From nobody Fri Mar 3 15:56:26 2017 Return-Path: X-Original-To: rtg-bfd@ietf.org Delivered-To: rtg-bfd@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id F3AB0129672; Fri, 3 Mar 2017 15:55:20 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: "\"IETF Secretariat\"" To: , Subject: bfd - Requested session has been scheduled for IETF 98 X-Test-IDTracker: no X-IETF-IDTracker: 6.46.1 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <148858532099.15846.11696820723124164502.idtracker@ietfa.amsl.com> Date: Fri, 03 Mar 2017 15:55:20 -0800 Archived-At: Cc: rtg-bfd@ietf.org X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.17 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Mar 2017 23:55:21 -0000 Dear Reshad Rahman, The session(s) that you have requested have been scheduled. Below is the scheduled session information followed by the original request. bfd Session 1 (1:00:00) Monday, Afternoon Session III 1710-1810 Room Name: Zurich B size: 100 --------------------------------------------- Request Information: --------------------------------------------------------- Working Group Name: Bidirectional Forwarding Detection Area Name: Routing Area Session Requester: Reshad Rahman Number of Sessions: 1 Length of Session(s): 1 Hour Number of Attendees: 40 Conflicts to Avoid: First Priority: idr i2rs mpls sfc spring bier lime Second Priority: bess isis nvo3 ospf pals rtgwg teas People who must be present: Jeffrey Haas Reshad Rahman Alvaro Retana Resources Requested: Meetecho support in room Special Requests: Monday to Thursday. --------------------------------------------------------- From nobody Wed Mar 8 18:19:46 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 4B99E12962D; Wed, 8 Mar 2017 18:19:45 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.522 X-Spam-Level: X-Spam-Status: No, score=-14.522 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id iw1bExmlfPpP; Wed, 8 Mar 2017 18:19:44 -0800 (PST) Received: from alln-iport-7.cisco.com (alln-iport-7.cisco.com [173.37.142.94]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id E2B261294B6; Wed, 8 Mar 2017 18:19:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1408; q=dns/txt; s=iport; t=1489025984; x=1490235584; h=from:to:cc:subject:date:message-id:content-id: content-transfer-encoding:mime-version; bh=QAy8lSjxk8YdSgcbhWy6N/IFHudEoTmopv0FLBPgzt0=; b=UlKN34Xt3Ah85ih9V2WvgsUaI8NDUTB/5PlJFCE0O/PwcvEtfujVDjwb meZUnHgBTI21HpHLf7KydQMAP6PID/Mj8XS6Tv0hJrOCSHPGhkzN5OaZl 5jmn4PLImOg7fMIwRu9Dql419nNgwxYI/yj9ZS45mJljA1kLdfD3Q3DFF o=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0CnAQB8usBY/4ENJK1eGwEBAQMBAQEJA?= =?us-ascii?q?QEBg1GBaweNZacFgg2GIoJHPxgBAgEBAQEBAQFrHQuFVj8SAT5CJwQOBYl/snK?= =?us-ascii?q?KcQEBAQEBAQEBAgEBAQEBASKGTo8oBYkahj6MXgGSN4F7hSOKApM9AR84gQNWF?= =?us-ascii?q?YcSAXWJBoENAQEB?= X-IronPort-AV: E=Sophos;i="5.36,266,1486425600"; d="scan'208";a="395480793" Received: from alln-core-9.cisco.com ([173.36.13.129]) by alln-iport-7.cisco.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 09 Mar 2017 02:19:43 +0000 Received: from XCH-ALN-002.cisco.com (xch-aln-002.cisco.com [173.36.7.12]) by alln-core-9.cisco.com (8.14.5/8.14.5) with ESMTP id v292JhiZ006759 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Thu, 9 Mar 2017 02:19:43 GMT Received: from xch-rcd-005.cisco.com (173.37.102.15) by XCH-ALN-002.cisco.com (173.36.7.12) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Wed, 8 Mar 2017 20:19:42 -0600 Received: from xch-rcd-005.cisco.com ([173.37.102.15]) by XCH-RCD-005.cisco.com ([173.37.102.15]) with mapi id 15.00.1210.000; Wed, 8 Mar 2017 20:19:42 -0600 From: "Reshad Rahman (rrahman)" To: "rtg-bfd@ietf.org" Subject: IETF98 BFD WG agenda items Thread-Topic: IETF98 BFD WG agenda items Thread-Index: AQHSmHucER4Tv+uEWUWxHyL3/1YY0Q== Date: Thu, 9 Mar 2017 02:19:41 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.6.8.160830 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.86.246.212] Content-Type: text/plain; charset="us-ascii" Content-ID: <13537643A4F34342BFBFB244C1D204DA@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: Cc: "bfd-chairs@ietf.org" X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Mar 2017 02:19:45 -0000 Hi everyone, The BFD WG has a time slot during IETF98 in Chicago, we are meeting Monday March 27th 2017 from 17:10 to 18:10. Please send your requests for agenda items (presenter, draft, time requested) to bfd-chairs@ietf.org, no later than Friday March 17th 2017. Regards, Reshad & Jeff. On 2017-03-03, 6:55 PM, ""IETF Secretariat"" wrote: >Dear Reshad Rahman, > >The session(s) that you have requested have been scheduled. >Below is the scheduled session information followed by >the original request. > >bfd Session 1 (1:00:00) > Monday, Afternoon Session III 1710-1810 > Room Name: Zurich B size: 100 > --------------------------------------------- > =20 > > >Request Information: > > >--------------------------------------------------------- >Working Group Name: Bidirectional Forwarding Detection >Area Name: Routing Area >Session Requester: Reshad Rahman > >Number of Sessions: 1 >Length of Session(s): 1 Hour >Number of Attendees: 40 >Conflicts to Avoid: > First Priority: idr i2rs mpls sfc spring bier lime > Second Priority: bess isis nvo3 ospf pals rtgwg teas > > > >People who must be present: > Jeffrey Haas > Reshad Rahman > Alvaro Retana > >Resources Requested: > Meetecho support in room > >Special Requests: > Monday to Thursday. >--------------------------------------------------------- > From nobody Fri Mar 10 13:26:21 2017 Return-Path: X-Original-To: rtg-bfd@ietf.org Delivered-To: rtg-bfd@ietfa.amsl.com Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 9BCED129480; Fri, 10 Mar 2017 13:26:19 -0800 (PST) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Subject: I-D Action: draft-ietf-bfd-yang-05.txt X-Test-IDTracker: no X-IETF-IDTracker: 6.47.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <148918117961.2935.12236490144244779567@ietfa.amsl.com> Date: Fri, 10 Mar 2017 13:26:19 -0800 Archived-At: Cc: rtg-bfd@ietf.org X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.17 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Mar 2017 21:26:19 -0000 A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Bidirectional Forwarding Detection of the IETF. Title : Yang Data Model for Bidirectional Forwarding Detection (BFD) Authors : Reshad Rahman Lianshu Zheng Santosh Pallagatti Mahesh Jethanandani Greg Mirsky Filename : draft-ietf-bfd-yang-05.txt Pages : 53 Date : 2017-03-10 Abstract: This document defines a YANG data model that can be used to configure and manage Bidirectional Forwarding Detection (BFD). The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-yang/ There's also a htmlized version available at: https://tools.ietf.org/html/draft-ietf-bfd-yang-05 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-yang-05 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ From nobody Fri Mar 10 13:30:13 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1E55F12948C for ; Fri, 10 Mar 2017 13:30:13 -0800 (PST) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.523 X-Spam-Level: X-Spam-Status: No, score=-14.523 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PAHsywkRw30J for ; Fri, 10 Mar 2017 13:30:11 -0800 (PST) Received: from rcdn-iport-8.cisco.com (rcdn-iport-8.cisco.com [173.37.86.79]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B9B4112944E for ; Fri, 10 Mar 2017 13:30:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=1760; q=dns/txt; s=iport; t=1489181411; x=1490391011; h=from:to:subject:date:message-id:references:in-reply-to: content-id:content-transfer-encoding:mime-version; bh=ImBYxW0UfUW18ixNKUeXNcXylTNg2J5dcNkRr5j3Uw0=; b=Myx7ZGQyb352gCIdcxOgY1Pfdy5+cUDVpLC3JwpjOM2Yz9WucIPEJUcE GRnqljLGcmn1KbRAoEahwGbmVQRbybl50+KoeC8XpUxtpvjQAN0aCb7GS QAYFYxyCU3veAXYMrdimsKuyOk+B7HY/TUtuIBo6LsldUTP1znJMpkLRt Y=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0CqAQB5GsNY/4cNJK1dGwEBAQMBAQEJA?= =?us-ascii?q?QEBg1FhgQoHjWenCIIOKoV4AoJBPxgBAgEBAQEBAQFrHQuFFgY6TwIBCDYQMiU?= =?us-ascii?q?CBBOKAA60G4pkAQEBAQEBAQECAQEBAQEBAQEghk6Eb4MXhyIFnDwBhnWLQoF7V?= =?us-ascii?q?IRRigSTPwEfOIEDVxUYhnx1iQ2BDQEBAQ?= X-IronPort-AV: E=Sophos;i="5.36,142,1486425600"; d="scan'208";a="217083884" Received: from alln-core-2.cisco.com ([173.36.13.135]) by rcdn-iport-8.cisco.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 10 Mar 2017 21:29:46 +0000 Received: from XCH-RCD-004.cisco.com (xch-rcd-004.cisco.com [173.37.102.14]) by alln-core-2.cisco.com (8.14.5/8.14.5) with ESMTP id v2ALTkfp002810 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL) for ; Fri, 10 Mar 2017 21:29:46 GMT Received: from xch-rcd-005.cisco.com (173.37.102.15) by XCH-RCD-004.cisco.com (173.37.102.14) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Fri, 10 Mar 2017 15:29:45 -0600 Received: from xch-rcd-005.cisco.com ([173.37.102.15]) by XCH-RCD-005.cisco.com ([173.37.102.15]) with mapi id 15.00.1210.000; Fri, 10 Mar 2017 15:29:45 -0600 From: "Reshad Rahman (rrahman)" To: "rtg-bfd@ietf.org" Subject: Re: I-D Action: draft-ietf-bfd-yang-05.txt Thread-Topic: I-D Action: draft-ietf-bfd-yang-05.txt Thread-Index: AQHSmeT6ATa4gSjLkUWMG3euTq2wNqGOp9SA Date: Fri, 10 Mar 2017 21:29:45 +0000 Message-ID: References: <148918117961.2935.12236490144244779567@ietfa.amsl.com> In-Reply-To: <148918117961.2935.12236490144244779567@ietfa.amsl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.6.8.160830 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.86.242.65] Content-Type: text/plain; charset="us-ascii" Content-ID: <1E8428C7C131B5468F860F76FC7D4516@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Mar 2017 21:30:13 -0000 Main changes from rev 04 are: - Removed augment of network-instance, added reference to schema-mount - bfd is not top-level anymore, augments control-plane-protocol from RFC8022 - Addeds section on Interaction with other YANG modules Regards, BFD YANG authors. On 2017-03-10, 4:26 PM, "Rtg-bfd on behalf of internet-drafts@ietf.org" wrote: > >A New Internet-Draft is available from the on-line Internet-Drafts >directories. >This draft is a work item of the Bidirectional Forwarding Detection of >the IETF. > > Title : Yang Data Model for Bidirectional Forwarding >Detection (BFD) > Authors : Reshad Rahman > Lianshu Zheng > Santosh Pallagatti > Mahesh Jethanandani > Greg Mirsky > Filename : draft-ietf-bfd-yang-05.txt > Pages : 53 > Date : 2017-03-10 > >Abstract: > This document defines a YANG data model that can be used to configure > and manage Bidirectional Forwarding Detection (BFD). > > > >The IETF datatracker status page for this draft is: >https://datatracker.ietf.org/doc/draft-ietf-bfd-yang/ > >There's also a htmlized version available at: >https://tools.ietf.org/html/draft-ietf-bfd-yang-05 > >A diff from the previous version is available at: >https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-yang-05 > > >Please note that it may take a couple of minutes from the time of >submission >until the htmlized version and diff are available at tools.ietf.org. > >Internet-Drafts are also available by anonymous FTP at: >ftp://ftp.ietf.org/internet-drafts/ > From nobody Wed Mar 22 11:34:10 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 3B43312999B for ; Wed, 22 Mar 2017 11:34:08 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.903 X-Spam-Level: X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id trRfcaTCguor for ; Wed, 22 Mar 2017 11:34:06 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 20D1A129B7E for ; Wed, 22 Mar 2017 11:34:06 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 81D621E33E; Wed, 22 Mar 2017 14:40:29 -0400 (EDT) Date: Wed, 22 Mar 2017 14:40:29 -0400 From: Jeffrey Haas To: Mahesh Jethanandani Cc: Sonal Agarwal , rtg-bfd@ietf.org Subject: Re: Request to review "Security enhancments for BFD packet's sequence number" Message-ID: <20170322184029.GQ7253@pfrc.org> References: <82C98FEC-E199-4F5D-BB41-932082C03F74@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <82C98FEC-E199-4F5D-BB41-932082C03F74@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Mar 2017 18:34:08 -0000 On Thu, Feb 23, 2017 at 10:12:51PM -0800, Mahesh Jethanandani wrote: > What Sonal means to ask if for folks to review the draft. > > https://tools.ietf.org/html/draft-sonal-bfd-secure-sequence-numbers-00.txt > > The abstract of which reads: > > This document describes a security enhancements for the BFD packet's sequence number. Thanks for posting the draft. I'm looking forward to seeing the discussion on this proposal at the upcoming BFD session. Having taken a quick look at the draft, I'm hoping to see the presentation cover some further details about the initial sequence number logic in particular. -- Jeff From nobody Wed Mar 22 12:28:48 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id C23101294F4 for ; Wed, 22 Mar 2017 12:28:47 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.903 X-Spam-Level: X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cqJ9FEsI0s-C for ; Wed, 22 Mar 2017 12:28:45 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 98266127F0E for ; Wed, 22 Mar 2017 12:28:45 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 1F4871E33E; Wed, 22 Mar 2017 15:35:09 -0400 (EDT) Date: Wed, 22 Mar 2017 15:35:08 -0400 From: Jeffrey Haas To: rtg-bfd@ietf.org Subject: Re: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt Message-ID: <20170322193508.GT7253@pfrc.org> References: <148349024330.27920.12965506868600849117.idtracker@ietfa.amsl.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Mar 2017 19:28:48 -0000 This update is scheduled to be discussed at the upcoming session at IETF-98 in Chicago. The likely discussion is whether the new draft from Sonal should be specifically tied to the advancement of the optimization draft. Our prior discussion with Alan had suggested some concern about the sequence number issues when we're using NULL authentication. I suspect some good discussion will happen on this topic at the upcoming session and encourage the members of the Working Group to read both drafts in preparation. -- Jeff > On Jan 3, 2017, at 4:37 PM, internet-drafts@ietf.org wrote: > > > A new version of I-D, draft-ietf-bfd-optimizing-authentication-02.txt > has been successfully submitted by Mahesh Jethanandani and posted to the > IETF repository. > > Name: draft-ietf-bfd-optimizing-authentication > Revision: 02 > Title: Optimizing BFD Authentication > Document date: 2017-01-05 > Group: bfd > Pages: 8 > URL: https://www.ietf.org/internet-drafts/draft-ietf-bfd-optimizing-authentication-02.txt > Status: https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/ > Htmlized: https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-02 > Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-optimizing-authentication-02 > > Abstract: > This document describes an optimization to BFD Authentication as > described in Section 6.7 of BFD [RFC5880]. > > > > > > Please note that it may take a couple of minutes from the time of submission > until the htmlized version and diff are available at tools.ietf.org. > > The IETF Secretariat From nobody Wed Mar 22 18:57:50 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CEC061293FD for ; Wed, 22 Mar 2017 18:57:48 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OXz6045VSv1x for ; Wed, 22 Mar 2017 18:57:44 -0700 (PDT) Received: from mail-pg0-x22e.google.com (mail-pg0-x22e.google.com [IPv6:2607:f8b0:400e:c05::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 081661241FC for ; Wed, 22 Mar 2017 18:57:44 -0700 (PDT) Received: by mail-pg0-x22e.google.com with SMTP id t143so49404678pgb.2 for ; Wed, 22 Mar 2017 18:57:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=9PnVtx4mDpqH8Jm6bOuKx4M/0PBroI5fm5qjm/UklcQ=; b=RP57mw3cJrHs0/5RA7Oj7O2duWWPxWddMhEdcueU1Kl+EC0q65YmaVCz4Vdz8CzIoy OprV+9S/saDyorjjnoGZwmdwrx6hNyeqaMah1By/xgbjcrPTDUWfBPK+Q95sw6rDTGCo hFiGftCn6QhAbBghAQ46YYB5Nnf37+ZQ88PWVsX5XC/sS3jpSBasSUdYIFfZS1jiugyy AJk2zvp5Hw20XgP/XxsQChWaJWubDoZY95aXPf7lEK9oJwi9B2ZhPruus80rx2KTxwf0 P0nD9kEUkAhvdupHctSxK4s9z4StKJssRFA6k9g+K8zJQn9mIXt8SRXzp4DWfTY1CAIr Uzog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=9PnVtx4mDpqH8Jm6bOuKx4M/0PBroI5fm5qjm/UklcQ=; b=hTZoKNNDVJJ9W24bqEEK9VGSEXz7DG2BgPpyc4l5Y0iefYVrXXWe/wbRje1FDJJV4a 4/esrbC2JlZR/Ia/3ULyeJLcnz7ns5LXECt7luvGVLopYS+AEEveBpSradd57FXeg0be 4He/j9PT2aOombRw0Fw9HVGZUa8Tze6bsPlPr9b4x4lV4Eh8J8Dr8/btEKL5aEtm3ORP GMgvMwr40QKrRTsBcPUd+FIztcR71uTHDzIRh5v6OFRpGpdtAM8gwURT3cJyGN6s6Hq9 KjVzRrW+XqyHSwdiNVMsn6xfHx/LZQo7CXnQ4Gh6DR9bBE6OlsZTiPK7kMad6ggLyThk T7qA== X-Gm-Message-State: AFeK/H0lpEX+v4Bkto8PoITz6WLFz5ca95R4eDP3HjEsVv+GVyzb7jPFAldDGq42Ji2TaQ== X-Received: by 10.98.200.136 with SMTP id i8mr80822pfk.120.1490234263558; Wed, 22 Mar 2017 18:57:43 -0700 (PDT) Received: from ?IPv6:2602:306:cf77:df90:8934:e85:444c:1d55? ([2602:306:cf77:df90:8934:e85:444c:1d55]) by smtp.gmail.com with ESMTPSA id r66sm6226906pfi.49.2017.03.22.18.57.42 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 22 Mar 2017 18:57:42 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt From: Mahesh Jethanandani In-Reply-To: <20170322193508.GT7253@pfrc.org> Date: Wed, 22 Mar 2017 18:57:41 -0700 Cc: "rtg-bfd@ietf. org" Content-Transfer-Encoding: quoted-printable Message-Id: References: <148349024330.27920.12965506868600849117.idtracker@ietfa.amsl.com> <20170322193508.GT7253@pfrc.org> To: Jeffrey Haas X-Mailer: Apple Mail (2.3124) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Mar 2017 01:57:49 -0000 > On Mar 22, 2017, at 12:35 PM, Jeffrey Haas wrote: >=20 > This update is scheduled to be discussed at the upcoming session at = IETF-98 > in Chicago. =20 >=20 > The likely discussion is whether the new draft from Sonal should be > specifically tied to the advancement of the optimization draft. Our = prior > discussion with Alan had suggested some concern about the sequence = number > issues when we're using NULL authentication. >=20 > I suspect some good discussion will happen on this topic at the = upcoming > session and encourage the members of the Working Group to read both = drafts > in preparation. Yes, it would be helpful to read both the drafts in preparation for the = discussion. Optimized authentication is not a substitute for sequence number = obfuscation draft, and vice-versa. They offer different levels of = cost/benefit, where Draft Cost Benefit =3D=3D=3D=3D =3D=3D=3D=3D = =3D=3D=3D=3D=3D=3D sequence number obfuscation Low Medium (does not authenticate = the complete packet) optimized authentication Medium High (authenticates = entire =E2=80=9Cstate change=E2=80=9D packets) full authentication High High = (authenticates all packets) >=20 > -- Jeff >=20 >> On Jan 3, 2017, at 4:37 PM, internet-drafts@ietf.org wrote: >>=20 >>=20 >> A new version of I-D, draft-ietf-bfd-optimizing-authentication-02.txt >> has been successfully submitted by Mahesh Jethanandani and posted to = the >> IETF repository. >>=20 >> Name: draft-ietf-bfd-optimizing-authentication >> Revision: 02 >> Title: Optimizing BFD Authentication >> Document date: 2017-01-05 >> Group: bfd >> Pages: 8 >> URL: = https://www.ietf.org/internet-drafts/draft-ietf-bfd-optimizing-authenticat= ion-02.txt >> Status: = https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/= >> Htmlized: = https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-02 >> Diff: = https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-optimizing-authenticati= on-02 >>=20 >> Abstract: >> This document describes an optimization to BFD Authentication as >> described in Section 6.7 of BFD [RFC5880]. >>=20 >>=20 >>=20 >>=20 >>=20 >> Please note that it may take a couple of minutes from the time of = submission >> until the htmlized version and diff are available at tools.ietf.org. >>=20 >> The IETF Secretariat >=20 From nobody Thu Mar 23 08:24:36 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 944A2129781 for ; Thu, 23 Mar 2017 08:24:34 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.903 X-Spam-Level: X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Q5IUjAopTO9n for ; Thu, 23 Mar 2017 08:24:33 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 4B3D712943C for ; Thu, 23 Mar 2017 08:24:33 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 1BEF81E33F; Thu, 23 Mar 2017 11:30:58 -0400 (EDT) Date: Thu, 23 Mar 2017 11:30:58 -0400 From: Jeffrey Haas To: rtg-bfd@ietf.org Subject: Adoption request for draft-tanmir-rtgwg-bfd-mc-lag Message-ID: <20170323153057.GK27015@pfrc.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Mar 2017 15:24:34 -0000 We had presentations on draft-tanmir-rtgwg-bfd-mc-lag-(mpls|ip) during IETF 96. This work covers multi-chassis forms of BFD-on-LAG, similar to RFC 7130. After that presentation, the sense of the room was that this work was something the WG would like to adopt. This e-mail begins a formal adoption poll for one or both of these drafts. This poll ends on April 16. The timing of this poll is to give WG members a chance to read the draft for comment during the WG session in Chicago on Monday and also to set the date for two weeks after IETF 98 ends. Please respond to this mail to indicate your support or lack of support for this adoption. Unless otherwise noted, support will be interpreted as support for *both* documents. The chairs wish to remind the Working Group that these documents have IPR asserted against the mechanisms contained in these drafts. -- Jeff and Reshad From nobody Thu Mar 23 08:46:28 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id F08AB129405 for ; Thu, 23 Mar 2017 08:46:26 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.999 X-Spam-Level: X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tu0yroLl9Bu9 for ; Thu, 23 Mar 2017 08:46:25 -0700 (PDT) Received: from mail-wr0-x234.google.com (mail-wr0-x234.google.com [IPv6:2a00:1450:400c:c0c::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 032211275AB for ; Thu, 23 Mar 2017 08:46:25 -0700 (PDT) Received: by mail-wr0-x234.google.com with SMTP id l37so150485410wrc.1 for ; Thu, 23 Mar 2017 08:46:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=+jZ9CGbdcmvwkCK20ALL4Ele83UWifwK2feN8zrnwzk=; b=hfj3NHqo0Ki4C+lHQyYaE3JD2V+lVulMoiT88tQ2m+VtR/4iGsjtTPhOaFFJ74J/hH NrMJwqISs8n18JcdN6E3SoCMul7bScCYQSbsokg3zjRt768a6FykEbVAFWp65I3xtxUK nIMXh6OsKRGSBL6NtFkWq57p8Xc8Zrph6n1M1FqryfBwFV1rd1xb5uQTw0G16t8/rFFu heEtMSJF2zGZ4tPMjxRiLruPazqd+N5ouNIWTpTcGEd17p1KwsxqD+D+PemPmnQIjEA2 sHBJfTJCgEnAmvcv9/6OgGp2JUSYJrFXHkbf88U6/KgMAkSeK2mSwTYvxm4F6vmZd7rX +icg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=+jZ9CGbdcmvwkCK20ALL4Ele83UWifwK2feN8zrnwzk=; b=UfoWW0+GH7pTqKWR6Esbh/0TiXYpiSa7Q0IxwzuYt3iA8jMdbpZFhfaIDXTheHy8HZ N0nAYP4av0WoRMchnIrbAvF17CainkUKogpseOdfyGk9kLHQCblowIMpJVMhUs8Sdcr+ /lSQeZduQi6JP2CReo6L2snH975byMjL4h6AYLHRYnI1CQ1eo7hqIsWocF9Z6Pb3JmBK DJ9sg9Vnp0j02Jkum42OcVByQXFu1NvpnB5GAMyY3QOamV9A/yLxkjLXGLBWC59dz/eD 2HvboKLY1EZHncOrgQEqamx8yVADkhNgJI3VUMODMc+I2IQwNMwBjECTCWTksdXR4UMe emqQ== X-Gm-Message-State: AFeK/H0p/CqOHwr2fJdT9ZpYxr39lnTWFlUK//oQmJ2ALQ+V4uy/oEbhklD+57Aqzz+OVw== X-Received: by 10.223.160.17 with SMTP id k17mr3107471wrk.106.1490283983467; Thu, 23 Mar 2017 08:46:23 -0700 (PDT) Received: from [172.20.14.61] ([46.218.58.213]) by smtp.gmail.com with ESMTPSA id x69sm4861750wma.15.2017.03.23.08.46.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Mar 2017 08:46:22 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (1.0) Subject: Re: Adoption request for draft-tanmir-rtgwg-bfd-mc-lag From: Jeff Tantsura X-Mailer: iPhone Mail (14D27) In-Reply-To: <20170323153057.GK27015@pfrc.org> Date: Thu, 23 Mar 2017 16:46:22 +0100 Cc: rtg-bfd@ietf.org Content-Transfer-Encoding: quoted-printable Message-Id: References: <20170323153057.GK27015@pfrc.org> To: Jeffrey Haas Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Mar 2017 15:46:27 -0000 Support as co-author Regards, Jeff > On Mar 23, 2017, at 16:30, Jeffrey Haas wrote: >=20 > We had presentations on draft-tanmir-rtgwg-bfd-mc-lag-(mpls|ip) during IET= F 96. > This work covers multi-chassis forms of BFD-on-LAG, similar to RFC 7130. >=20 > After that presentation, the sense of the room was that this work was > something the WG would like to adopt. >=20 > This e-mail begins a formal adoption poll for one or both of these drafts.= > This poll ends on April 16. The timing of this poll is to give WG members= a > chance to read the draft for comment during the WG session in Chicago on > Monday and also to set the date for two weeks after IETF 98 ends. >=20 > Please respond to this mail to indicate your support or lack of support fo= r > this adoption. Unless otherwise noted, support will be interpreted as > support for *both* documents. >=20 > The chairs wish to remind the Working Group that these documents have IPR > asserted against the mechanisms contained in these drafts. >=20 > -- Jeff and Reshad >=20 From nobody Thu Mar 23 12:23:42 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id A3486129B88 for ; Thu, 23 Mar 2017 12:23:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uJCnG4h74fzV for ; Thu, 23 Mar 2017 12:23:23 -0700 (PDT) Received: from mail-ot0-x230.google.com (mail-ot0-x230.google.com [IPv6:2607:f8b0:4003:c0f::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 8B550131638 for ; Thu, 23 Mar 2017 12:23:21 -0700 (PDT) Received: by mail-ot0-x230.google.com with SMTP id a12so124749920ota.0 for ; Thu, 23 Mar 2017 12:23:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=w3RZQxhfd2mwLfh/9hm7en0ATQ7Sq8CXI+iRACqPGMM=; b=t6FOyXzQHtCXVvAWbztRiRiaGuRKDVtXBQVuuqE8TPus2nQPNRHuvUh4cJYJJeaMKc gUkIhd4tvp7GM5f66etzEEY1J/2/tDWdWyMRR+H0nQbIYS2dlS71az/rkVKqNGF/rU9T rAX4/rsIyeM6x9WOn9uu+6g567XsZtNsCClxm/xMqdeQ0WpZi9oUG7df5U9uaNw8TJUK 2u55CgEd16TkE3k0K7OAXpfnsSdaPZDjYsKO7EVhyPOxSOKmc8Ve+LgJBFetLN3+LddQ HCmXXGevfLrnoI3In9Hgt4huBP8W1i0L1uFGG/NEqfih/3CiBcqNTxO/dXYogmsDGZvn Fi+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=w3RZQxhfd2mwLfh/9hm7en0ATQ7Sq8CXI+iRACqPGMM=; b=dcJyytko73q+4IdsQGir6jPGH+FKl0WbFaRXCXOFsUuJQMELTQxjMLsAfsrNYxQ02l Lu6q3SKiW0bt+hYntq52TXVZwERqpEfSp891aAkCGpKnp7Qgp6dtS4tHS4lLNWClEsDc kLuozkQp6kS0+sv8GcxeRvHGsyY+Y45Yk8oagoMk2/sLTQN2KNFXpp8vNejtDDDNHSw2 BYSStpcyXi9jR20o1jhBag2WwzO3/e5PXx5yh92jIiZlxr58Nq09G5SLKSjnjrHFPfmW fh9voguHAth1tCnjU7iFzgKdovdx263E/x/YVKB/sd/LfsibkBo7kBQH7Rym0sDRxbVs G9kg== X-Gm-Message-State: AFeK/H26cf5PZaEDkATe6Gu9w0zqglhcoC/Isz2LJarrvULTz2mInvys2gYCEd1Z9rSq71kFrOsJG2Z/Ir6+Xg== X-Received: by 10.157.25.18 with SMTP id j18mr2207697ota.128.1490297000956; Thu, 23 Mar 2017 12:23:20 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.21.21 with HTTP; Thu, 23 Mar 2017 12:23:20 -0700 (PDT) In-Reply-To: <20170323153057.GK27015@pfrc.org> References: <20170323153057.GK27015@pfrc.org> From: Greg Mirsky Date: Thu, 23 Mar 2017 14:23:20 -0500 Message-ID: Subject: Re: Adoption request for draft-tanmir-rtgwg-bfd-mc-lag To: Jeffrey Haas , JMessenger@advaoptical.com Cc: "rtg-bfd@ietf.org" Content-Type: multipart/alternative; boundary=f4030435a8045a2343054b6acf36 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Mar 2017 19:23:32 -0000 --f4030435a8045a2343054b6acf36 Content-Type: text/plain; charset=UTF-8 Hi Jeff, Reshad, John, et. al, at our discussion in Berlin John pointed to recent extension of IEEE 802.1AX, Distributed Resilient Network Interface (DRNI). I've reviewed, to the best of my understanding, Section 9 in IEEE 802.1AX-2014 (I can send copy if anyone is interested) and I agree with John that MC-LAG can be viewed as special case of DRNI. But I'm not sure that trying to address monitoring of DRNI with BFD would be appropriate. I think that using CFM/G.8013, a.k.a. Y.1731 mechanisms to monitor Layer 2 entity, which DRNI is, seems more appropriate. If there are cases of DRNI, other then MC-LAG, that are of interest to IETF community, I'd certainly would like to discuss these and see how we can apply BFD to monitor them as unified entity as well as its individual interfaces, similar to RFC 7130. Regards, Greg On Thu, Mar 23, 2017 at 10:30 AM, Jeffrey Haas wrote: > We had presentations on draft-tanmir-rtgwg-bfd-mc-lag-(mpls|ip) during > IETF 96. > This work covers multi-chassis forms of BFD-on-LAG, similar to RFC 7130. > > After that presentation, the sense of the room was that this work was > something the WG would like to adopt. > > This e-mail begins a formal adoption poll for one or both of these drafts. > This poll ends on April 16. The timing of this poll is to give WG members > a > chance to read the draft for comment during the WG session in Chicago on > Monday and also to set the date for two weeks after IETF 98 ends. > > Please respond to this mail to indicate your support or lack of support for > this adoption. Unless otherwise noted, support will be interpreted as > support for *both* documents. > > The chairs wish to remind the Working Group that these documents have IPR > asserted against the mechanisms contained in these drafts. > > -- Jeff and Reshad > > --f4030435a8045a2343054b6acf36 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jeff, Reshad, John, et. al,
at our discussion in Berlin= =C2=A0John pointed to recent extension of IEEE 802.1AX, Distributed Res= ilient Network Interface (DRNI). I've reviewed, to the best of my under= standing, Section 9 in IEEE 802.1AX-2014 (I can send copy if anyone is inte= rested) and I agree with John that MC-LAG can be viewed as special case of = DRNI. But I'm not sure that trying to address monitoring of DRNI with B= FD would be appropriate. I think that using CFM/G.8013, a.k.a. Y.1731 mecha= nisms to monitor Layer 2 entity, which DRNI is, seems more appropriate. If = there are cases of DRNI, other then MC-LAG, that are of interest to IETF co= mmunity, I'd certainly would like to discuss these and see how we can a= pply BFD to monitor them as unified entity as well as its individual interf= aces, similar to RFC 7130.

Regards,
Greg=


On Thu, Mar 23, 2017 at 10:30 AM, Jeffrey Haas <jhaas@pfrc.org<= /a>> wrote:
We had presentation= s on draft-tanmir-rtgwg-bfd-mc-lag-(mpls|ip) during IETF 96.
This work covers multi-chassis forms of BFD-on-LAG, similar to RFC 7130.
After that presentation, the sense of the room was that this work was
something the WG would like to adopt.

This e-mail begins a formal adoption poll for one or both of these drafts.<= br> This poll ends on April 16.=C2=A0 The timing of this poll is to give WG mem= bers a
chance to read the draft for comment during the WG session in Chicago on Monday and also to set the date for two weeks after IETF 98 ends.

Please respond to this mail to indicate your support or lack of support for=
this adoption.=C2=A0 Unless otherwise noted, support will be interpreted as=
support for *both* documents.

The chairs wish to remind the Working Group that these documents have IPR asserted against the mechanisms contained in these drafts.

-- Jeff and Reshad


--f4030435a8045a2343054b6acf36-- From nobody Thu Mar 23 12:24:14 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 206C5129BEF for ; Thu, 23 Mar 2017 12:24:12 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.998 X-Spam-Level: X-Spam-Status: No, score=-1.998 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GlhSKIPAdBhb for ; Thu, 23 Mar 2017 12:24:03 -0700 (PDT) Received: from mail-ot0-x234.google.com (mail-ot0-x234.google.com [IPv6:2607:f8b0:4003:c0f::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B41E4131633 for ; Thu, 23 Mar 2017 12:23:56 -0700 (PDT) Received: by mail-ot0-x234.google.com with SMTP id y88so38831517ota.2 for ; Thu, 23 Mar 2017 12:23:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=ntXpPaukI5Zwu5XhOrc1FAx1aZ/y2/ARypnb/KMKTpc=; b=kBERkZpw+SNFjn0qiymP7MuYADYJLGEcycAXiqzRYxXa9aahTI/TnZtvwkTgswCRkE j79fFkyqU6ELXQ6kiDxOihAzI3xRoSCEuN24t8NaIQFzks5BNMWxa1YYh+2ei+z1TcG+ 22BBjHrvklUgHUDeKM5+LFBUJNsf+s13xcfOSOTIaGgr4S3AJ3K4oXs7YKDmD209NVq+ 3cNJd8khMijvf71fe0deq8oth97yzpOVLiDX9JxxyvR217lWcDkObouzvQLRmnFLetT0 Xmw5Vd0Y3+/lY3LHWJm6KJtYI6Za4HNixHohQRHHIz2YSw7lNCJ+4Z3g1H/yVisFubfo EWBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=ntXpPaukI5Zwu5XhOrc1FAx1aZ/y2/ARypnb/KMKTpc=; b=hCgIKw1eAVeIwubolkMCOmuquEVdai9QFCoMe/eZaT6OYk/4wbK5bMs/tP0EQMLUoH pOuACpjLpEwmIWXyA7U88E+UTsfeqEUSlEHaEM4Vbr9+5KN2gsBHL5079fsd0NVZBAAM A9tU+pzwxgyfpTVv+SUjGHp7vcCG5om1nR50FDwjGzza9gecscVXR7NMqgCMiuZK8Rvk j/4tTjhHBF+BBb1D1q9DD3pxAqbGXtzqFzycETXb/v9++XA+1Tz+FOnt6yVx8epvYhVY DJWK/nwulkrJ/tVDrZhmIl1B7Zlpjd8sXl0tWn9I7BGmxCJVcnnjMXFCb7Jr1KrHwuvZ FkrA== X-Gm-Message-State: AFeK/H3N9UYuPczFtr+5Qofiy1dDPfYORXXvGDTpUk63e1JP19t20m12n0kQqhF/HK3bti91pID9QojTDKXF4A== X-Received: by 10.157.42.20 with SMTP id t20mr2556512ota.206.1490297036159; Thu, 23 Mar 2017 12:23:56 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.21.21 with HTTP; Thu, 23 Mar 2017 12:23:55 -0700 (PDT) In-Reply-To: <20170323153057.GK27015@pfrc.org> References: <20170323153057.GK27015@pfrc.org> From: Greg Mirsky Date: Thu, 23 Mar 2017 14:23:55 -0500 Message-ID: Subject: Re: Adoption request for draft-tanmir-rtgwg-bfd-mc-lag To: Jeffrey Haas Cc: "rtg-bfd@ietf.org" Content-Type: multipart/alternative; boundary=001a113ceaf67342a6054b6ad1fd Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Mar 2017 19:24:12 -0000 --001a113ceaf67342a6054b6ad1fd Content-Type: text/plain; charset=UTF-8 Hi Jeff, Reshad, et. al., yes, support as co-author. Regards, Greg On Thu, Mar 23, 2017 at 10:30 AM, Jeffrey Haas wrote: > We had presentations on draft-tanmir-rtgwg-bfd-mc-lag-(mpls|ip) during > IETF 96. > This work covers multi-chassis forms of BFD-on-LAG, similar to RFC 7130. > > After that presentation, the sense of the room was that this work was > something the WG would like to adopt. > > This e-mail begins a formal adoption poll for one or both of these drafts. > This poll ends on April 16. The timing of this poll is to give WG members > a > chance to read the draft for comment during the WG session in Chicago on > Monday and also to set the date for two weeks after IETF 98 ends. > > Please respond to this mail to indicate your support or lack of support for > this adoption. Unless otherwise noted, support will be interpreted as > support for *both* documents. > > The chairs wish to remind the Working Group that these documents have IPR > asserted against the mechanisms contained in these drafts. > > -- Jeff and Reshad > > --001a113ceaf67342a6054b6ad1fd Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jeff, Reshad, et. al.,

yes, support = as co-author.

Regards,
Greg
<= div class=3D"gmail_extra">
On Thu, Mar 23, 20= 17 at 10:30 AM, Jeffrey Haas <jhaas@pfrc.org> wrote:
We had presentations on draft-tanmir-rtgwg-bfd-mc-l= ag-(mpls|ip) during IETF 96.
This work covers multi-chassis forms of BFD-on-LAG, similar to RFC 7130.
After that presentation, the sense of the room was that this work was
something the WG would like to adopt.

This e-mail begins a formal adoption poll for one or both of these drafts.<= br> This poll ends on April 16.=C2=A0 The timing of this poll is to give WG mem= bers a
chance to read the draft for comment during the WG session in Chicago on Monday and also to set the date for two weeks after IETF 98 ends.

Please respond to this mail to indicate your support or lack of support for=
this adoption.=C2=A0 Unless otherwise noted, support will be interpreted as=
support for *both* documents.

The chairs wish to remind the Working Group that these documents have IPR asserted against the mechanisms contained in these drafts.

-- Jeff and Reshad


--001a113ceaf67342a6054b6ad1fd-- From nobody Thu Mar 23 12:45:50 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 492E813164E for ; Thu, 23 Mar 2017 12:45:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.919 X-Spam-Level: X-Spam-Status: No, score=-1.919 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UENy72SJlcot for ; Thu, 23 Mar 2017 12:45:46 -0700 (PDT) Received: from mail.advaoptical.com (mail.advaoptical.com [91.217.199.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client 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(localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 960AC1200FC; Fri, 24 Mar 2017 08:40:16 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.903 X-Spam-Level: X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 79S1tLnoBRXI; Fri, 24 Mar 2017 08:40:14 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id C90D2129766; Fri, 24 Mar 2017 08:40:14 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id EDE161E34B; Fri, 24 Mar 2017 11:46:40 -0400 (EDT) Date: Fri, 24 Mar 2017 11:46:40 -0400 From: Jeffrey Haas To: Greg Mirsky Cc: "Reshad Rahman (rrahman)" , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Subject: Re: Correcting BFD Echo model Message-ID: <20170324154640.GO27015@pfrc.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 15:40:17 -0000 [continuing the top-posting heresy to preserve context] Greg, Our schedule is relatively open right now, and this matter is esoteric enough that it probably warrants a slide for the majority of the Working Group to follow this issue. Would you prepare a slide or two to use as a discussion point? I'll also use this opportunity to point out that in S-BFD scenarios, we have somewhat similar ambiguities since it's an on-demand service. -- Jeff On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote: > Hi Reshad, > thank you for providing the context to BFD Echo TX. Indeed, I'm familiar > with implementations that use BFD Echo as Echo request/reply and thus Tx > would be in RPC, not in configuration. I think that it would be good to > discuss this in Chicago unless we hear comments from others on the list. > > Regards, > Greg > > On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) > wrote: > > > Hi Greg, > > > > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval in RPC > > because all ping operations are done via RPC. I do not consider BFD echo > > to be “on demand” like LSP Ping (caveat: this is possibly due to the BFD > > configuration/implementation I am most familiar with). From nobody Fri Mar 24 09:07:42 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 44FB61296F2 for ; Fri, 24 Mar 2017 09:07:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.903 X-Spam-Level: X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4IVXs67k-geA for ; Fri, 24 Mar 2017 09:07:38 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id EB79512426E for ; Fri, 24 Mar 2017 09:07:37 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 6E0701E34B; Fri, 24 Mar 2017 12:14:04 -0400 (EDT) Date: Fri, 24 Mar 2017 12:14:04 -0400 From: Jeffrey Haas To: "Reshad Rahman (rrahman)" Cc: "rtg-bfd@ietf.org" Subject: Re: I-D Action: draft-ietf-bfd-yang-05.txt Message-ID: <20170324161404.GQ27015@pfrc.org> References: <148918117961.2935.12236490144244779567@ietfa.amsl.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 16:07:40 -0000 Authors, Thanks for continued work on the yang module. It does appear it's approaching a good level of maturity! I have a few comments from my recent read-through. I'd like to encourage other members of the Working Group to review the module. I'd also like to encourage the authors to reach out to other protocol groups to check the suitability of the module for interaction with their protocols. Some stream of thought comments: - TTL seems to be only a property of multi-hop sessions. How do you configure GTSM for single-hop sessions? - In single-hop, sessions are operationally keyed on "interface". However, there's also a "out-interface" node. How are they intended to be different? - state-change-reason in notification is a string type. While this is probably the fastest path to getting some code written, it's also the least machine usable mechanism. Has there been any discussion among the authors on how that might otherwise be addressed? - time-in-previous-state is oddly a string. Why not a time of some sort? - Future-proofing observation: An mpls-fec is not required to be an IP address, although that is pretty much its only major manifestation at the moment. This may cause weirdness down the road. - mpls-fec is of type ip-address. FECs are typicall prefixes. - bfd-diagnostic is missing code point 9. (See IANA issues.) - Suggest adding the range restriction 0..31 to the description for bfd-diagnostic. - Naming elements such as nbor, conc, etc. are rather unnecessarily truncated. While I realize that yang is somewhat human readable, it's mostly for machine interaction. Reasonably expanded names make a module easier to read, especially to English as a second language parties. This, however, needs to be balanced against things like "admin" which is already present in other BFD documents. - In the bfd-auth-replay-protection description, please include citations to the specific section of RFC 5880. - The bfd-all-session grouping includes source-port and dest-port. This may not be relevant to all transports of BFD. What discussion have you given to restricting this, if any? - rx-ttl's description is a bit confusing to read. I think you are trying to suggest that the received TTL should be <= this value to be acceptable? - potential nit on "ttl"; ipv6 calls this hop-count. Any discussion on the naming of this type among the authors? Features: Echo and demand mode are not pervasively implemented for BFD. (I've not actually heard of an implementation of demand mode.) I suspect these elements should be covered by if-feature? While I realize the elements are optionally usable in the configuration leaves, the lack of a feature might lead a netconf implementation with the thought that they can use this feature. What has been the author discussion on this point? IANA management of some module components: Several elements in this draft are things that will regularly need to be maintained. Examples include: - bfd-path-type - bfd-auth-replay-protection - bfd-diagnostic I suspect we wish to place these components in a module/modules that are IANA maintained. I'm a bit behind in current yang practices, but I suspect we have something like this defined now. It unfortunately has the headache that it impacts name-spacing issues for the consuming modules. Timing hints: Has any discussion been given to an operational module that might suggest what timer values are acceptable to an implementation? Note: I'm not suggesting this as part of the core module, but it's a common "what timers does your implementation support" question that typically happens. On Fri, Mar 10, 2017 at 09:29:45PM +0000, Reshad Rahman (rrahman) wrote: > Main changes from rev 04 are: > - Removed augment of network-instance, added reference to schema-mount > - bfd is not top-level anymore, augments control-plane-protocol from > RFC8022 > - Addeds section on Interaction with other YANG modules > > > > Regards, > BFD YANG authors. > > On 2017-03-10, 4:26 PM, "Rtg-bfd on behalf of internet-drafts@ietf.org" > wrote: > > > > >A New Internet-Draft is available from the on-line Internet-Drafts > >directories. > >This draft is a work item of the Bidirectional Forwarding Detection of > >the IETF. > > > > Title : Yang Data Model for Bidirectional Forwarding > >Detection (BFD) > > Authors : Reshad Rahman > > Lianshu Zheng > > Santosh Pallagatti > > Mahesh Jethanandani > > Greg Mirsky > > Filename : draft-ietf-bfd-yang-05.txt > > Pages : 53 > > Date : 2017-03-10 > > > >Abstract: > > This document defines a YANG data model that can be used to configure > > and manage Bidirectional Forwarding Detection (BFD). > > > > > > > >The IETF datatracker status page for this draft is: > >https://datatracker.ietf.org/doc/draft-ietf-bfd-yang/ > > > >There's also a htmlized version available at: > >https://tools.ietf.org/html/draft-ietf-bfd-yang-05 > > > >A diff from the previous version is available at: > >https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-yang-05 > > > > > >Please note that it may take a couple of minutes from the time of > >submission > >until the htmlized version and diff are available at tools.ietf.org. > > > >Internet-Drafts are also available by anonymous FTP at: > >ftp://ftp.ietf.org/internet-drafts/ > > From nobody Fri Mar 24 11:50:10 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 31824129458; 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Fri, 24 Mar 2017 11:50:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=FEHuebu/n292pjV4HRvXT1J1Ktt3sZvFbz5+yb/pG7c=; b=uZSVAW9abDrOYohsBlzEKNmk2gOHj6AJfPA4eJrymLE4R6sx5CrAtHrk5RJu+ImnoF PIemocConHamy1qdXCXmYw/bH30su9HJmAfMgh8535OWZallQjegROw7n11xYl7SPDT/ EBvclfxUzDbeQhOdaxt6cWJOHj7V3eftBgP9J+hw4Hqvs95ReY7f5odxXvYFSxJ8a9C9 QMGJFsRd+nGVsKZEkk8BjERgZs/o5AmUGXV3BIhtdalmeH4QNqQgPjwY0JXCPTjBGY0j Y1N9v5aNiHqkcJLiFkAzlqYoiqCknC1buWyhSDcnh3xqguAa+EdZw2nG8xFkV0Jwr94b Sn+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=FEHuebu/n292pjV4HRvXT1J1Ktt3sZvFbz5+yb/pG7c=; b=HM7pFTem9Y8oDQuHZf13JJs2urVzeyORjyT/Cg3hqqurms3wvJx9X5dK3M1QaQBX/P oO8yiGgCX3mveNK/UUpxQpNwVOTrk4rgwYO3Q1r7JsMOqTWdhqAtKz+rOYfHGpi8UBpb F+krgycmN57fd/gHUXIlUZ4jpVf+b9WCF6ToGVbdoxVLe3xqjgPsaGaYiDZ+e/0rHKHt pDUFzF2c736Cu18oQ5JAMKyx45hFTkfgeE+hKH9/heXNf06UVlXfLInz7tQoACqOfqwB cKNLYVN06eZYuZrSfnPyG1E3NjIg5pzHwEv2ITnwgshuTSE4K3qYpnWtvSnxWvlcSAS4 kCxA== X-Gm-Message-State: AFeK/H3GBc1PwtyJFFrUXR2V2/eRWoiXjeQdQuYzyQk5cnAoh5olrur5ZZg5HtReSXv06VBO0oKUebV5Hk/04g== X-Received: by 10.157.82.22 with SMTP id e22mr5809185oth.76.1490381405180; Fri, 24 Mar 2017 11:50:05 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.21.21 with HTTP; Fri, 24 Mar 2017 11:50:04 -0700 (PDT) In-Reply-To: <20170324154640.GO27015@pfrc.org> References: <20170324154640.GO27015@pfrc.org> From: Greg Mirsky Date: Fri, 24 Mar 2017 13:50:04 -0500 Message-ID: Subject: Re: Correcting BFD Echo model To: Jeffrey Haas Cc: "Reshad Rahman (rrahman)" , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Content-Type: multipart/alternative; boundary=f403043546d83c5c11054b7e76d7 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 18:50:08 -0000 --f403043546d83c5c11054b7e76d7 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Jeff, I'll be glad to put couple slides to help jumstart the discussion on BFD Echo. Regards, Greg On Fri, Mar 24, 2017 at 10:46 AM, Jeffrey Haas wrote: > [continuing the top-posting heresy to preserve context] > > Greg, > > Our schedule is relatively open right now, and this matter is esoteric > enough that it probably warrants a slide for the majority of the Working > Group to follow this issue. Would you prepare a slide or two to use as a > discussion point? > > I'll also use this opportunity to point out that in S-BFD scenarios, we > have > somewhat similar ambiguities since it's an on-demand service. > > -- Jeff > > On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote: > > Hi Reshad, > > thank you for providing the context to BFD Echo TX. Indeed, I'm familia= r > > with implementations that use BFD Echo as Echo request/reply and thus T= x > > would be in RPC, not in configuration. I think that it would be good to > > discuss this in Chicago unless we hear comments from others on the list= . > > > > Regards, > > Greg > > > > On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) < > rrahman@cisco.com> > > wrote: > > > > > Hi Greg, > > > > > > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval in RPC > > > because all ping operations are done via RPC. I do not consider BFD > echo > > > to be =E2=80=9Con demand=E2=80=9D like LSP Ping (caveat: this is poss= ibly due to the > BFD > > > configuration/implementation I am most familiar with). > > --f403043546d83c5c11054b7e76d7 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jeff,
I'll be glad to put couple slides to help= jumstart the discussion on BFD Echo.

Regards,
Greg

On Fri, Mar 24, 2017 at 10:46 AM, Jeffrey Haas <= jhaas@pfrc.org><= /span> wrote:
[continuing the top-posting= heresy to preserve context]

Greg,

Our schedule is relatively open right now, and this matter is esoteric
enough that it probably warrants a slide for the majority of the Working Group to follow this issue.=C2=A0 Would you prepare a slide or two to use a= s a
discussion point?

I'll also use this opportunity to point out that in S-BFD scenarios, we= have
somewhat similar ambiguities since it's an on-demand service.

-- Jeff

On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote:
> Hi Reshad,
> thank you for providing= the context to BFD Echo TX. Indeed, I'm familiar
> with implementations that use BFD Echo as Echo request/reply and thus = Tx
> would be in RPC, not in configuration. I think that it would be good t= o
> discuss this in Chicago unless we hear comments from others on the lis= t.
>
> Regards,
> Greg
>
> On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) <rrahman@cisco.com>
> wrote:
>
> > Hi Greg,
> >
> > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval = in RPC
> > because all ping operations are done via RPC.=C2=A0 I do not cons= ider BFD echo
> > to be =E2=80=9Con demand=E2=80=9D like LSP Ping (caveat: this is = possibly due to the BFD
> > configuration/implementation I am most familiar with).


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"Reshad Rahman (rrahman)" , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Subject: Re: Correcting BFD Echo model Thread-Topic: Correcting BFD Echo model Thread-Index: AQHSj8GzaZh47YcNe0Gey+/wXcwM+qF8OnCAgAAdrQCAAEFcAIAAGoQAgACC5gCAABprgIAnPeQAgAAzPgCAAAKZAA== Date: Fri, 24 Mar 2017 18:59:21 +0000 Message-ID: References: <20170324154640.GO27015@pfrc.org> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.82.243.227] Content-Type: multipart/alternative; boundary="_000_F6DB90E6B6DF417583DC188CDEF2D67Fciscocom_" MIME-Version: 1.0 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 18:59:26 -0000 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Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dFPFECOgFWr9; Fri, 24 Mar 2017 12:09:18 -0700 (PDT) Received: from mail-oi0-x22a.google.com (mail-oi0-x22a.google.com [IPv6:2607:f8b0:4003:c06::22a]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3373312987B; Fri, 24 Mar 2017 12:09:18 -0700 (PDT) Received: by mail-oi0-x22a.google.com with SMTP id l203so6113737oia.0; Fri, 24 Mar 2017 12:09:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=mK1bZ+jnxjwYA8gxMOEXExBH6AUeoha4nkHQaQRcx4I=; b=OGdYpelhwJQOgMZotVB4w4AKRz57XL/433n11DfS25n9xlpTrX6cPhPQ+hYz8q+l3w 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10.202.77.1 with SMTP id a1mr5650156oib.157.1490382557602; Fri, 24 Mar 2017 12:09:17 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.21.21 with HTTP; Fri, 24 Mar 2017 12:09:17 -0700 (PDT) In-Reply-To: References: <20170324154640.GO27015@pfrc.org> From: Greg Mirsky Date: Fri, 24 Mar 2017 14:09:17 -0500 Message-ID: Subject: Re: Correcting BFD Echo model To: "Carlos Pignataro (cpignata)" Cc: Jeff Haas , "Reshad Rahman (rrahman)" , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Content-Type: multipart/alternative; boundary=001a11c15cd2ecf1b8054b7eba86 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 19:09:21 -0000 --001a11c15cd2ecf1b8054b7eba86 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Carlos, indeed, the RFC 5880 does explain that the rate of BFD control packets transmitted in Async mode may be reduced when Echo is activated. If anyone is familiar with such implementation, I'd be glad to learn and discuss how this mechanism affects the data model. Regrettably, I don't have personal experience with using or implementing such mechanism. Greg On Fri, Mar 24, 2017 at 1:59 PM, Carlos Pignataro (cpignata) < cpignata@cisco.com> wrote: > Hi, Greg, > > It would be useful to understand uses of BFD Echo for on-demand scenarios= . > > It=E2=80=99s not clear how that would be: > > When a system is using the Echo function, it is advantageous to > choose a sedate reception rate for Control packets, since liveness > detection is being handled by the Echo packets. This can be > > Thanks, > > =E2=80=94 Carlos. > > On Mar 24, 2017, at 2:50 PM, Greg Mirsky wrote: > > Hi Jeff, > I'll be glad to put couple slides to help jumstart the discussion on BFD > Echo. > > Regards, > Greg > > On Fri, Mar 24, 2017 at 10:46 AM, Jeffrey Haas wrote: > >> [continuing the top-posting heresy to preserve context] >> >> Greg, >> >> Our schedule is relatively open right now, and this matter is esoteric >> enough that it probably warrants a slide for the majority of the Working >> Group to follow this issue. Would you prepare a slide or two to use as = a >> discussion point? >> >> I'll also use this opportunity to point out that in S-BFD scenarios, we >> have >> somewhat similar ambiguities since it's an on-demand service. >> >> -- Jeff >> >> On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote: >> > Hi Reshad, >> > thank you for providing the context to BFD Echo TX. Indeed, I'm famili= ar >> > with implementations that use BFD Echo as Echo request/reply and thus = Tx >> > would be in RPC, not in configuration. I think that it would be good t= o >> > discuss this in Chicago unless we hear comments from others on the lis= t. >> > >> > Regards, >> > Greg >> > >> > On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) < >> rrahman@cisco.com> >> > wrote: >> > >> > > Hi Greg, >> > > >> > > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval in RPC >> > > because all ping operations are done via RPC. I do not consider BFD >> echo >> > > to be =E2=80=9Con demand=E2=80=9D like LSP Ping (caveat: this is pos= sibly due to the >> BFD >> > > configuration/implementation I am most familiar with). >> >> > > --001a11c15cd2ecf1b8054b7eba86 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Carlos,
indeed, the RFC 5880 does explain that the = rate of BFD control packets transmitted in Async mode may be reduced when E= cho is activated. If anyone is familiar with such implementation, I'd b= e glad to learn and discuss how this mechanism affects the data model. Regr= ettably, I don't have personal experience with using or implementing su= ch mechanism.

Greg

On Fri, Mar 24, 2017 at 1:59 PM, Carl= os Pignataro (cpignata) <cpignata@cisco.com> wrote:
Hi, Greg,

It would be useful to understand uses of BFD Echo for on-demand scenar= ios.

It=E2=80=99s not clear how that would be:

=C2=A0 =C2=A0When a system is using the Echo function, it is advantage= ous to
=C2=A0 =C2=A0choose a sedate reception rate for Control packets, since= liveness
=C2=A0 =C2=A0detection is being handled by the Echo packets.=C2=A0 Thi= s can be

Thanks,

=E2=80=94 Carlos.

On Mar 24, 2017, at 2:50 PM, Greg Mirsky <gregimirsky@gmail.com> wrote:
Hi Jeff,
I'll be glad to put couple slides to help jumstart the discussion = on BFD Echo.

Regards,
Greg

On Fri, Mar 24, 2017 at 10:46 AM, Jeffrey Haas <= span dir=3D"ltr"> <jhaas@pfrc.org&= gt; wrote:
[continuing the top-posting heresy to preserve context]

Greg,

Our schedule is relatively open right now, and this matter is esoteric
enough that it probably warrants a slide for the majority of the Working Group to follow this issue.=C2=A0 Would you prepare a slide or two to use a= s a
discussion point?

I'll also use this opportunity to point out that in S-BFD scenarios, we= have
somewhat similar ambiguities since it's an on-demand service.

-- Jeff

On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote:
> Hi Reshad,
> thank you for providing the con= text to BFD Echo TX. Indeed, I'm familiar
> with implementations that use BFD Echo as Echo request/reply and thus = Tx
> would be in RPC, not in configuration. I think that it would be good t= o
> discuss this in Chicago unless we hear comments from others on the lis= t.
>
> Regards,
> Greg
>
> On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) <rrahman@cisco.com> > wrote:
>
> > Hi Greg,
> >
> > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval = in RPC
> > because all ping operations are done via RPC.=C2=A0 I do not cons= ider BFD echo
> > to be =E2=80=9Con demand=E2=80=9D like LSP Ping (caveat: this is = possibly due to the BFD
> > configuration/implementation I am most familiar with).




--001a11c15cd2ecf1b8054b7eba86-- From nobody Fri Mar 24 12:29:03 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8341A129490; Fri, 24 Mar 2017 12:29:01 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.903 X-Spam-Level: X-Spam-Status: No, score=-1.903 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XxioOPK2h5Xi; Fri, 24 Mar 2017 12:29:00 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id EE83212948B; Fri, 24 Mar 2017 12:28:59 -0700 (PDT) Received: from dresden.attlocal.net (99-59-193-67.lightspeed.livnmi.sbcglobal.net [99.59.193.67]) by slice.pfrc.org (Postfix) with ESMTPSA id 5CF1E1E348; Fri, 24 Mar 2017 15:35:26 -0400 (EDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\)) Subject: Re: Correcting BFD Echo model From: Jeffrey Haas In-Reply-To: Date: Fri, 24 Mar 2017 15:28:58 -0400 Cc: "Carlos Pignataro (cpignata)" , Reshad Rahman , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Content-Transfer-Encoding: quoted-printable Message-Id: <3708AF72-D97F-4C79-B3B2-C5C68F942395@pfrc.org> References: <20170324154640.GO27015@pfrc.org> To: Greg Mirsky X-Mailer: Apple Mail (2.3259) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 19:29:01 -0000 > On Mar 24, 2017, at 3:09 PM, Greg Mirsky = wrote: >=20 > Hi Carlos, > indeed, the RFC 5880 does explain that the rate of BFD control packets = transmitted in Async mode may be reduced when Echo is activated. If = anyone is familiar with such implementation, I'd be glad to learn and = discuss how this mechanism affects the data model. Regrettably, I don't = have personal experience with using or implementing such mechanism. My *suspicion* is that the configuration would represent a set of = parameters for both async mode and echo mode. These will not alter = themselves automatically. The operational mode might reflect timers that have backed off. = However, this is also true if an implementation does various forms of = session auto-tuning. An example I'm aware of is a decrease in timer = aggressiveness as part of a high availability switchover event. -- Jeff From nobody Fri Mar 24 13:33:53 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B45CC12950C for ; Fri, 24 Mar 2017 13:33:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.523 X-Spam-Level: X-Spam-Status: No, score=-14.523 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VVJ897G7oR25 for ; Fri, 24 Mar 2017 13:33:50 -0700 (PDT) Received: from alln-iport-4.cisco.com (alln-iport-4.cisco.com [173.37.142.91]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2C3AD128854 for ; Fri, 24 Mar 2017 13:33:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3653; q=dns/txt; s=iport; t=1490387630; x=1491597230; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=YtCMNCUhWxNOXKAwOhtLCrQt9nLq/gvbTOEddknmqyo=; b=hCaMlVwpk6w0/MeyJmnErs82DOFvX3Zq9bgUqrZdlPARCp9XSNnvSTV9 LqhLUUidw47LJB765LgqojmD4pTyWEq6U57RT7iUcJKVQp4zL3SIvRRvR y4JvXpNtl+pKNccLMAavphrCE6B/qqePJipLpxZm+Pxf27JBEY0Sg5Pki I=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0AVAQAPgtVY/4ENJK1dGQEBAQEBAQEBA?= =?us-ascii?q?QEBBwEBAQEBg1RhgQsHjWqRT4gWjTOCDiyFdgKDKT8YAQIBAQEBAQEBayiFFQE?= =?us-ascii?q?BAQECAXAHAhACAQgOCi4hESUCBAENBYlvAw0IDqxNhzENgwcBAQEBAQEBAQEBA?= =?us-ascii?q?QEBAQEBAQEBAQEdhk6Eb4JRRoE9hWUBBI9gQYt+OgGGeocahDaBfFSEVoNXhjO?= =?us-ascii?q?IV4IWiHcBHziBBFkVGIU3gUp1iHqBDQEBAQ?= X-IronPort-AV: E=Sophos;i="5.36,216,1486425600"; d="scan'208";a="401674903" Received: from alln-core-9.cisco.com ([173.36.13.129]) by alln-iport-4.cisco.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 24 Mar 2017 20:33:49 +0000 Received: from XCH-RCD-001.cisco.com (xch-rcd-001.cisco.com [173.37.102.11]) by alln-core-9.cisco.com (8.14.5/8.14.5) with ESMTP id v2OKXnSR023459 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 24 Mar 2017 20:33:49 GMT Received: from xch-rcd-005.cisco.com (173.37.102.15) by XCH-RCD-001.cisco.com (173.37.102.11) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Fri, 24 Mar 2017 15:33:48 -0500 Received: from xch-rcd-005.cisco.com ([173.37.102.15]) by XCH-RCD-005.cisco.com ([173.37.102.15]) with mapi id 15.00.1210.000; Fri, 24 Mar 2017 15:33:48 -0500 From: "Reshad Rahman (rrahman)" To: Mahesh Jethanandani , Jeffrey Haas CC: "rtg-bfd@ietf. org" Subject: Re: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt Thread-Topic: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt Thread-Index: AQHSZiLAlo/tJTTLxUS5nmkdrVBMBaEn33GAgHou7gCAAGrigIAChyAA Date: Fri, 24 Mar 2017 20:33:48 +0000 Message-ID: References: <148349024330.27920.12965506868600849117.idtracker@ietfa.amsl.com> <20170322193508.GT7253@pfrc.org> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.6.8.160830 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.86.242.190] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <920DF8569708BE4282264922C4F08870@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 20:33:53 -0000 Hi Mahesh, Couple of questions/comments: 1) I thought the secure sequence number was needed for the NULL Auth TLV in the optimizing-authentication draft (to make NULL Auth TLV more secure as per comments from security folks). I guess it could be used with full authentication also. So I don=B9t understand how secure sequence number can be used =B3standalone=B2 as seems to be implied by your cost/benefit table below. 2) Section 2 mentions =B3If the two ends have not previously negotiated which frames they will transmit or receive with authentication enabled, then the BFD session will fail to come up, because at least one end will expect every frame to be authenticated.=B2 How is this negotiation done? Or is this done via configuration aka outside the scope of this document? Regards, Reshad. On 2017-03-22, 9:57 PM, "Rtg-bfd on behalf of Mahesh Jethanandani" wrote: > >> On Mar 22, 2017, at 12:35 PM, Jeffrey Haas wrote: >>=20 >> This update is scheduled to be discussed at the upcoming session at >>IETF-98 >> in Chicago. =20 >>=20 >> The likely discussion is whether the new draft from Sonal should be >> specifically tied to the advancement of the optimization draft. Our >>prior >> discussion with Alan had suggested some concern about the sequence >>number >> issues when we're using NULL authentication. >>=20 >> I suspect some good discussion will happen on this topic at the upcoming >> session and encourage the members of the Working Group to read both >>drafts >> in preparation. > >Yes, it would be helpful to read both the drafts in preparation for the >discussion. > >Optimized authentication is not a substitute for sequence number >obfuscation draft, and vice-versa. They offer different levels of >cost/benefit, where > >Draft Cost Benefit >=3D=3D=3D=3D =3D=3D=3D=3D = =3D=3D=3D=3D=3D=3D >sequence number obfuscation Low Medium (does not authenticate >the complete packet) >optimized authentication Medium High (authenticates >entire =B3state change=B2 packets) >full authentication High High >(authenticates all packets) > >>=20 >> -- Jeff >>=20 >>> On Jan 3, 2017, at 4:37 PM, internet-drafts@ietf.org wrote: >>>=20 >>>=20 >>> A new version of I-D, draft-ietf-bfd-optimizing-authentication-02.txt >>> has been successfully submitted by Mahesh Jethanandani and posted to >>>the >>> IETF repository. >>>=20 >>> Name: draft-ietf-bfd-optimizing-authentication >>> Revision: 02 >>> Title: Optimizing BFD Authentication >>> Document date: 2017-01-05 >>> Group: bfd >>> Pages: 8 >>> URL: =20 >>>https://www.ietf.org/internet-drafts/draft-ietf-bfd-optimizing-authentic >>>ation-02.txt >>> Status: =20 >>>https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authenticatio >>>n/ >>> Htmlized: =20 >>>https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-02 >>> Diff: =20 >>>https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-optimizing-authentica= ti >>>on-02 >>>=20 >>> Abstract: >>> This document describes an optimization to BFD Authentication as >>> described in Section 6.7 of BFD [RFC5880]. >>>=20 >>>=20 >>>=20 >>>=20 >>>=20 >>> Please note that it may take a couple of minutes from the time of >>>submission >>> until the htmlized version and diff are available at tools.ietf.org. >>>=20 >>> The IETF Secretariat >>=20 > From nobody Fri Mar 24 15:35:48 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D9DD4128CD5; 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24 Mar 2017 22:35:43 +0000 Received: from XCH-ALN-019.cisco.com (xch-aln-019.cisco.com [173.36.7.29]) by alln-core-9.cisco.com (8.14.5/8.14.5) with ESMTP id v2OMZhmR011584 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Fri, 24 Mar 2017 22:35:43 GMT Received: from xch-rcd-005.cisco.com (173.37.102.15) by XCH-ALN-019.cisco.com (173.36.7.29) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Fri, 24 Mar 2017 17:35:42 -0500 Received: from xch-rcd-005.cisco.com ([173.37.102.15]) by XCH-RCD-005.cisco.com ([173.37.102.15]) with mapi id 15.00.1210.000; Fri, 24 Mar 2017 17:35:42 -0500 From: "Reshad Rahman (rrahman)" To: Jeffrey Haas , Greg Mirsky CC: "Carlos Pignataro (cpignata)" , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Subject: Re: Correcting BFD Echo model Thread-Topic: Correcting BFD Echo model Thread-Index: AQHSj8Gxk5FkqTOyS0attHx6x8g/UaF791cAgABxigCAAEFcAIAAGoQAgAAvKQCAAG4ngIAnPeUAgAAzPgCAAAKYgIAAAsaAgAAFgAD///EfgA== Date: Fri, 24 Mar 2017 22:35:42 +0000 Message-ID: References: <20170324154640.GO27015@pfrc.org> <3708AF72-D97F-4C79-B3B2-C5C68F942395@pfrc.org> In-Reply-To: <3708AF72-D97F-4C79-B3B2-C5C68F942395@pfrc.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.6.8.160830 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.86.242.190] Content-Type: text/plain; charset="iso-8859-1" Content-ID: <18F33A6D5CEBEB40B2EA52ECC0679EC1@emea.cisco.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Mar 2017 22:35:47 -0000 I am familiar with an implementation which supports echo and reduces rate of control packets when echo is enabled. In that implementation, the configuration has desired interval and multiplier, there isn=B9t different timer configurations for async and echo. Echo is enabled by default but there is config knob to disable echo. The operational model does show the rates at which control and echo packets are being transmitted. But back to Greg=B9s original question, I=B9d like to hear from other BFD implementations which support echo. Is echo enabled "on demand=B2 e.g. For = a small duration like ping, or is it continuous? Regards, Reshad. On 2017-03-24, 3:28 PM, "Jeffrey Haas" wrote: > >> On Mar 24, 2017, at 3:09 PM, Greg Mirsky wrote: >>=20 >> Hi Carlos, >> indeed, the RFC 5880 does explain that the rate of BFD control packets >>transmitted in Async mode may be reduced when Echo is activated. If >>anyone is familiar with such implementation, I'd be glad to learn and >>discuss how this mechanism affects the data model. Regrettably, I don't >>have personal experience with using or implementing such mechanism. > >My *suspicion* is that the configuration would represent a set of >parameters for both async mode and echo mode. These will not alter >themselves automatically. > >The operational mode might reflect timers that have backed off. However, >this is also true if an implementation does various forms of session >auto-tuning. An example I'm aware of is a decrease in timer >aggressiveness as part of a high availability switchover event. > >-- Jeff > From nobody Fri Mar 24 19:05:53 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 49C6A1299BD for ; Fri, 24 Mar 2017 19:05:52 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -14.522 X-Spam-Level: X-Spam-Status: No, score=-14.522 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RP_MATCHES_RCVD=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0Y7BoX_g2AHX for ; Fri, 24 Mar 2017 19:05:49 -0700 (PDT) Received: from rcdn-iport-5.cisco.com (rcdn-iport-5.cisco.com [173.37.86.76]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 81EDD128BE1 for ; Fri, 24 Mar 2017 19:05:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=7333; q=dns/txt; s=iport; t=1490407549; x=1491617149; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=A/xoBQg93upDz2iQ+l5IRtN0B4w+Du8Nd3nxuxsKRjE=; b=UseYDaqXjID73263F7XcsnqsD2DSXxbZY3nQxKBJoMYhV3BkzpdnyQOE /RmzmBJbhM+oyl7u+tVNhn2GEfCi1Qi338Y9jzCMZvY9uhrpp45UPLiME B5j+W6V0KXIhzuv/L/Ix4SaLf5DMl5LXDuHB3pWOo7KdC2l0/z097WzkU U=; X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0ASAQAy0NVY/5tdJa1UCRkBAQEBAQEBA?= =?us-ascii?q?QEBAQcBAQEBAYNUYYELB41qkU+VSYIOKoV4AoMpPxgBAgEBAQEBAQFrKIUWAQV?= =?us-ascii?q?lFBACAQgOCi4yJQIEDgWKBw6tGopJAQEBAQEBAQEBAQEBAQEBAQEBAQEBHYZOh?= =?us-ascii?q?G+DF4EWJ4VlBY9gjHkBhnqLUIF8VIRWg1eGM5NkAR84gQRZFRiHAAF1iHqBDQE?= =?us-ascii?q?BAQ?= X-IronPort-AV: E=Sophos;i="5.36,217,1486425600"; d="scan'208";a="6646367" Received: from rcdn-core-4.cisco.com ([173.37.93.155]) by rcdn-iport-5.cisco.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Mar 2017 02:05:48 +0000 Received: from XCH-ALN-002.cisco.com (xch-aln-002.cisco.com [173.36.7.12]) by rcdn-core-4.cisco.com (8.14.5/8.14.5) with ESMTP id v2P25msB004176 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Sat, 25 Mar 2017 02:05:48 GMT Received: from xch-rcd-005.cisco.com (173.37.102.15) by XCH-ALN-002.cisco.com (173.36.7.12) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Fri, 24 Mar 2017 21:05:47 -0500 Received: from xch-rcd-005.cisco.com ([173.37.102.15]) by XCH-RCD-005.cisco.com ([173.37.102.15]) with mapi id 15.00.1210.000; Fri, 24 Mar 2017 21:05:47 -0500 From: "Reshad Rahman (rrahman)" To: Jeffrey Haas CC: "rtg-bfd@ietf.org" Subject: Re: I-D Action: draft-ietf-bfd-yang-05.txt Thread-Topic: I-D Action: draft-ietf-bfd-yang-05.txt Thread-Index: AQHSmeT6ATa4gSjLkUWMG3euTq2wNqGOp9SAgBXrgwCAAGE+gA== Date: Sat, 25 Mar 2017 02:05:47 +0000 Message-ID: References: <148918117961.2935.12236490144244779567@ietfa.amsl.com> <20170324161404.GQ27015@pfrc.org> In-Reply-To: <20170324161404.GQ27015@pfrc.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/14.6.8.160830 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.86.242.190] Content-Type: text/plain; charset="Windows-1252" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Mar 2017 02:05:52 -0000 Thanks Jeff for review + detailed comments, please see inline. Co-authors, feel free to chime in. We=B9ll meet to discuss in Chicago. On 2017-03-24, 12:14 PM, "Jeffrey Haas" wrote: >Authors, > >Thanks for continued work on the yang module. It does appear it's >approaching a good level of maturity! > >I have a few comments from my recent read-through. I'd like to encourage >other members of the Working Group to review the module. I'd also like to >encourage the authors to reach out to other protocol groups to check the >suitability of the module for interaction with their protocols. > >Some stream of thought comments: >- TTL seems to be only a property of multi-hop sessions. How do you > configure GTSM for single-hop sessions? TTL must be 255 as per section 5 of RFC5881? =20 >- In single-hop, sessions are operationally keyed on "interface". >However, > there's also a "out-interface" node. How are they intended to be > different? This is for the case where =B3interface=B2 is a virtual interface, =B3out-interface=B2 would indicate the physical interface. Thinking more ab= out this, we should consider taking it out of the base model, vendors who want to support this can do augment. >- state-change-reason in notification is a string type. While this is > probably the fastest path to getting some code written, it's also the > least machine usable mechanism. Has there been any discussion among the > authors on how that might otherwise be addressed? You=B9re the first one to bring it up :-) So you=B9d like us to e.g. l= ook into defining an identity for this? =20 >- time-in-previous-state is oddly a string. Why not a time of some sort? I agree. >- Future-proofing observation: An mpls-fec is not required to be an IP > address, although that is pretty much its only major manifestation at >the > moment. This may cause weirdness down the road. So are you suggesting we use a choice too cater for this? >- mpls-fec is of type ip-address. FECs are typicall prefixes. Ack. >- bfd-diagnostic is missing code point 9. (See IANA issues.) Ack. >- Suggest adding the range restriction 0..31 to the description for > bfd-diagnostic. Ack. >- Naming elements such as nbor, conc, etc. are rather unnecessarily > truncated. While I realize that yang is somewhat human readable, it's > mostly for machine interaction. Reasonably expanded names make a module > easier to read, especially to English as a second language parties. >This, > however, needs to be balanced against things like "admin" which is >already > present in other BFD documents. Ack. >- In the bfd-auth-replay-protection description, please include citations >to > the specific section of RFC 5880. Ack. >- The bfd-all-session grouping includes source-port and dest-port. This >may > not be relevant to all transports of BFD. What discussion have you >given > to restricting this, if any? Good point. You=B9re referring to encaps such as ACH I assume? >- rx-ttl's description is a bit confusing to read. I think you are trying > to suggest that the received TTL should be <=3D this value to be >acceptable? >=3D from what recall. We=B9ll discuss this amongst authors. >- potential nit on "ttl"; ipv6 calls this hop-count. Any discussion on >the > naming of this type among the authors? None but we will. > > >Features: >Echo and demand mode are not pervasively implemented for BFD. (I've not >actually heard of an implementation of demand mode.) I suspect these >elements should be covered by if-feature? While I realize the elements >are >optionally usable in the configuration leaves, the lack of a feature might >lead a netconf implementation with the thought that they can use this >feature. What has been the author discussion on this point? We have had some discussions on this. I agree that we should add if-feature. Authors will discuss. > >IANA management of some module components: >Several elements in this draft are things that will regularly need to be >maintained. Examples include: >- bfd-path-type >- bfd-auth-replay-protection >- bfd-diagnostic > >I suspect we wish to place these components in a module/modules that are >IANA maintained. I'm a bit behind in current yang practices, but I >suspect >we have something like this defined now. It unfortunately has the >headache >that it impacts name-spacing issues for the consuming modules. Hadn=B9t thought of that. I suspect BFD isn=B9t the first module to ne= ed this=8A. > >Timing hints: >Has any discussion been given to an operational module that might suggest >what timer values are acceptable to an implementation? Note: I'm not >suggesting this as part of the core module, but it's a common "what timers >does your implementation support" question that typically happens. No discussions on this. We=B9ll have to discuss. What is tricky with this is that some implementations support different timer ranges based on =B3path-type=B2. E.g. 5 ms mayb be supported for single-hop but for multi-h= op the minimum could be 150 ms. Regards, Reshad. > > >On Fri, Mar 10, 2017 at 09:29:45PM +0000, Reshad Rahman (rrahman) wrote: >> Main changes from rev 04 are: >> - Removed augment of network-instance, added reference to schema-mount >> - bfd is not top-level anymore, augments control-plane-protocol from >> RFC8022 >> - Addeds section on Interaction with other YANG modules >>=20 >>=20 >>=20 >> Regards, >> BFD YANG authors. >>=20 >> On 2017-03-10, 4:26 PM, "Rtg-bfd on behalf of internet-drafts@ietf.org" >> wrote: >>=20 >> > >> >A New Internet-Draft is available from the on-line Internet-Drafts >> >directories. >> >This draft is a work item of the Bidirectional Forwarding Detection of >> >the IETF. >> > >> > Title : Yang Data Model for Bidirectional Forwarding >> >Detection (BFD) >> > Authors : Reshad Rahman >> > Lianshu Zheng >> > Santosh Pallagatti >> > Mahesh Jethanandani >> > Greg Mirsky >> > Filename : draft-ietf-bfd-yang-05.txt >> > Pages : 53 >> > Date : 2017-03-10 >> > >> >Abstract: >> > This document defines a YANG data model that can be used to >>configure >> > and manage Bidirectional Forwarding Detection (BFD). >> > >> > >> > >> >The IETF datatracker status page for this draft is: >> >https://datatracker.ietf.org/doc/draft-ietf-bfd-yang/ >> > >> >There's also a htmlized version available at: >> >https://tools.ietf.org/html/draft-ietf-bfd-yang-05 >> > >> >A diff from the previous version is available at: >> >https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-yang-05 >> > >> > >> >Please note that it may take a couple of minutes from the time of >> >submission >> >until the htmlized version and diff are available at tools.ietf.org. >> > >> >Internet-Drafts are also available by anonymous FTP at: >> >ftp://ftp.ietf.org/internet-drafts/ >> > From nobody Sat Mar 25 15:21:48 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 57A6812944D for ; 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Sat, 25 Mar 2017 15:21:44 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.21.21 with HTTP; Sat, 25 Mar 2017 15:21:44 -0700 (PDT) In-Reply-To: References: <148349024330.27920.12965506868600849117.idtracker@ietfa.amsl.com> <20170322193508.GT7253@pfrc.org> From: Greg Mirsky Date: Sat, 25 Mar 2017 17:21:44 -0500 Message-ID: Subject: Re: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt To: "Reshad Rahman (rrahman)" Cc: Mahesh Jethanandani , Jeffrey Haas , "rtg-bfd@ietf. org" Content-Type: multipart/alternative; boundary=f4030435b04c062f68054b958978 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Mar 2017 22:21:47 -0000 --f4030435b04c062f68054b958978 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Dear Authors, thank you for the update but I still cannot find description of how the proposed authentication mechanism, should we refer to it as "triggered authentication", as it applies to use of authentication upon state change as well as timer expiration, affects BFD State Machine. I do believe that, especially when state is Up and authentication triggered by a timer, BFD state machine must be updated to clarify when the received authenticated packet is validated. I'm looking forward to discussion at the meeting. Regards, Greg On Fri, Mar 24, 2017 at 3:33 PM, Reshad Rahman (rrahman) wrote: > Hi Mahesh, > > Couple of questions/comments: > > 1) I thought the secure sequence number was needed for the NULL Auth TLV > in the optimizing-authentication draft (to make NULL Auth TLV more secure > as per comments from security folks). I guess it could be used with full > authentication also. So I don=C2=B9t understand how secure sequence numbe= r can > be used =C2=B3standalone=C2=B2 as seems to be implied by your cost/benefi= t table > below. > 2) Section 2 mentions =C2=B3If the two ends have not previously negotiate= d > which frames they will transmit or receive with authentication enabled, > then the BFD session will fail to come up, because at least one end will > expect every frame to be authenticated.=C2=B2 How is this negotiation don= e? Or > is this done via configuration aka outside the scope of this document? > > > Regards, > Reshad. > > On 2017-03-22, 9:57 PM, "Rtg-bfd on behalf of Mahesh Jethanandani" > wrote: > > > > >> On Mar 22, 2017, at 12:35 PM, Jeffrey Haas wrote: > >> > >> This update is scheduled to be discussed at the upcoming session at > >>IETF-98 > >> in Chicago. > >> > >> The likely discussion is whether the new draft from Sonal should be > >> specifically tied to the advancement of the optimization draft. Our > >>prior > >> discussion with Alan had suggested some concern about the sequence > >>number > >> issues when we're using NULL authentication. > >> > >> I suspect some good discussion will happen on this topic at the upcomi= ng > >> session and encourage the members of the Working Group to read both > >>drafts > >> in preparation. > > > >Yes, it would be helpful to read both the drafts in preparation for the > >discussion. > > > >Optimized authentication is not a substitute for sequence number > >obfuscation draft, and vice-versa. They offer different levels of > >cost/benefit, where > > > >Draft Cost Benefit > >=3D=3D=3D=3D =3D=3D=3D=3D = =3D=3D=3D=3D=3D=3D > >sequence number obfuscation Low Medium (does not authenticate > >the complete packet) > >optimized authentication Medium High (authenticates > >entire =C2=B3state change=C2=B2 packets) > >full authentication High High > >(authenticates all packets) > > > >> > >> -- Jeff > >> > >>> On Jan 3, 2017, at 4:37 PM, internet-drafts@ietf.org wrote: > >>> > >>> > >>> A new version of I-D, draft-ietf-bfd-optimizing-authentication-02.txt > >>> has been successfully submitted by Mahesh Jethanandani and posted to > >>>the > >>> IETF repository. > >>> > >>> Name: draft-ietf-bfd-optimizing-authentication > >>> Revision: 02 > >>> Title: Optimizing BFD Authentication > >>> Document date: 2017-01-05 > >>> Group: bfd > >>> Pages: 8 > >>> URL: > >>>https://www.ietf.org/internet-drafts/draft-ietf- > bfd-optimizing-authentic > >>>ation-02.txt > >>> Status: > >>>https://datatracker.ietf.org/doc/draft-ietf-bfd- > optimizing-authenticatio > >>>n/ > >>> Htmlized: > >>>https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-0= 2 > >>> Diff: > >>>https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd- > optimizing-authenticati > >>>on-02 > >>> > >>> Abstract: > >>> This document describes an optimization to BFD Authentication as > >>> described in Section 6.7 of BFD [RFC5880]. > >>> > >>> > >>> > >>> > >>> > >>> Please note that it may take a couple of minutes from the time of > >>>submission > >>> until the htmlized version and diff are available at tools.ietf.org. > >>> > >>> The IETF Secretariat > >> > > > > --f4030435b04c062f68054b958978 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Dear Authors,
thank you for the update but I still can= not find description of how the proposed authentication mechanism, should w= e refer to it as "triggered authentication", as it applies to use= of authentication upon state change as well as timer expiration, affects B= FD State Machine. I do believe that, especially when state is Up and authen= tication triggered by a timer, BFD state machine must be updated to clarify= when the received authenticated packet is validated.
I'm loo= king forward to discussion at the meeting.

Regards= ,
Greg

On Fri, Mar 24, 2017 at 3:33 PM, Reshad Rahman (rrahman) <rrahm= an@cisco.com> wrote:
Hi Mah= esh,

Couple of questions/comments:

1) I thought the secure sequence number was needed for the NULL Auth TLV in the optimizing-authentication draft (to make NULL Auth TLV more secure as per comments from security folks). I guess it could be used with full authentication also. So I don=C2=B9t understand how secure sequence number = can
be used =C2=B3standalone=C2=B2 as seems to be implied by your cost/benefit = table
below.
2) Section 2 mentions =C2=B3If the two ends have not previously negotiated<= br> which frames they will transmit or receive with authentication enabled,
then the BFD session will fail to come up, because at least one end will expect every frame to be authenticated.=C2=B2 How is this negotiation done?= Or
is this done via configuration aka outside the scope of this document?


Regards,
Reshad.

On 2017-03-22, 9:57 PM, "Rtg-bfd on behalf of Mahesh Jethanandani"= ;
<rtg-bfd-bounces@ietf.org on behalf of mjethanandani@gmail.com> wrote:

>
>> On Mar 22, 2017, at 12:35 PM, Jeffrey Haas <jhaas@pfrc.org> wrote:
>>
>> This update is scheduled to be discussed at the upcoming session a= t
>>IETF-98
>> in Chicago.
>>
>> The likely discussion is whether the new draft from Sonal should b= e
>> specifically tied to the advancement of the optimization draft.=C2= =A0 Our
>>prior
>> discussion with Alan had suggested some concern about the sequence=
>>number
>> issues when we're using NULL authentication.
>>
>> I suspect some good discussion will happen on this topic at the up= coming
>> session and encourage the members of the Working Group to read bot= h
>>drafts
>> in preparation.
>
>Yes, it would be helpful to read both the drafts in preparation for the=
>discussion.
>
>Optimized authentication is not a substitute for sequence number
>obfuscation draft, and vice-versa. They offer different levels of
>cost/benefit, where
>
>Draft=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0Cost=C2=A0 =C2=A0 =C2=A0 =C2=A0 Benefit
>=3D=3D=3D=3D=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =3D=3D=3D=3D=C2=A0 =C2=A0 =C2=A0 =C2=A0=3D=3D=3D=3D=3D= =3D
>sequence number obfuscation=C2=A0 =C2=A0 =C2=A0Low=C2=A0 =C2=A0 =C2=A0 = =C2=A0 Medium (does not authenticate
>the complete packet)
>optimized authentication=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 Medium=C2=A0 High=C2=A0 =C2=A0 =C2=A0 =C2=A0(authenticates
>entire =C2=B3state change=C2=B2 packets)
>full authentication=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0High=C2=A0 =C2=A0 =C2=A0 =C2=A0High >(authenticates all packets)
>
>>
>> -- Jeff
>>
>>> On Jan 3, 2017, at 4:37 PM, internet-drafts@ietf.org wrote:
>>>
>>>
>>> A new version of I-D, draft-ietf-bfd-optimizing-authentic= ation-02.txt
>>> has been successfully submitted by Mahesh Jethanandani and pos= ted to
>>>the
>>> IETF repository.
>>>
>>> Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0dr= aft-ietf-bfd-optimizing-authentication
>>> Revision:=C2=A0 =C2=A002
>>> Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Optimiz= ing BFD Authentication
>>> Document date:=C2=A0 =C2=A0 =C2=A0 2017-01-05
>>> Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd
>>> Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 8
>>> URL:
>>>https://www.ietf= .org/internet-drafts/draft-ietf-bfd-optimizing-authentic
>>>ation-02.txt
>>> Status:
>>>https://datatrac= ker.ietf.org/doc/draft-ietf-bfd-optimizing-authenticatio
>>>n/
>>> Htmlized:
>>>https://tools.iet= f.org/html/draft-ietf-bfd-optimizing-authentication-02
>>> Diff:
>>>https://www.ie= tf.org/rfcdiff?url2=3Ddraft-ietf-bfd-optimizing-authenticati<= br> >>>on-02
>>>
>>> Abstract:
>>>=C2=A0 This document describes an optimization to BFD Authentic= ation as
>>>=C2=A0 described in Section 6.7 of BFD [RFC5880].
>>>
>>>
>>>
>>>
>>>
>>> Please note that it may take a couple of minutes from the time= of
>>>submission
>>> until the htmlized version and diff are available at tools.ietf.= org.
>>>
>>> The IETF Secretariat
>>
>


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[216.80.61.6]) by smtp.gmail.com with ESMTPSA id f63sm1490914ita.26.2017.03.25.19.38.34 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 25 Mar 2017 19:38:34 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt References: <148349024330.27920.12965506868600849117.idtracker@ietfa.amsl.com> <20170322193508.GT7253@pfrc.org> From: Mahesh Jethanandani Mime-Version: 1.0 (1.0) In-Reply-To: Message-Id: Date: Sat, 25 Mar 2017 09:10:35 -0700 Cc: Jeffrey Haas , "rtg-bfd@ietf. org" To: "Reshad Rahman (rrahman)" X-Mailer: iPad Mail (13G36) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Mar 2017 02:38:39 -0000 > On Mar 24, 2017, at 1:33 PM, Reshad Rahman (rrahman) w= rote: >=20 > Hi Mahesh, >=20 > Couple of questions/comments: >=20 > 1) I thought the secure sequence number was needed for the NULL Auth TLV > in the optimizing-authentication draft (to make NULL Auth TLV more secure > as per comments from security folks). I guess it could be used with full > authentication also. So I don=C2=B9t understand how secure sequence number= can > be used =C2=B3standalone=C2=B2 as seems to be implied by your cost/benefit= table > below. Sequence number obfuscation is not a replacement for optimized or full authe= ntication. On a spectrum from no authentication to full authentication, I vi= ew obfuscation of sequence numbers, deployed by itself, somewhere in the mid= dle to prevent a MITM attack. It does not prevent the packet from being modi= fied, but the session cannot be taken over by MITM, therefore the medium ben= efit. It's true benefit, however, comes from it being used in optimized authentica= tion. I do not see a particular advantage when full authentication is done. > 2) Section 2 mentions =C2=B3If the two ends have not previously negotiated= > which frames they will transmit or receive with authentication enabled, > then the BFD session will fail to come up, because at least one end will > expect every frame to be authenticated.=C2=B2 How is this negotiation done= ? Or > is this done via configuration aka outside the scope of this document? That is correct. Mahesh Jethanandani mjethanandani@gmail.com >=20 >=20 > Regards, > Reshad. >=20 > On 2017-03-22, 9:57 PM, "Rtg-bfd on behalf of Mahesh Jethanandani" > wrote: >=20 >>=20 >>> On Mar 22, 2017, at 12:35 PM, Jeffrey Haas wrote: >>>=20 >>> This update is scheduled to be discussed at the upcoming session at >>> IETF-98 >>> in Chicago. =20 >>>=20 >>> The likely discussion is whether the new draft from Sonal should be >>> specifically tied to the advancement of the optimization draft. Our >>> prior >>> discussion with Alan had suggested some concern about the sequence >>> number >>> issues when we're using NULL authentication. >>>=20 >>> I suspect some good discussion will happen on this topic at the upcoming= >>> session and encourage the members of the Working Group to read both >>> drafts >>> in preparation. >>=20 >> Yes, it would be helpful to read both the drafts in preparation for the >> discussion. >>=20 >> Optimized authentication is not a substitute for sequence number >> obfuscation draft, and vice-versa. They offer different levels of >> cost/benefit, where >>=20 >> Draft Cost Benefit >> =3D=3D=3D=3D =3D=3D=3D=3D = =3D=3D=3D=3D=3D=3D >> sequence number obfuscation Low Medium (does not authenticate >> the complete packet) >> optimized authentication Medium High (authenticates >> entire =C2=B3state change=C2=B2 packets) >> full authentication High High >> (authenticates all packets) >>=20 >>>=20 >>> -- Jeff >>>=20 >>>> On Jan 3, 2017, at 4:37 PM, internet-drafts@ietf.org wrote: >>>>=20 >>>>=20 >>>> A new version of I-D, draft-ietf-bfd-optimizing-authentication-02.txt >>>> has been successfully submitted by Mahesh Jethanandani and posted to >>>> the >>>> IETF repository. >>>>=20 >>>> Name: draft-ietf-bfd-optimizing-authentication >>>> Revision: 02 >>>> Title: Optimizing BFD Authentication >>>> Document date: 2017-01-05 >>>> Group: bfd >>>> Pages: 8 >>>> URL: =20 >>>> https://www.ietf.org/internet-drafts/draft-ietf-bfd-optimizing-authenti= c >>>> ation-02.txt >>>> Status: =20 >>>> https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authenticati= o >>>> n/ >>>> Htmlized: =20 >>>> https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-02= >>>> Diff: =20 >>>> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-optimizing-authentic= ati >>>> on-02 >>>>=20 >>>> Abstract: >>>> This document describes an optimization to BFD Authentication as >>>> described in Section 6.7 of BFD [RFC5880]. >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>>=20 >>>> Please note that it may take a couple of minutes from the time of >>>> submission >>>> until the htmlized version and diff are available at tools.ietf.org. >>>>=20 >>>> The IETF Secretariat >=20 From nobody Sun Mar 26 08:51:42 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 826241294AA for ; Sun, 26 Mar 2017 08:51:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO 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ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Mar 2017 15:51:37 +0000 Received: from XCH-ALN-003.cisco.com (xch-aln-003.cisco.com [173.36.7.13]) by rcdn-core-7.cisco.com (8.14.5/8.14.5) with ESMTP id v2QFpbMq017372 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=FAIL); Sun, 26 Mar 2017 15:51:37 GMT Received: from xch-rcd-005.cisco.com (173.37.102.15) by XCH-ALN-003.cisco.com (173.36.7.13) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Sun, 26 Mar 2017 10:51:36 -0500 Received: from xch-rcd-005.cisco.com ([173.37.102.15]) by XCH-RCD-005.cisco.com ([173.37.102.15]) with mapi id 15.00.1210.000; Sun, 26 Mar 2017 10:51:36 -0500 From: "Reshad Rahman (rrahman)" To: Mahesh Jethanandani CC: "rtg-bfd@ietf. org" Subject: Re: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt Thread-Topic: New Version Notification for draft-ietf-bfd-optimizing-authentication-02.txt Thread-Index: AQHSZiLAlo/tJTTLxUS5nmkdrVBMBaEn33GAgHou7gCAAGrigIAChyAAgAGL1oCAAUoEgA== Date: Sun, 26 Mar 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[31.133.144.227]) by smtp.gmail.com with ESMTPSA id m100sm5123033iod.14.2017.03.26.21.33.35 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 26 Mar 2017 21:33:35 -0700 (PDT) References: <148918117961.2935.12236490144244779567@ietfa.amsl.com> <20170324161404.GQ27015@pfrc.org> In-Reply-To: Mime-Version: 1.0 (1.0) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Message-Id: <1F5B0759-18FB-4830-81AD-29EDE2311CF6@gmail.com> Cc: Jeffrey Haas , "rtg-bfd@ietf.org" X-Mailer: iPad Mail (13G36) From: Mahesh Jethanandani Subject: Re: I-D Action: draft-ietf-bfd-yang-05.txt Date: Sun, 26 Mar 2017 23:33:34 -0500 To: "Reshad Rahman (rrahman)" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Mar 2017 04:33:41 -0000 Jeff,=20 Will echo Reshad's comment on the review. You should join the YANG doctors := -) More inline > On Mar 24, 2017, at 7:05 PM, Reshad Rahman (rrahman) w= rote: >=20 > Thanks Jeff for review + detailed comments, please see inline. >=20 > Co-authors, feel free to chime in. We=C2=B9ll meet to discuss in Chicago. >=20 >=20 >> On 2017-03-24, 12:14 PM, "Jeffrey Haas" wrote: >>=20 >> Authors, >>=20 >> Thanks for continued work on the yang module. It does appear it's >> approaching a good level of maturity! >>=20 >> I have a few comments from my recent read-through. I'd like to encourage= >> other members of the Working Group to review the module. I'd also like t= o >> encourage the authors to reach out to other protocol groups to check the >> suitability of the module for interaction with their protocols. >>=20 >> Some stream of thought comments: >> - TTL seems to be only a property of multi-hop sessions. How do you >> configure GTSM for single-hop sessions? >=20 > TTL must be 255 as per section 5 of RFC5881? >=20 >> - In single-hop, sessions are operationally keyed on "interface". >> However, >> there's also a "out-interface" node. How are they intended to be >> different? >=20 > This is for the case where =C2=B3interface=C2=B2 is a virtual interfa= ce, > =C2=B3out-interface=C2=B2 would indicate the physical interface. Thinking m= ore about > this, we should consider taking it out of the base model, vendors who want= > to support this can do augment. Agree that this should be an augmentation.=20 >=20 >> - state-change-reason in notification is a string type. While this is >> probably the fastest path to getting some code written, it's also the >> least machine usable mechanism. Has there been any discussion among the >> authors on how that might otherwise be addressed? >=20 > You=C2=B9re the first one to bring it up :-) So you=C2=B9d like us to= e.g. look > into defining an identity for this? >=20 >> - time-in-previous-state is oddly a string. Why not a time of some sort?= >=20 > I agree. >=20 >> - Future-proofing observation: An mpls-fec is not required to be an IP >> address, although that is pretty much its only major manifestation at >> the >> moment. This may cause weirdness down the road. >=20 > So are you suggesting we use a choice too cater for this? >=20 >> - mpls-fec is of type ip-address. FECs are typicall prefixes. >=20 > Ack. >=20 >> - bfd-diagnostic is missing code point 9. (See IANA issues.) >=20 > Ack. >=20 >> - Suggest adding the range restriction 0..31 to the description for >> bfd-diagnostic. >=20 > Ack. >=20 >> - Naming elements such as nbor, conc, etc. are rather unnecessarily >> truncated. While I realize that yang is somewhat human readable, it's >> mostly for machine interaction. Reasonably expanded names make a module >> easier to read, especially to English as a second language parties. >> This, >> however, needs to be balanced against things like "admin" which is >> already >> present in other BFD documents. >=20 > Ack. >=20 >> - In the bfd-auth-replay-protection description, please include citations= >> to >> the specific section of RFC 5880. >=20 > Ack. >=20 >> - The bfd-all-session grouping includes source-port and dest-port. This >> may >> not be relevant to all transports of BFD. What discussion have you >> given >> to restricting this, if any? >=20 > Good point. You=C2=B9re referring to encaps such as ACH I assume? >=20 >> - rx-ttl's description is a bit confusing to read. I think you are tryin= g >> to suggest that the received TTL should be <=3D this value to be >> acceptable? >=20 > >=3D from what recall. We=C2=B9ll discuss this amongst authors. >=20 >> - potential nit on "ttl"; ipv6 calls this hop-count. Any discussion on >> the >> naming of this type among the authors? >=20 > None but we will. >=20 >>=20 >>=20 >> Features: >> Echo and demand mode are not pervasively implemented for BFD. (I've not >> actually heard of an implementation of demand mode.) I suspect these >> elements should be covered by if-feature? While I realize the elements >> are >> optionally usable in the configuration leaves, the lack of a feature migh= t >> lead a netconf implementation with the thought that they can use this >> feature. What has been the author discussion on this point? >=20 > We have had some discussions on this. I agree that we should add > if-feature. Authors will discuss. Agree. >=20 >>=20 >> IANA management of some module components: >> Several elements in this draft are things that will regularly need to be >> maintained. Examples include: >> - bfd-path-type >> - bfd-auth-replay-protection >> - bfd-diagnostic >>=20 >> I suspect we wish to place these components in a module/modules that are >> IANA maintained. I'm a bit behind in current yang practices, but I >> suspect >> we have something like this defined now. It unfortunately has the >> headache >> that it impacts name-spacing issues for the consuming modules. >=20 > Hadn=C2=B9t thought of that. I suspect BFD isn=C2=B9t the first modul= e to need > this=C5=A0. While we need to put the module name in IANA list of modules for namespace r= easons, I am not sure of individual elements. Are these values not already m= aintained by IANA? >=20 >>=20 >> Timing hints: >> Has any discussion been given to an operational module that might suggest= >> what timer values are acceptable to an implementation? Note: I'm not >> suggesting this as part of the core module, but it's a common "what timer= s >> does your implementation support" question that typically happens. >=20 > No discussions on this. We=C2=B9ll have to discuss. What is tricky wi= th > this is that some implementations support different timer ranges based on > =C2=B3path-type=C2=B2. E.g. 5 ms mayb be supported for single-hop but for m= ulti-hop > the minimum could be 150 ms. I seem to remember an effort to define the most commonly used timeout values= . If so, we could define them in the model, leaving individual implementati= ons to add their own preferred values.=20 Mahesh Jethanandani mjethanandani@gmail.com >=20 > Regards, > Reshad. >=20 >>=20 >>=20 >>> On Fri, Mar 10, 2017 at 09:29:45PM +0000, Reshad Rahman (rrahman) wrote:= >>> Main changes from rev 04 are: >>> - Removed augment of network-instance, added reference to schema-mount >>> - bfd is not top-level anymore, augments control-plane-protocol from >>> RFC8022 >>> - Addeds section on Interaction with other YANG modules >>>=20 >>>=20 >>>=20 >>> Regards, >>> BFD YANG authors. >>>=20 >>> On 2017-03-10, 4:26 PM, "Rtg-bfd on behalf of internet-drafts@ietf.org" >>> wrote: >>>=20 >>>>=20 >>>> A New Internet-Draft is available from the on-line Internet-Drafts >>>> directories. >>>> This draft is a work item of the Bidirectional Forwarding Detection of >>>> the IETF. >>>>=20 >>>> Title : Yang Data Model for Bidirectional Forwarding >>>> Detection (BFD) >>>> Authors : Reshad Rahman >>>> Lianshu Zheng >>>> Santosh Pallagatti >>>> Mahesh Jethanandani >>>> Greg Mirsky >>>> Filename : draft-ietf-bfd-yang-05.txt >>>> Pages : 53 >>>> Date : 2017-03-10 >>>>=20 >>>> Abstract: >>>> This document defines a YANG data model that can be used to >>> configure >>>> and manage Bidirectional Forwarding Detection (BFD). >>>>=20 >>>>=20 >>>>=20 >>>> The IETF datatracker status page for this draft is: >>>> https://datatracker.ietf.org/doc/draft-ietf-bfd-yang/ >>>>=20 >>>> There's also a htmlized version available at: >>>> https://tools.ietf.org/html/draft-ietf-bfd-yang-05 >>>>=20 >>>> A diff from the previous version is available at: >>>> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-yang-05 >>>>=20 >>>>=20 >>>> Please note that it may take a couple of minutes from the time of >>>> submission >>>> until the htmlized version and diff are available at tools.ietf.org. >>>>=20 >>>> Internet-Drafts are also available by anonymous FTP at: >>>> ftp://ftp.ietf.org/internet-drafts/ >=20 From nobody Mon Mar 27 08:41:28 2017 Return-Path: X-Original-To: rtg-bfd@ietfa.amsl.com Delivered-To: rtg-bfd@ietfa.amsl.com Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D9BEB1294D3; 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Sun, 26 Mar 2017 10:47:28 -0700 (PDT) MIME-Version: 1.0 Received: by 10.157.21.21 with HTTP; Sun, 26 Mar 2017 10:47:27 -0700 (PDT) In-Reply-To: <20170324154640.GO27015@pfrc.org> References: <20170324154640.GO27015@pfrc.org> From: Greg Mirsky Date: Sun, 26 Mar 2017 12:47:27 -0500 Message-ID: Subject: Re: Correcting BFD Echo model To: Jeffrey Haas Cc: "Reshad Rahman (rrahman)" , "rtg-bfd@ietf. org" , "draft-ietf-bfd-yang@ietf.org" Content-Type: multipart/mixed; boundary=001a113cbdd8fcb4df054ba5d1dc Archived-At: X-Mailman-Approved-At: Mon, 27 Mar 2017 08:41:27 -0700 X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Mar 2017 17:47:31 -0000 --001a113cbdd8fcb4df054ba5d1dc Content-Type: multipart/alternative; boundary=001a113cbdd8fcb4da054ba5d1da --001a113cbdd8fcb4da054ba5d1da Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Jeff, et. al, attached are two slides to remind how RFC 5880 describes BFD Echo and its use, per my understanding. As well as outline of two models to present Echo BFD in data model. Appreciate your comments, suggestions. Will be glad to update the slides or feel free to hop on and edit them directly. Regards, Greg On Fri, Mar 24, 2017 at 10:46 AM, Jeffrey Haas wrote: > [continuing the top-posting heresy to preserve context] > > Greg, > > Our schedule is relatively open right now, and this matter is esoteric > enough that it probably warrants a slide for the majority of the Working > Group to follow this issue. Would you prepare a slide or two to use as a > discussion point? > > I'll also use this opportunity to point out that in S-BFD scenarios, we > have > somewhat similar ambiguities since it's an on-demand service. > > -- Jeff > > On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote: > > Hi Reshad, > > thank you for providing the context to BFD Echo TX. Indeed, I'm familia= r > > with implementations that use BFD Echo as Echo request/reply and thus T= x > > would be in RPC, not in configuration. I think that it would be good to > > discuss this in Chicago unless we hear comments from others on the list= . > > > > Regards, > > Greg > > > > On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) < > rrahman@cisco.com> > > wrote: > > > > > Hi Greg, > > > > > > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval in RPC > > > because all ping operations are done via RPC. I do not consider BFD > echo > > > to be =E2=80=9Con demand=E2=80=9D like LSP Ping (caveat: this is poss= ibly due to the > BFD > > > configuration/implementation I am most familiar with). > > --001a113cbdd8fcb4da054ba5d1da Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jeff, et. al,
attached are two slides to remind how= RFC 5880 describes BFD Echo and its use, per my understanding. As well as = outline of two models to present Echo BFD in data model. Appreciate your co= mments, suggestions. Will be glad to update the slides or feel free to hop = on and edit them directly.

Regards,
Greg=



On Fri, Mar 24, 2017 at 10:46 AM, Jeffrey Haas <jhaa= s@pfrc.org> wrote:
[continu= ing the top-posting heresy to preserve context]

Greg,

Our schedule is relatively open right now, and this matter is esoteric
enough that it probably warrants a slide for the majority of the Working Group to follow this issue.=C2=A0 Would you prepare a slide or two to use a= s a
discussion point?

I'll also use this opportunity to point out that in S-BFD scenarios, we= have
somewhat similar ambiguities since it's an on-demand service.

-- Jeff

On Mon, Feb 27, 2017 at 07:31:01AM -0800, Greg Mirsky wrote:
> Hi Reshad,
> thank you for providing= the context to BFD Echo TX. Indeed, I'm familiar
> with implementations that use BFD Echo as Echo request/reply and thus = Tx
> would be in RPC, not in configuration. I think that it would be good t= o
> discuss this in Chicago unless we hear comments from others on the lis= t.
>
> Regards,
> Greg
>
> On Mon, Feb 27, 2017 at 5:56 AM, Reshad Rahman (rrahman) <rrahman@cisco.com>
> wrote:
>
> > Hi Greg,
> >
> > draft-zheng-mpls-ls-ping-yang-cfg defines transmit interval = in RPC
> > because all ping operations are done via RPC.=C2=A0 I do not cons= ider BFD echo
> > to be =E2=80=9Con demand=E2=80=9D like LSP Ping (caveat: this is = possibly due to the BFD
> > configuration/implementation I am most familiar with).


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