> >> >>4.5 Router Discovery method: >> In order to learn the IP address of the CE device for a given >> Attachment Circuit, the PE device may execute Router Discovery >> Protocol [RFC 1256] whereby a Router Discovery Request (ICMP ? >> router solicitation) message is sent using a source IP address of >> zero. The IP address of the CE device is extracted from the Router >> Discovery Response (ICMP ?ter advertisement) message from the >> CE. >> >> >>***** What if the ICMP Router advertisement message contains multiple >> Router Addresses with the same preference level? >> >> >>__________ >> >=20 >=20 >=20 > himanshu> The network topology recommended mandates that there is one r= outer > himanshu> per attachment circuit. If multiple routers do exist then som= e > himanshu> heuristics is required - such as first on the list or somethi= ng. >=20 >=20 I assumed so, I was just wondering if such text needs to be spelled out. A similar description exists for ARP discovery in Section 4.2. Also, a couple of more nits: o The PW Type description/name in PWE3-IANA is `IP Layer2 Transport' and not `IP L2 interworking' as in Sections 5.1 and 5.2. o The following 3 sentences could be clarified in process (where are packets not propagated and which direction, under which conditions) and scope (applies to all ethernet, ppp, etc?). The first one appears in generic section 4.0 but seems ethernet specific: 1. During the period when the (bi-directional) PW has been established but local CE IP device has not been detected, only datagrams inside of broadcast/multicast frames are propagated; 2. Once this is completed, unicast traffic between two CEs can start flowing. 3. During this period, propagation of unicast IP traffic is suspended, but multicast IP traffic can continue to flow. Thanks, --=20 --Carlos. Escalation RTP - cisco Systems From l2vpn-bounces@ietf.org Wed Apr 27 04:45:03 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQiAI-00059j-Ij; Wed, 27 Apr 2005 04:45:02 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQiAD-00059W-LK for l2vpn@megatron.ietf.org; Wed, 27 Apr 2005 04:45:00 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id EAA15210 for ; Wed, 27 Apr 2005 04:44:55 -0400 (EDT) Received: from omr4.netsolmail.com ([216.168.230.140]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQiMm-0005TC-Og for l2vpn@ietf.org; Wed, 27 Apr 2005 04:58:00 -0400 Received: from ms9.netsolmail.com (IDENT:mirapoint@[216.168.230.183]) by omr4.netsolmail.com (8.12.10/8.12.10) with ESMTP id j3R8gUeD000261; Wed, 27 Apr 2005 04:42:31 -0400 (EDT) Received: from ms9.netsolmail.com (localhost.netsolmail.com [127.0.0.1]) by ms9.netsolmail.com (Mirapoint Messaging Server MOS 3.2.2-GA) with ESMTP id DAN62717; Wed, 27 Apr 2005 04:42:29 -0400 (EDT) Message-Id: <200504270842.DAN62717@ms9.netsolmail.com> Received: from 213.86.11.225 by ms9.netsolmail.com (Mirapoint Messaging Server MOS 3.2.2-GA) with HTTP/1.1; Wed, 27 Apr 2005 09:42:29 +0100 Date: Wed, 27 Apr 2005 09:42:29 +0100 From: Mark Lewis To: hshah@ciena.com X-Mailer: Webmail Mirapoint Direct 3.2.2-GA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Spam-Score: 3.0 (+++) X-Scan-Signature: 2c12be3f3a8d57895fb9c003e1517c01 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, cpignata@cisco.com, vach.kompella@alcatel.com Subject: Re: FW: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mark@mjlnet.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: 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DQo+PiA+IC0tDQo+PiA+IC0tQ2FybG9zLg0KPj4gPiBFc2NhbGF0aW9uIFJUUCAtIGNpc2Nv IFN5c3RlbXMNCj4+ID4NCj4+ID4NCj4+DQo+DQo+DQo= From l2vpn-bounces@ietf.org Wed Apr 27 17:54:05 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQuTt-00083t-D0; Wed, 27 Apr 2005 17:54:05 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DQuTs-000823-AP for l2vpn@megatron.ietf.org; Wed, 27 Apr 2005 17:54:04 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA11300 for ; Wed, 27 Apr 2005 17:53:59 -0400 (EDT) Received: from lin1-118-39-27.ciena.com ([63.118.39.27] helo=mdmxm02.ciena.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DQugZ-0003eC-Ep for l2vpn@ietf.org; Wed, 27 Apr 2005 18:07:11 -0400 Received: from mamxm01.ciena.com ([10.172.0.155]) by mdmxm02.ciena.com with Microsoft SMTPSVC(6.0.3790.211); Wed, 27 Apr 2005 17:53:47 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C54B73.96291C29" Date: Wed, 27 Apr 2005 17:53:46 -0400 Message-ID: Thread-Topic: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt Thread-Index: AcVKYPJrZ5oewKBATm6SYKufRXnZhQAPEBMg From: "Shah, Himanshu" To: "Luca Martini" , X-OriginalArrivalTime: 27 Apr 2005 21:53:47.0042 (UTC) FILETIME=[96A19020:01C54B73] X-Spam-Score: 1.1 (+) X-Scan-Signature: 58b614506802734014829a093beb6879 Cc: l2vpn@ietf.org Subject: RE: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org This is a multi-part message in MIME format. ------_=_NextPart_001_01C54B73.96291C29 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Luca, Thanks for your comments. Responses in line marked with "himanshu>" =20 regards, himanshu -----Original Message----- From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org]On Behalf Of = Luca Martini Sent: Monday, April 25, 2005 9:21 PM To: vach.kompella@alcatel.com Cc: l2vpn@ietf.org Subject: Re: WG Last Call on ARPmediation = draft:draft-ietf-l2vpn-arp-mediation-01.txt Vach, I finally had made the time to read this draft. Here are some comments: - I'll say it first ( I'm sure the IESG would say the same ) : there = seem to be a bit too many authors. I think this list needs to be trimmed = to people you can attribute some text in the document to. I believe 5 = authors is the maximum, without having to really justify it. [himanshu>] Noted.=20 - The introduction section needs to make it clear that A PW of type IP = is used. It should reference PWE3-CONTROL. [himanshu>] Noted.=20 - Please fix all the non-ASCII characters in the document , Lot's of = "CE0x??E" and others. you need to turn off MS-word automatic character = substitution, or better still use emacs ;-) [himanshu>] Noted=20 - Please change all the PWE3-IANA to PWE3-CONTROL. The IANA document = only specifies a PW type number , nothing more. [himanshu>] Noted. =20 - Section 3.0: PWs are bi-directional by definition , so remove the text = "bi-directional" [himanshu>] Noted=20 - Section 4.2 with the topology restriction to only one CE , = promiscuous ARP can be used to really simplify things. The explanation = should be added here.=20 [himanshu>] I am not sure what exact method you have in mind. Can you = elaborate?? - Page 5 has some nordic region O characters in it ... not English. [himanshu>] noted.=20 - section 5.2 and page 8. Define the IP Address interface parameter , I = believe it has been allocated in IANA so put the number in here.=20 [himanshu>] I checked in the latest IANA draft, there is no interface = parameter for IP address. Besides, IP address in not intended to be part = of the interface parameter because that would make it a static PW = attribute. It is intentionally passed in the optional parameter field of = the Label Mapping message as the IP address may not available when the = PW FEC is exchanged. That is, IP L2 Transport PW must be allowed to be = established before the IP address of the local CE is known. This way, = multicast packets can flow (such as OSPF hello) between the CEs, which = in turn causes ETH-CE to ARP for his peer. If ETH-attached PE is = strictly learning CE's IP address from ARP packets, this enables PE to = learn CE's IP address and can now send an update in LDP NOTIFICATION = message. This section needs some major additions. There is no clear description = on how to work with the IP interface parameter. What LDP notification = message ? I do not recall defining anything other then PW status = messages. There is no way to change an interface parameter once the PW = is established. ( This is not an auxiliary control channel ... it's = static , can only be used once ) [himanshu>] That is right. And hence there is no IP interface = parameter. Me and Hamid had written a = draft-shah-pwe3-control-protocol-extension-00.txt back in 2003. This = draft described how PEs can exchange capabilities and PW attributes = thereafter via LDP NOTIFICATION. About 4 cases were sited in that draft, = PW status, PW QOS, CE's IP address and CE's IP and MAC address (used for = IPLS). Out of which, you included the PW status in the base PWE3-control = draft but not others. Well, we need the rest. Since that draft has = expired, I have included the text describing how exchange of CE's IP = address can be conducted as part of optional TLV of the LABEL MAPPING = msg and LABEL NOTIFICATION msg in this draft. Spacing is wrong at the section 6.0 heading [himanshu>] Noted=20 -PWE3 Control draft must be made normative. ( The procedures described = here are not implementable without pwe3-control ) [himanshu>] Noted=20 Thanks. Luca Vach Kompella wrote:=20 Two weeks are almost up, and there have been no comments on this draft. Either everyone is comfortable with the draft, or no one cares. In either case, we would like to hear comments. -Vach=20 =20 -----Original Message----- From: l2vpn-bounces@ietf.org [ mailto:l2vpn-bounces@ietf.org]=20 On Behalf Of Vach Kompella Sent: Wednesday, April 06, 2005 1:08 PM To: l2vpn@ietf.org Subject: WG Last Call on ARP mediation=20 draft:draft-ietf-l2vpn-arp-mediation-01.txt Folks, We are starting a 2 week working group Last Call on the ARP=20 mediation draft. Please read and send comments to the list. Thanks. Vach Kompella IP Division, Alcatel vach.kompella@alcatel.com +1 650 623-2556 =20 =20 ------_=_NextPart_001_01C54B73.96291C29 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Luca,
Thanks for your comments.
Responses in line marked with = "himanshu>"
 
regards,
himanshu
-----Original Message-----
From: = l2vpn-bounces@ietf.org=20 [mailto:l2vpn-bounces@ietf.org]On Behalf Of Luca=20 Martini
Sent: Monday, April 25, 2005 9:21 PM
To:=20 vach.kompella@alcatel.com
Cc: = l2vpn@ietf.org
Subject: Re:=20 WG Last Call on ARPmediation=20 draft:draft-ietf-l2vpn-arp-mediation-01.txt

Vach,

I finally had made the time to read this draft. Here = are=20 some comments:

- I'll say it first ( I'm sure the IESG would = say the=20 same ) : there seem to be a bit too many authors. I think this list = needs to=20 be trimmed to people you can attribute some text in the document to. I = believe=20 5 authors is the maximum, without having to really justify = it.
[himanshu>] Noted. 
- The = introduction=20 section needs to make it clear that A PW of type IP is used. It should = reference PWE3-CONTROL.
[himanshu>] Noted. 
- Please = fix all the=20 non-ASCII characters in the document , Lot's of "CE0x??E" and others. = you need=20 to turn off MS-word automatic character substitution, or better still = use=20 emacs ;-)
[himanshu>] Noted 
- Please=20 change all the PWE3-IANA to PWE3-CONTROL. The IANA document only = specifies a=20 PW type number , nothing more.
[himanshu>] Noted.=20  
- Section 3.0: PWs are bi-directional by = definition ,=20 so remove the text "bi-directional"
[himanshu>] Noted 
- Section = 4.2=20 with  the topology restriction to only one CE , promiscuous ARP = can be=20 used to really simplify things. The explanation should be added here.=20
[himanshu>] I am not sure what = exact method=20 you have in mind. Can you elaborate??
- Page 5 has = some=20 nordic region O characters in it ... not English.
[himanshu>] noted. 
- section = 5.2 and=20 page 8. Define the IP Address interface parameter , I believe it has = been=20 allocated in IANA so put the number in here.
[himanshu>] I checked in the latest IANA draft, there = is no=20 interface parameter for IP address. Besides, IP address in not = intended to be=20 part of the interface parameter because that would make it a static PW = attribute. It is intentionally passed in the optional parameter field = of the=20 Label Mapping message as the IP address may not available when the PW = FEC is=20 exchanged. That is,  IP L2 Transport PW must be allowed to be = established=20 before the IP address of the local CE is known. This way, multicast = packets=20 can flow (such as OSPF hello) between the CEs, which in turn causes = ETH-CE to=20 ARP for his peer. If ETH-attached PE is strictly learning CE's IP = address from=20 ARP packets, this enables PE to learn CE's IP address and can now send = an=20 update in LDP NOTIFICATION message.

 This section needs some = major=20 additions. There is no clear description on how to work with the IP = interface=20 parameter. What LDP notification message ? I do not recall defining = anything=20 other then PW status messages. There is no way to change an interface=20 parameter once the PW is established. ( This is not an auxiliary = control=20 channel ... it's static , can only be used once )
[himanshu>]  That is right. And hence there is = no IP=20 interface parameter. Me and Hamid had written a=20 draft-shah-pwe3-control-protocol-extension-00.txt back in 2003. = This=20 draft described how PEs can exchange capabilities and PW = attributes=20 thereafter via LDP NOTIFICATION. About 4 cases were sited in that = draft,=20 PW status, PW QOS, CE's IP address and CE's IP and MAC address = (used for=20 IPLS). Out of which, you included the PW status in the=20 base PWE3-control draft but not others. Well, we need the rest. = Since=20 that draft has expired, I have included the text describing how = exchange=20 of CE's IP address can be conducted as part of optional TLV of = the LABEL=20 MAPPING msg and LABEL NOTIFICATION msg in this = draft.
  Spacing is wrong at the section 6.0 = heading
[himanshu>] Noted 
-PWE3=20 Control draft must be made normative. ( The procedures described here = are not=20 implementable without pwe3-control )
[himanshu>] Noted 

Thanks.
= Luca


Vach=20 Kompella wrote: 
Two weeks are almost up, and there have =
been no comments on this draft.
Either everyone is comfortable with the draft, or no one cares.  In
either case, we would like to hear comments.

-Vach=20

  
-----Original Message-----
From: l2vpn-bounces@ietf.org [mailto:l2vpn-bounces@ietf.org]=
=20
On Behalf Of Vach Kompella
Sent: Wednesday, April 06, 2005 1:08 PM
To: l2vpn@ietf.org
Subject: WG Last Call on ARP mediation=20
draft:draft-ietf-l2vpn-arp-mediation-01.txt


Folks,

We are starting a 2 week working group Last Call on the ARP=20
mediation draft.  Please read and send comments to the list.

Thanks.

Vach Kompella
IP Division, Alcatel
vach.kompella@alcatel.com
+1 650 623-2556

------_=_NextPart_001_01C54B73.96291C29-- From l2vpn-bounces@ietf.org Thu Apr 28 09:45:01 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DR9K9-0007wA-JF; Thu, 28 Apr 2005 09:45:01 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DR9K8-0007vl-84 for l2vpn@megatron.ietf.org; Thu, 28 Apr 2005 09:45:00 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id JAA15055 for ; Thu, 28 Apr 2005 09:44:58 -0400 (EDT) Received: from wproxy.gmail.com ([64.233.184.205]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DR9Wz-0002xV-By for l2vpn@ietf.org; Thu, 28 Apr 2005 09:58:18 -0400 Received: by wproxy.gmail.com with SMTP id 71so602320wri for ; Thu, 28 Apr 2005 06:44:50 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=BpV/zqoM0rrRfQGJlXtboMnftVExMz+Pffz5GuiQQnqjyPUNA1hvzOT2b0ZBtQ08ab+/33l9SEPplK72aBkmim0MejFOkgnBAPj1kFoFkM3PlBNnaXEpER2u8wEiK+Fk/Z78pOmDKxthRgDSiSUf492b27tIyUDqm2sRdCmp0sc= Received: by 10.54.121.20 with SMTP id t20mr739399wrc; Thu, 28 Apr 2005 06:44:50 -0700 (PDT) Received: by 10.54.70.2 with HTTP; Thu, 28 Apr 2005 06:44:50 -0700 (PDT) Message-ID: Date: Thu, 28 Apr 2005 09:44:50 -0400 From: Rurick Kellermann To: l2vpn@ietf.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-Spam-Score: 0.0 (/) X-Scan-Signature: bb8eae9af85e4fcfe76f325e38493bf4 Content-Transfer-Encoding: quoted-printable Subject: test message - pls. ignore... 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14:12:25 -0400 Received: from mamxm01.ciena.com ([10.172.0.155]) by mdmxm02.ciena.com with Microsoft SMTPSVC(6.0.3790.211); Fri, 29 Apr 2005 13:58:36 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Date: Fri, 29 Apr 2005 13:58:35 -0400 Message-ID: Thread-Topic: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt Thread-Index: AcVK3CuVt6z8WxWyTPyu2R5TG9Cj7QCCIb0w From: "Shah, Himanshu" To: "Carlos Pignataro" X-OriginalArrivalTime: 29 Apr 2005 17:58:36.0667 (UTC) FILETIME=[1104B4B0:01C54CE5] X-Spam-Score: 0.0 (/) X-Scan-Signature: b7b9551d71acde901886cc48bfc088a6 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, vach.kompella@alcatel.com Subject: RE: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org 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96e0f8497f38c15fbfc8f6f315bcdecb Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, cpignata@cisco.com, vach.kompella@alcatel.com Subject: RE: FW: WG Last Call on ARPmediation draft:draft-ietf-l2vpn-arp-mediation-01.txt X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org SGkgTWFyaywNCg0KSSB0aGluayB3ZSBhcmUgb24gdGhlIHNhbWUgcGFnZS4NCllvdXIgb2ZmZXJl ZCB0ZXh0IHJlYWRzIGJldHRlciBzbyBJIHdpbGwgdXNlIHRoYXQuDQoNCkFzIGZvciBkZW55aW5n IGFsbCBvdGhlciBQUFAgc3BlY2lmaWMgb3B0aW9ucyAob2J2aW91c2x5DQp3ZSBjYW4gbm90IG1h a2UgdGhlbSBpbnRlcndvcmsgZm9yIEVUSC9GUi9BVE0pLCBJIGRvbid0IGtub3cNCmlmIHNob3Vs ZCBsaXN0IGVhY2ggYW5kIGV2ZXJ5IFBQUCBvcHRpb24gb3Igc29tZSBibGFua2V0DQpzdGF0ZW1l bnQgc2F5aW5nIHRoYXQgUFBQIHNwZWNpZmljIG9wdGlvbnMgY2FuIG5vdCBiZQ0KaW50ZXJ3b3Jr ZWQgd2l0aCBvdGhlciBub24tUFBQIGF0dGFjaG1lbnQgY2lyY3VpdHMuDQoNCnJlZ2FyZHMsDQpo 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HTTP/1.1; Fri, 29 Apr 2005 21:57:20 +0100 Date: Fri, 29 Apr 2005 21:57:20 +0100 From: Mark Lewis To: hshah@ciena.com X-Mailer: Webmail Mirapoint Direct 3.2.2-GA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Spam-Score: 0.8 (/) X-Scan-Signature: 2086112c730e13d5955355df27e3074b Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, cpignata@cisco.com, vach.kompella@alcatel.com Subject: RE: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mark@mjlnet.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org SGkgSGltYW5zaHUsDQoNCg0KPg0KPkFzIGZvciBkZW55aW5nIGFsbCBvdGhlciBQUFAgc3Bl Y2lmaWMgb3B0aW9ucyAob2J2aW91c2x5DQo+d2UgY2FuIG5vdCBtYWtlIHRoZW0gaW50ZXJ3 b3JrIGZvciBFVEgvRlIvQVRNKSwgSSBkb24ndCBrbm93DQo+aWYgc2hvdWxkIGxpc3QgZWFj 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2005 17:16:13 -0400 Received: from mamxm01.ciena.com ([10.172.0.155]) by mdmxm01.ciena.com with Microsoft SMTPSVC(6.0.3790.211); Fri, 29 Apr 2005 17:02:19 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Date: Fri, 29 Apr 2005 17:00:49 -0400 Message-ID: Thread-Topic: FW: WG Last Call on ARPmediation Thread-Index: AcVM/hbOkqy67FVEQhOZ3HXDYQOQcwAAGW9w From: "Shah, Himanshu" To: X-OriginalArrivalTime: 29 Apr 2005 21:02:19.0054 (UTC) FILETIME=[BADF7CE0:01C54CFE] X-Spam-Score: 0.0 (/) X-Scan-Signature: 22bbb45ef41b733eb2d03ee71ece8243 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, cpignata@cisco.com, vach.kompella@alcatel.com Subject: RE: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: 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Apr 29 17:35:34 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DRd94-0005IA-0x; Fri, 29 Apr 2005 17:35:34 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DRd92-0005I0-Dw for l2vpn@megatron.ietf.org; Fri, 29 Apr 2005 17:35:32 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id RAA17186 for ; Fri, 29 Apr 2005 17:35:29 -0400 (EDT) Received: from hen.cisco.com ([64.102.19.198] helo=av-tac-rtp.cisco.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DRdMA-0005hy-Pt for l2vpn@ietf.org; Fri, 29 Apr 2005 17:49:07 -0400 X-TACSUNS: Virus Scanned Received: from rooster.cisco.com (localhost [127.0.0.1]) by av-tac-rtp.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3TLZLR07609; Fri, 29 Apr 2005 17:35:21 -0400 (EDT) Received: from [64.102.51.195] (dhcp-64-102-51-195.cisco.com [64.102.51.195]) by rooster.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3TLZLo05374; Fri, 29 Apr 2005 17:35:21 -0400 (EDT) Message-ID: <4272A898.9040903@cisco.com> Date: Fri, 29 Apr 2005 17:35:20 -0400 From: Carlos Pignataro Organization: cisco Systems, Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050317 Thunderbird/1.0.2 Mnenhy/0.7 X-Accept-Language: en-us, en MIME-Version: 1.0 To: mark@mjlnet.com References: <200504292057.DAZ71075@ms9.netsolmail.com> In-Reply-To: <200504292057.DAZ71075@ms9.netsolmail.com> X-Enigmail-Version: 0.91.0.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by av-tac-rtp.cisco.com id j3TLZLR07609 X-Spam-Score: 0.0 (/) X-Scan-Signature: a069a8e8835d39ce36e425c148267a7b Content-Transfer-Encoding: quoted-printable Cc: l2vpn@ietf.org, vach.kompella@alcatel.com, hshah@ciena.com Subject: Re: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Hi Mark/Himanshu, Please find a couple of comments inline. Circa 4/29/2005 4:57 PM, Mark Lewis said the following: > Hi Himanshu, >=20 >=20 >=20 >>As for denying all other PPP specific options (obviously >>we can not make them interwork for ETH/FR/ATM), I don't know >>if should list each and every PPP option or some blanket >>statement saying that PPP specific options can not be >>interworked with other non-PPP attachment circuits. >> >=20 >=20 >=20 > Obviously, both attachment circuits (including the PPP > attachment circuit) are terminated on their local PE device > when using IP (routed) mode L2VPN interworking, so there is no > question of interworking PPP, as you say. >=20 > I completely agree with you about a blanket statement. I guess > that in order for IP mode L2VPN interworking to function, the > only NCP option that the PE and CE *MUST* negotiate is the > IPCP IP-Address option (0x03) - it is not necessary to > negotiate any other NCPs or IPCP options. Isn't that right? >=20 >=20 > So, how about *something along these lines* : >=20 > 'In order for IP (routed) mode L2VPN interworking to function > correctly, the PE device MUST negotiate the IPCP IP-Address > option (0x03) with the local CE device. A MUST here contradicts the fact that the text does not "require" the CE to provide IP-Address option, and instead the PE relies on other methods if the CE does not send IPCP option 0x03. From the 2nd bullet: ". If the PE receives Configure-Request without the IP-Address option, PE responds with Configure-Ack." > The PE device MAY > reject configuration of other NCPs and IPCP options.' >=20 I wonder if this should be stronger, a SHOULD or MUST; I think the idea is to prevent the CE from negotiating any other protocol/NCP so that it does not send those protocols that would ultimately be discarded at the PE and not transported. Thanks, --Carlos. > Is that at all useful?? >=20 > Regards, >=20 > Mark >=20 >=20 >=20 > -----Original Message----- > From: Shah, Himanshu [mailto:hshah@ciena.com] > Sent: 29 April 2005 19:05 > To: mark@mjlnet.com > Cc: vach.kompella@alcatel.com; l2vpn@ietf.org; cpignata@cisco.com > Subject: RE: FW: WG Last Call on ARPmediation > draft:draft-ietf-l2vpn-arp-mediation-01.txt >=20 >=20 > Hi Mark, >=20 > I think we are on the same page. > Your offered text reads better so I will use that. >=20 > As for denying all other PPP specific options (obviously > we can not make them interwork for ETH/FR/ATM), I don't know > if should list each and every PPP option or some blanket > statement saying that PPP specific options can not be > interworked with other non-PPP attachment circuits. >=20 > regards, > himanshu >=20 >=20 >>-----Original Message----- >>From: Mark Lewis [mailto:mark@mjlnet.com] >>Sent: Wednesday, April 27, 2005 4:42 AM >>To: Shah, Himanshu >>Cc: vach.kompella@alcatel.com; l2vpn@ietf.org; >=20 > cpignata@cisco.com >=20 >>Subject: Re: FW: WG Last Call on ARPmediation >>draft:draft-ietf-l2vpn-arp-mediation-01.txt >> >> >>Hi Himanshu, >> >>Please see my comments below. >> >> >> >> >>4.4 CE Devices Using PPP >> >>The IPCP protocol is a two-sided negotiation procedures where >>CE and PE can exchange the local IP address configuration with >>each other. Since PE does not have IP address of his own, PE >>proxies for >>remote CE. >> >> >>************************************************************ >>Would it be possible to tweak the description of IPCP here? >>How about =E2=80=98The IP Control Protocol [IPCP] describes a >>procedure to establish and configure IP on a point-to-point >>connection, including the negotiation of IP addresses.=E2=80=99 >> >>Also, you mention that =E2=80=98=E2=80=A6=E2=80=A6since the PE does not= have an IP >>address of its own, it proxies for the remote CE=E2=80=99. Isn=E2=80=99= t it >>more correct to say that the PE performs proxy negotiation on >>behalf of the remote CE because when using IP/routed mode >>L2VPN interworking, the PPP negotiation **does not take place >>end-to-end between the CE devices** (the remote CE does not >>reside on a PPP link, and the pseudowire type used between PE >>devices is type 0x000B). >> >>Therefore, in order for the local CE device to find out the IP >>address of the remote CE, the local PE device must >>=E2=80=98impersonate=E2=80=99/proxy the remote CE? It doesn=E2=80=99t r= eally have that >>much to do with the fact that the PE doesn=E2=80=99t have its own IP >>address on the link does it??- The really **crucial fact** is >>that proxy PPP negotiation takes place between the local CE >>and PE because there is no end-to-end PPP negotiation between >>the local and remote CE devices, isn=E2=80=99t it??? >> >>So, how about wording along the following lines: >> >>=E2=80=98When using IP (Routed) mode L2VPN interworking, PPP >>negotiation is not performed end-to-end between CE devices. In >>this case, PPP negotiation takes place between the CE device >>and its local PE device (on the PPP attachment circuit). The >>PE device performs proxy PPP negotiation, and informs the >>local CE device of the IP address of the remote CE device >>during IPCP negotiation using the IP-Address option [0x03].=E2=80=99 >>************************************************************** >> >> >>When a PPP link becomes operational after the LCP >>negotiations, the local PE MAY perform following actions >>. The PE learns the IP address of the local CE from the >>Configure-Request received with the IP-Address option (0x03). >>The PE verifies that the IP address present in the IP-Address >>option TLV is non-zero. If the IP address is zero, PE responds >>with Configure Reject (as this is a request from CE to assign >>him an IP address). If the IP address is non-zero, PE responds >>with Configure-Ack. >> >> >> >>************************************************************ >>Would it be possible to change =E2=80=98IP-Address option TLV=E2=80=99 = here to >>=E2=80=98IP-Address option=E2=80=99 (delete the acronymn =E2=80=98TLV=E2= =80=99 as its not >>really used to describe PPP options)?? >>************************************************************ >> >> >>. If the PE receives Configure-Request without the >>IP-Address option, PE responds with Configure-Ack. In this >>case, PE would not learn the IP address of the local CE using >>IPCP and hence would rely on other means as described above >>(such as link-local broadcast from OSPF hello). >>=C3=82=C2=B7 If the PE does not know the IP address of the remote CE, i= t >>generates a Configure-Request without the IP-Address option. >>=C3=82=C2=B7 If the PE knows the IP address of the remote CE, it sends >>an IPCP Configure-Request with the IP-Address option >>containing the remote CE's IP address. >> >>The local PE device must deny the configuration of Network >>Control Protocol [NCP] options such as the IP-Compression >>Protocol [IPCP option 0x02]. >> >> >>*************************************************** >>I=E2=80=99m not sure about the phrase, =E2=80=98=E2=80=A6.options such = as the >>IP-Compression Protocol [IPCP option 0x02].=E2=80=99 What, >>specifically, are the criteria for denying the configuration >>of an NCP option here? I know that it includes IPCP >>IP-Compression [0x02] option, but how about denying >>negotiation of the Compression Control Protocol (CCP, RFC >>1962) in its entirety?? Do you perhaps also want to include a >>prohibition against negotiation of the Encryption Control >>Protocol in its entirety (ECP, RFC 1968)?? >> >> >> >> >>Hope that helps, >> >>Mark >> >> >=20 >=20 --=20 --Carlos. Escalation RTP - cisco Systems From l2vpn-bounces@ietf.org Fri Apr 29 18:01:22 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DRdY2-0003BY-LE; Fri, 29 Apr 2005 18:01:22 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DRdXz-000396-PD for l2vpn@megatron.ietf.org; Fri, 29 Apr 2005 18:01:20 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id SAA18835 for ; Fri, 29 Apr 2005 18:01:14 -0400 (EDT) Received: from lin1-118-39-27.ciena.com ([63.118.39.27] helo=mdmxm02.ciena.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DRdl6-0006x3-Dy for l2vpn@ietf.org; Fri, 29 Apr 2005 18:14:52 -0400 Received: from mamxm01.ciena.com ([10.172.0.155]) by mdmxm02.ciena.com with Microsoft SMTPSVC(6.0.3790.211); Fri, 29 Apr 2005 18:01:16 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Date: Fri, 29 Apr 2005 18:01:15 -0400 Message-ID: Thread-Topic: FW: WG Last Call on ARPmediation Thread-Index: AcVNA2iYkiUhODk1QEuX8SNm4V9DqgAAblvw From: "Shah, Himanshu" To: "Carlos Pignataro" , X-OriginalArrivalTime: 29 Apr 2005 22:01:16.0289 (UTC) FILETIME=[F73AB710:01C54D06] X-Spam-Score: 0.0 (/) X-Scan-Signature: 3971661e40967acfc35f708dd5f33760 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, vach.kompella@alcatel.com Subject: RE: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org VGhhdCBpcyB0cnVlLiBJIHRvb2sgdGhlIG1lYW5pbmcgIk1VU1QiIGZyb20NCnRoZSBwZXJzcGVj dGl2ZSBvZiB0aGUgUEUuIFRoYXQgaXMsIHdoZW4gUEUNCnNlbmRzIGNvbmZpZ3VyZS1yZXF1ZXN0 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29 Apr 2005 23:07:24 +0100 From: Mark Lewis To: cpignata@cisco.com X-Mailer: Webmail Mirapoint Direct 3.2.2-GA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Spam-Score: 0.8 (/) X-Scan-Signature: 93e7fb8fef2e780414389440f367c879 Content-Transfer-Encoding: base64 Cc: l2vpn@ietf.org, vach.kompella@alcatel.com, hshah@ciena.com Subject: Re: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mark@mjlnet.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org SGkgQ2FybG9zIGFuZCBIaW1hbnNodSwNCg0KPg0KPj4gVGhlIFBFIGRldmljZSBNQVkNCj4+ IHJlamVjdCBjb25maWd1cmF0aW9uIG9mIG90aGVyIE5DUHMgYW5kIElQQ1Agb3B0aW9ucy4n DQo+PiANCj4NCj5JIHdvbmRlciBpZiB0aGlzIHNob3VsZCBiZSBzdHJvbmdlciwgYSBTSE9V TEQgb3IgTVVTVDsgSQ0KdGhpbmsgdGhlIGlkZWENCj5pcyB0byBwcmV2ZW50IHRoZSBDRSBm 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DQo+Pj5Qcm90b2NvbCBpbiBpdHMgZW50aXJldHkgKEVDUCwgUkZDIDE5NjgpPz8NCj4+Pg0K Pj4+DQo+Pj4NCj4+Pg0KPj4+SG9wZSB0aGF0IGhlbHBzLA0KPj4+DQo+Pj5NYXJrDQo+Pj4N Cj4+Pg0KPj4gDQo+PiANCj4NCj4tLSANCj4tLUNhcmxvcy4NCj5Fc2NhbGF0aW9uIFJUUCAt IGNpc2NvIFN5c3RlbXMNCg== From l2vpn-bounces@ietf.org Fri Apr 29 19:12:33 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DReev-0003el-Ge; Fri, 29 Apr 2005 19:12:33 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DReer-0003eY-51 for l2vpn@megatron.ietf.org; Fri, 29 Apr 2005 19:12:31 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id TAA00349 for ; Fri, 29 Apr 2005 19:12:25 -0400 (EDT) Received: from omr3.netsolmail.com ([216.168.230.164]) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DRes0-0002yv-PB for l2vpn@ietf.org; Fri, 29 Apr 2005 19:26:05 -0400 Received: from ms9.netsolmail.com (IDENT:mirapoint@[216.168.230.183]) by omr3.netsolmail.com (8.12.10/8.12.10) with ESMTP id j3TN91vR018946; Fri, 29 Apr 2005 19:09:05 -0400 (EDT) Received: from mark2wks (81-178-20-174.dsl.pipex.com [81.178.20.174]) by ms9.netsolmail.com (Mirapoint Messaging Server MOS 3.2.2-GA) with SMTP id DBA06248; Fri, 29 Apr 2005 19:08:59 -0400 (EDT) From: "Mark Lewis" To: Date: Sat, 30 Apr 2005 00:11:29 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal X-Spam-Score: 0.0 (/) X-Scan-Signature: bf422c85703d3d847fb014987125ac48 Content-Transfer-Encoding: quoted-printable Cc: "L2vpn@Ietf. Org" , vach.kompella@alcatel.com, hshah@ciena.com Subject: FW: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: mark@mjlnet.com List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Hi Carlos and Himanshu again, Need to modify slightly, I think (addition of the word 'OTHER' in last = bullet): *IPCP IP-Address option MAY be negotiated between the PE and the local CE device. *Configuration of other IPCP options MAY be rejected. *Other NCPs, with the exception of the Compression Control Protocol (CCP) and Encryption Control Protocol (ECP), MUST be rejected. Configuration of CCP and ECP MAY be rejected by the PE device. Does that make sense? Regards, Mark >>=20 >>=20 >> -----Original Message----- >> From: Shah, Himanshu [mailto:hshah@ciena.com] >> Sent: 29 April 2005 19:05 >> To: mark@mjlnet.com >> Cc: vach.kompella@alcatel.com; l2vpn@ietf.org; cpignata@cisco.com >> Subject: RE: FW: WG Last Call on ARPmediation >> draft:draft-ietf-l2vpn-arp-mediation-01.txt >>=20 >>=20 >> Hi Mark, >>=20 >> I think we are on the same page. >> Your offered text reads better so I will use that. >>=20 >> As for denying all other PPP specific options (obviously >> we can not make them interwork for ETH/FR/ATM), I don't know >> if should list each and every PPP option or some blanket >> statement saying that PPP specific options can not be >> interworked with other non-PPP attachment circuits. >>=20 >> regards, >> himanshu >>=20 >>=20 >>>-----Original Message----- >>>From: Mark Lewis [mailto:mark@mjlnet.com] >>>Sent: Wednesday, April 27, 2005 4:42 AM >>>To: Shah, Himanshu >>>Cc: vach.kompella@alcatel.com; l2vpn@ietf.org; >>=20 >> cpignata@cisco.com >>=20 >>>Subject: Re: FW: WG Last Call on ARPmediation >>>draft:draft-ietf-l2vpn-arp-mediation-01.txt >>> >>> >>>Hi Himanshu, >>> >>>Please see my comments below. >>> >>> >>> >>> >>>4.4 CE Devices Using PPP >>> >>>The IPCP protocol is a two-sided negotiation procedures where >>>CE and PE can exchange the local IP address configuration with >>>each other. Since PE does not have IP address of his own, PE >>>proxies for >>>remote CE. >>> >>> >>>************************************************************ >>>Would it be possible to tweak the description of IPCP here? >>>How about =E2=80=98The IP Control Protocol [IPCP] describes a >>>procedure to establish and configure IP on a point-to-point >>>connection, including the negotiation of IP addresses.=E2=80=99 >>> >>>Also, you mention that =E2=80=98=E2=80=A6=E2=80=A6since the PE does = not have an IP >>>address of its own, it proxies for the remote CE=E2=80=99. = Isn=E2=80=99t it >>>more correct to say that the PE performs proxy negotiation on >>>behalf of the remote CE because when using IP/routed mode >>>L2VPN interworking, the PPP negotiation **does not take place >>>end-to-end between the CE devices** (the remote CE does not >>>reside on a PPP link, and the pseudowire type used between PE >>>devices is type 0x000B). >>> >>>Therefore, in order for the local CE device to find out the IP >>>address of the remote CE, the local PE device must >>>=E2=80=98impersonate=E2=80=99/proxy the remote CE? It doesn=E2=80=99t = really have that >>>much to do with the fact that the PE doesn=E2=80=99t have its own IP >>>address on the link does it??- The really **crucial fact** is >>>that proxy PPP negotiation takes place between the local CE >>>and PE because there is no end-to-end PPP negotiation between >>>the local and remote CE devices, isn=E2=80=99t it??? >>> >>>So, how about wording along the following lines: >>> >>>=E2=80=98When using IP (Routed) mode L2VPN interworking, PPP >>>negotiation is not performed end-to-end between CE devices. In >>>this case, PPP negotiation takes place between the CE device >>>and its local PE device (on the PPP attachment circuit). The >>>PE device performs proxy PPP negotiation, and informs the >>>local CE device of the IP address of the remote CE device >>>during IPCP negotiation using the IP-Address option [0x03].=E2=80=99 >>>************************************************************** >>> >>> >>>When a PPP link becomes operational after the LCP >>>negotiations, the local PE MAY perform following actions >>>. The PE learns the IP address of the local CE from the >>>Configure-Request received with the IP-Address option (0x03). >>>The PE verifies that the IP address present in the IP-Address >>>option TLV is non-zero. If the IP address is zero, PE responds >>>with Configure Reject (as this is a request from CE to assign >>>him an IP address). If the IP address is non-zero, PE responds >>>with Configure-Ack. >>> >>> >>> >>>************************************************************ >>>Would it be possible to change =E2=80=98IP-Address option = TLV=E2=80=99 here to >>>=E2=80=98IP-Address option=E2=80=99 (delete the acronymn = =E2=80=98TLV=E2=80=99 as its not >>>really used to describe PPP options)?? >>>************************************************************ >>> >>> >>>. If the PE receives Configure-Request without the >>>IP-Address option, PE responds with Configure-Ack. In this >>>case, PE would not learn the IP address of the local CE using >>>IPCP and hence would rely on other means as described above >>>(such as link-local broadcast from OSPF hello). >>>=C3=82=C2=B7 If the PE does not know the IP address of the remote CE, = it >>>generates a Configure-Request without the IP-Address option. >>>=C3=82=C2=B7 If the PE knows the IP address of the remote CE, it = sends >>>an IPCP Configure-Request with the IP-Address option >>>containing the remote CE's IP address. >>> >>>The local PE device must deny the configuration of Network >>>Control Protocol [NCP] options such as the IP-Compression >>>Protocol [IPCP option 0x02]. >>> >>> >>>*************************************************** >>>I=E2=80=99m not sure about the phrase, =E2=80=98=E2=80=A6.options = such as the >>>IP-Compression Protocol [IPCP option 0x02].=E2=80=99 What, >>>specifically, are the criteria for denying the configuration >>>of an NCP option here? I know that it includes IPCP >>>IP-Compression [0x02] option, but how about denying >>>negotiation of the Compression Control Protocol (CCP, RFC >>>1962) in its entirety?? Do you perhaps also want to include a >>>prohibition against negotiation of the Encryption Control >>>Protocol in its entirety (ECP, RFC 1968)?? >>> >>> >>> >>> >>>Hope that helps, >>> >>>Mark >>> >>> >>=20 >>=20 > >--=20 >--Carlos. >Escalation RTP - cisco Systems From l2vpn-bounces@ietf.org Fri Apr 29 21:49:35 2005 Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DRh6t-0001bD-Kd; Fri, 29 Apr 2005 21:49:35 -0400 Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1DRh6r-0001b8-W9 for l2vpn@megatron.ietf.org; Fri, 29 Apr 2005 21:49:34 -0400 Received: from ietf-mx.ietf.org (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id VAA08739 for ; Fri, 29 Apr 2005 21:49:32 -0400 (EDT) Received: from hen.cisco.com ([64.102.19.198] helo=av-tac-rtp.cisco.com) by ietf-mx.ietf.org with esmtp (Exim 4.33) id 1DRhK3-0001Yw-2r for l2vpn@ietf.org; Fri, 29 Apr 2005 22:03:11 -0400 X-TACSUNS: Virus Scanned Received: from rooster.cisco.com (localhost [127.0.0.1]) by av-tac-rtp.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3U1nJx21535; Fri, 29 Apr 2005 21:49:19 -0400 (EDT) Received: from [192.168.123.127] (rtp-vpn1-155.cisco.com [10.82.224.155]) by rooster.cisco.com (8.11.7p1+Sun/8.11.7) with ESMTP id j3U1nHo17462; Fri, 29 Apr 2005 21:49:17 -0400 (EDT) Message-ID: <4272E41D.2020505@cisco.com> Date: Fri, 29 Apr 2005 21:49:17 -0400 From: Carlos Pignataro Organization: cisco Systems, Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050317 Thunderbird/1.0.2 Mnenhy/0.7 X-Accept-Language: en-us, en MIME-Version: 1.0 To: mark@mjlnet.com References: In-Reply-To: X-Enigmail-Version: 0.91.0.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by av-tac-rtp.cisco.com id j3U1nJx21535 X-Spam-Score: 0.0 (/) X-Scan-Signature: df9edf1223802dd4cf213867a3af6121 Content-Transfer-Encoding: quoted-printable Cc: "L2vpn@Ietf. Org" , vach.kompella@alcatel.com, hshah@ciena.com Subject: Re: FW: FW: WG Last Call on ARPmediation X-BeenThere: l2vpn@ietf.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: l2vpn.ietf.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: l2vpn-bounces@ietf.org Errors-To: l2vpn-bounces@ietf.org Circa 4/29/2005 7:11 PM, Mark Lewis said the following: >=20 >=20 > Hi Carlos and Himanshu again, >=20 >=20 > Need to modify slightly, I think (addition of the word 'OTHER' in last = bullet): >=20 >=20 > *IPCP IP-Address option MAY be negotiated between the PE and > the local CE device. >=20 > *Configuration of other IPCP options MAY be rejected. >=20 > *Other NCPs, with the exception of the Compression Control Protocol > (CCP) and Encryption Control Protocol (ECP), MUST be rejected. > Configuration of CCP and ECP MAY be rejected by the PE device. >=20 >=20 >=20 > Does that make sense? >=20 Yes, it's comprehensive yet simple enough. Thanks, --Carlos. >=20 > Regards, >=20 > Mark >=20 >=20 >=20 >=20 >>> >>>-----Original Message----- >>>From: Shah, Himanshu [mailto:hshah@ciena.com] >>>Sent: 29 April 2005 19:05 >>>To: mark@mjlnet.com >>>Cc: vach.kompella@alcatel.com; l2vpn@ietf.org; >=20 > cpignata@cisco.com >=20 >>>Subject: RE: FW: WG Last Call on ARPmediation >>>draft:draft-ietf-l2vpn-arp-mediation-01.txt >>> >>> >>>Hi Mark, >>> >>>I think we are on the same page. >>>Your offered text reads better so I will use that. >>> >>>As for denying all other PPP specific options (obviously >>>we can not make them interwork for ETH/FR/ATM), I don't know >>>if should list each and every PPP option or some blanket >>>statement saying that PPP specific options can not be >>>interworked with other non-PPP attachment circuits. >>> >>>regards, >>>himanshu >>> >>> >>> >>>>-----Original Message----- >>>>From: Mark Lewis [mailto:mark@mjlnet.com] >>>>Sent: Wednesday, April 27, 2005 4:42 AM >>>>To: Shah, Himanshu >>>>Cc: vach.kompella@alcatel.com; l2vpn@ietf.org; >>> >>>cpignata@cisco.com >>> >>> >>>>Subject: Re: FW: WG Last Call on ARPmediation >>>>draft:draft-ietf-l2vpn-arp-mediation-01.txt >>>> >>>> >>>>Hi Himanshu, >>>> >>>>Please see my comments below. >>>> >>>> >>>> >>>> >>>>4.4 CE Devices Using PPP >>>> >>>>The IPCP protocol is a two-sided negotiation procedures where >>>>CE and PE can exchange the local IP address configuration with >>>>each other. Since PE does not have IP address of his own, PE >>>>proxies for >>>>remote CE. >>>> >>>> >>>>************************************************************ >>>>Would it be possible to tweak the description of IPCP here? >>>>How about =E2=80=98The IP Control Protocol [IPCP] describes a >>>>procedure to establish and configure IP on a point-to-point >>>>connection, including the negotiation of IP addresses.=E2=80=99 >>>> >>>>Also, you mention that =E2=80=98=E2=80=A6=E2=80=A6since the PE does n= ot have an IP >>>>address of its own, it proxies for the remote CE=E2=80=99. Isn=E2=80=99= t it >>>>more correct to say that the PE performs proxy negotiation on >>>>behalf of the remote CE because when using IP/routed mode >>>>L2VPN interworking, the PPP negotiation **does not take place >>>>end-to-end between the CE devices** (the remote CE does not >>>>reside on a PPP link, and the pseudowire type used between PE >>>>devices is type 0x000B). >>>> >>>>Therefore, in order for the local CE device to find out the IP >>>>address of the remote CE, the local PE device must >>>>=E2=80=98impersonate=E2=80=99/proxy the remote CE? It doesn=E2=80=99t= really have that >>>>much to do with the fact that the PE doesn=E2=80=99t have its own IP >>>>address on the link does it??- The really **crucial fact** is >>>>that proxy PPP negotiation takes place between the local CE >>>>and PE because there is no end-to-end PPP negotiation between >>>>the local and remote CE devices, isn=E2=80=99t it??? >>>> >>>>So, how about wording along the following lines: >>>> >>>>=E2=80=98When using IP (Routed) mode L2VPN interworking, PPP >>>>negotiation is not performed end-to-end between CE devices. In >>>>this case, PPP negotiation takes place between the CE device >>>>and its local PE device (on the PPP attachment circuit). The >>>>PE device performs proxy PPP negotiation, and informs the >>>>local CE device of the IP address of the remote CE device >>>>during IPCP negotiation using the IP-Address option [0x03].=E2=80=99 >>>>************************************************************** >>>> >>>> >>>>When a PPP link becomes operational after the LCP >>>>negotiations, the local PE MAY perform following actions >>>>. The PE learns the IP address of the local CE from the >>>>Configure-Request received with the IP-Address option (0x03). >>>>The PE verifies that the IP address present in the IP-Address >>>>option TLV is non-zero. If the IP address is zero, PE responds >>>>with Configure Reject (as this is a request from CE to assign >>>>him an IP address). If the IP address is non-zero, PE responds >>>>with Configure-Ack. >>>> >>>> >>>> >>>>************************************************************ >>>>Would it be possible to change =E2=80=98IP-Address option TLV=E2=80=99= here to >>>>=E2=80=98IP-Address option=E2=80=99 (delete the acronymn =E2=80=98TLV= =E2=80=99 as its not >>>>really used to describe PPP options)?? >>>>************************************************************ >>>> >>>> >>>>. If the PE receives Configure-Request without the >>>>IP-Address option, PE responds with Configure-Ack. In this >>>>case, PE would not learn the IP address of the local CE using >>>>IPCP and hence would rely on other means as described above >>>>(such as link-local broadcast from OSPF hello). >>>>=C3=82=C2=B7 If the PE does not know the IP address of the remote CE,= it >>>>generates a Configure-Request without the IP-Address option. >>>>=C3=82=C2=B7 If the PE knows the IP address of the remote CE, it send= s >>>>an IPCP Configure-Request with the IP-Address option >>>>containing the remote CE's IP address. >>>> >>>>The local PE device must deny the configuration of Network >>>>Control Protocol [NCP] options such as the IP-Compression >>>>Protocol [IPCP option 0x02]. >>>> >>>> >>>>*************************************************** >>>>I=E2=80=99m not sure about the phrase, =E2=80=98=E2=80=A6.options suc= h as the >>>>IP-Compression Protocol [IPCP option 0x02].=E2=80=99 What, >>>>specifically, are the criteria for denying the configuration >>>>of an NCP option here? I know that it includes IPCP >>>>IP-Compression [0x02] option, but how about denying >>>>negotiation of the Compression Control Protocol (CCP, RFC >>>>1962) in its entirety?? Do you perhaps also want to include a >>>>prohibition against negotiation of the Encryption Control >>>>Protocol in its entirety (ECP, RFC 1968)?? >>>> >>>> >>>> >>>> >>>>Hope that helps, >>>> >>>>Mark >>>> >>>> >>> >>> >>--=20 >>--Carlos. >>Escalation RTP - cisco Systems >=20 >=20 --=20 --Carlos. Escalation RTP - cisco Systems