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([2601:647:5600:5020:9462:384e:168f:ba74]) by smtp.gmail.com with ESMTPSA id a68sm6647601pje.35.2020.07.01.21.13.38 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Jul 2020 21:13:38 -0700 (PDT) From: Mahesh Jethanandani Message-Id: <8C54F0A2-0D11-4C50-B94F-19E6381365AE@gmail.com> Content-Type: multipart/alternative; boundary="Apple-Mail=_1CCD64BD-E2E8-4BD3-81A5-326922D97FB8" Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.5\)) Subject: Re: Shepherd writeup for draft-ietf-bfd-optimizing-authentication Date: Wed, 1 Jul 2020 21:13:37 -0700 In-Reply-To: <86B2BDA3-B8BC-4ABF-A073-30844E7254FD@cisco.com> Cc: "rtg-bfd@ietf. org" , "draft-ietf-bfd-optimizing-authentication@ietf.org" To: Reshad Rehman References: <86B2BDA3-B8BC-4ABF-A073-30844E7254FD@cisco.com> X-Mailer: Apple Mail (2.3445.9.5) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 02 Jul 2020 04:13:43 -0000 --Apple-Mail=_1CCD64BD-E2E8-4BD3-81A5-326922D97FB8 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Hi Reshad, Happy Canada day! Thanks first of all for the shepherd writeup. Please see my = comments/questions inline. @Ashesh, please comment on the change to the table. > On Jun 14, 2020, at 11:50 AM, Reshad Rahman (rrahman) = wrote: >=20 > Authors, WG, > =20 > The writeup is available at = https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/= = > =20 > For convenience I=E2=80=99ve copied the comments on the document = below. > =20 > Regards, > Reshad. > =20 > General: > Updates RFC5880 missing from title page Hmm. How does one add the =E2=80=9CUpdates=E2=80=9D tag? > Replace BFD frames by BFD packets or BFD control packets. Don=E2=80=99t = use frames since RFC5880 uses packets. Done. > Use of term Null-authentication TLV. RFC5880 uses authentication = section, doesn=E2=80=99t mention auth TLV. Ok. Have changed all references of =E2=80=9CNULL Auth TLV=E2=80=9D to = =E2=80=9CNULL Auth Type=E2=80=9D. > =20 > Abstract: > Mention that this document updates RFC5880. Done. > =20 > Requirements Language > Please put this is a separate (sub)section later, e.g. after = introduction. Done. > =20 > Introduction > First paragraph: s/is computationally intensive process/is a = computationally intensive process/ Done. > Split first sentence into 2, e.g. > Authenticating every BFD [RFC5880] packet with a Simple Password, = or > with a MD5 Message-Digest Algorithm [RFC1321], or Secure Hash > Algorithm (SHA-1) algorithms is a computationally intensive = process. > This makes it difficult, if not impossible, to authenticate every = packet, > particularly at faster rates. Done. > =20 > 2nd paragraph: =E2=80=9C=E2=80=A6 only BFD frames that signal a state = change in BFD be authenticated.=E2=80=9D State change is not 100% = correct since P/F/D bit changes aren=E2=80=99t state changes (as = mentioned in more detail below in section 2 comments). What about this = instead: =E2=80=9CState change, a demand mode change (to D bit) or a = poll sequence change (P or F bit change) in a BFD packet are categorized = as a significant BFD change. This document proposes that all BFD control = packets which signal a significant BFD change MUST be authenticated if = the session=E2=80=99s bfd.AuthType is non-zero. Other BFD control = packets MAY be transmitted and received without the A bit set.=E2=80=9D = If you do use =E2=80=9Csignificant BFD change=E2=80=9D, add it to = terminology section. Done. > s/non-state change frame/BFD control packets without state or D/F/P = bit change/, e.g. > =E2=80=9CTo detect a Man In the Middle (MITM) attack, it is also = proposed that BFD control packets without a significant change be = authenticated occasionally. The interval of these control packets=E2=80=A6= =E2=80=9D Done. > =20 > Section 2 > POLL and DEMAND are NOT strictly states. POLL refers to =E2=80=9CPoll = sequence=E2=80=9D as specified in section 6.5 of RFC5880. DEMAND refers = to =E2=80=9CDemand mode=E2=80=9D as specified in section 6.6 of RFC5880. = In the table, the POLL entry refers to polling sequence enabled and in = any BFD state. Likewise, the DEMAND entry refers to Demand mode. This = means that a session in UP state, in demand mode and polling sequence = enabled will match 3 entries in that table. It=E2=80=99s a bit = confusing. Here=E2=80=99s what I suggest instead: > Take POLL out of the table. Add a paragraph mentioning that if P or F = bit changes value, the packet MUST be authenticated > Take DEMAND out of the table. Add a paragraph mentioning that if D bit = changes value, the packet MUST be authenticated Have made the change as follows. I am hoping Ashesh can comment on it. The significant changes for which authentication is being suggested include: Read : On state change from to Auth : Authenticate frame NULL : No Authentication. Use NULL AUTH Type. n/a : Invalid state transition. Select : Most packets NULL AUTH. Selective (periodic) packets authenticated. +--------+-----------+---------+---------+ | | DOWN | INIT | UP | +--------+--------+--------+--------+ | DOWN | NULL | Auth | Auth | +--------+--------+--------+--------+ | INIT | Auth | NULL | n/a | +--------+--------+--------+--------+ | UP | Auth | Auth | Select | +--------+--------+--------+--------+ Optimized Authentication Map If P or F bit changes value, the packet MUST be authenticated. If the D bit changes value, the packet MUST be authenticated. > =20 > Another comment on the table. The text says it should be read as state = change from column to row. Column INIT to row UP is n/a whereas column = UP to row INIT is Auth. INIT to UP is a valid transition, UP to INIT is = not (has to go through DOWN first). So I think those entries should be = reversed in the table. Done. > =20 > Last paragraph: CC frames is not defined in BFD, use =E2=80=9Ccontrol = packets=E2=80=9D instead? Done. > =20 > Section 3 > Sequence number mentions =E2=80=9Cas defined in [RFC5880]=E2=80=9D. = Suggest mentioning bfd.XmitAuthSeq Done. > =20 > Security Considerations. > I believe this needs to be beefed up: > Use of sequence number for non-authenticated frames. Secure sequence = numbers even better. > Mention (again) that non-authenticated BFD packets which have a = significant change (state, D/F/P) are dropped. So if someone injects a = non-authenticated packet with Down state to take down the session, that = won=E2=80=99t work. The Security Considerations section now reads as follows: The approach described in this document enhances the ability to authentication a BFD session by taking away the onerous requirement that every frame be authenticated. By authenticating packets that affect the state of the session, the security of the BFD session is maintained. In this mode, packets that are a significant change but are not authenticated, are dropped by the system. Therefore, a malicious user that tries to inject a non-authenticated packet, e.g. with a Down state to take a session down will fail. That combined with the proposal of using sequence number defined in Secure BFD Sequence Numbers [I-D.ietf-bfd-secure-sequence-numbers] further enhances the security of BFD sessions. > =20 > Section 6.2 > RFC5880 should be a normative reference. Done. Mahesh Jethanandani mjethanandani@gmail.com --Apple-Mail=_1CCD64BD-E2E8-4BD3-81A5-326922D97FB8 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 Hi = Reshad,

Happy Canada = day!

Thanks = first of all for the shepherd writeup. Please see my comments/questions = inline.

@Ashesh,= please comment on the change to the table.

On Jun = 14, 2020, at 11:50 AM, Reshad Rahman (rrahman) <rrahman@cisco.com> = wrote:

Authors, WG,
 
 
For convenience = I=E2=80=99ve copied the comments on the document below.
 
Regards,
Reshad.
 
General:
  • Updates RFC5880 missing from = title page

Hmm. How does one add the =E2=80=9CUpdates=E2=80=9D = tag?

  • Replace BFD frames by BFD packets or BFD control packets. = Don=E2=80=99t use frames since RFC5880 uses = packets.

Done.

  • Use of term Null-authentication TLV. RFC5880 = uses authentication section, doesn=E2=80=99t mention auth = TLV.

Ok. = Have changed all references of =E2=80=9CNULL Auth TLV=E2=80=9D to = =E2=80=9CNULL Auth Type=E2=80=9D.

 
Abstract:
Mention that this = document updates RFC5880.

Done.

 
Requirements Language
Please put this is a = separate (sub)section later, e.g. after = introduction.

Done.

 
Introduction
First paragraph: s/is computationally intensive = process/is a computationally intensive = process/

Done.

Split first sentence into 2, e.g.
   Authenticating every = BFD [RFC5880] packet with a Simple Password, or
   with a MD5 = Message-Digest Algorithm [RFC1321], or Secure Hash
   Algorithm (SHA-1) = algorithms is a computationally intensive process.
   This makes it = difficult, if not impossible, to authenticate every packet,
   particularly at = faster rates.

Done.

 
2nd paragraph: =E2=80=9C=E2=80=A6= only BFD frames that signal a state change in BFD be authenticated.=E2=80= =9D State change is not 100% correct since P/F/D bit changes aren=E2=80=99= t state changes (as mentioned in more detail below in section 2 = comments). What about this instead: =E2=80=9CState change, a demand mode = change (to D bit) or a poll sequence change (P or F bit change) in a BFD = packet are categorized as a significant BFD change. This document = proposes that all BFD control packets which signal a significant BFD = change MUST be authenticated if the session=E2=80=99s bfd.AuthType is = non-zero. Other BFD control packets MAY be transmitted and received = without the A bit set.=E2=80=9D If you do use =E2=80=9Csignificant BFD = change=E2=80=9D, add it to terminology = section.

Done.

s/non-state change frame/BFD control packets = without state or D/F/P bit change/, e.g.
=E2=80=9CTo detect a Man In the Middle (MITM) = attack, it is also proposed that BFD control packets without a = significant change be authenticated occasionally.  The interval of = these control packets=E2=80=A6=E2=80=9D

Done.

 
Section 2
POLL and DEMAND are NOT strictly states. POLL = refers to =E2=80=9CPoll sequence=E2=80=9D as specified in section 6.5 of = RFC5880. DEMAND refers to =E2=80=9CDemand mode=E2=80=9D as specified in = section 6.6 of RFC5880. In the table, the POLL entry refers to polling = sequence enabled and in any BFD state. Likewise, the DEMAND entry refers = to Demand mode. This means that a session in UP state, in demand mode = and polling sequence enabled will match 3 entries in that table. It=E2=80=99= s a bit confusing. Here=E2=80=99s what I suggest instead:
  1. Take POLL out of = the table. Add a paragraph mentioning that if P or F bit changes value, = the packet MUST be authenticated
  2. Take DEMAND out of the table. Add a paragraph = mentioning that if D bit changes value, the packet MUST be = authenticated

Have made the change as follows. I am hoping Ashesh can = comment on it.

The significant = changes for which authentication is being suggested
  =  include:

      =     Read   : On state change from <column> to = <row>
          Auth   : = Authenticate frame
          NULL =   : No Authentication. Use NULL AUTH Type.
    =       n/a    : Invalid state = transition.
          Select : Most = packets NULL AUTH. Selective (periodic)
      =              packets = authenticated.
        =  +--------+-----------+---------+---------+
    =      |            | DOWN =   | INIT   | UP     |
      =    +--------+--------+--------+--------+
  =        | DOWN   |  NULL  |  Auth =  |  Auth  |
        =  +--------+--------+--------+--------+
    =      | INIT   |  Auth  |  NULL =  |  n/a   |
        =  +--------+--------+--------+--------+
    =      | UP     |  Auth  |  Auth =  | Select |
        =  +--------+--------+--------+--------+

              =          Optimized Authentication = Map

   If P or F bit = changes value, the packet MUST be authenticated. =  If
   the D bit changes value, the packet MUST = be authenticated.

 
Another comment on = the table. The text says it should be read as state change from column = to row. Column INIT to row UP is n/a whereas column UP to row INIT is = Auth. INIT to UP is a valid transition, UP to INIT is not (has to go = through DOWN first). So I think those entries should be reversed in the = table.

Done.

 
Last paragraph: CC frames is not defined in BFD, = use =E2=80=9Ccontrol packets=E2=80=9D = instead?

Done.

 
Section 3
Sequence number mentions =E2=80=9Cas defined in = [RFC5880]=E2=80=9D. Suggest mentioning = bfd.XmitAuthSeq

Done.

 
Security Considerations.
I believe this needs = to be beefed up:
  1. Use of sequence number for non-authenticated = frames. Secure sequence numbers even better.
    2. Mention (again) that non-authenticated BFD = packets which have a significant change (state, D/F/P) are dropped. So = if someone injects a non-authenticated packet with Down state to take = down the session, that won=E2=80=99t = work.

The = Security Considerations section now reads as follows:

  The approach described in this = document enhances the ability to
   authentication a = BFD session by taking away the onerous requirement
  =  that every frame be authenticated.  By authenticating packets = that
   affect the state of the session, the = security of the BFD session is
   maintained. =  In this mode, packets that are a significant change = but
   are not authenticated, are dropped by the = system.  Therefore, a
   malicious user that = tries to inject a non-authenticated packet, e.g.
  =  with a Down state to take a session down will fail.  That = combined
   with the proposal of using sequence = number defined in Secure BFD
   Sequence Numbers = [I-D.ietf-bfd-secure-sequence-numbers] further
  =  enhances the security of BFD sessions.



 
Section 6.2
RFC5880 should be a = normative reference.

Done.

Mahesh Jethanandani
mjethanandani@gmail.com



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nobody Thu Jul 2 17:21:07 2020 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 40DA73A0937; Thu, 2 Jul 2020 17:20:29 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: "\"IETF Secretariat\"" To: , Cc: martin.vigoureux@nokia.com, rtg-bfd@ietf.org Subject: bfd - Requested session has been scheduled for IETF 108 X-Test-IDTracker: no X-IETF-IDTracker: 7.7.0 Auto-Submitted: auto-generated Precedence: bulk Message-ID: <159373562924.30173.10930048106584220956@ietfa.amsl.com> Date: Thu, 02 Jul 2020 17:20:29 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Jul 2020 00:20:31 -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 (0:50 requested) Thursday, 30 July 2020, Session II 1300-1350 Room Name: Room 5 size: 5 --------------------------------------------- iCalendar: https://datatracker.ietf.org/meeting/108/sessions/bfd.ics Request Information: --------------------------------------------------------- Working Group Name: Bidirectional Forwarding Detection Area Name: Routing Area Session Requester: Reshad Rahman Number of Sessions: 1 Length of Session(s): 50 Minutes Number of Attendees: 50 Conflicts to Avoid: Chair Conflict: idr grow rtgwg bess lisp netmod netconf Technology Overlap: bier spring mpls teas pals sfc Key Participant Conflict: ccamp People who must be present: Jeffrey Haas Reshad Rahman Martin Vigoureux Resources Requested: Special Requests: --------------------------------------------------------- From nobody Sat Jul 4 12:18:04 2020 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 2D6B73A0EC9; Sat, 4 Jul 2020 12:18:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.097 X-Spam-Level: X-Spam-Status: No, score=-1.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FREEMAIL_REPLY=1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=no 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 lw3ky56-AMWT; Sat, 4 Jul 2020 12:18:00 -0700 (PDT) Received: from mail-lf1-x12c.google.com (mail-lf1-x12c.google.com [IPv6:2a00:1450:4864:20::12c]) (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 74D913A0EC7; Sat, 4 Jul 2020 12:17:59 -0700 (PDT) Received: by mail-lf1-x12c.google.com with SMTP id g139so20334440lfd.10; Sat, 04 Jul 2020 12:17:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ogP6DN0bIcNyyZySXbAx4yh+sSTTMtMbfglj0p/3DyA=; b=DGJDt0X1puRBdCojhv3LsquCGV9LuCLjXAF+sHdJRTJCkJ+SualkwXjn8ndet85w1i euBJ3I4QkFM/8vInw6x+MDi4EJ165tZ0ft+R3BJsY+VJe/Vm2z1gnS8UT3Akd1StItKm 1i3NKxxW0ba50asI8iATt5FXz/9EbIdb2MUVY0Z83mYqQVUBvJ++i7B/2R1IegDx9760 mR6o1ad0poP6gVkaw/wR9HchTrbPzf+oNBPgwe1UOfe+T5Us4zZuepK1e34k4oyhRpU2 3Q5goLbdV8zqUV6LqkIZ4g7TIbbgXDp+EfuXRYuttGTq/4yv5cpTNePVAc3Mojd0Gkzc pcXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ogP6DN0bIcNyyZySXbAx4yh+sSTTMtMbfglj0p/3DyA=; b=fUP6oHAa/jlfLTmtlwfcCOKKCbxEZjzHqzfKW1lTYQdgIgxzgk/68kjEG6AADKZUOh EKhP7vCRxjunCETjd2X7svJaCaosbVyad67qMB+O3Alo/da+tF8p1SKFFa1VPAJB7xBc L8XVfsPOZOriIxjVBdSopXfwH16BnW8sgXcn6snzqM6W5lmaOShtgMpZk3XrVFhYyuDF y2oY9QoP0MwrpKX8jRQLgcLb29gXwxErIfDEFwIMOqasrbZKDP8K+28EU5jJv4cvq8G4 klcCtvZrITlV+mmQbAuDikOiL2bXbMU2nD42lbWIuUTEBT/nf++jiHK+O9XXEJ1YCH1F d0Sw== X-Gm-Message-State: AOAM533pRwVBORdy2VhgHLWMLJgAKRrFp5HnlLSqVxqAOPGjNRFNFLQ6 CJe4txoc+LcnIk/M3sBKQMocIokD1brT8ru0znE= X-Google-Smtp-Source: ABdhPJxLnaX1cbxAXdthhFF3KmkQnRX07P5T4PZ3IEgJjq0DJg1o8+Qt1PlrXaM/83Ky5KhY92GWT8qknPL1014XI+k= X-Received: by 2002:ac2:5691:: with SMTP id 17mr25575922lfr.209.1593890277374; Sat, 04 Jul 2020 12:17:57 -0700 (PDT) MIME-Version: 1.0 References: <86B2BDA3-B8BC-4ABF-A073-30844E7254FD@cisco.com> <8C54F0A2-0D11-4C50-B94F-19E6381365AE@gmail.com> In-Reply-To: From: Ashesh Mishra Date: Sat, 4 Jul 2020 12:17:46 -0700 Message-ID: Subject: Re: Shepherd writeup for draft-ietf-bfd-optimizing-authentication To: "Reshad Rahman (rrahman)" Cc: Mahesh Jethanandani , "rtg-bfd@ietf. org" , "draft-ietf-bfd-optimizing-authentication@ietf.org" Content-Type: multipart/alternative; boundary="000000000000cb3e1705a9a27f46" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 04 Jul 2020 19:18:02 -0000 --000000000000cb3e1705a9a27f46 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Mahesh, On the Section-2 state transitions - the confusion seems to be around the context of the "state". The section uses it to detect changes at the receiver - if the frame that is received is different from the one that was received previously, then should it (or should it not) be authenticated. In that sense, the receipt of P, F and D represent changes to the ongoing BFD session and should be authenticated. I agree with Reshad that poll and demand are not state changes in the BFD state-machine - but they change the state of the receiver logic (poll, for instance, can change the interval which can cause instability). Hope that clarifies the verbiage. Perhaps we can use a different term for it but I can't think of one :) -- Ash On Thu, Jul 2, 2020 at 12:02 PM Reshad Rahman (rrahman) wrote: > Hi Mahesh, > > > > Thanks for the update. I=E2=80=99ll re-review the updated document when = it=E2=80=99s > available. > > > > Inline > > > > *From: *Mahesh Jethanandani > *Date: *Thursday, July 2, 2020 at 12:13 AM > *To: *"Reshad Rahman (rrahman)" > *Cc: *"rtg-bfd@ietf.org" , " > draft-ietf-bfd-optimizing-authentication@ietf.org" < > draft-ietf-bfd-optimizing-authentication@ietf.org> > *Subject: *Re: Shepherd writeup for > draft-ietf-bfd-optimizing-authentication > > > > Hi Reshad, > > > > Happy Canada day! > > > > Thanks first of all for the shepherd writeup. Please see my > comments/questions inline. > > > > @Ashesh, please comment on the change to the table. > > > > On Jun 14, 2020, at 11:50 AM, Reshad Rahman (rrahman) > wrote: > > > > Authors, WG, > > > > The writeup is available at > https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication= / > > > > For convenience I=E2=80=99ve copied the comments on the document below. > > > > Regards, > > Reshad. > > > > General: > > - Updates RFC5880 missing from title page > > > > Hmm. How does one add the =E2=80=9CUpdates=E2=80=9D tag? > > > > > - > - Replace BFD frames by BFD packets or BFD control packets. Don=E2=80= =99t use > frames since RFC5880 uses packets. > > > > Done. > > > > > - > - Use of term Null-authentication TLV. RFC5880 uses authentication > section, doesn=E2=80=99t mention auth TLV. > > > > Ok. Have changed all references of =E2=80=9CNULL Auth TLV=E2=80=9D to =E2= =80=9CNULL Auth Type=E2=80=9D. > > > > > - > > > > Abstract: > > Mention that this document updates RFC5880. > > > > Done. > > > > > > Requirements Language > > Please put this is a separate (sub)section later, e.g. after introduction= . > > > > Done. > > > > > > Introduction > > First paragraph: s/is computationally intensive process/is a > computationally intensive process/ > > > > Done. > > > > Split first sentence into 2, e.g. > > Authenticating every BFD [RFC5880] packet with a Simple Password, or > > with a MD5 Message-Digest Algorithm [RFC1321], or Secure Hash > > Algorithm (SHA-1) algorithms is a computationally intensive process. > > This makes it difficult, if not impossible, to authenticate every > packet, > > particularly at faster rates. > > > > Done. > > > > > > 2nd paragraph: =E2=80=9C=E2=80=A6 only BFD frames that signal a state cha= nge in BFD be > authenticated.=E2=80=9D State change is not 100% correct since P/F/D bit = changes > aren=E2=80=99t state changes (as mentioned in more detail below in sectio= n 2 > comments). What about this instead: =E2=80=9CState change, a demand mode = change (to > D bit) or a poll sequence change (P or F bit change) in a BFD packet are > categorized as a significant BFD change. This document proposes that all > BFD control packets which signal a significant BFD change MUST be > authenticated if the session=E2=80=99s bfd.AuthType is non-zero. Other BF= D control > packets MAY be transmitted and received without the A bit set.=E2=80=9D I= f you do > use =E2=80=9Csignificant BFD change=E2=80=9D, add it to terminology secti= on. > > > > Done. > > > > s/non-state change frame/BFD control packets without state or D/F/P bit > change/, e.g. > > =E2=80=9CTo detect a Man In the Middle (MITM) attack, it is also proposed= that BFD > control packets without a significant change be authenticated occasionall= y. > The interval of these control packets=E2=80=A6=E2=80=9D > > > > Done. > > > > > > Section 2 > > POLL and DEMAND are NOT strictly states. POLL refers to =E2=80=9CPoll seq= uence=E2=80=9D as > specified in section 6.5 of RFC5880. DEMAND refers to =E2=80=9CDemand mod= e=E2=80=9D as > specified in section 6.6 of RFC5880. In the table, the POLL entry refers = to > polling sequence enabled and in any BFD state. Likewise, the DEMAND entry > refers to Demand mode. This means that a session in UP state, in demand > mode and polling sequence enabled will match 3 entries in that table. It= =E2=80=99s > a bit confusing. Here=E2=80=99s what I suggest instead: > > 1. Take POLL out of the table. Add a paragraph mentioning that if P or > F bit changes value, the packet MUST be authenticated > 2. Take DEMAND out of the table. Add a paragraph mentioning that if D > bit changes value, the packet MUST be authenticated > > > > Have made the change as follows. I am hoping Ashesh can comment on it. > > > > The significant changes for which authentication is being suggested > > include: > > > > Read : On state change from to > > Auth : Authenticate frame > > NULL : No Authentication. Use NULL AUTH Type. > > n/a : Invalid state transition. > > Select : Most packets NULL AUTH. Selective (periodic) > > packets authenticated. > > +--------+-----------+---------+---------+ > > | | DOWN | INIT | UP | > > +--------+--------+--------+--------+ > > | DOWN | NULL | Auth | Auth | > > +--------+--------+--------+--------+ > > | INIT | Auth | NULL | n/a | > > +--------+--------+--------+--------+ > > | UP | Auth | Auth | Select | > > +--------+--------+--------+--------+ > > > > Optimized Authentication Map > > > > If P or F bit changes value, the packet MUST be authenticated. If > > the D bit changes value, the packet MUST be authenticated. > > I=E2=80=99m good with this. I=E2=80=99m ok with doing this different= ly too, as long > as the crux of my concern is still addressed. > > > > > 1. > > > > Another comment on the table. The text says it should be read as state > change from column to row. Column INIT to row UP is n/a whereas column UP > to row INIT is Auth. INIT to UP is a valid transition, UP to INIT is not > (has to go through DOWN first). So I think those entries should be revers= ed > in the table. > > > > Done. > > > > > > Last paragraph: CC frames is not defined in BFD, use =E2=80=9Ccontrol pac= kets=E2=80=9D > instead? > > > > Done. > > > > > > Section 3 > > Sequence number mentions =E2=80=9Cas defined in [RFC5880]=E2=80=9D. Sugge= st mentioning > bfd.XmitAuthSeq > > > > Done. > > > > > > Security Considerations. > > I believe this needs to be beefed up: > > 1. Use of sequence number for non-authenticated frames. Secure > sequence numbers even better. > 2. Mention (again) that non-authenticated BFD packets which have a > significant change (state, D/F/P) are dropped. So if someone injects a > non-authenticated packet with Down state to take down the session, tha= t > won=E2=80=99t work. > > > > The Security Considerations section now reads as follows: > > > > The approach described in this document enhances the ability to > > authentication a BFD session by taking away the onerous requirement > > s/authentication a BFD/authenticate a BFD/ > > that every frame be authenticated. By authenticating packets that > > s/every frame/every BFD control packet/ > > affect the state of the session, the security of the BFD session is > > maintained. In this mode, packets that are a significant change but > > are not authenticated, are dropped by the system. Therefore, a > > malicious user that tries to inject a non-authenticated packet, e.g. > > with a Down state to take a session down will fail. That combined > > with the proposal of using sequence number defined in Secure BFD > > Sequence Numbers [I-D.ietf-bfd-secure-sequence-numbers] further > > enhances the security of BFD sessions. > > > > > > Regards, > > Reshad. > > > > > > > 1. > > > > Section 6.2 > > RFC5880 should be a normative reference. > > > > Done. > > > > Mahesh Jethanandani > > mjethanandani@gmail.com > > > > > > > > --000000000000cb3e1705a9a27f46 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Mahesh, On the Section-2 state transitions - the confus= ion seems to be around the context of the "state". The section us= es it to detect changes at the receiver - if the frame that is received is = different from the one that was received previously, then should it (or sho= uld it not) be authenticated. In that sense, the receipt=C2=A0of P, F and D= represent changes to the ongoing BFD session and should=C2=A0be authentica= ted. I agree with Reshad that poll and demand are not=C2=A0state changes in= the BFD state-machine - but they change the state of the receiver logic (p= oll, for instance, can change the interval which can cause instability). Ho= pe that clarifies the verbiage. Perhaps we can use a different term for it = but I can't think of one :)

--
Ash

On= Thu, Jul 2, 2020 at 12:02 PM Reshad Rahman (rrahman) <rrahman@cisco.com> wrote:

Hi Mahesh,=

=C2=A0

Thanks for the update.= =C2=A0 I=E2=80=99ll re-review the updated document when it=E2=80=99s availa= ble.

=C2=A0

Inline <RR>=

=C2=A0

From: = Mahesh Jethanandani &= lt;mjethananda= ni@gmail.com>
Date: Thursday, July 2, 2020 at 12:13 AM
To: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
Cc: "rtg-= bfd@ietf.org" <rtg-bfd@ietf.org>, "draft-ietf-bfd-optimizing= -authentication@ietf.org" <draft-ietf-bfd-optimizin= g-authentication@ietf.org>
Subject: Re: Shepherd writeup for draft-ietf-bfd-optimizing-authenti= cation

=C2=A0

Hi Reshad,

=C2=A0

Happy Canada day!

=C2=A0

Thanks first of all for the shepherd writeup. Please= see my comments/questions inline.

=C2=A0

@Ashesh, please comment on the change to the table.<= u>



  • =C2=A0
  • Replace BFD frames by B= FD packets or BFD control packets. Don=E2=80=99t use frames since RFC5880 u= ses packets.

=C2=A0

Done.



  • =C2=A0
  • Use of term Null-authen= tication TLV. RFC5880 uses authentication section, doesn=E2=80=99t mention = auth TLV.

=C2=A0

Ok. Have changed all references of =E2=80=9CNULL Aut= h TLV=E2=80=9D to =E2=80=9CNULL Auth Type=E2=80=9D.



  • =C2=A0

= =C2=A0

= Abstract:

= Mention that this document updates RFC5880.

=C2=A0

Done.



= =C2=A0

= Requirements Language

= Please put this is a separate (sub)section later, e.g. after introduction.<= u>

=C2=A0

Done.



= =C2=A0

= Introduction

= First paragraph: s/is computationally intensive process/is a computationall= y intensive process/

=C2=A0

Done.



= Split first sentence into 2, e.g.

=C2=A0=C2= =A0=C2=A0= Authenticating every BFD [RFC5880] packet with a Simple Password, or=

=C2=A0=C2= =A0=C2=A0= with a MD5 Message-Digest Algorithm [RFC1321], or Secure Hash=

=C2=A0=C2= =A0=C2=A0= Algorithm (SHA-1) algorithms is a computationally intensive process.=

=C2=A0=C2= =A0=C2=A0= This makes it difficult, if not impossible, to authenticate every packet,

=C2=A0=C2= =A0=C2=A0= particularly at faster rates.

=C2=A0

Done.



= =C2=A0

= 2nd=C2=A0paragraph: =E2=80=9C=E2=80=A6 only BFD frames that signal= a state change in BFD be authenticated.=E2=80=9D State change is not 100% = correct since P/F/D bit changes aren=E2=80=99t state changes (as mentioned in more detail belo= w in section 2 comments). What about this instead: =E2=80=9CState change, a= demand mode change (to D bit) or a poll sequence change (P or F bit change= ) in a BFD packet are categorized as a significant BFD change. This document proposes that all BFD control packets which sign= al a significant BFD change MUST be authenticated if the session=E2=80=99s = bfd.AuthType is non-zero. Other BFD control packets MAY be transmitted and = received without the A bit set.=E2=80=9D If you do use =E2=80=9Csignificant BFD change=E2=80=9D, add it to terminology sec= tion.

=C2=A0

Done.



= s/non-state change frame/BFD control packets without state or D/F/P bit cha= nge/, e.g.

= =E2=80=9CTo detect a Man In the Middle (MITM) attack, it is also proposed t= hat BFD control packets without a significant change be authenticated occas= ionally.= =C2=A0=C2=A0The interval of these control packets=E2=80=A6=E2=80=9D

=C2=A0

Done.



= =C2=A0

= Section 2

= POLL and DEMAND are NOT strictly states. POLL refers to =E2=80=9CPoll seque= nce=E2=80=9D as specified in section 6.5 of RFC5880. DEMAND refers to =E2= =80=9CDemand mode=E2=80=9D as specified in section 6.6 of RFC5880. In the table, the POLL entry refers to polling sequence enabled and in any BF= D state. Likewise, the DEMAND entry refers to Demand mode. This means that = a session in UP state, in demand mode and polling sequence enabled will mat= ch 3 entries in that table. It=E2=80=99s a bit confusing. Here=E2=80=99s what I suggest instead:

  1. Take POLL out of the ta= ble. Add a paragraph mentioning that if P or F bit changes value, the packe= t MUST be authenticated
  2. Take DEMAND out of the = table. Add a paragraph mentioning that if D bit changes value, the packet M= UST be authenticated

=C2=A0

Have made the change as follows. I am hoping Ashesh = can comment on it.

=C2=A0

The significant changes for which authentication is = being suggested

=C2=A0 =C2=A0include:

=C2=A0

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Read =C2=A0 : On = state change from <column> to <row>

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Auth =C2=A0 : Aut= henticate frame

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 NULL =C2=A0 : No = Authentication. Use NULL AUTH Type.

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 n/a =C2=A0 =C2=A0= : Invalid state transition.

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Select : Most pac= kets NULL AUTH. Selective (periodic)

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0packets authenticated.

=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| DOWN =C2=A0 | INIT =C2=A0 | UP =C2=A0 =C2=A0 |=

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--------+--------= +--------+--------+

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| DOWN =C2=A0 | = =C2=A0NULL =C2=A0| =C2=A0Auth =C2=A0| =C2=A0Auth =C2=A0|

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--------+--------= +--------+--------+

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| INIT =C2=A0 | = =C2=A0Auth =C2=A0| =C2=A0NULL =C2=A0| =C2=A0n/a =C2=A0 |

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--------+--------= +--------+--------+

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| UP =C2=A0 =C2=A0= | =C2=A0Auth =C2=A0| =C2=A0Auth =C2=A0| Select |

=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=A0Optimized Authentication Map

=C2=A0

=C2=A0 =C2=A0If P or F bit changes value, the packet= MUST be authenticated.=C2=A0 If

=C2=A0 =C2=A0the D bit changes value, the packet MUS= T be authenticated.

<RR> I=E2=80=99m good with this. I=E2=80=99m o= k with doing this differently too, as long as the crux of my concern is sti= ll addressed.



  1. =C2=A0

= =C2=A0

= Another comment on the table. The text says it should be read as state chan= ge from column to row. Column INIT to row UP is n/a whereas column UP to ro= w INIT is Auth. INIT to UP is a valid transition, UP to INIT is not (has to go through DOWN first). So I think t= hose entries should be reversed in the table.

=C2=A0

Done.



= =C2=A0

= Last paragraph: CC frames is not defined in BFD, use =E2=80=9Ccontrol packe= ts=E2=80=9D instead?

=C2=A0

Done.



= =C2=A0

= Section 3

= Sequence number mentions =E2=80=9Cas defined in [RFC5880]=E2=80=9D. Suggest= mentioning bfd.XmitAuthSeq

=C2=A0

Done.



= =C2=A0

= Security Considerations.

= I believe this needs to be beefed up:

  1. Use of sequence number = for non-authenticated frames. Secure sequence numbers even better.
  2. Mention (again) that no= n-authenticated BFD packets which have a significant change (state, D/F/P) = are dropped. So if someone injects a non-authenticated packet with Down sta= te to take down the session, that won=E2=80=99t work.

=C2=A0

The Security Considerations section now reads as fol= lows:

=C2=A0

=C2=A0 The approach described in this document enhan= ces the ability to

=C2=A0 =C2=A0authentication a BFD session by taking = away the onerous requirement

<RR> s/authentication a BFD/authenticate a BFD= /

=C2=A0 =C2=A0that every frame be authenticated.=C2= =A0 By authenticating packets that

<RR> s/every frame/every BFD control packet/

=C2=A0 =C2=A0affect the state of the session, the se= curity of the BFD session is

=C2=A0 =C2=A0maintained.=C2=A0 In this mode, packets= that are a significant change but

=C2=A0 =C2=A0are not authenticated, are dropped by t= he system.=C2=A0 Therefore, a

=C2=A0 =C2=A0malicious user that tries to inject a n= on-authenticated packet, e.g.

=C2=A0 =C2=A0with a Down state to take a session dow= n will fail.=C2=A0 That combined

=C2=A0 =C2=A0with the proposal of using sequence num= ber defined in Secure BFD

=C2=A0 =C2=A0Sequence Numbers [I-D.ietf-bfd-secure-s= equence-numbers] further

=C2=A0 =C2=A0enhances the security of BFD sessions.<= u>

=C2=A0

=C2=A0

Regards,

Reshad.

=C2=A0

=C2=A0

  1. =C2=A0

= =C2=A0

= Section 6.2

= RFC5880 should be a normative reference.

=C2=A0

Done.

=C2=A0



--000000000000cb3e1705a9a27f46-- From nobody Mon Jul 6 08:24:11 2020 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 03F283A162F; Mon, 6 Jul 2020 08:24:10 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: rtg-bfd@ietf.org Subject: I-D Action: draft-ietf-bfd-vxlan-13.txt X-Test-IDTracker: no X-IETF-IDTracker: 7.7.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: rtg-bfd@ietf.org Message-ID: <159404904994.28232.6139255224752485527@ietfa.amsl.com> Date: Mon, 06 Jul 2020 08:24:10 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Jul 2020 15:24:10 -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 WG of the IETF. Title : BFD for VXLAN Authors : Santosh Pallagatti Sudarsan Paragiri Vengada Prasad Govindan Mallik Mudigonda Greg Mirsky Filename : draft-ietf-bfd-vxlan-13.txt Pages : 11 Date : 2020-07-06 Abstract: This document describes the use of the Bidirectional Forwarding Detection (BFD) protocol in point-to-point Virtual eXtensible Local Area Network (VXLAN) tunnels used to form an overlay network. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-vxlan-13 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan-13 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-13 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 Mon Jul 6 08:29:59 2020 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 36FDD3A1651; Mon, 6 Jul 2020 08:29:57 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, 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 Bx1NUHKb741b; Mon, 6 Jul 2020 08:29:53 -0700 (PDT) Received: from mail-lj1-x22b.google.com (mail-lj1-x22b.google.com [IPv6:2a00:1450:4864:20::22b]) (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 DC7D53A162E; Mon, 6 Jul 2020 08:29:42 -0700 (PDT) Received: by mail-lj1-x22b.google.com with SMTP id q7so32646517ljm.1; Mon, 06 Jul 2020 08:29:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=+/dyVEAGvaI1yNfU7xM1NuDEsIlV7cXR/IvsItOJF4w=; b=j+a40UKbVinKfG4ARQmCbAfzLKqVHcJTLNxntohaifNJI2wIIYijIt2g7D6ICMmnWx QafxP93noBJ2paBiEqrNiay8oTZn9yb2mF70qWqk9UBNq4D7xEcEM4qof+PZqV93gKuZ CviqMUhaSDrdRd519R9N/36wN6tm9CjiA6JLL6G1tg0fMhgUsKucfN/bISqrqURwRxCc QM2TRq9L2u2/xNe5GWs0kkzJRRDli0CH9VJ25ZAiHVnxmd21X6fO0Pu1Pw+oPS5ugMZW 5xTc2aaDhDucC1fSAZbdr9mvkn2hvXAi22a4YszoB2q7R4Zc7B9GYc2YpGjIn76HeoOU L+gA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=+/dyVEAGvaI1yNfU7xM1NuDEsIlV7cXR/IvsItOJF4w=; b=C+bLj6niUqV8smZRlFpHI8uuyYIHp+x0fhZ07Q2Uy4iATmtjaMhAzSLxnf2+RYpXep rG4ZdKX+noAlzvwurST8QFwgKVzkinxCB5/+UVXFuOGOdZ4D1bfD8k/Y2KX8VfB7fgI0 Cy3b1qSh9lTRlsPfLDTFbCuatwb9HHNDI3sUmCFaCcQTpXzGBmM7wKqBkOvpA1SahNyt tmY5ySgV1uDf/9EBAdF6Sg9N/ZiH5TRUeFCG+kvVtI6IK1vo69pFTWWkrd7ISQVy/5g8 5WUT8vqU5HJ4zaPfPe53KrHZlGVip4Rr2+RZrBN/Am7gnaZyTxX0E9V/3NL0TvJF7wpn 71lw== X-Gm-Message-State: AOAM5303Cgy7u/pVLx/J5A0tzpEGdO2A0uUzT+kmWpIhbnXVtnJpWmoc TJsj8RO9ovpcq2WU94nwWx0AqSVNmw5HE9JIQ3cwWw== X-Google-Smtp-Source: ABdhPJzGrw/kL5Bit85BLfQEXsQQ2YYcLG/9Hou26UFXXnkju4vM1ekDWxZ1r+DFhVNu4X7HJY6jhXbZzaMUJaluL3E= X-Received: by 2002:a2e:9611:: with SMTP id v17mr15983262ljh.110.1594049380847; Mon, 06 Jul 2020 08:29:40 -0700 (PDT) MIME-Version: 1.0 References: <159404904994.28232.6139255224752485527@ietfa.amsl.com> In-Reply-To: <159404904994.28232.6139255224752485527@ietfa.amsl.com> From: Greg Mirsky Date: Mon, 6 Jul 2020 08:29:31 -0700 Message-ID: Subject: Fwd: I-D Action: draft-ietf-bfd-vxlan-13.txt To: rtg-bfd WG , bfd-chairs@ietf.org, Martin Vigoureux Content-Type: multipart/alternative; boundary="00000000000019937805a9c78b29" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 06 Jul 2020 15:29:58 -0000 --00000000000019937805a9c78b29 Content-Type: text/plain; charset="UTF-8" Dear All, updates in this version address comments received during the IESG review. Your questions, comments, and suggestions are always welcome and greatly appreciated. Regards, Greg ---------- Forwarded message --------- From: Date: Mon, Jul 6, 2020 at 8:24 AM Subject: I-D Action: draft-ietf-bfd-vxlan-13.txt To: Cc: A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Bidirectional Forwarding Detection WG of the IETF. Title : BFD for VXLAN Authors : Santosh Pallagatti Sudarsan Paragiri Vengada Prasad Govindan Mallik Mudigonda Greg Mirsky Filename : draft-ietf-bfd-vxlan-13.txt Pages : 11 Date : 2020-07-06 Abstract: This document describes the use of the Bidirectional Forwarding Detection (BFD) protocol in point-to-point Virtual eXtensible Local Area Network (VXLAN) tunnels used to form an overlay network. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-vxlan-13 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan-13 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-13 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/ --00000000000019937805a9c78b29 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear All,
updates in this version address comments rec= eived during the IESG review.
Your questions, comments, and sugge= stions are always welcome and greatly appreciated.

Regards,
Greg

---------- Forwarded message ---------
From: <internet-draf= ts@ietf.org>
Date: Mon, Jul 6, 2020 at 8:24 AM
Subject:= I-D Action: draft-ietf-bfd-vxlan-13.txt
To: <i-d-announce@ietf.org>
Cc: <rtg-bfd@ietf.org>



A New Internet-Draft is available from the on-line Internet-Drafts director= ies.
This draft is a work item of the Bidirectional Forwarding Detection WG of t= he IETF.

=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= BFD for VXLAN
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Sant= osh Pallagatti
=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 Sudarsan Paragiri
=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 Vengada Prasad Govindan
=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 Mallik Mudigonda
=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 Greg Mirsky
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet= f-bfd-vxlan-13.txt
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:= 11
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 := 2020-07-06

Abstract:
=C2=A0 =C2=A0This document describes the use of the Bidirectional Forwardin= g
=C2=A0 =C2=A0Detection (BFD) protocol in point-to-point Virtual eXtensible = Local
=C2=A0 =C2=A0Area Network (VXLAN) tunnels used to form an overlay network.<= br>

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bf= d-vxlan/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-bfd-vxlan-= 13
https://datatracker.ietf.org/doc/html/d= raft-ietf-bfd-vxlan-13

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft= -ietf-bfd-vxlan-13


Please note that it may take a couple of minutes from the time of submissio= n
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/


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<159463868384.22444.17297861485505296075@ietfa.amsl.com> Date: Mon, 13 Jul 2020 04:11:23 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Jul 2020 11:11:27 -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 WG of the IETF. Title : BFD Stability Authors : Ashesh Mishra Mahesh Jethanandani Ankur Saxena Santosh Pallagatti Mach Chen Peng Fan Filename : draft-ietf-bfd-stability-06.txt Pages : 6 Date : 2020-07-13 Abstract: This document describes extensions to the Bidirectional Forwarding Detection (BFD) protocol to measure BFD stability. Specifically, it describes a mechanism for detection of BFD packet loss. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-stability/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-stability-06 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-stability-06 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-stability-06 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 Mon Jul 13 12:07:30 2020 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 087AA3A174D; Mon, 13 Jul 2020 12:07:25 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: rtg-bfd@ietf.org Subject: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt X-Test-IDTracker: no X-IETF-IDTracker: 7.8.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: rtg-bfd@ietf.org Message-ID: <159466724499.14803.15233027731222579839@ietfa.amsl.com> Date: Mon, 13 Jul 2020 12:07:25 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Jul 2020 19:07:25 -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 WG of the IETF. Title : Optimizing BFD Authentication Authors : Mahesh Jethanandani Ashesh Mishra Ankur Saxena Manav Bhatia Filename : draft-ietf-bfd-optimizing-authentication-10.txt Pages : 8 Date : 2020-07-13 Abstract: This document describes an optimization to BFD Authentication as described in Section 6.7 of BFD RFC 5880. This document updates RFC 5880. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-10 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-optimizing-authentication-10 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-optimizing-authentication-10 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 Mon Jul 13 13:56:27 2020 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 E3D883A081F for ; Mon, 13 Jul 2020 13:56:25 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.098 X-Spam-Level: X-Spam-Status: No, score=-2.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, 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 XRtxDxuTgtSk for ; Mon, 13 Jul 2020 13:56:24 -0700 (PDT) Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) (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 3E21C3A098A for ; Mon, 13 Jul 2020 13:56:17 -0700 (PDT) Received: by mail-pj1-x102e.google.com with SMTP id ls15so496829pjb.1 for ; Mon, 13 Jul 2020 13:56:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:content-transfer-encoding:mime-version:subject:date:references :to:in-reply-to:message-id; bh=9Yoi00qU1nGROo4BvcZOIsz5N9F6UshJ/lhjW7Ou94I=; b=KccqCboa4nug13+6boGNKGJjVS1RiO1FfJbcFcAl/1VkuE6d8nQUId0DHoZNBvA9Rg mVsJC2o5NNB4qh7/+R2JUbcCSHkxZdewC1wy8XaV2SR5/chRK7Igvoc30IO9cIKybzOj H3alwHYOpAT5zzQrMIMufvSxBPWw5uorArvl3qm8QVGyWdmvdj1CjZ/W9K8m+uZZlt2t bsi0+BNnTNxLG/yJAVQ7rMAYzE8TaHXHjPlz4HZLqOaYddW2GV4YqrfLddB6cTqeKTcB tWXIhDGr97MSuR1kwsa72eXwPyJFDP8GQ+jviRfrsauX5QXCE3lPar7EoWuk0i9yMl8M t3+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:date:references:to:in-reply-to:message-id; bh=9Yoi00qU1nGROo4BvcZOIsz5N9F6UshJ/lhjW7Ou94I=; b=XAQ4B8PMoGfH8AjdjjFTRayTEVoX0f5MtmEFbnKI9qlhtFa9xPL1+dJBDcULKdVARL Pkeuu+N3Z4AjoRV0mWmsJhYBza41+m2jrIg6RuTSeOL0/3p17I8Tl3XIS+ETb0rRX29J 1B9JBZ1g84gQ26l4A1HUvETBOmtKDrKQv0U/LL8ulY5vKXvfornoTlS1HpQ2oHgqbbnb 6pbsiAXrE0/I5MQhO4+DYEPyTBUNnZky+DOnX5R9OXI0OE8ojgr34alx7a1Z/FURJq0E pvhbZSPBryLPH7M0xX6rVWM7KvIY5qy2hnZ9J7d5hcNa5nYNvK1w0/SVxBEGh5YPLVPj oJiQ== X-Gm-Message-State: AOAM531n96FSX63idJrB+msI1zxrRjdc80uHdX0O85YwCXgQZGFJ/D2J KQlhNMApAdGUnIYCkjzvfExYpcfD X-Google-Smtp-Source: ABdhPJzwg9ZniXgEVdRP0M/kMV1xmphsTmIFjg+gM+pZXr05o2AgrD2bU7+FCGkhrImnUoD+yWaXPQ== X-Received: by 2002:a17:902:ab94:: with SMTP id f20mr1247855plr.232.1594673776292; Mon, 13 Jul 2020 13:56:16 -0700 (PDT) Received: from ?IPv6:2601:647:5600:5020:1d73:6c37:35ce:d3f6? ([2601:647:5600:5020:1d73:6c37:35ce:d3f6]) by smtp.gmail.com with ESMTPSA id z9sm13893942pgh.94.2020.07.13.13.56.15 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 Jul 2020 13:56:15 -0700 (PDT) From: Mahesh Jethanandani Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.5\)) Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Date: Mon, 13 Jul 2020 13:56:14 -0700 References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> To: "rtg-bfd@ietf. org" In-Reply-To: <159466724499.14803.15233027731222579839@ietfa.amsl.com> Message-Id: X-Mailer: Apple Mail (2.3445.9.5) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 13 Jul 2020 20:56:26 -0000 This version of the draft addresses some of the shepherd comments. = Welcome any feedback. > On Jul 13, 2020, at 12:07 PM, 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 WG = of the IETF. >=20 > Title : Optimizing BFD Authentication > Authors : Mahesh Jethanandani > Ashesh Mishra > Ankur Saxena > Manav Bhatia > Filename : = draft-ietf-bfd-optimizing-authentication-10.txt > Pages : 8 > Date : 2020-07-13 >=20 > Abstract: > This document describes an optimization to BFD Authentication as > described in Section 6.7 of BFD RFC 5880. This document updates RFC > 5880. >=20 >=20 > The IETF datatracker status page for this draft is: > = https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/= >=20 > There are also htmlized versions available at: > = https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-10 > = https://datatracker.ietf.org/doc/html/draft-ietf-bfd-optimizing-authentica= tion-10 >=20 > A diff from the previous version is available at: > = https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-optimizing-authenticati= on-10 >=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 >=20 Mahesh Jethanandani mjethanandani@gmail.com From nobody Sun Jul 19 13:06:02 2020 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 9E4A83A0EE2 for ; Mon, 13 Jul 2020 04:13:25 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: 0.17 X-Spam-Level: X-Spam-Status: No, score=0.17 tagged_above=-999 required=5 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_COMMENT_SAVED_URL=0.357, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_HTML_ATTACH=0.01, URIBL_BLOCKED=0.001] autolearn=no 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 pytsqLcvDh6m for ; Mon, 13 Jul 2020 04:13:23 -0700 (PDT) Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) (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 B7FE73A0F65 for ; Mon, 13 Jul 2020 04:12:52 -0700 (PDT) Received: by mail-io1-xd29.google.com with SMTP id c16so12954477ioi.9 for ; Mon, 13 Jul 2020 04:12:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=1h87IlFIElsSjCQjSlJoVEN2/MTLRTRKZm4DH5WCGI8=; b=ZiNJWQ0+MaDIa4jIqmuT3zYdWEvz0mMmBD55XPl4MWYEQdniQljiQySJxMF9fzS9Mo MdiYRVt4M/dQC9oeYFlDmKgwwdp4+fnDJyGPX2kdONUD2lsPCvGgqGeQtfx/DLLStngw Tpi3/aOANeao2KGMbh6YgFLb4T3o52/KxXmxBMvNCKwPt9Pc4B8He3ZnH/i8jAD44kLE 4vPguN6OVWzHseDTJNkf22a0TDz75mfoEzQL75K6XxKKcbGmc7v3lQElxr6tRVWax5ex X5KCKMU7ahRSbRxhNzvPQLr03fD8VP6ht1eQcQLixx/igUke4zeT1PLVWNX/bqMffeFn /zlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=1h87IlFIElsSjCQjSlJoVEN2/MTLRTRKZm4DH5WCGI8=; b=GFpYeRlbcB1omzZtIXHsRsxiVjxv082Jp8K5RJhUnQqnLihJlFRMtsrSexIYIp3E7O pH+Gdso+JlD39nuriP7LSCQmveWbANy9G0gPymmGSe//1Ljge9NR+90DHBwaXur5Ma9L d7ay4mB7K5BedIf3L9viQyNZLH3Oxu1LDaxoZ2VmIsasE9aJr2Yc2h3j1qfqTxg9rnqW XUAq1+fA06ZUVZrmQt96v1xUOLtd/X0wqhTYk2a3BVbO62gT5TiBr4IMOJmdii0XQiTp +rF857y1x8zF4z08JoBmiTA9QJeKnC5akwTrZMTTGhK36yOTyEs+aXSXui8xh3rZDNvM F9dw== X-Gm-Message-State: AOAM531TNaPkNwXqmENhJYN3g5DBMGpal0c7B7LiVZmx4FLcWtP4YlVe 2OCKTVYOpkTxFG8QEgEgl5PpE6mbTaCPtH3UO7VHHVZh X-Google-Smtp-Source: ABdhPJzUEdEiON3KXypaEpOtX0LLQhfITmZ8Jf6+Hxmt8rWFdThHjO92e/hIhio5BJNfpN1rMv084BCLzTH4uA2U+YU= X-Received: by 2002:a6b:1496:: with SMTP id 144mr60750482iou.6.1594638771670; Mon, 13 Jul 2020 04:12:51 -0700 (PDT) MIME-Version: 1.0 References: <159463868413.22444.9991690475315066846@ietfa.amsl.com> In-Reply-To: <159463868413.22444.9991690475315066846@ietfa.amsl.com> From: Santosh P K Date: Mon, 13 Jul 2020 16:42:40 +0530 Message-ID: Subject: Fwd: New Version Notification for draft-ietf-bfd-stability-06.txt To: rtg-bfd WG Content-Type: multipart/mixed; boundary="00000000000088f48405aa50c544" Archived-At: X-Mailman-Approved-At: Sun, 19 Jul 2020 13:06:00 -0700 X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 13 Jul 2020 11:13:26 -0000 --00000000000088f48405aa50c544 Content-Type: multipart/alternative; boundary="00000000000088f48105aa50c542" --00000000000088f48105aa50c542 Content-Type: text/plain; charset="UTF-8" Hello All, A new version of draft for BFD-stablity is here for review. Changes include addressing shepherd comments as provided here. https://datatracker.ietf.org/doc/draft-ietf-bfd-stability/shepherdwriteup/. Please also see attached diff. Thanks Santosh P K ---------- Forwarded message --------- From: Date: Mon, Jul 13, 2020 at 4:41 PM Subject: New Version Notification for draft-ietf-bfd-stability-06.txt To: Mach Chen , Ankur Saxena , Peng Fan , Mahesh Jethanandani , Ashesh Mishra , Santosh Pallagatti < santosh.pallagatti@gmail.com> A new version of I-D, draft-ietf-bfd-stability-06.txt has been successfully submitted by Santosh Pallagatti and posted to the IETF repository. Name: draft-ietf-bfd-stability Revision: 06 Title: BFD Stability Document date: 2020-07-13 Group: bfd Pages: 6 URL: https://www.ietf.org/internet-drafts/draft-ietf-bfd-stability-06.txt Status: https://datatracker.ietf.org/doc/draft-ietf-bfd-stability/ Htmlized: https://tools.ietf.org/html/draft-ietf-bfd-stability-06 Htmlized: https://datatracker.ietf.org/doc/html/draft-ietf-bfd-stability Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-stability-06 Abstract: This document describes extensions to the Bidirectional Forwarding Detection (BFD) protocol to measure BFD stability. Specifically, it describes a mechanism for detection of BFD packet loss. 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 --00000000000088f48105aa50c542 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello All,
=C2=A0 =C2=A0 A new version of draft for BF= D-stablity is here for review. Changes include addressing shepherd comments= as provided here.=C2=A0https://datatracker.ietf.org/doc/draft-= ietf-bfd-stability/shepherdwriteup/. Please also see attached diff.=C2= =A0

Thanks
Santosh P K=C2=A0

---------- For= warded message ---------
From: <internet-drafts@ietf.org>
Date: = Mon, Jul 13, 2020 at 4:41 PM
Subject: New Version Notification for draft= -ietf-bfd-stability-06.txt
To: Mach Chen <mach.chen@huawei.com>, Ankur Saxena <ankurpsaxena@gmail.com>, Peng Fan <fanp08@gmail.com>, Mahesh Jethanand= ani <mjethanandani@gmail.com<= /a>>, Ashesh Mishra <mishr= a.ashesh@gmail.com>, Santosh Pallagatti <santosh.pallagatti@gmail.com>

<= br>
A new version of I-D, draft-ietf-bfd-stability-06.txt
has been successfully submitted by Santosh Pallagatti and posted to the
IETF repository.

Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-bfd-stability
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A006
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD Stability
Document date:=C2=A0 2020-07-13
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 https://www.ietf.org/internet-drafts/draft-ietf-bfd-stability= -06.txt
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0h= ttps://datatracker.ietf.org/doc/draft-ietf-bfd-stability/
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0https://t= ools.ietf.org/html/draft-ietf-bfd-stability-06
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0ht= tps://datatracker.ietf.org/doc/html/draft-ietf-bfd-stability
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-stability-06

Abstract:
=C2=A0 =C2=A0This document describes extensions to the Bidirectional Forwar= ding
=C2=A0 =C2=A0Detection (BFD) protocol to measure BFD stability.=C2=A0 Speci= fically, it
=C2=A0 =C2=A0describes a mechanism for detection of BFD packet loss.




Please note that it may take a couple of minutes from the time of submissio= n
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat


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10024) with ESMTP id D3refhEMkmBh; Mon, 20 Jul 2020 14:26:51 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 235F93A0FA3; Mon, 20 Jul 2020 14:26:50 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 26F251E2FB; Mon, 20 Jul 2020 17:37:35 -0400 (EDT) Date: Mon, 20 Jul 2020 17:37:35 -0400 From: Jeffrey Haas To: Greg Mirsky , Donald Eastlake Cc: The IESG , bfd-chairs@ietf.org, draft-ietf-bfd-vxlan@ietf.org, rtg-bfd WG Subject: BFD for vxlan Destination MAC field (was Re: draft-ietf-bfd-vxlan IESG status) Message-ID: <20200720213734.GC25102@pfrc.org> References: <20200127221705.GB17622@pfrc.org> <20200616211057.GA21373@pfrc.org> 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: 2.1.29 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, 20 Jul 2020 21:26:53 -0000 On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote: > >> Proposed solution: A MAC value should be chosen that is well known and the > >> text would become: > >> > >> "Destination MAC: A Management VNI, which does not have any tenants, will > >> have no dedicated MAC address for decapsulated traffic. The value > >> X:X:X:X:X > >> SHOULD be used in this field." > >> > >> SHOULD might need to be MUST. Since a partial motivation for permitting > >> the > >> flexibility in the specification to NOT use the management VNI is desired= > > , > >> MUST might be inappropriate. > >> > > GIM>> Accepted the suggested text. I agree that the flexibility to not use > > the Management VNI is permitted in the specification and thus SHOULD in the > > text is consistent with that scenario. How would we pick the MAC address? > > I am out of my area of expertise and I was hoping someone in the IESG can offer a fix. :-) I am copying Donald Eastlake since he's the designated expert for the IANA MAC address block. > > Donald, review of the thread may be useful, but tersely the need is to have a well known MAC address that can be placed in this vxlan PDU that is literally a placeholder of "not to be used for forwarding". The packet arrives at the endpoint and, if not immediately accepted, would be dropped. > > If there is no well known MAC that could be used for such a behavior, perhaps an address from the IANA block may be used? > > While I suspect the IANA mac documentation range could be used, IANA may not appreciate that. Donald is not responding to emails. Considering I've been similarly bad about responding, that's forgivable. However, in the interest of advancing the document, I'd like to make a proposal. https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml Proposed text: : Destination MAC: A Management VNI, which does not have any tenants, will : have no dedicated MAC address for decapsulated traffic. The value : [TBD1] SHOULD be used in this field. : : IANA Considerations: : : IANA is requested to assign a single MAC address to the value TBD1 from the : "IANA Unicast 48-bit MAC Address" registry from the "Unassigned (small : allocations)" block. The Usage field will be "BFD for vxlan" with a : Reference field of this document. -- Jeff From nobody Mon Jul 20 14:58:38 2020 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 696953A0FE5; Mon, 20 Jul 2020 14:58:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 RXyl47J4SiBP; Mon, 20 Jul 2020 14:58:34 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 69F183A0FE3; Mon, 20 Jul 2020 14:58:34 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 95D5F1E2FB; Mon, 20 Jul 2020 18:09:18 -0400 (EDT) Date: Mon, 20 Jul 2020 18:09:18 -0400 From: Jeffrey Haas To: Greg Mirsky , iesg@ietf.org Cc: bfd-chairs@ietf.org, draft-ietf-bfd-vxlan@ietf.org, rtg-bfd WG Subject: Re: draft-ietf-bfd-vxlan IESG status Message-ID: <20200720220917.GD25102@pfrc.org> References: <20200127221705.GB17622@pfrc.org> <20200616211057.GA21373@pfrc.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200616211057.GA21373@pfrc.org> User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 20 Jul 2020 21:58:37 -0000 Review of -13 vs. previous open issues. The short version is the issue list is largely resolved. Summary of actions: - Update BFD Echo text as per last comment in this reply. - We need to resolve MAC address assignment. - There may be a lingering issue over the loopback network which will be addressed in a reply to Benjamin. -- Jeff On Tue, Jun 16, 2020 at 05:10:57PM -0400, Jeffrey Haas wrote: > > Open Issue 2: Document Status should be Informational rather than Proposed > > Standard. > > > > Proposed Action: Greg should make the document Informational. Prior WG > > discussion suggested that we don't really care what level it should be at, > > and had actually requested IESG guidance long ago via our AD. > > This action is pending. This is resolved. > > --- > > > > Open Issue 5: Comma parsing issue (COMMENT via Benjamin K.) > > > > Proposed Action: Accept Benjamin's suggested changes. (RFC Editor will win > > the day here though!) > > This action is pending. This is, in my opinion, resolved. The text in -13 is: : This document describes the use of Bidirectional Forwarding Detection : (BFD) protocol to enable monitoring continuity of the path between : VXLAN VTEPs that are performing as Network Virtualization Endpoints, : and/or availability of a replicator MSN using a Management VNI : (Section 4). All other uses of the specification to test toward : other VXLAN endpoints are out of the scope. > > --- > > > > Open Issue 6: "Section 3, MUST NOT be forwarded to a VM" (COMMENT via > > Benjamin K.) > > > > Proposed Action: The fate of this issue is tied to Open Issue 3. > > If the proposal is limited solely to management VNI, this text is not > > relevant and may be deleted. > > This action is still open. This is resolved. > > --- > > > > Open Issue 7: "::FFFF:7F00:0/104 IPv6 range" (COMMENT via Benjamin K.) > > > > Proposed Action: I believe this issue's fate is similarly tied to Open Issue 3. > > If the proposal is limited solely to management VNI, this text is not > > relevant and may be deleted. > > This action is still pending. I believe this issue should be resolved in its original intent. However, Benjamin still has it listed in his most recent comments. Will move the lingering response to there. > > --- > > > > Open Issue 8: "Section 4: MUST ensure that the BFD Control packet is not > > forwarded to a tenant but is processed locally at the remote VTEP" (COMMENT > > via Benjamin K.) > > > > Proposed Action: I believe this issue's fate is similarly tied to Open Issue 3. > > If the proposal is limited solely to management VNI, this text is not > > relevant and may be deleted. > > This action is still pending and perhaps requires further discussion. > > Benjamin's point was: > "This has to be 100% reliable, and I think we need to provide some > example mechanism that has that property even if we don't mandate that > it be the only allowed mechanism." > > The motivation here was that when this specification was intended to address > a fully generalized BFD for vxlan for arbitrary VNIs, there was a strong > need to say "do not forward the BFD traffic to the tenant". > > For the now default scenario of only the management VNI, this text may be > adequate. Benjamin should look at the current document and decide if the > scenario is still of concern. I believe our discussion is that it's now appropriate in its current form. I'm considering this resolved. > > --- > > > > Open Issue 9: "Destination MAC: This MUST NOT be of one of tenant's MAC > > addresses." (COMMENT via Benjamin K.) > > > > Proposed Action: I believe this issue's fate is similarly tied to Open Issue 3. > > If the proposal is limited solely to management VNI, this text is not > > relevant and may be deleted. > > In -12, we now have the following text: > "Destination MAC: since a Management VNI is the VNI that does > not have any tenants, the value of this field is not analyzed > by the receiving VTEP." > > For the management VNI, this text is true. However, it likely requires a > value that is described in the specification. > > Proposed solution: A MAC value should be chosen that is well known and the > text would become: > > "Destination MAC: A Management VNI, which does not have any tenants, will > have no dedicated MAC address for decapsulated traffic. The value X:X:X:X:X > SHOULD be used in this field." > > SHOULD might need to be MUST. Since a partial motivation for permitting the > flexibility in the specification to NOT use the management VNI is desired, > MUST might be inappropriate. I believe there's consensus that we want a SHOULD here. The discussion for the MAC address has been split to a separate thread. > > --- > > > > Open Issue 19: "Section 4...FCS" (COMMENT via Eric V.) > > > > Proposed Action: Accept suggested change to "Outer Ethernet FCS"? > > This action is pending. This is resolved in -13. > > --- > > > > Open Issue 20: "using the src mac as the dst mac" (COMMENT via Eric V.) > > > > Proposed Action: ? I'm unclear what the proposal and comment is here. > > It is unclear what action was requested. Still lingering. Will defer to next IESG review. > > --- > > > > Open Issue 22: "terminology isn't" (COMMENT via Warren K.) > > > > Proposed Action: Either rename the section "acronyms used in this document" > > or expand the section to cover the terminology. > > This action is still pending. This is resolved in -13. > > --- > > > > Open Issue 25: "leading to a false negative" (COMMENT via Barry L.) > > > > Proposed Action: The underlying concern in this sentence is that BFD packets > > must not be mis-delivered to VMs since there will be no BFD machinery > > present in that VM to execute the BFD procedures and thus sessions will > > drop. Possible action is to simply delete this sentence since it > > prematurely anticipates procedures later described in the document. > > This action is still pending. The problematic text was dropped. This issue is resolved. > > --- > > > > Open Issue 26: "loopback range through a firewall" (COMMENT via Barry L.) > > > > Proposed Action: Accept suggested rewording. > > This action is still pending. I believe this issue was resolved by dropping the firewall text in -13. > --- > > Section 7 should be rewritten as: > 7. BFD Echo Function > > Support for the BFD Echo function [RFC5880], Section 3.2, is outside the > scope of this document. This issue is still pending. -- Jeff From nobody Mon Jul 20 15:28:59 2020 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 E2A223A1048; Mon, 20 Jul 2020 15:28:50 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, 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 jKxbtampVl8Q; Mon, 20 Jul 2020 15:28:49 -0700 (PDT) Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::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 E0F4A3A1046; Mon, 20 Jul 2020 15:28:48 -0700 (PDT) Received: by mail-lj1-x22e.google.com with SMTP id f5so21934296ljj.10; Mon, 20 Jul 2020 15:28:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ChJKODLbwy7cyK21Po13gSX+MGKuXHHcbayDtiy4EXE=; b=sOuB7YQ2QSb5W278au535tiM8wXEBBX9xVtYfREIw008+5bB8bNpYCFnstSr3PlBrs kT/FN3Ew1e+IdNU5Oh3hh//U9o1VjUYWQuzIQp7OeLzrFPtfUd/MnFoQY++kQgCV36s2 Uy0gi85l/FW4tVxV3thX5scoUURaczGjjSWcYJCY8X6R0PkvuUtY9c/+rpZ1k4N+CpE1 h3BgHM0VJZngSiOTTZzB6XvA5q4QkC/3dKkw320/1huI9f+qNkUpwihquiCRhR+uQd+8 ExbTUFjzaB8bvH3jJvqjNACbOw79oGSG2JNvjDQPXDzAe6emL5/6n3bUAfUGv/j0Mzis V65Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ChJKODLbwy7cyK21Po13gSX+MGKuXHHcbayDtiy4EXE=; b=SfVPnBMk7cehdj873vf8ofY09JtpHjLnMkek9YWqRe3IhuPsZbMBqAdtyJ6gOIIuXU yyEZUZn4okq4wkuJL3HGjIwf8yPIuGPY/pa5GYKHUYdTh/d9rQ9u6AOD3L/ka2/nWLJa 1vaNbv8fa42t2OZAmnkQJy/r/r139mtoUtU8S7Vrfgj0gDAgziSV/aCn31xf3GfS9jDH 8+akgtUNNkFY+fnQBcJ4wJTKm5f6wLJUCp23lOtAuerrw6k/mbt4xxhnXf25Sq+qEWuP P0D8JMF+uN03EP/XUdo1tiwkrdL6xvtW1XykZzDe35cWQnlNlDpsvzkAvuRTCnP+fkte DINA== X-Gm-Message-State: AOAM531UPT0jBicJo593/gRwItelCThQXlF18U1RA/CbdPuo2ag8ZM3r svKH9JrjIc31TCs0tkJjQdbrrXNpjS7Jy/ev6yQ= X-Google-Smtp-Source: ABdhPJzGNCgzMkQnUurn7ZYNmbsRh9AOQsOaSpTXnuxkZpp/c6mWWmU8nzjYe/WYgprpv4gJAnWfwgtMrkJS+BCWtrw= X-Received: by 2002:a2e:b00a:: with SMTP id y10mr667335ljk.266.1595284127075; Mon, 20 Jul 2020 15:28:47 -0700 (PDT) MIME-Version: 1.0 References: <20200127221705.GB17622@pfrc.org> <20200616211057.GA21373@pfrc.org> <20200720213734.GC25102@pfrc.org> In-Reply-To: <20200720213734.GC25102@pfrc.org> From: Greg Mirsky Date: Mon, 20 Jul 2020 15:28:36 -0700 Message-ID: Subject: Re: BFD for vxlan Destination MAC field (was Re: draft-ietf-bfd-vxlan IESG status) To: Jeffrey Haas Cc: Donald Eastlake , The IESG , bfd-chairs@ietf.org, draft-ietf-bfd-vxlan@ietf.org, rtg-bfd WG Content-Type: multipart/alternative; boundary="000000000000b5d01805aae70735" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 20 Jul 2020 22:28:51 -0000 --000000000000b5d01805aae70735 Content-Type: text/plain; charset="UTF-8" Hi Jeff, thank you for the proposed text. I'll include it in the working version with capitalizing VXLAN in the IANA section). Regards, Greg On Mon, Jul 20, 2020 at 2:26 PM Jeffrey Haas wrote: > On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote: > > >> Proposed solution: A MAC value should be chosen that is well known > and the > > >> text would become: > > >> > > >> "Destination MAC: A Management VNI, which does not have any tenants, > will > > >> have no dedicated MAC address for decapsulated traffic. The value > > >> X:X:X:X:X > > >> SHOULD be used in this field." > > >> > > >> SHOULD might need to be MUST. Since a partial motivation for > permitting > > >> the > > >> flexibility in the specification to NOT use the management VNI is > desired= > > > , > > >> MUST might be inappropriate. > > >> > > > GIM>> Accepted the suggested text. I agree that the flexibility to not > use > > > the Management VNI is permitted in the specification and thus SHOULD > in the > > > text is consistent with that scenario. How would we pick the MAC > address? > > > > I am out of my area of expertise and I was hoping someone in the IESG > can offer a fix. :-) I am copying Donald Eastlake since he's the > designated expert for the IANA MAC address block. > > > > Donald, review of the thread may be useful, but tersely the need is to > have a well known MAC address that can be placed in this vxlan PDU that is > literally a placeholder of "not to be used for forwarding". The packet > arrives at the endpoint and, if not immediately accepted, would be dropped. > > > > If there is no well known MAC that could be used for such a behavior, > perhaps an address from the IANA block may be used? > > > > While I suspect the IANA mac documentation range could be used, IANA may > not appreciate that. > > Donald is not responding to emails. Considering I've been similarly bad > about responding, that's forgivable. However, in the interest of advancing > the document, I'd like to make a proposal. > > https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml > > Proposed text: > > : Destination MAC: A Management VNI, which does not have any tenants, will > : have no dedicated MAC address for decapsulated traffic. The value > : [TBD1] SHOULD be used in this field. > : > : IANA Considerations: > : > : IANA is requested to assign a single MAC address to the value TBD1 from > the > : "IANA Unicast 48-bit MAC Address" registry from the "Unassigned (small > : allocations)" block. The Usage field will be "BFD for vxlan" with a > : Reference field of this document. > > > > -- Jeff > --000000000000b5d01805aae70735 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff,
thank you for the proposed text. I'll inc= lude it in the working version with capitalizing VXLAN in the IANA section)= .

Regards,
Greg

On Mon, Jul 20, 202= 0 at 2:26 PM Jeffrey Haas <jhaas@pfrc.= org> wrote:
On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote:
> >> Proposed solution: A MAC value should be chosen that is well = known and the
> >> text would become:
> >>
> >> "Destination MAC: A Management VNI, which does not have = any tenants, will
> >> have no dedicated MAC address for decapsulated traffic.=C2=A0= The value
> >> X:X:X:X:X
> >> SHOULD be used in this field."
> >>
> >> SHOULD might need to be MUST.=C2=A0 Since a partial motivatio= n for permitting
> >> the
> >> flexibility in the specification to NOT use the management VN= I is desired=3D
> > ,
> >> MUST might be inappropriate.
> >>
> > GIM>> Accepted the suggested text. I agree that the flexibi= lity to not use
> > the Management VNI is permitted in the specification and thus SHO= ULD in the
> > text is consistent with that scenario. How would we pick the MAC = address?
>
> I am out of my area of expertise and I was hoping someone in the IESG = can offer a fix. :-)=C2=A0 I am copying Donald Eastlake since he's the = designated expert for the IANA MAC address block.
>
> Donald, review of the thread may be useful, but tersely the need is to= have a well known MAC address that can be placed in this vxlan PDU that is= literally a placeholder of "not to be used for forwarding".=C2= =A0 The packet arrives at the endpoint and, if not immediately accepted, wo= uld be dropped.
>
> If there is no well known MAC that could be used for such a behavior, = perhaps an address from the IANA block may be used?
>
> While I suspect the IANA mac documentation range could be used, IANA m= ay not appreciate that.

Donald is not responding to emails.=C2=A0 Considering I've been similar= ly bad
about responding, that's forgivable.=C2=A0 However, in the interest of = advancing
the document, I'd like to make a proposal.

https://www.iana.org/assignm= ents/ethernet-numbers/ethernet-numbers.xhtml

Proposed text:

: Destination MAC: A Management VNI, which does not have any tenants, will<= br> : have no dedicated MAC address for decapsulated traffic.=C2=A0 The value : [TBD1] SHOULD be used in this field.
:
: IANA Considerations:
:
: IANA is requested to assign a single MAC address to the value TBD1 from t= he
: "IANA Unicast 48-bit MAC Address" registry from the "Unass= igned (small
: allocations)" block.=C2=A0 The Usage field will be "BFD for vxl= an" with a
: Reference field of this document.



-- Jeff
--000000000000b5d01805aae70735-- From nobody Mon Jul 20 16:32:38 2020 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 86C1A3A092F; Mon, 20 Jul 2020 16:18:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -0.696 X-Spam-Level: X-Spam-Status: No, score=-0.696 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_COMMENT_SAVED_URL=1.391, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_HTML_ATTACH=0.01, URIBL_BLOCKED=0.001] autolearn=no 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 hUvCwSVlWqKn; Mon, 20 Jul 2020 16:18:37 -0700 (PDT) Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) (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 7C8DB3A092D; Mon, 20 Jul 2020 16:18:36 -0700 (PDT) Received: by mail-lf1-x12e.google.com with SMTP id b30so8339652lfj.12; Mon, 20 Jul 2020 16:18:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=NqUD3oWYYvKgOBem6f0YKfQQNXJi3sq3iX8mwlyIEjo=; b=GGg1AB9uscq5Dc+PHlWTHUGipfep69I7+mTx270QcZWAEnjCMbIkfJaarrm+qW/8lf gcUkCGvZBbzCJwBQvkbidEKMs48/q6wXrRFCEzp4ZnVT1ufKlq+pMoYeMYTWLbvVIhKx PzMuabkCMhOxrcgn9DAjb/J7J4F9TeNFEzwxNRvjUv/jEZcMPAqen4qRkRN45OAff4s4 NEDp2F6Hwpq3OtMQpN2wqdy1OE7TE67sCqtVdjW8AEEDZ/Dl17ezw4yQs55ufAMla5a0 L8wMKWSKqh9SzPzISehlS4PXXR44ASCLuG3pbZvqSHUbCIUE7E8AlZgYe95d+3vgwQjn hjlQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=NqUD3oWYYvKgOBem6f0YKfQQNXJi3sq3iX8mwlyIEjo=; b=mYkh890V/1rZeSBx7wYNn9ola3UFE7zREScBAOlIHRvdCIFj0NGf4PLT0n/gtmKyP4 l0qkZ/CmL8+B9ZClYV1sOLIyKWI9GYhIcI1FgwrFurUhtFM0shUHTs4isTgIRSgJdMTh cNWat3xx5qLiYeltvoml0rFKr90NKnMzbKjY8qbuOZRqrXhW88SNP60ZGFv9MlcnGc9b ZHAaQdpXbepYOP0BWKm8owAMX9wBovxYxLy/tgy1cGqTyU82rfZGrre7Pw/i84YSZ+X9 tIRALzdkNyexHMB+2oB4TwxGIz1b5sZpmStJn4fO6Dzti0vIB9eHYqX3uozMR1hMFhFs grVA== X-Gm-Message-State: AOAM530Eh09q+KN0lH7XfvFUSA0xR7NH3HMgORlXMOwNUDoo29heSdmZ XqLONntQyONHBplmelQzAwfkMraPqBWK7oRqZCQ= X-Google-Smtp-Source: ABdhPJye5BuMtr6ZeOp76WhdiMbU5n04Hc8y78CkIg+0V6ebRmxjAfD9NJoVa8MmOkHsmu0ulTlJaQUa+YcUJ2NlHvY= X-Received: by 2002:ac2:51c6:: with SMTP id u6mr11401020lfm.123.1595287114556; Mon, 20 Jul 2020 16:18:34 -0700 (PDT) MIME-Version: 1.0 References: <20200127221705.GB17622@pfrc.org> <20200616211057.GA21373@pfrc.org> <20200720213734.GC25102@pfrc.org> In-Reply-To: <20200720213734.GC25102@pfrc.org> From: Greg Mirsky Date: Mon, 20 Jul 2020 16:18:23 -0700 Message-ID: Subject: Re: BFD for vxlan Destination MAC field (was Re: draft-ietf-bfd-vxlan IESG status) To: Jeffrey Haas Cc: Donald Eastlake , The IESG , bfd-chairs@ietf.org, draft-ietf-bfd-vxlan@ietf.org, rtg-bfd WG Content-Type: multipart/mixed; boundary="000000000000c7471505aae7b988" Archived-At: X-Mailman-Approved-At: Mon, 20 Jul 2020 16:32:37 -0700 X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 20 Jul 2020 23:18:41 -0000 --000000000000c7471505aae7b988 Content-Type: multipart/alternative; boundary="000000000000c7471305aae7b986" --000000000000c7471305aae7b986 Content-Type: text/plain; charset="UTF-8" Hi Jeff, et al., attached please find the new working version of BFD over VXLAN and its diff to -13. Please let me know if you have any questions. Regards, Greg On Mon, Jul 20, 2020 at 2:26 PM Jeffrey Haas wrote: > On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote: > > >> Proposed solution: A MAC value should be chosen that is well known > and the > > >> text would become: > > >> > > >> "Destination MAC: A Management VNI, which does not have any tenants, > will > > >> have no dedicated MAC address for decapsulated traffic. The value > > >> X:X:X:X:X > > >> SHOULD be used in this field." > > >> > > >> SHOULD might need to be MUST. Since a partial motivation for > permitting > > >> the > > >> flexibility in the specification to NOT use the management VNI is > desired= > > > , > > >> MUST might be inappropriate. > > >> > > > GIM>> Accepted the suggested text. I agree that the flexibility to not > use > > > the Management VNI is permitted in the specification and thus SHOULD > in the > > > text is consistent with that scenario. How would we pick the MAC > address? > > > > I am out of my area of expertise and I was hoping someone in the IESG > can offer a fix. :-) I am copying Donald Eastlake since he's the > designated expert for the IANA MAC address block. > > > > Donald, review of the thread may be useful, but tersely the need is to > have a well known MAC address that can be placed in this vxlan PDU that is > literally a placeholder of "not to be used for forwarding". The packet > arrives at the endpoint and, if not immediately accepted, would be dropped. > > > > If there is no well known MAC that could be used for such a behavior, > perhaps an address from the IANA block may be used? > > > > While I suspect the IANA mac documentation range could be used, IANA may > not appreciate that. > > Donald is not responding to emails. Considering I've been similarly bad > about responding, that's forgivable. However, in the interest of advancing > the document, I'd like to make a proposal. > > https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml > > Proposed text: > > : Destination MAC: A Management VNI, which does not have any tenants, will > : have no dedicated MAC address for decapsulated traffic. The value > : [TBD1] SHOULD be used in this field. > : > : IANA Considerations: > : > : IANA is requested to assign a single MAC address to the value TBD1 from > the > : "IANA Unicast 48-bit MAC Address" registry from the "Unassigned (small > : allocations)" block. The Usage field will be "BFD for vxlan" with a > : Reference field of this document. > > > > -- Jeff > --000000000000c7471305aae7b986 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff, et al.,
attached please find the new working = version of BFD over VXLAN and its diff to -13.
Please let me know= =C2=A0if you have any questions.

Regards,
Greg

On Mon, Jul 20, 2020 at 2:26 PM Jeffrey Haas <jhaas@pfrc.org> wrote:
On Wed, Jun 17, 2020 at 03:52:14PM -0400,= Jeffrey Haas wrote:
> >> Proposed solution: A MAC value should be chosen that is well = known and the
> >> text would become:
> >>
> >> "Destination MAC: A Management VNI, which does not have = any tenants, will
> >> have no dedicated MAC address for decapsulated traffic.=C2=A0= The value
> >> X:X:X:X:X
> >> SHOULD be used in this field."
> >>
> >> SHOULD might need to be MUST.=C2=A0 Since a partial motivatio= n for permitting
> >> the
> >> flexibility in the specification to NOT use the management VN= I is desired=3D
> > ,
> >> MUST might be inappropriate.
> >>
> > GIM>> Accepted the suggested text. I agree that the flexibi= lity to not use
> > the Management VNI is permitted in the specification and thus SHO= ULD in the
> > text is consistent with that scenario. How would we pick the MAC = address?
>
> I am out of my area of expertise and I was hoping someone in the IESG = can offer a fix. :-)=C2=A0 I am copying Donald Eastlake since he's the = designated expert for the IANA MAC address block.
>
> Donald, review of the thread may be useful, but tersely the need is to= have a well known MAC address that can be placed in this vxlan PDU that is= literally a placeholder of "not to be used for forwarding".=C2= =A0 The packet arrives at the endpoint and, if not immediately accepted, wo= uld be dropped.
>
> If there is no well known MAC that could be used for such a behavior, = perhaps an address from the IANA block may be used?
>
> While I suspect the IANA mac documentation range could be used, IANA m= ay not appreciate that.

Donald is not responding to emails.=C2=A0 Considering I've been similar= ly bad
about responding, that's forgivable.=C2=A0 However, in the interest of = advancing
the document, I'd like to make a proposal.

https://www.iana.org/assignm= ents/ethernet-numbers/ethernet-numbers.xhtml

Proposed text:

: Destination MAC: A Management VNI, which does not have any tenants, will<= br> : have no dedicated MAC address for decapsulated traffic.=C2=A0 The value : [TBD1] SHOULD be used in this field.
:
: IANA Considerations:
:
: IANA is requested to assign a single MAC address to the value TBD1 from t= he
: "IANA Unicast 48-bit MAC Address" registry from the "Unass= igned (small
: allocations)" block.=C2=A0 The Usage field will be "BFD for vxl= an" with a
: Reference field of this document.



-- Jeff
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required=5 tests=[BAYES_00=-1.9, 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 By5CKrOZs6np for ; Mon, 20 Jul 2020 17:38:14 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id CDCC23A1227 for ; Mon, 20 Jul 2020 17:38:14 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id A563A1E342; Mon, 20 Jul 2020 20:48:57 -0400 (EDT) Date: Mon, 20 Jul 2020 20:48:57 -0400 From: Jeffrey Haas To: Mahesh Jethanandani Cc: rtg-bfd@ietf.org Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Message-ID: <20200721004857.GB31779@pfrc.org> References: <159466724499.14803.15233027731222579839@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: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Jul 2020 00:38:16 -0000 Mahesh, While reviewing version -10, I had the following questions: For the state machine changes, in the Init->Init state, we have NULL auth. While this is a "boring" transition, it's also happening at a very slow part of the state machine; timers should be once a second. Is there a strong argument to use NULL here? In section 3: : Sequence Number: The sequence number for this packet. Implementation : may use sequence numbers (bfd.XmitAuthSeq) as defined in BFD : [RFC5880], or secure sequence numbers as defined in Secure BFD : Sequence Numbers [I-D.ietf-bfd-secure-sequence-numbers]. In the core BFD spec, it distinguishes between occasional and meticulous modes and uses different code points to determine what you do. I suspect your intent is that we always use meticulous mode here? -- Jeff On Mon, Jul 13, 2020 at 01:56:14PM -0700, Mahesh Jethanandani 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 WG of the IETF. > > > > Title : Optimizing BFD Authentication > > Authors : Mahesh Jethanandani > > Ashesh Mishra > > Ankur Saxena > > Manav Bhatia > > Filename : draft-ietf-bfd-optimizing-authentication-10.txt > > Pages : 8 > > Date : 2020-07-13 > > > > Abstract: > > This document describes an optimization to BFD Authentication as > > described in Section 6.7 of BFD RFC 5880. This document updates RFC > > 5880. 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([2601:647:5600:5020:5112:8afe:15de:4a73]) by smtp.gmail.com with ESMTPSA id y198sm18322169pfg.116.2020.07.20.18.28.47 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Jul 2020 18:28:47 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.6\)) Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt From: Mahesh Jethanandani In-Reply-To: <20200721004857.GB31779@pfrc.org> Date: Mon, 20 Jul 2020 18:28:46 -0700 Cc: "rtg-bfd@ietf. org" Content-Transfer-Encoding: quoted-printable Message-Id: <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.com> References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> To: Jeffrey Haas X-Mailer: Apple Mail (2.3445.9.6) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Jul 2020 01:28:50 -0000 Hi Jeff, > On Jul 20, 2020, at 5:48 PM, Jeffrey Haas wrote: >=20 > Mahesh, >=20 > While reviewing version -10, I had the following questions: >=20 > For the state machine changes, in the Init->Init state, we have NULL = auth. > While this is a "boring" transition, it's also happening at a very = slow part > of the state machine; timers should be once a second. Is there a = strong > argument to use NULL here? Not particularly. The reason to choose NULL was because of the (limited) = impact it would have. But if the WG feels otherwise, I can change it to = Auth. >=20 > In section 3: > : Sequence Number: The sequence number for this packet. = Implementation > : may use sequence numbers (bfd.XmitAuthSeq) as defined in BFD > : [RFC5880], or secure sequence numbers as defined in Secure BFD > : Sequence Numbers [I-D.ietf-bfd-secure-sequence-numbers]. >=20 > In the core BFD spec, it distinguishes between occasional and = meticulous > modes and uses different code points to determine what you do. I = suspect > your intent is that we always use meticulous mode here? Yes, the intent was meticulous. I can clarify that. >=20 > -- Jeff >=20 >=20 > On Mon, Jul 13, 2020 at 01:56:14PM -0700, Mahesh Jethanandani 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 = WG of the IETF. >>>=20 >>> Title : Optimizing BFD Authentication >>> Authors : Mahesh Jethanandani >>> Ashesh Mishra >>> Ankur Saxena >>> Manav Bhatia >>> Filename : = draft-ietf-bfd-optimizing-authentication-10.txt >>> Pages : 8 >>> Date : 2020-07-13 >>>=20 >>> Abstract: >>> This document describes an optimization to BFD Authentication as >>> described in Section 6.7 of BFD RFC 5880. This document updates = RFC >>> 5880. >=20 >=20 Mahesh Jethanandani mjethanandani@gmail.com From nobody Wed Jul 22 05:28:19 2020 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 1566A3A0AE6; Wed, 22 Jul 2020 05:28:14 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit From: =?utf-8?q?=C3=89ric_Vyncke_via_Datatracker?= To: "The IESG" Cc: draft-ietf-bfd-vxlan@ietf.org, bfd-chairs@ietf.org, rtg-bfd@ietf.org, Jeffrey Haas , jhaas@pfrc.org Subject: =?utf-8?q?=C3=89ric_Vyncke=27s_Abstain_on_draft-ietf-bfd-vxlan-13=3A_=28with_COMMENT=29?= X-Test-IDTracker: no X-IETF-IDTracker: 7.9.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: =?utf-8?q?=C3=89ric_Vyncke?= Message-ID: <159542089363.28188.3286555767171732447@ietfa.amsl.com> Date: Wed, 22 Jul 2020 05:28:14 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Jul 2020 12:28:14 -0000 Éric Vyncke has entered the following ballot position for draft-ietf-bfd-vxlan-13: Abstain When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- Thank you for the work put into this document and its update. I have cleared one of my DISCUSS point about TTL = Hop Limit not being 255. But, the authors and I are in an impasse about the use of IPv4-mapped IPv6 addresses but I do not want to block the document. I change my ballot to "ABSTAIN" in the sense of "I oppose this document but understand that others differ and am not going to stand in the way of the others". BTW, I understood that the use a prefix rather than /32 or /128 was to allow for entropy (to explore multiple ECMP/LAG paths). BTW2, the right wording is "IPv4-mapped IPv6 address" and not "IPv4-mapped IPv4 address" as written twice in the document. Did you (or actually the authors) also investigate the use of the: - ::/0 : unspecified address - 100::/8 the discard prefix used for RTBH RFC 6666 - or even requesting a block out of the 2001::/23 (reserved for IETF special use) Previous COMMENTs for archive as they were on revision -09 RFC 5881 (BFD) states that it applies to IPv4/IPv6 tunnels, may I infer that this document is only required to address the Ethernet encapsulation ? I.e. specifying the Ethernet MAC addresses? -- Section 3 -- At first sight, I was surprized by having a BFD session per VXLAN VNI as it will create some scalability issue, but, I assume that this is to detect misconfiguration as well. If so, perhaps worth mentionnig the reasoning behind? In "the inner destination IP address SHOULD" it is unclear whether it is in the all BFD packets, or only the request one or ... ? -- Section 4 -- While probably defined in RFC7348, should "FCS" be renamed as "Outer Ethernet FCS" for consistency with the "Outer Ethernet Header" in figure 2 ? Why not using the Source MAC address as the Destination MAC address ? This would ensure that there is no conflict at the expense of "forcing" the transmission of the frame even if addressed to itself. Please consider rewriting the section about TTL/Hop Limit as it is not easy to parse/read. -- Section 9 -- This section is mainly about IPv4 (RFC 1812). Please address IPv6 as well in the explanation of packet not being forwarding when addressed to 127/8 From nobody Wed Jul 22 09:20:04 2020 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 DD21A3A0A80; Wed, 22 Jul 2020 09:19:55 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, 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 8sxyaY0GpsDE; Wed, 22 Jul 2020 09:19:54 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 63CC93A0A6A; Wed, 22 Jul 2020 09:19:54 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id 370411E2F9; Wed, 22 Jul 2020 12:30:43 -0400 (EDT) Date: Wed, 22 Jul 2020 12:30:43 -0400 From: Jeffrey Haas To: =?iso-8859-1?Q?=C9ric?= Vyncke Cc: The IESG , draft-ietf-bfd-vxlan@ietf.org, bfd-chairs@ietf.org, rtg-bfd@ietf.org Subject: Re: =?iso-8859-1?Q?=C9ric_Vyncke'?= =?iso-8859-1?Q?s?= Abstain on draft-ietf-bfd-vxlan-13: (with COMMENT) Message-ID: <20200722163042.GB6821@pfrc.org> References: <159542089363.28188.3286555767171732447@ietfa.amsl.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <159542089363.28188.3286555767171732447@ietfa.amsl.com> User-Agent: Mutt/1.5.21 (2010-09-15) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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 Jul 2020 16:19:56 -0000 Éric, On Wed, Jul 22, 2020 at 05:28:14AM -0700, Éric Vyncke via Datatracker wrote: > Éric Vyncke has entered the following ballot position for > draft-ietf-bfd-vxlan-13: Abstain > [...] > ---------------------------------------------------------------------- > COMMENT: > ---------------------------------------------------------------------- > > Thank you for the work put into this document and its update. I have cleared > one of my DISCUSS point about TTL = Hop Limit not being 255. > > But, the authors and I are in an impasse about the use of IPv4-mapped IPv6 > addresses but I do not want to block the document. I change my ballot to > "ABSTAIN" in the sense of "I oppose this document but understand that others > differ and am not going to stand in the way of the others". Thank you. This will let us continue toward broader IETF review. > BTW, I understood that the use a prefix rather than /32 or /128 was to allow > for entropy (to explore multiple ECMP/LAG paths). This is one possible case, but primarily it is to let the receiving application have something they can internally "catch" in their packet intercept code. Many router vendors implement unusual things in the loopback network range. > BTW2, the right wording is > "IPv4-mapped IPv6 address" and not "IPv4-mapped IPv4 address" as written twice > in the document. As noted in a separate thread, we'll address that correction. > Did you (or actually the authors) also investigate the use of the: This is my personal comment; the authors are requested to comment as well. > - ::/0 : unspecified address This often interacts oddly with socket libraries and likely would not be as portable as one might want. > - 100::/8 the discard prefix used for RTBH RFC 6666 > - or even requesting a block out of the 2001::/23 (reserved for IETF special > use) As you comment in your private reply, the desire is that we never see the prefix in question in routing. The loopback network property encodes that semantic quite nicely - it's completely local to the box in question. --- I believe that when this thread concludes, we will have closed on last of the open issues. Once Greg has done the necessary updates to pull in the last few issues, I'll update the shepherd report and resubmit to the IESG. 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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 HHpHrjbtJcI9 for ; Wed, 22 Jul 2020 19:31:13 -0700 (PDT) Received: from mail-io1-xd36.google.com (mail-io1-xd36.google.com [IPv6:2607:f8b0:4864:20::d36]) (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 4FE233A0855 for ; Wed, 22 Jul 2020 19:31:13 -0700 (PDT) Received: by mail-io1-xd36.google.com with SMTP id e64so4704644iof.12 for ; Wed, 22 Jul 2020 19:31:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=gHnk9eUC2XyLgYaJbUqHI3falNbVAYqGwbqM9okz9cc=; b=YV3U+N0qKIfOSPNC6x2NGAfeDhhP7mY+pkkvRrUovstVW+wD0wYIviXtC4lXyNMYwf nm6rRLFmYBMrD/dVCqfezXBxY0aOtzVkR1mzhdoOkMguA7mflFMAHLj64sq7tqt//iQ0 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ABdhPJy8296PtUFEBD+OW4GYpjcUuaOGAjZb91y+H4wxnWn30feRh4eMI6wjeNL0qU0KbbPgC1sdWsK/WMjgkuntM8c= X-Received: by 2002:a5d:8143:: with SMTP id f3mr2723950ioo.157.1595471472556; Wed, 22 Jul 2020 19:31:12 -0700 (PDT) MIME-Version: 1.0 References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.com> In-Reply-To: From: Manav Bhatia Date: Thu, 23 Jul 2020 08:01:01 +0530 Message-ID: Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt To: "Reshad Rahman (rrahman)" Cc: Mahesh Jethanandani , Jeffrey Haas , "rtg-bfd@ietf. org" Content-Type: multipart/alternative; boundary="0000000000005efcfe05ab12a6be" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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 Jul 2020 02:31:15 -0000 --0000000000005efcfe05ab12a6be Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable GIven that there isnt a huge advantage in using Auth during INIT -> INIT and Down -> Down we should probably stick to NULL for the sake of simplicity. Unless, somebody finds a problem with using NULL. Cheers, Manav On Thu, Jul 23, 2020 at 6:32 AM Reshad Rahman (rrahman) wrote: > Hi Mahesh and Jeff, > > =EF=BB=BFOn 2020-07-20, 9:29 PM, "Rtg-bfd on behalf of Mahesh Jethanandan= i" < > rtg-bfd-bounces@ietf.org on behalf of mjethanandani@gmail.com> wrote: > > Hi Jeff, > > > On Jul 20, 2020, at 5:48 PM, Jeffrey Haas wrote: > > > > Mahesh, > > > > While reviewing version -10, I had the following questions: > > > > For the state machine changes, in the Init->Init state, we have NUL= L > auth. > > While this is a "boring" transition, it's also happening at a very > slow part > > of the state machine; timers should be once a second. Is there a > strong > > argument to use NULL here? > > Not particularly. The reason to choose NULL was because of the > (limited) impact it would have. But if the WG feels otherwise, I can chan= ge > it to Auth. > I don't have a strong opinion on this yet. But if we change > INIT->INIT to be Auth, we should be consistent and change Down->Down to > Auth too? > > Regards, > Reshad. > > > > > In section 3: > > : Sequence Number: The sequence number for this packet. > Implementation > > : may use sequence numbers (bfd.XmitAuthSeq) as defined in BFD > > : [RFC5880], or secure sequence numbers as defined in Secure BFD > > : Sequence Numbers [I-D.ietf-bfd-secure-sequence-numbers]. > > > > In the core BFD spec, it distinguishes between occasional and > meticulous > > modes and uses different code points to determine what you do. I > suspect > > your intent is that we always use meticulous mode here? > > Yes, the intent was meticulous. I can clarify that. > > > > > -- Jeff > > > > > > On Mon, Jul 13, 2020 at 01:56:14PM -0700, Mahesh Jethanandani wrote= : > >>> A New Internet-Draft is available from the on-line Internet-Draft= s > directories. > >>> This draft is a work item of the Bidirectional Forwarding > Detection WG of the IETF. > >>> > >>> Title : Optimizing BFD Authentication > >>> Authors : Mahesh Jethanandani > >>> Ashesh Mishra > >>> Ankur Saxena > >>> Manav Bhatia > >>> Filename : > draft-ietf-bfd-optimizing-authentication-10.txt > >>> Pages : 8 > >>> Date : 2020-07-13 > >>> > >>> Abstract: > >>> This document describes an optimization to BFD Authentication as > >>> described in Section 6.7 of BFD RFC 5880. This document updates > RFC > >>> 5880. > > > > > > Mahesh Jethanandani > mjethanandani@gmail.com > > > > > --0000000000005efcfe05ab12a6be Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
GIven that there isnt=C2=A0a huge advantage in using = Auth during INIT -> INIT and Down -> Down we should probably stick to= NULL for the sake of simplicity. Unless, somebody finds a problem with usi= ng NULL.

Cheers, Manav

On Thu, Jul 23, 2020 at 6:32= AM Reshad Rahman (rrahman) <rrahman=3D40cisco.com@dmarc.ietf.org> wrote:
Hi Mahesh and Jeff,

=EF=BB=BFOn 2020-07-20, 9:29 PM, "Rtg-bfd on behalf of Mahesh Jethanan= dani" <rtg-bfd-bounces@ietf.org on behalf of mjethanandani@gmail.com> wrote:

=C2=A0 =C2=A0 Hi Jeff,

=C2=A0 =C2=A0 > On Jul 20, 2020, at 5:48 PM, Jeffrey Haas <jhaas@pfrc.org> wrote:
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > Mahesh,
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > While reviewing version -10, I had the following questio= ns:
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > For the state machine changes, in the Init->Init stat= e, we have NULL auth.
=C2=A0 =C2=A0 > While this is a "boring" transition, it's = also happening at a very slow part
=C2=A0 =C2=A0 > of the state machine; timers should be once a second.=C2= =A0 Is there a strong
=C2=A0 =C2=A0 > argument to use NULL here?

=C2=A0 =C2=A0 Not particularly. The reason to choose NULL was because of th= e (limited) impact it would have. But if the WG feels otherwise, I can chan= ge it to Auth.
<RR> I don't have a strong opinion on this yet. But if we change = INIT->INIT to be Auth, we should be consistent and change Down->Down = to Auth too?

Regards,
Reshad.

=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > In section 3:
=C2=A0 =C2=A0 > :=C2=A0 =C2=A0Sequence Number: The sequence number for t= his packet.=C2=A0 Implementation
=C2=A0 =C2=A0 > :=C2=A0 =C2=A0may use sequence numbers (bfd.XmitAuthSeq)= as defined in BFD
=C2=A0 =C2=A0 > :=C2=A0 =C2=A0[RFC5880], or secure sequence numbers as d= efined in Secure BFD
=C2=A0 =C2=A0 > :=C2=A0 =C2=A0Sequence Numbers [I-D.ietf-bfd-secure-sequ= ence-numbers].
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > In the core BFD spec, it distinguishes between occasiona= l and meticulous
=C2=A0 =C2=A0 > modes and uses different code points to determine what y= ou do.=C2=A0 I suspect
=C2=A0 =C2=A0 > your intent is that we always use meticulous mode here?<= br>
=C2=A0 =C2=A0 Yes, the intent was meticulous. I can clarify that.

=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > -- Jeff
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 > On Mon, Jul 13, 2020 at 01:56:14PM -0700, Mahesh Jethana= ndani wrote:
=C2=A0 =C2=A0 >>> A New Internet-Draft is available from the on-li= ne Internet-Drafts directories.
=C2=A0 =C2=A0 >>> This draft is a work item of the Bidirectional F= orwarding Detection WG of the IETF.
=C2=A0 =C2=A0 >>>
=C2=A0 =C2=A0 >>>=C2=A0 =C2=A0 =C2=A0 =C2=A0Title=C2=A0 =C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0: Optimizing BFD Authentication
=C2=A0 =C2=A0 >>>=C2=A0 =C2=A0 =C2=A0 =C2=A0Authors=C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0: Mahesh Jethanandani
=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=A0Ashesh Mishra
=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=A0Ankur Saxena
=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=A0Manav Bhatia
=C2=A0 =C2=A0 >>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Filename=C2=A0 = =C2=A0 =C2=A0 =C2=A0 : draft-ietf-bfd-optimizing-authentication-10.txt
=C2=A0 =C2=A0 >>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Pages=C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: 8
=C2=A0 =C2=A0 >>>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Date=C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 2020-07-13
=C2=A0 =C2=A0 >>>
=C2=A0 =C2=A0 >>> Abstract:
=C2=A0 =C2=A0 >>>=C2=A0 This document describes an optimization to= BFD Authentication as
=C2=A0 =C2=A0 >>>=C2=A0 described in Section 6.7 of BFD RFC 5880.= =C2=A0 This document updates RFC
=C2=A0 =C2=A0 >>>=C2=A0 5880.
=C2=A0 =C2=A0 >
=C2=A0 =C2=A0 >

=C2=A0 =C2=A0 Mahesh Jethanandani
=C2=A0 =C2=A0 = mjethanandani@gmail.com




--0000000000005efcfe05ab12a6be-- From nobody Thu Jul 23 06:59:37 2020 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 2CDFD3A0143 for ; Thu, 23 Jul 2020 06:59:36 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001] autolearn=unavailable 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 7VJsj8pccv3M for ; Thu, 23 Jul 2020 06:59:35 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id EF6FC3A03FA for ; Thu, 23 Jul 2020 06:59:34 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id DBC301E2FB; Thu, 23 Jul 2020 10:10:24 -0400 (EDT) Date: Thu, 23 Jul 2020 10:10:24 -0400 From: Jeffrey Haas To: Manav Bhatia Cc: "Reshad Rahman (rrahman)" , Mahesh Jethanandani , "rtg-bfd@ietf. org" Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Message-ID: <20200723141024.GC6821@pfrc.org> References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.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: 2.1.29 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 Jul 2020 13:59:36 -0000 Manav, On Thu, Jul 23, 2020 at 08:01:01AM +0530, Manav Bhatia wrote: > GIven that there isnt a huge advantage in using Auth during INIT -> INIT > and Down -> Down we should probably stick to NULL for the sake of > simplicity. Unless, somebody finds a problem with using NULL. Part of the reason I flagged this point is that I expect commentary during IESG review. This conversation was the forcing function to determine "no, we think extra authentication here is really useless even with slower timers". -- Jeff From nobody Thu Jul 23 07:49:41 2020 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 63FF83A0803 for ; Thu, 23 Jul 2020 07:49:39 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, 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 renkNmB6BCzV for ; Thu, 23 Jul 2020 07:49:38 -0700 (PDT) Received: from mail-il1-x133.google.com (mail-il1-x133.google.com [IPv6:2607:f8b0:4864:20::133]) (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 EBA3A3A0801 for ; Thu, 23 Jul 2020 07:49:37 -0700 (PDT) Received: by mail-il1-x133.google.com with SMTP id o3so4503728ilo.12 for ; Thu, 23 Jul 2020 07:49:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=1HdJtl8M7SOC063d14Bv9JUV920XvxqWpEGBenA6P10=; b=TOMuBOyEjDtUd8Wm1gUMCdq8RFR9lNpRYG42hxm7l61buf+XMyFpY5ebOtEH3fP+U+ AjK5VwN+IdxFnCngsBmQKcZX2j8EhM1ftGr0l6iNblIFeMtYwpIJufpd216sAwVVWkLG 5E5JAHHLgm5/LwxR6PGox23njjHTyw45BBaAaO103GMpJn+OI8L1CZXw2RWD7OrC3BGg COLGxMx2BG7CM+4mhsAl3k5zAjXEDvnEG8VoMQp6GiG42ME2DZmgPNt67fJ08N+gVRa3 sYa9sYoXFDiGTZigD6V0w6PnJXFp97nUhDjYuqBtPIQ/QiTbX1beA37iz91Y0EAjScqt bl6w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=1HdJtl8M7SOC063d14Bv9JUV920XvxqWpEGBenA6P10=; b=KNgmZ2a5UIE1X0Rvr+5Au5Q1oQ9LBRrg4i/WRFalBG3ib8IqDAbrj49hXKGwUuCyuq 4ztwokBd21SZ2q/qioWROg7pzikR7048e2veffR98oohyhVOLzcFoCC+oDc3pQMePoUy fALbAX8VwuA03omO1PPiC9Q2Dc0fiuM/PIxShx8TxVOVVFlDGbVq0R9w7g6BCVswxT3i bmjKRGz9RC60Q4+Yg9eT2futCbHcFyE6iXv38PeIiLaECTStTu7j6q1Dt8ghvgfDMCQ1 WcP3qtyQaji7x4BE6mjofQ2HXOQLbXeZnW7m3oIc3hp1WoniGb3F6LGggCDDDs3hmdpU nvAQ== X-Gm-Message-State: AOAM5307g4QFEBo706xWK2J4SlftNMYMWHS8LshKHuGdEfXJ30PXgZCk yekeInEJIftnenTPyW135MDKGOQPOZ1/gdGGsjA= X-Google-Smtp-Source: ABdhPJw4BjVfRyOZlTcwR49CAeAfOHyvF8pQJRCmL2mIZBi57xlAdSE1srQ9pAUsOyXtetLeXF1eNjIq+/3FSW1l950= X-Received: by 2002:a05:6e02:e02:: with SMTP id a2mr2848773ilk.231.1595515777185; Thu, 23 Jul 2020 07:49:37 -0700 (PDT) MIME-Version: 1.0 References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.com> <20200723141024.GC6821@pfrc.org> In-Reply-To: <20200723141024.GC6821@pfrc.org> From: Manav Bhatia Date: Thu, 23 Jul 2020 20:19:26 +0530 Message-ID: Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt To: Jeffrey Haas Cc: "Reshad Rahman (rrahman)" , Mahesh Jethanandani , "rtg-bfd@ietf. org" Content-Type: multipart/alternative; boundary="00000000000021fee305ab1cf792" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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 Jul 2020 14:49:40 -0000 --00000000000021fee305ab1cf792 Content-Type: text/plain; charset="UTF-8" Hi Jeff, I am sorry I dont understand this point. I would like to stick to NULL because it's less prone to implementation/inter-op bugs where you dont need to keep changing the kind of auth you use depending upon where you are in your finite state machine (FSM). And moreover, doing an AUTH adds no security to the protocol. Cheers, Manav On Thu, Jul 23, 2020 at 7:29 PM Jeffrey Haas wrote: > Manav, > > On Thu, Jul 23, 2020 at 08:01:01AM +0530, Manav Bhatia wrote: > > GIven that there isnt a huge advantage in using Auth during INIT -> INIT > > and Down -> Down we should probably stick to NULL for the sake of > > simplicity. Unless, somebody finds a problem with using NULL. > > Part of the reason I flagged this point is that I expect commentary during > IESG review. This conversation was the forcing function to determine "no, > we think extra authentication here is really useless even with slower > timers". > > -- Jeff > --00000000000021fee305ab1cf792 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff,

I am sorry I dont u= nderstand this point.

I would like to stick to NUL= L because it's less prone to implementation/inter-op bugs where you don= t need to keep changing the kind of auth you use depending upon where you a= re in your finite state machine (FSM). And moreover, doing an AUTH adds no = security to the protocol.

Cheers, Manav

<= div class=3D"gmail_quote">
On Thu, Jul= 23, 2020 at 7:29 PM Jeffrey Haas <jha= as@pfrc.org> wrote:
Manav,

On Thu, Jul 23, 2020 at 08:01:01AM +0530, Manav Bhatia wrote:
> GIven that there isnt a huge advantage in using Auth during INIT ->= INIT
> and Down -> Down we should probably stick to NULL for the sake of > simplicity. Unless, somebody finds a problem with using NULL.

Part of the reason I flagged this point is that I expect commentary during<= br> IESG review.=C2=A0 This conversation was the forcing function to determine = "no,
we think extra authentication here is really useless even with slower
timers".

-- Jeff
--00000000000021fee305ab1cf792-- From nobody Thu Jul 23 08:45:45 2020 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 1F8953A0A43 for ; Thu, 23 Jul 2020 08:45:43 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -1.901 X-Spam-Level: X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001] autolearn=unavailable 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 M8niIH6Z2Raa for ; Thu, 23 Jul 2020 08:45:42 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id 496F53A0A0A for ; Thu, 23 Jul 2020 08:45:41 -0700 (PDT) Received: by slice.pfrc.org (Postfix, from userid 1001) id BDCC11E2FB; Thu, 23 Jul 2020 11:56:32 -0400 (EDT) Date: Thu, 23 Jul 2020 11:56:32 -0400 From: Jeffrey Haas To: Manav Bhatia Cc: "Reshad Rahman (rrahman)" , Mahesh Jethanandani , "rtg-bfd@ietf. org" Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Message-ID: <20200723155632.GA8728@pfrc.org> References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.com> <20200723141024.GC6821@pfrc.org> 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: 2.1.29 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 Jul 2020 15:45:43 -0000 Manav, On Thu, Jul 23, 2020 at 08:19:26PM +0530, Manav Bhatia wrote: > I am sorry I dont understand this point. > > I would like to stick to NULL because it's less prone to > implementation/inter-op bugs where you dont need to keep changing the kind > of auth you use depending upon where you are in your finite state machine > (FSM). And moreover, doing an AUTH adds no security to the protocol. The premise of the draft is that more expensive ciphers are expensive AT RATE AND SCALE. Init and Down sessions are 1pps. The rate portion of the argument is no longer a point of concern. I agree that it adds no additional security per our analysis. However, I expect this dialog to happen with the security ADs. Their typical answer is "if you could secure it, you should". If they don't start this conversation, we're done. :-) -- Jeff From nobody Thu Jul 23 08:53:17 2020 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 D62723A0AAD for ; Thu, 23 Jul 2020 08:53:14 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -9.62 X-Spam-Level: X-Spam-Status: No, score=-9.62 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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 header.b=e7tS9VsW; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=UYV3QXIS 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 JyIRNfNT0VZT for ; 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Thu, 23 Jul 2020 15:53:03 +0000 From: "Reshad Rahman (rrahman)" To: Jeffrey Haas , Manav Bhatia CC: Mahesh Jethanandani , "rtg-bfd@ietf. org" Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Thread-Topic: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Thread-Index: AQHWWUj8estRbnwSu0OXwm1uDoRSlKkF/YUAgAtBV4CAAAsgAIAC2f0AgABcEYCAAMNnAIAACugAgAASwAD//7v1AA== Date: Thu, 23 Jul 2020 15:53:03 +0000 Message-ID: <4C927D8D-3851-4CBE-8A14-FB1ED0059DF0@cisco.com> References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.com> <20200723141024.GC6821@pfrc.org> <20200723155632.GA8728@pfrc.org> In-Reply-To: <20200723155632.GA8728@pfrc.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/16.37.20051002 authentication-results: pfrc.org; dkim=none (message not signed) header.d=none;pfrc.org; dmarc=none action=none header.from=cisco.com; 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Thu, 23 Jul 2020 08:59:00 -0700 (PDT) MIME-Version: 1.0 References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <20200721004857.GB31779@pfrc.org> <2C632683-57D0-4E40-809E-6A907B38CDB5@gmail.com> <20200723141024.GC6821@pfrc.org> <20200723155632.GA8728@pfrc.org> <4C927D8D-3851-4CBE-8A14-FB1ED0059DF0@cisco.com> In-Reply-To: <4C927D8D-3851-4CBE-8A14-FB1ED0059DF0@cisco.com> From: Manav Bhatia Date: Thu, 23 Jul 2020 21:28:49 +0530 Message-ID: Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt To: "Reshad Rahman (rrahman)" Cc: Jeffrey Haas , Mahesh Jethanandani , "rtg-bfd@ietf. org" Content-Type: multipart/alternative; boundary="00000000000050858505ab1defee" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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 Jul 2020 15:59:03 -0000 --00000000000050858505ab1defee Content-Type: text/plain; charset="UTF-8" I would respond to that if saying "Only secure it, if you need to" :-) Cheers, Manav On Thu, Jul 23, 2020 at 9:23 PM Reshad Rahman (rrahman) wrote: > They most likely will ( > > I agree that it adds no additional security per our analysis. > However, I > expect this dialog to happen with the security ADs. Their typical > answer is > "if you could secure it, you should". > > If they don't start this conversation, we're done. :-) > > -- Jeff > > --00000000000050858505ab1defee Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I would respond to that if saying "Only secure it, if= you need to" :-)

Cheers, Manav

On Thu, Jul 23= , 2020 at 9:23 PM Reshad Rahman (rrahman) <rrahman@cisco.com> wrote:
They most likely will (

=C2=A0 =C2=A0 I agree that it adds no additional security per our analysis.= =C2=A0 However, I
=C2=A0 =C2=A0 expect this dialog to happen with the security ADs.=C2=A0 The= ir typical answer is
=C2=A0 =C2=A0 "if you could secure it, you should".

=C2=A0 =C2=A0 If they don't start this conversation, we're done. :-= )

=C2=A0 =C2=A0 -- Jeff

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boundary="00000000000095208205ab30d3b6" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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 Jul 2020 14:31:24 -0000 --00000000000095208205ab30d3b6 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Reshad, Thanks again. I will address these comments. Thanks Santosh P K On Fri, Jul 24, 2020 at 8:13 AM Reshad Rahman (rrahman) wrote: > Hi Santosh, > > > > Thanks for addressing the comments. > > > > General: NULL authentication TLV is still used, should be replaced with > NULL authentication type or section as appropriate. > > Be consistent for Null v/s NULL (NULL Auth is used in > bfd-optimizing-authentication) > > > > Introduction > > s/detect lost packet/detect lost packets/ > > > > Section 3 Use Cases: > > s/any BFD packet loss if loss/any BFD packet loss if the loss/ > > s/BFD implementation/BFD implementations/ > > Where the text says =E2=80=9Cfailure of a link=E2=80=9D, might be better = to say =E2=80=9Cfailure > of a datapath=E2=80=9D? > > Informative references to CFM and TWAMP would be useful > > > > Section 4 > > =E2=80=9Cby appending the Null-Authentication type =E2=80=9C. Suggest =E2= =80=9Cby appending an authentication section with the NULL Authentication t= ype =E2=80=9C > > > > Section 5 > > =E2=80=9CBFD uses authentication TLV=E2=80=9D, suggest change to =E2=80= =9CBFD uses an > authentication section=E2=80=9D. > > > > =E2=80=9CBFD packets MUST include NULL-Auth TLV=E2=80=9D. Change to =E2= =80=9CBFD control packets > MUST include an authentication section with the NULL Authentication type= =E2=80=9D > > > > Section 5.1 > > > > =E2=80=9CThe first BFD NULL-Auth type processed by the receiver=E2=80=A6= =E2=80=9D. Change to =E2=80=9CThe first BFD authentication section with t= he NULL Authentication type, in a valid BFD control packet, processed by th= e receiver=E2=80=9D . > > Also, does it have to be NULL Auth, I believe it can be any auth with seq= uence number? If that=E2=80=99s the case change to =E2=80=9CThe first BFD = authentication section with a non-zero sequence number, in a valid BFD cont= rol packet, processed by the receiver is used for=E2=80=A6.=E2=80=9D. > > > > Regards, > > Reshad. > > > > *From: *Rtg-bfd on behalf of Santosh P K < > santosh.pallagatti@gmail.com> > *Date: *Sunday, July 19, 2020 at 4:06 PM > *To: *"rtg-bfd@ietf.org" > *Subject: *Fwd: New Version Notification for > draft-ietf-bfd-stability-06.txt > > > > Hello All, > > A new version of draft for BFD-stablity is here for review. Changes > include addressing shepherd comments as provided here. > https://datatracker.ietf.org/doc/draft-ietf-bfd-stability/shepherdwriteup= /. > Please also see attached diff. > > > > Thanks > > Santosh P K > > ---------- Forwarded message --------- > From: > Date: Mon, Jul 13, 2020 at 4:41 PM > Subject: New Version Notification for draft-ietf-bfd-stability-06.txt > To: Mach Chen , Ankur Saxena , > Peng Fan , Mahesh Jethanandani , > Ashesh Mishra , Santosh Pallagatti < > santosh.pallagatti@gmail.com> > > > > > A new version of I-D, draft-ietf-bfd-stability-06.txt > has been successfully submitted by Santosh Pallagatti and posted to the > IETF repository. > > Name: draft-ietf-bfd-stability > Revision: 06 > Title: BFD Stability > Document date: 2020-07-13 > Group: bfd > Pages: 6 > URL: > https://www.ietf.org/internet-drafts/draft-ietf-bfd-stability-06.txt > Status: https://datatracker.ietf.org/doc/draft-ietf-bfd-stability= / > Htmlized: https://tools.ietf.org/html/draft-ietf-bfd-stability-06 > Htmlized: > https://datatracker.ietf.org/doc/html/draft-ietf-bfd-stability > Diff: > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-stability-06 > > Abstract: > This document describes extensions to the Bidirectional Forwarding > Detection (BFD) protocol to measure BFD stability. Specifically, it > describes a mechanism for detection of BFD packet loss. > > > > > 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 > > --00000000000095208205ab30d3b6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Reshad,
=C2=A0 Thanks again. I will address these comm= ents.=C2=A0

Thanks
Santosh P K=C2=A0

On Fri, Jul 24, 2020 at 8:13 AM Reshad Rahman (rrahman) <rrahman@cisco.com> wrote:

Hi Santosh,

=C2=A0

Thanks for addressing the comme= nts.

=C2=A0

General: NULL authentication TL= V is still used, should be replaced with NULL authentication type or sectio= n as appropriate.

Be consistent for Null v/s NULL= (NULL Auth is used in bfd-optimizing-authentication)<= /p>

=C2=A0

Introduction

s/detect lost packet/detect los= t packets/

=C2=A0

Section 3 Use Cases: =

s/any BFD packet loss if loss/a= ny BFD packet loss if the loss/

s/BFD implementation/BFD implem= entations/

Where the text says =E2=80=9Cfa= ilure of a link=E2=80=9D, might be better to say =E2=80=9Cfailure of a data= path=E2=80=9D?

Informative references to CFM a= nd TWAMP would be useful

=C2=A0

Section 4<= /p> 

=E2=80=9Cby appending the Null-Authentication type =E2=80=9C. =
Suggest =E2=80=9Cby appending an authentication section with the NULL Authe=
ntication type =E2=80=9C

=C2=A0

Section 5<= /p>

=E2=80=9CBFD uses authenticatio= n TLV=E2=80=9D, suggest change to =E2=80=9CBFD uses an authentication secti= on=E2=80=9D.

=C2=A0

=E2=80=9CBFD packets MUST inclu= de NULL-Auth TLV=E2=80=9D. Change to =E2=80=9CBFD control packets MUST incl= ude an authentication section with the NULL Authentication type=E2=80=9D=

=C2=A0

Section 5.1

=C2=A0

=E2=80=9CThe first BFD NULL-Auth type processed by the receiver=E2=
=80=A6=E2=80=9D.=C2=A0 Change to =C2=A0=E2=80=9CThe first BFD authenticatio=
n section with the NULL Authentication type, in a valid BFD control p=
acket, processed by the receiver=E2=80=9D .

Also, does it have to be NULL Auth, I believe it can be any auth wit=
h sequence number? If that=E2=80=99s the case change to =C2=A0=E2=80=9CThe =
first BFD authentication section with a non-zero sequence number, in =
a valid BFD control packet, processed by the receiver is used for=E2=80=A6.=
=E2=80=9D.


=C2=A0


Regards,


Reshad.


=C2=A0




From: =
Rtg-bfd <rtg-bfd-bounces@ietf=
.org> on behalf of Santosh P K <santosh.pallagatti@gmail.com>

Date: Sunday, July 19, 2020 at 4:06 PM

To: "rtg-=
bfd@ietf.org" <rtg-bfd@ietf.org>

Subject: Fwd: New Version Notification for draft-ietf-bfd-stability-=
06.txt






=C2=A0






Hello All,




=C2=A0 =C2=A0 A new version of draft for BFD-stablit=
y is here for review. Changes include addressing shepherd comments as provi=
ded here.=C2=A0https://datatracker.ietf.org/d=
oc/draft-ietf-bfd-stability/shepherdwriteup/.
 Please also see attached diff.=C2=A0






=C2=A0






Thanks






Santosh P K=C2=A0






---------- Forwarded message ---------

From: <int=
ernet-drafts@ietf.org>

Date: Mon, Jul 13, 2020 at 4:41 PM

Subject: New Version Notification for draft-ietf-bfd-stability-06.txt

To: Mach Chen <mach.chen@huawei.com>, Ankur Saxena <ankurpsaxena@gmail.com>, Peng Fan &=
lt;fanp08@gmail.com>, Mahesh Jethanandani <mjethanandani@gmail.com>,
 Ashesh Mishra <mishra.ashesh@gmail.com>, Santosh Pallagatti <santosh.pallagatti@gmai=
l.com>










A new version of I-D, draft-ietf-bfd-stability-06.txt

has been successfully submitted by Santosh Pallagatti and posted to the

IETF repository.



Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-bfd-stability

Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A006

Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD Stability

Document date:=C2=A0 2020-07-13

Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd

Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6

URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 
https://www.ietf.org/internet-drafts/draft-ietf-bfd-stability-06.txt
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://datatracker.=
ietf.org/doc/draft-ietf-bfd-stability/

Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0https://tools.ietf.org/html/=
draft-ietf-bfd-stability-06

Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0https://datatracker.i=
etf.org/doc/html/draft-ietf-bfd-stability

Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://ww=
w.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-stability-06



Abstract:

=C2=A0 =C2=A0This document describes extensions to the Bidirectional Forwar=
ding

=C2=A0 =C2=A0Detection (BFD) protocol to measure BFD stability.=C2=A0 Speci=
fically, it

=C2=A0 =C2=A0describes a mechanism for detection of BFD packet loss.









Please note that it may take a couple of minutes from the time of submissio=
n

until the htmlized version and diff are available at 
tools.ietf.org.



The IETF Secretariat
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([2601:647:5600:5020:832:30a0:8e73:f872]) by smtp.gmail.com with ESMTPSA id f29sm15554059pga.59.2020.07.27.12.14.12 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 Jul 2020 12:14:12 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.6\)) Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt From: Mahesh Jethanandani In-Reply-To: <012789B0-D1D4-47F4-9593-4E9963931228@cisco.com> Date: Mon, 27 Jul 2020 12:14:11 -0700 Cc: "rtg-bfd@ietf. org" Content-Transfer-Encoding: quoted-printable Message-Id: <2B34D35B-4659-4C8E-AF4E-A55D632C3D18@gmail.com> References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <012789B0-D1D4-47F4-9593-4E9963931228@cisco.com> To: Reshad Rehman X-Mailer: Apple Mail (2.3445.9.6) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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 Jul 2020 19:14:16 -0000 Hi Reshad, Thanks for combing through the changes. > On Jul 22, 2020, at 4:10 PM, Reshad Rahman (rrahman) = wrote: >=20 > Mahesh, thanks for addressing my comments.=20 >=20 > I will update the shepherd write-up based on my comments below. >=20 > General: both "BFD control packet" and "BFD packet" are used. I think = we should stick to "BFD control packet". > General: s/BFD Control packet/BFD control packet/ Done. >=20 > Introduction, next-to last paragraph. Instead of "The interval of this = non-state change frame can be...", I'd suggest "The interval of these = BFD packets can be..." or "The interval of the BFD packets without a = significant change can be...". Anyway remove "frame" as previously = discussed and avoid use of "non-state change" now that you've defined = what a significant change is. Done. >=20 > Section 1.2. The new table could be incorrectly interpreted as having = 1 entry. Suggest changing this to bullet form would make it clearer. Ok. >=20 > Section 1.2 introduces the term "configured interval" but section 2 = uses the term "configured period". Also for the description, what about = "interval at which BFD control packets are authenticated in the UP = state".=20 > Also wondering if instead we should have a new bfd.AuthUpStateInterval = state variable (see 6.8.1 of RFC5880) since having this value may not = always be configured (implementation specific)? Changed all =E2=80=9Cconfigured period=E2=80=9D to =E2=80=9Cconfigured = interval=E2=80=9D and updated the description. >=20 > Section 2. Replace "frame" by "packet" or "BFD control packet" as = appropriate. Ok. >=20 > Section 2. Thanks for modifying the table as per our discussions. = Regarding adding AdminDown to the table, I believe I misled you. Our = discussion was based on "what happens if we're UP and receive a packet = which says AdminDown"? As per 6.2 of RFC5880, the receiver would go to = DOWN state. However the rows/columns in the table are for the local = state (new and old), and not for state in received packet. Since we = can't go to AdminDown state or leave AdmnDown state based on a packet = received, AdminDown state should be removed from this table . I think = it'd be good to add a reference to the BFD FSM (6.8.2 of RFC5880) in the = paragraph before the table. You mean Section 6.2 of RFC 5880. >=20 > Section 2. For configured period (or whatever we decide to call it) = add a reference to section 1.2. >=20 > Section 4. s/to to/to/ Done. Will post the draft with these changes shortly. >=20 > Regards, > Reshad. >=20 > =EF=BB=BFOn 2020-07-13, 4:56 PM, "Rtg-bfd on behalf of Mahesh = Jethanandani" wrote: >=20 > This version of the draft addresses some of the shepherd comments. = Welcome any feedback. >=20 >> On Jul 13, 2020, at 12:07 PM, 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 = WG of the IETF. >>=20 >> Title : Optimizing BFD Authentication >> Authors : Mahesh Jethanandani >> Ashesh Mishra >> Ankur Saxena >> Manav Bhatia >> Filename : = draft-ietf-bfd-optimizing-authentication-10.txt >> Pages : 8 >> Date : 2020-07-13 >>=20 >> Abstract: >> This document describes an optimization to BFD Authentication as >> described in Section 6.7 of BFD RFC 5880. This document updates RFC >> 5880. >>=20 >>=20 >> The IETF datatracker status page for this draft is: >> = https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/= >>=20 >> There are also htmlized versions available at: >> = https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-10 >> = https://datatracker.ietf.org/doc/html/draft-ietf-bfd-optimizing-authentica= tion-10 >>=20 >> A diff from the previous version is available at: >> = https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-optimizing-authenticati= on-10 >>=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 >>=20 >=20 > Mahesh Jethanandani > mjethanandani@gmail.com >=20 >=20 >=20 >=20 From nobody Mon Jul 27 20:04:21 2020 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 A116B3A0B26 for ; 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Tue, 28 Jul 2020 03:04:15 +0000 From: "Reshad Rahman (rrahman)" To: Mahesh Jethanandani CC: "rtg-bfd@ietf. org" Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Thread-Topic: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt Thread-Index: AQHWWUj8estRbnwSu0OXwm1uDoRSlKkF/YUAgA4HeACAB9yogIAAQEYA Date: Tue, 28 Jul 2020 03:04:15 +0000 Message-ID: References: <159466724499.14803.15233027731222579839@ietfa.amsl.com> <012789B0-D1D4-47F4-9593-4E9963931228@cisco.com> <2B34D35B-4659-4C8E-AF4E-A55D632C3D18@gmail.com> In-Reply-To: <2B34D35B-4659-4C8E-AF4E-A55D632C3D18@gmail.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: Microsoft-MacOutlook/16.37.20051002 authentication-results: gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=none action=none header.from=cisco.com; x-originating-ip: [142.113.229.50] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b1b779d9-cf85-49ab-dd46-08d832a2e988 x-ms-traffictypediagnostic: BN6PR11MB1347: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6108; 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charset="utf-8" Content-ID: <93C72EFBAE490E4AA390223480813358@namprd11.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BN6PR11MB3875.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: b1b779d9-cf85-49ab-dd46-08d832a2e988 X-MS-Exchange-CrossTenant-originalarrivaltime: 28 Jul 2020 03:04:15.5917 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: eoQbBJG4NFjOF9HlUOmUDlgmnTFgEAKV9C+7ayMVOJp6qPRxqx7IsNOQiXDTQhNIrsiW6HBcgZAgHEpye89HRg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR11MB1347 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.102.12, xch-rcd-002.cisco.com X-Outbound-Node: alln-core-11.cisco.com Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2020 03:04:21 -0000 SGkgTWFoZXNoLA0KDQrvu79PbiAyMDIwLTA3LTI3LCAzOjE0IFBNLCAiTWFoZXNoIEpldGhhbmFu ZGFuaSIgPG1qZXRoYW5hbmRhbmlAZ21haWwuY29tPiB3cm90ZToNCg0KDQogICAgPiANCiAgICA+ IFNlY3Rpb24gMi4gVGhhbmtzIGZvciBtb2RpZnlpbmcgdGhlIHRhYmxlIGFzIHBlciBvdXIgZGlz Y3Vzc2lvbnMuIFJlZ2FyZGluZyBhZGRpbmcgQWRtaW5Eb3duIHRvIHRoZSB0YWJsZSwgSSBiZWxp ZXZlIEkgbWlzbGVkIHlvdS4gT3VyIGRpc2N1c3Npb24gd2FzIGJhc2VkIG9uICJ3aGF0IGhhcHBl bnMgaWYgd2UncmUgVVAgYW5kIHJlY2VpdmUgYSBwYWNrZXQgd2hpY2ggc2F5cyBBZG1pbkRvd24i PyBBcyBwZXIgNi4yIG9mIFJGQzU4ODAsIHRoZSByZWNlaXZlciB3b3VsZCBnbyB0byBET1dOIHN0 YXRlLiBIb3dldmVyIHRoZSByb3dzL2NvbHVtbnMgaW4gdGhlIHRhYmxlIGFyZSBmb3IgdGhlIGxv Y2FsIHN0YXRlIChuZXcgYW5kIG9sZCksIGFuZCBub3QgZm9yIHN0YXRlIGluIHJlY2VpdmVkIHBh Y2tldC4gU2luY2Ugd2UgY2FuJ3QgZ28gdG8gQWRtaW5Eb3duIHN0YXRlIG9yIGxlYXZlIEFkbW5E b3duIHN0YXRlIGJhc2VkIG9uIGEgcGFja2V0IHJlY2VpdmVkLCBBZG1pbkRvd24gc3RhdGUgc2hv dWxkIGJlIHJlbW92ZWQgZnJvbSB0aGlzIHRhYmxlIC4gSSB0aGluayBpdCdkIGJlIGdvb2QgdG8g YWRkIGEgcmVmZXJlbmNlIHRvIHRoZSBCRkQgRlNNICg2LjguMiBvZiBSRkM1ODgwKSBpbiB0aGUg cGFyYWdyYXBoIGJlZm9yZSB0aGUgdGFibGUuDQoNCiAgICBZb3UgbWVhbiBTZWN0aW9uIDYuMiBv ZiBSRkMgNTg4MC4NCg0KWWVzIGluZGVlZCB0aGF0J3Mgd2hhdCBJIG1lYW50Lg0KDQpSZWdhcmRz LA0KUmVzaGFkLg0KDQo= From nobody Mon Jul 27 20:16:36 2020 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 75C9E3A0AFB; Mon, 27 Jul 2020 20:15:59 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: rtg-bfd@ietf.org Subject: I-D Action: draft-ietf-bfd-optimizing-authentication-11.txt X-Test-IDTracker: no X-IETF-IDTracker: 7.10.1 Auto-Submitted: auto-generated Precedence: bulk Reply-To: rtg-bfd@ietf.org Message-ID: <159590615939.9761.12762407712681706851@ietfa.amsl.com> Date: Mon, 27 Jul 2020 20:15:59 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2020 03:16:00 -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 WG of the IETF. Title : Optimizing BFD Authentication Authors : Mahesh Jethanandani Ashesh Mishra Ankur Saxena Manav Bhatia Filename : draft-ietf-bfd-optimizing-authentication-11.txt Pages : 8 Date : 2020-07-27 Abstract: This document describes an optimization to BFD Authentication as described in Section 6.7 of BFD RFC 5880. This document updates RFC 5880. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-optimizing-authentication/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-optimizing-authentication-11 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-optimizing-authentication-11 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-optimizing-authentication-11 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 Tue Jul 28 11:03:18 2020 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 4CAF33A0B10; Tue, 28 Jul 2020 11:03:13 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: rtg-bfd@ietf.org Subject: I-D Action: draft-ietf-bfd-unsolicited-02.txt X-Test-IDTracker: no X-IETF-IDTracker: 7.11.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: rtg-bfd@ietf.org Message-ID: <159595939323.28151.13605682326995500813@ietfa.amsl.com> Date: Tue, 28 Jul 2020 11:03:13 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2020 18:03:14 -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 WG of the IETF. Title : Unsolicited BFD for Sessionless Applications Authors : Enke Chen Naiming Shen Robert Raszuk Reshad Rahman Filename : draft-ietf-bfd-unsolicited-02.txt Pages : 12 Date : 2020-07-28 Abstract: For operational simplification of "sessionless" applications using BFD, in this document we present procedures for "unsolicited BFD" that allow a BFD session to be initiated by only one side, and be established without explicit per-session configuration or registration by the other side (subject to certain per-interface or per-router policies). The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-unsolicited/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-unsolicited-02 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-unsolicited-02 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-unsolicited-02 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 Tue Jul 28 11:27:04 2020 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 BA3D53A0AEA; Tue, 28 Jul 2020 11:26:56 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit From: internet-drafts@ietf.org To: Cc: rtg-bfd@ietf.org Subject: I-D Action: draft-ietf-bfd-vxlan-14.txt X-Test-IDTracker: no X-IETF-IDTracker: 7.11.0 Auto-Submitted: auto-generated Precedence: bulk Reply-To: rtg-bfd@ietf.org Message-ID: <159596081669.23122.8319513582335889661@ietfa.amsl.com> Date: Tue, 28 Jul 2020 11:26:56 -0700 Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2020 18:26:57 -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 WG of the IETF. Title : BFD for VXLAN Authors : Santosh Pallagatti Sudarsan Paragiri Vengada Prasad Govindan Mallik Mudigonda Greg Mirsky Filename : draft-ietf-bfd-vxlan-14.txt Pages : 11 Date : 2020-07-28 Abstract: This document describes the use of the Bidirectional Forwarding Detection (BFD) protocol in point-to-point Virtual eXtensible Local Area Network (VXLAN) tunnels used to form an overlay network. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-bfd-vxlan-14 https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan-14 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-14 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 Tue Jul 28 11:28:56 2020 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 681263A0AEF; Tue, 28 Jul 2020 11:28:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, 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 AE3Tijea41WM; Tue, 28 Jul 2020 11:28:52 -0700 (PDT) Received: from mail-lj1-x236.google.com (mail-lj1-x236.google.com [IPv6:2a00:1450:4864:20::236]) (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 692ED3A0AEA; Tue, 28 Jul 2020 11:28:52 -0700 (PDT) Received: by mail-lj1-x236.google.com with SMTP id x9so22247224ljc.5; Tue, 28 Jul 2020 11:28:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=QRlITHnN7ZcRxHmn2sp7ZiMJW0DGyympoVlQ5uLXfaw=; b=MDEc/wO7L0zMjxh3aXUI+yqgR6hRzbSDmguPXZjdqDPmGBje1uoDUAsq1OtQtFeO9L yVBu8c9N4Wy/mPBpyy9zIty/nqYvNxwwnc7zliufNvXlo98GT4PLkpnQxkM2GoCoG9yH CSffldu6kNcdRHTZP5LyY39/RBVFaA/NJt4OgQq3hmRIFlWsE/FadEX4zl2MQa4qYYVQ KK3IsiSD0pufKWape4I4LoQxhxL8WWQCpo/VuqTUnHc6zH0YXCJnUEelew/cjIVgse5z VtxzfSpMYUoSmlW744JWRaQHr9rUwgBK+4LQpD47NAm8eRe9DZxmqMG33qeGM8xjKqVU FWCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=QRlITHnN7ZcRxHmn2sp7ZiMJW0DGyympoVlQ5uLXfaw=; b=TCcED3h1fk7KvsEwHouFPg7DR3IKNth0J1ZS8tXTvlUk3LLq1Ts7fSbt0Ez82mTl1E CeXj0FM1RrK07jOLqzkQRt0BLtWUNeKgvKkx8ueHUnaH8fPDGbLNwGuiFcqczHYQI6hk gUBv19Vs6RbqxmI1r3P0zXtJihux8cICO0NcOp2Mmj1XtQX3ejQ2JcJFuGFLTYKKQPPX nVARIeVc7ht31TfVEU4XGsf4kvTMkODhRtADfas7OKh4MIxJRWv67zsRuLHATqJYai9s Yxd3ZYtV/+pT85Lg5QGb2dPWhNFtUFHIIhjLFFhEdt5rzZ7rQ66u9CzJXoJpDEiVdjRi DxZg== X-Gm-Message-State: AOAM533XawGJUMuyyOx2SvRwgg9A9yuyn02CitfCUt03HG7KDQ2CPtaS TK4mWpMrSB0HjIBwJRdVXratWIHy0DAfLLEAzuMdKg== X-Google-Smtp-Source: ABdhPJy9ZImNiV5g9RzQRgUovkHSYMowXWuIUnt150T+xf5uAqfd41evlr+g9Wdn8qvK/H7doemg7Do7cN0iOOCfsyI= X-Received: by 2002:a2e:6802:: with SMTP id c2mr7739748lja.279.1595960930074; Tue, 28 Jul 2020 11:28:50 -0700 (PDT) MIME-Version: 1.0 References: <159596081732.23122.14884230998866217189@ietfa.amsl.com> In-Reply-To: <159596081732.23122.14884230998866217189@ietfa.amsl.com> From: Greg Mirsky Date: Tue, 28 Jul 2020 11:28:37 -0700 Message-ID: Subject: Fwd: New Version Notification for draft-ietf-bfd-vxlan-14.txt To: rtg-bfd WG , bfd-chairs@ietf.org Content-Type: multipart/alternative; boundary="00000000000050045f05ab849cd4" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "RTG Area: Bidirectional Forwarding Detection DT" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jul 2020 18:28:55 -0000 --00000000000050045f05ab849cd4 Content-Type: text/plain; charset="UTF-8" Dear All, this version includes updates that address comments received over the course of the IESG review of the draft. Regards, Greg ---------- Forwarded message --------- From: Date: Tue, Jul 28, 2020 at 11:26 AM Subject: New Version Notification for draft-ietf-bfd-vxlan-14.txt To: Vengada Prasad Govindan , Greg Mirsky < gregimirsky@gmail.com>, Mallik Mudigonda , Sudarsan Paragiri , Santosh Pallagatti < santosh.pallagatti@gmail.com> A new version of I-D, draft-ietf-bfd-vxlan-14.txt has been successfully submitted by Greg Mirsky and posted to the IETF repository. Name: draft-ietf-bfd-vxlan Revision: 14 Title: BFD for VXLAN Document date: 2020-07-28 Group: bfd Pages: 11 URL: https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-14.txt Status: https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ Htmlized: https://tools.ietf.org/html/draft-ietf-bfd-vxlan-14 Htmlized: https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-14 Abstract: This document describes the use of the Bidirectional Forwarding Detection (BFD) protocol in point-to-point Virtual eXtensible Local Area Network (VXLAN) tunnels used to form an overlay network. 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 --00000000000050045f05ab849cd4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Dear All,
this version includes updates that address c= omments received=C2=A0over the course of the IESG review of the draft.

Regards,
Greg

---------- Forwarded message ----= -----
From: <internet-drafts@ietf.org>
Date: Tue, Jul 28, 2020 a= t 11:26 AM
Subject: New Version Notification for draft-ietf-bfd-vxlan-14= .txt
To: Vengada Prasad Govindan <venggovi@cisco.com>, Greg Mirsky <gregimirsky@gmail.com>, Mallik Mudigonda <mmudigon@cisco.com>, Sudarsan Paragiri &= lt;sudarsan.225@gmail.com>= , Santosh Pallagatti <sa= ntosh.pallagatti@gmail.com>



A new version of I-D, draft-ietf-bfd-vxlan-14.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-bfd-vxlan
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A014
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD for VXLAN
Document date:=C2=A0 2020-07-28
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 11
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-14.tx= t
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https= ://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0https://tools= .ietf.org/html/draft-ietf-bfd-vxlan-14
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0https:= //datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-14

Abstract:
=C2=A0 =C2=A0This document describes the use of the Bidirectional Forwardin= g
=C2=A0 =C2=A0Detection (BFD) protocol in point-to-point Virtual eXtensible = Local
=C2=A0 =C2=A0Area Network (VXLAN) tunnels used to form an overlay network.<= br>



Please note that it may take a couple of minutes from the time of submissio= n
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The IETF Secretariat


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10024) with ESMTP id rPiMQY-1ts7I for ; Thu, 30 Jul 2020 09:12:23 -0700 (PDT) Received: from slice.pfrc.org (slice.pfrc.org [67.207.130.108]) by ietfa.amsl.com (Postfix) with ESMTP id D55413A0BB6 for ; Thu, 30 Jul 2020 09:12:16 -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 1D5E81E2F9; Thu, 30 Jul 2020 12:23:25 -0400 (EDT) From: Jeffrey Haas Content-Type: multipart/alternative; boundary="Apple-Mail=_8E6A7A5E-5F02-423A-88B9-EA0C7C6E7F49" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.80.23.2.2\)) Date: Thu, 30 Jul 2020 12:12:13 -0400 Subject: IETF 108 candidate minutes Message-Id: <2DFF0B9F-7D70-4239-B79A-2B91C3E69896@pfrc.org> To: rtg-bfd@ietf.org X-Mailer: Apple Mail (2.3608.80.23.2.2) Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 30 Jul 2020 16:12:25 -0000 --Apple-Mail=_8E6A7A5E-5F02-423A-88B9-EA0C7C6E7F49 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii https://datatracker.ietf.org/doc/minutes-108-bfd/ = The following are the candidate minutes for the IETF 108 BFD session. = Please provide feedback to the mailing list. -- Jeff and Reshad # BFD IETF 108 - July 30, 2020 - 13:00-13:50 UTC Chairs: Jeffrey Haas, Reshad Rahman # Agenda: ## Chairs update: 10 mins - Jeff Haas & Reshad Rahman **Greg Mirsky** asks about bfd 2.0. **Jeff Haas** answers we're likely rechartering to tighten our charter = to the core continuity check (CC) case. We're likely to try to spin off = the other inter-system protocol machinery for other state to another WG = or BoF depending on interest. IESG was luke-warm about this option, at = best. WG would happily help in such a spin-off. ---- ## BFD for VxLAN: 5 minutes - Greg Mirsky =20 **Matthew Bocci** asks about BFD in Geneve. Question about testing to = individual VNIs. Also questions about issues related to ECMP. **Greg Mirsky** notes that we're focusing on management VNI case. **Reshad Rahman** asks about MAC assignments for non-management cases. **Jeff Haas** WG had discussed the more general case for testing to VNI. = Decided to leave it out of scope based on IESG discussions on security = issues. However, the packet format is likely general enough for the = test to the VNI case, but is out of scope for our document. These issues = also applies to BFD for Geneve Greg and Xiao are working on Geneve, so the Geneve document will pick up = the relevant changes from WGLC discussion for vxlan document. ---- ## BFD padding alteration (draft-xiao-bfd-padding-alteration): 10 minutes - Xiao Min **Santosh Pallagati**: How does poll and final interact with timers. = How long do we do poll/final sequence? **Xiao Min**: Should be very quick. **Santosh Pallagati**: This is just for negotiating large packets on. **Reshad Rahman**: Followup - scheduled packet, large packet sent in = next interval, verify that you get f-bit back. Some implementations = have policers; 1 packet ever X ms, we may see more. We may see drops of = BFD packets? Having reviewed BFD instability draft, this may show up as = instability. **Xiao Min**: Extra padding poll can be sent more than once. **Jeff Haas**: Poll continues until the the poller decides it is done.=20= **Greg Mirsky**: Poll is one packet per second? **Jeff Haas**: Poll actually for the rate that the session is currently = running. pps is limiting factor for most bfd implementations. bfd large = changes bps as well. That may interact poorly with policers? **Reshad Rahman**: Have you considered instead of on top of small packet = doing poll on just large packet? **Xiao Min**: Intent is to keep bfd running when trying to toggle mode. **Reshad Rahman**: You could replace a regular packet with a padded = packet. Concern that it could cause a BFD session to fail? **Jeff Haas** (speaking as BFD large packet author): Would you (Xiao) = consider merging into bfd large?=20 **Xiao Min**: Yes. **Jeff Haas**: Need to discuss requirements for operators that need the = large packet feature always on vs. negotiated. ---- ## BFD unaffiliated echo (draft-cw-bfd-unaffiliated-echo): 10 minutes - Weiqiang Cheng **Weiqiang Cheng**: Procedural text in BBF document is unclear. **Rakesh Gandhi**: We are doing similar things with TWAMP for = responder/reflector. Does this means we'll update 5880? **Weiqiang Cheng**: Is aware of TWAMP. Don't have to change BFD = solution. Don't need to change remote implementation. It's just = configuration. **Jeff Haas**: This is different from BBF in that we're talking about a = BFD implementation on the receiver. This would update 5880 if so. **Greg Mirsky**: Clarify on multiplexing on sessions for = sender/receiver. System assigns discriminator to the session - and it = goes into the packet. **Jaganbabu Rajamanickam** (Cisco): Is this same as S-BFD? **Greg Mirsky**: Reflector (learned via IGP, etc.) has an active role in = BFD. This proposal uses transport layer looping. **Jaganbabu Rajamanickam**: Could be loopback in data path.=20 **Greg Mirsky**: And therefore it's echo mode. **Xiao Min**: The BFD echo is actually a control packet. **Greg Mirsky**: If you're running multiple sessions, you'll want to = demux them. The contents of the packet matters then. **Jeff Haas**: Hum for adoption. Hum was panissimo - will take this = further to the mailing list. ----- ## Actions for after IETF: - Submit BFD for vxlan to IESG - Submit BFD Unsolicited to IESG - Try to get last updates on BFD Authentication documents to respond to = shepherd reviews. Submit to IESG. - Update BFD Large Packets per WG discussion. Discuss whether we're = submitting or holding back for further work. - Update working group about chartering discussion for bfd v2/extended. - Start adoption conversation for BFD unaffiliated.= --Apple-Mail=_8E6A7A5E-5F02-423A-88B9-EA0C7C6E7F49 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii https://datatracker.ietf.org/doc/minutes-108-bfd/

The following are the = candidate minutes for the IETF 108 BFD session.  Please provide = feedback to the mailing list.

-- Jeff and Reshad

# BFD = IETF 108 - July 30, 2020 - 13:00-13:50 UTC
Chairs: = Jeffrey Haas, Reshad Rahman

# Agenda:

## Chairs update:
  10 mins - Jeff = Haas & Reshad Rahman

**Greg Mirsky** asks about bfd 2.0.
**Jeff= Haas** answers we're likely rechartering to tighten our charter to the = core continuity check (CC) case.  We're likely to try to spin off = the other inter-system protocol machinery for other state to another WG = or BoF depending on interest.  IESG was luke-warm about this = option, at best.  WG would happily help in such a = spin-off.


----

## BFD for VxLAN:
  5 minutes - Greg Mirsky
  
**Matthew Bocci** asks = about BFD in Geneve.  Question about testing to individual VNIs. =  Also questions about issues related to ECMP.
**Greg Mirsky** notes that we're focusing on management VNI = case.
**Reshad Rahman** asks about MAC assignments = for non-management cases.
**Jeff Haas** WG had = discussed the more general case for testing to VNI.  Decided to = leave it out of scope based on IESG discussions on security issues. =  However, the packet format is likely general enough for the test = to the VNI case, but is out of scope for our document. These issues also = applies to BFD for Geneve

Greg and Xiao are working on Geneve, so the Geneve document = will pick up the relevant changes from WGLC discussion for vxlan = document.

----


## BFD padding = alteration (draft-xiao-bfd-padding-alteration):
  10 minutes - Xiao Min

**Santosh Pallagati**: How does poll = and final interact with timers.  How long do we do poll/final = sequence?
**Xiao Min**: Should be very = quick.
**Santosh Pallagati**: This is just for = negotiating large packets on.
**Reshad Rahman**: = Followup - scheduled packet, large packet sent in next interval, verify = that you get f-bit back.  Some implementations have policers; 1 = packet ever X ms, we may see more.  We may see drops of BFD = packets?  Having reviewed BFD instability draft, this may show up = as instability.
**Xiao Min**: Extra padding poll = can be sent more than once.
**Jeff Haas**: Poll = continues until the the poller decides it is done. 
**Greg Mirsky**: Poll is one packet per second?
**Jeff Haas**: Poll actually for the rate that the session is = currently running. pps is limiting factor for most bfd implementations. =  bfd large changes bps as well.  That may interact poorly with = policers?
**Reshad Rahman**: Have you considered = instead of on top of small packet doing poll on just large = packet?
**Xiao Min**: Intent is to keep bfd running = when trying to toggle mode.
**Reshad Rahman**: You = could replace a regular packet with a padded packet. Concern that it = could cause a BFD session to fail?
**Jeff Haas** = (speaking as BFD large packet author): Would you (Xiao) consider merging = into bfd large? 
**Xiao Min**: Yes.
**Jeff Haas**: Need to discuss requirements for operators = that need the large packet feature always on vs. negotiated.

----

## BFD unaffiliated echo = (draft-cw-bfd-unaffiliated-echo):
  10 minutes =  - Weiqiang Cheng

**Weiqiang Cheng**: Procedural text in BBF document is = unclear.
**Rakesh Gandhi**: We are doing similar = things with TWAMP for responder/reflector.  Does this means we'll = update 5880?
**Weiqiang Cheng**: Is aware of TWAMP. =  Don't have to change BFD solution. Don't need to change remote = implementation.  It's just configuration.
**Jeff= Haas**: This is different from BBF in that we're talking about a BFD = implementation on the receiver. This would update 5880 if so.
**Greg Mirsky**: Clarify on multiplexing on sessions for = sender/receiver. System assigns discriminator to the session - and it = goes into the packet.
**Jaganbabu Rajamanickam** = (Cisco): Is this same as S-BFD?
**Greg Mirsky**: = Reflector (learned via IGP, etc.) has an active role in BFD.  This = proposal uses transport layer looping.
**Jaganbabu = Rajamanickam**: Could be loopback in data path. 
**Greg Mirsky**: And therefore it's echo mode.
**Xiao Min**: The BFD echo is actually a control = packet.
**Greg Mirsky**: If you're running multiple = sessions, you'll want to demux them.  The contents of the packet = matters then.

**Jeff Haas**: Hum for adoption. Hum was panissimo - will = take this further to the mailing list.

-----

## Actions for after IETF:
- Submit BFD for vxlan to IESG
- Submit = BFD Unsolicited to IESG
- Try to get last updates = on BFD Authentication documents to respond to shepherd reviews. =  Submit to IESG.
- Update BFD Large Packets = per WG discussion. Discuss whether we're submitting or holding back for = further work.
- Update working group about = chartering discussion for bfd v2/extended.
- Start = adoption conversation for BFD unaffiliated.
= --Apple-Mail=_8E6A7A5E-5F02-423A-88B9-EA0C7C6E7F49-- From nobody Thu Jul 30 16:55:32 2020 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 D97813A1281; Thu, 30 Jul 2020 16:55:09 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.097 X-Spam-Level: X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, 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 QsPXFcrVzWsr; Thu, 30 Jul 2020 16:55:07 -0700 (PDT) Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) (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 34EAC3A127D; Thu, 30 Jul 2020 16:55:07 -0700 (PDT) Received: by mail-lf1-x133.google.com with SMTP id 140so15916883lfi.5; Thu, 30 Jul 2020 16:55:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=pMOPiOgGzCGYaTUP/OeCH5uuk9F3l6FZFIS6qzRqGuc=; b=PLTSJVusIn4orl0lKfMOvMGZ10fGZVMWSGs+ariEa3k6AP49CZeTmZokahb79gkzij F+/LqmoFvsbL/KY34yFkevcwZPCrwGKlHf9vqrxMEWe/FMeo5DwshAsdShv5njfM1VkM XyM6uag8RFCCBk5MET1ANTtIRKoG4baNwWR6Q1DV721S5uChcQisP4Hf06hkt4TG2fKm 8zMQV470s7DAvdTPBcY77DIFwpY/aGZqeDsvmkgXhsYy6ZFiAa3UQkaO6I1SpaBNZXFN C73a5tM+FkMb9pfi56BWxRkzzsHNBSH5tGVCzvcA1rYcdZsjEm8intbRsTg/loQ9CmRG aqTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=pMOPiOgGzCGYaTUP/OeCH5uuk9F3l6FZFIS6qzRqGuc=; b=jvM5qLSc4mwR6C3FKJoHkdkmTSeCx4uQ8PtnRucyLvISum/nUI8klhfaf+aAE+pIST qURoV/NY6NsLgl8C81pQyo9I6v8LElIbceupVIN5GHt5rHLuaFXEWPCb5RRSPHfNc1Y/ L2frqIDw6/yW8fL5D4/FaTZk1qWenQUQXX7Mkkc98IzvWzP8fAxO57mEhgzGPGkLEvMy KiyMafAgOh/fAWenV/XbmmoCs+73R84spDtCNKnSbktDyhE7/1YVDS5hspfWFAjsjIGa KdhfGeFKi7KPhAwC1gGzkQuA9DQMbfp2IaEZsoc+2Q2d3kok57v5+6zy04bNxO09K++c tW3w== X-Gm-Message-State: AOAM530eBl7en8RKoG1m6TyhVw9ezOPAOPWhLJaor6n0xFgW2CTYTwOx /4+OA6ZW+IUfLeIE0oHjo3SAoQ0ITa6cQh81ugZ85w== X-Google-Smtp-Source: ABdhPJzCtRQQIEIsTnK7jhXz9sqtNVlNUSHmOA4en4xs7b0ZURWIKLVgOsjwPbqEDXb9+uAhUfEZzJjNnWmbIH9cJbg= X-Received: by 2002:a19:4857:: with SMTP id v84mr487747lfa.195.1596153305265; Thu, 30 Jul 2020 16:55:05 -0700 (PDT) MIME-Version: 1.0 References: <20200127221705.GB17622@pfrc.org> <20200616211057.GA21373@pfrc.org> <20200720213734.GC25102@pfrc.org> In-Reply-To: <20200720213734.GC25102@pfrc.org> From: Greg Mirsky Date: Thu, 30 Jul 2020 16:54:54 -0700 Message-ID: Subject: Re: BFD for vxlan Destination MAC field (was Re: draft-ietf-bfd-vxlan IESG status) To: Jeffrey Haas Cc: Donald Eastlake , The IESG , bfd-chairs@ietf.org, draft-ietf-bfd-vxlan@ietf.org, rtg-bfd WG Content-Type: multipart/alternative; boundary="000000000000c4783b05abb166a4" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 30 Jul 2020 23:55:10 -0000 --000000000000c4783b05abb166a4 Content-Type: text/plain; charset="UTF-8" Hi Jeff, do you think that the record in the Usage filed for the requested MAC address instead of "BFD over VXLAN" be more generic, e.g., "Active OAM over NVO3"? What do you think? Regards, Greg On Mon, Jul 20, 2020 at 2:26 PM Jeffrey Haas wrote: > On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote: > > >> Proposed solution: A MAC value should be chosen that is well known > and the > > >> text would become: > > >> > > >> "Destination MAC: A Management VNI, which does not have any tenants, > will > > >> have no dedicated MAC address for decapsulated traffic. The value > > >> X:X:X:X:X > > >> SHOULD be used in this field." > > >> > > >> SHOULD might need to be MUST. Since a partial motivation for > permitting > > >> the > > >> flexibility in the specification to NOT use the management VNI is > desired= > > > , > > >> MUST might be inappropriate. > > >> > > > GIM>> Accepted the suggested text. I agree that the flexibility to not > use > > > the Management VNI is permitted in the specification and thus SHOULD > in the > > > text is consistent with that scenario. How would we pick the MAC > address? > > > > I am out of my area of expertise and I was hoping someone in the IESG > can offer a fix. :-) I am copying Donald Eastlake since he's the > designated expert for the IANA MAC address block. > > > > Donald, review of the thread may be useful, but tersely the need is to > have a well known MAC address that can be placed in this vxlan PDU that is > literally a placeholder of "not to be used for forwarding". The packet > arrives at the endpoint and, if not immediately accepted, would be dropped. > > > > If there is no well known MAC that could be used for such a behavior, > perhaps an address from the IANA block may be used? > > > > While I suspect the IANA mac documentation range could be used, IANA may > not appreciate that. > > Donald is not responding to emails. Considering I've been similarly bad > about responding, that's forgivable. However, in the interest of advancing > the document, I'd like to make a proposal. > > https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml > > Proposed text: > > : Destination MAC: A Management VNI, which does not have any tenants, will > : have no dedicated MAC address for decapsulated traffic. The value > : [TBD1] SHOULD be used in this field. > : > : IANA Considerations: > : > : IANA is requested to assign a single MAC address to the value TBD1 from > the > : "IANA Unicast 48-bit MAC Address" registry from the "Unassigned (small > : allocations)" block. The Usage field will be "BFD for vxlan" with a > : Reference field of this document. > > > > -- Jeff > --000000000000c4783b05abb166a4 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff,
do you think that the record in the Usage fil= ed for the requested MAC address instead of "BFD over VXLAN" be m= ore generic, e.g., "Active OAM over NVO3"?
What do you = think?

Regards,
Greg

On Mon, Jul 20= , 2020 at 2:26 PM Jeffrey Haas <jhaas@= pfrc.org> wrote:
On Wed, Jun 17, 2020 at 03:52:14PM -0400, Jeffrey Haas wrote:
> >> Proposed solution: A MAC value should be chosen that is well = known and the
> >> text would become:
> >>
> >> "Destination MAC: A Management VNI, which does not have = any tenants, will
> >> have no dedicated MAC address for decapsulated traffic.=C2=A0= The value
> >> X:X:X:X:X
> >> SHOULD be used in this field."
> >>
> >> SHOULD might need to be MUST.=C2=A0 Since a partial motivatio= n for permitting
> >> the
> >> flexibility in the specification to NOT use the management VN= I is desired=3D
> > ,
> >> MUST might be inappropriate.
> >>
> > GIM>> Accepted the suggested text. I agree that the flexibi= lity to not use
> > the Management VNI is permitted in the specification and thus SHO= ULD in the
> > text is consistent with that scenario. How would we pick the MAC = address?
>
> I am out of my area of expertise and I was hoping someone in the IESG = can offer a fix. :-)=C2=A0 I am copying Donald Eastlake since he's the = designated expert for the IANA MAC address block.
>
> Donald, review of the thread may be useful, but tersely the need is to= have a well known MAC address that can be placed in this vxlan PDU that is= literally a placeholder of "not to be used for forwarding".=C2= =A0 The packet arrives at the endpoint and, if not immediately accepted, wo= uld be dropped.
>
> If there is no well known MAC that could be used for such a behavior, = perhaps an address from the IANA block may be used?
>
> While I suspect the IANA mac documentation range could be used, IANA m= ay not appreciate that.

Donald is not responding to emails.=C2=A0 Considering I've been similar= ly bad
about responding, that's forgivable.=C2=A0 However, in the interest of = advancing
the document, I'd like to make a proposal.

https://www.iana.org/assignm= ents/ethernet-numbers/ethernet-numbers.xhtml

Proposed text:

: Destination MAC: A Management VNI, which does not have any tenants, will<= br> : have no dedicated MAC address for decapsulated traffic.=C2=A0 The value : [TBD1] SHOULD be used in this field.
:
: IANA Considerations:
:
: IANA is requested to assign a single MAC address to the value TBD1 from t= he
: "IANA Unicast 48-bit MAC Address" registry from the "Unass= igned (small
: allocations)" block.=C2=A0 The Usage field will be "BFD for vxl= an" with a
: Reference field of this document.



-- Jeff
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for ; Fri, 31 Jul 2020 15:57:47 -0700 (PDT) Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) (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 4C9003A07A9 for ; Fri, 31 Jul 2020 15:57:47 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id b30so17647537lfj.12 for ; Fri, 31 Jul 2020 15:57:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=AW73a9EhdrPmnEOVHKuW8QaDShtFxiSS1hzqtCq6Vts=; b=VHwJmHu9mOaViMhe+euz1VkiWUHjLvIH0cwWe5mz6TS2Jdaq0fibxoSD6NTMhY9/YO Rm1bRksy7QaIJmsnBAJ0qvA7f06ppuOg4gVBXskPsN9xbvlXLWPA/vrJDaMbcNAkzopl BcJfa41rLM+nRqG6HMkDOeovUGEd7YJhmYVCgk7oOfP7V9Xnf29WDUz+tkCnlTTqMvu6 YDbss4L4mo7g1Fs8EGOrbOsi90HBfbAUz6dOFvV8oALB9c7tw5yrfPwQAN606Xr+OvKR 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-0700 (PDT) MIME-Version: 1.0 References: <2DFF0B9F-7D70-4239-B79A-2B91C3E69896@pfrc.org> In-Reply-To: <2DFF0B9F-7D70-4239-B79A-2B91C3E69896@pfrc.org> From: Greg Mirsky Date: Fri, 31 Jul 2020 15:57:34 -0700 Message-ID: Subject: Re: IETF 108 candidate minutes To: Jeffrey Haas Cc: rtg-bfd WG Content-Type: multipart/alternative; boundary="00000000000092de7205abc4b76e" Archived-At: X-BeenThere: rtg-bfd@ietf.org X-Mailman-Version: 2.1.29 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, 31 Jul 2020 22:57:50 -0000 --00000000000092de7205abc4b76e Content-Type: text/plain; charset="UTF-8" Hi Jeff, I have nothing to change/add in the candidate minutes. Thank you! Regards, Greg On Thu, Jul 30, 2020 at 9:12 AM Jeffrey Haas wrote: > https://datatracker.ietf.org/doc/minutes-108-bfd/ > > The following are the candidate minutes for the IETF 108 BFD session. > Please provide feedback to the mailing list. > > -- Jeff and Reshad > > # BFD IETF 108 - July 30, 2020 - 13:00-13:50 UTC > Chairs: Jeffrey Haas, Reshad Rahman > > # Agenda: > > ## Chairs update: > 10 mins - Jeff Haas & Reshad Rahman > > **Greg Mirsky** asks about bfd 2.0. > **Jeff Haas** answers we're likely rechartering to tighten our charter to > the core continuity check (CC) case. We're likely to try to spin off the > other inter-system protocol machinery for other state to another WG or BoF > depending on interest. IESG was luke-warm about this option, at best. WG > would happily help in such a spin-off. > > > ---- > > ## BFD for VxLAN: > 5 minutes - Greg Mirsky > > **Matthew Bocci** asks about BFD in Geneve. Question about testing to > individual VNIs. Also questions about issues related to ECMP. > **Greg Mirsky** notes that we're focusing on management VNI case. > **Reshad Rahman** asks about MAC assignments for non-management cases. > **Jeff Haas** WG had discussed the more general case for testing to VNI. > Decided to leave it out of scope based on IESG discussions on security > issues. However, the packet format is likely general enough for the test > to the VNI case, but is out of scope for our document. These issues also > applies to BFD for Geneve > > Greg and Xiao are working on Geneve, so the Geneve document will pick up > the relevant changes from WGLC discussion for vxlan document. > > ---- > > > ## BFD padding alteration (draft-xiao-bfd-padding-alteration): > 10 minutes - Xiao Min > > **Santosh Pallagati**: How does poll and final interact with timers. How > long do we do poll/final sequence? > **Xiao Min**: Should be very quick. > **Santosh Pallagati**: This is just for negotiating large packets on. > **Reshad Rahman**: Followup - scheduled packet, large packet sent in next > interval, verify that you get f-bit back. Some implementations have > policers; 1 packet ever X ms, we may see more. We may see drops of BFD > packets? Having reviewed BFD instability draft, this may show up as > instability. > **Xiao Min**: Extra padding poll can be sent more than once. > **Jeff Haas**: Poll continues until the the poller decides it is done. > **Greg Mirsky**: Poll is one packet per second? > **Jeff Haas**: Poll actually for the rate that the session is currently > running. pps is limiting factor for most bfd implementations. bfd large > changes bps as well. That may interact poorly with policers? > **Reshad Rahman**: Have you considered instead of on top of small packet > doing poll on just large packet? > **Xiao Min**: Intent is to keep bfd running when trying to toggle mode. > **Reshad Rahman**: You could replace a regular packet with a padded > packet. Concern that it could cause a BFD session to fail? > **Jeff Haas** (speaking as BFD large packet author): Would you (Xiao) > consider merging into bfd large? > **Xiao Min**: Yes. > **Jeff Haas**: Need to discuss requirements for operators that need the > large packet feature always on vs. negotiated. > > ---- > > ## BFD unaffiliated echo (draft-cw-bfd-unaffiliated-echo): > 10 minutes - Weiqiang Cheng > > **Weiqiang Cheng**: Procedural text in BBF document is unclear. > **Rakesh Gandhi**: We are doing similar things with TWAMP for > responder/reflector. Does this means we'll update 5880? > **Weiqiang Cheng**: Is aware of TWAMP. Don't have to change BFD solution. > Don't need to change remote implementation. It's just configuration. > **Jeff Haas**: This is different from BBF in that we're talking about a > BFD implementation on the receiver. This would update 5880 if so. > **Greg Mirsky**: Clarify on multiplexing on sessions for sender/receiver. > System assigns discriminator to the session - and it goes into the packet. > **Jaganbabu Rajamanickam** (Cisco): Is this same as S-BFD? > **Greg Mirsky**: Reflector (learned via IGP, etc.) has an active role in > BFD. This proposal uses transport layer looping. > **Jaganbabu Rajamanickam**: Could be loopback in data path. > **Greg Mirsky**: And therefore it's echo mode. > **Xiao Min**: The BFD echo is actually a control packet. > **Greg Mirsky**: If you're running multiple sessions, you'll want to demux > them. The contents of the packet matters then. > > **Jeff Haas**: Hum for adoption. Hum was panissimo - will take this > further to the mailing list. > > ----- > > ## Actions for after IETF: > - Submit BFD for vxlan to IESG > - Submit BFD Unsolicited to IESG > - Try to get last updates on BFD Authentication documents to respond to > shepherd reviews. Submit to IESG. > - Update BFD Large Packets per WG discussion. Discuss whether we're > submitting or holding back for further work. > - Update working group about chartering discussion for bfd v2/extended. > - Start adoption conversation for BFD unaffiliated. > --00000000000092de7205abc4b76e Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Jeff,
I have nothing to change/add in the candidate= minutes. Thank you!

Regards,
Greg
=

= On Thu, Jul 30, 2020 at 9:12 AM Jeffrey Haas <jhaas@pfrc.org> wrote:
https:= //datatracker.ietf.org/doc/minutes-108-bfd/

The foll= owing are the candidate minutes for the IETF 108 BFD session.=C2=A0 Please = provide feedback to the mailing list.

-- Jeff and = Reshad

# BFD IETF 108 - July 30, 2020 - 13:00= -13:50 UTC
Chairs: Jeffrey Haas, Reshad Rahman

# Agenda:

## Chairs update:
=C2= =A0 10 mins - Jeff Haas & Reshad Rahman

**Greg= Mirsky** asks about bfd 2.0.
**Jeff Haas** answers we're lik= ely rechartering to tighten our charter to the core continuity check (CC) c= ase.=C2=A0 We're likely to try to spin off the other inter-system proto= col machinery for other state to another WG or BoF depending on interest.= =C2=A0 IESG was luke-warm about this option, at best.=C2=A0 WG would happil= y help in such a spin-off.


----

## BFD for VxLAN:
=C2=A0 5 minutes - Greg M= irsky
=C2=A0=C2=A0
**Matthew Bocci** asks about BFD in = Geneve.=C2=A0 Question about testing to individual VNIs.=C2=A0 Also questio= ns about issues related to ECMP.
**Greg Mirsky** notes that we= 9;re focusing on management VNI case.
**Reshad Rahman** asks abou= t MAC assignments for non-management cases.
**Jeff Haas** WG had = discussed the more general case for testing to VNI.=C2=A0 Decided to leave = it out of scope based on IESG discussions on security issues.=C2=A0 However= , the packet format is likely general enough for the test to the VNI case, = but is out of scope for our document. These issues also applies to BFD for = Geneve

Greg and Xiao are working on Geneve, so the= Geneve document will pick up the relevant changes from WGLC discussion for= vxlan document.

----

## BFD padding alteration (draft-xiao-bfd-padding-alteration):<= /div>
=C2=A0 10 minutes - Xiao Min

**Santosh P= allagati**: How does poll and final interact with timers.=C2=A0 How long do= we do poll/final sequence?
**Xiao Min**: Should be very quick.
**Santosh Pallagati**: This is just for negotiating large packets = on.
**Reshad Rahman**: Followup - scheduled packet, large packet = sent in next interval, verify that you get f-bit back.=C2=A0 Some implement= ations have policers; 1 packet ever X ms, we may see more.=C2=A0 We may see= drops of BFD packets?=C2=A0 Having reviewed BFD instability draft, this ma= y show up as instability.
**Xiao Min**: Extra padding poll can be= sent more than once.
**Jeff Haas**: Poll continues until the the= poller decides it is done.=C2=A0
**Greg Mirsky**: Poll is one pa= cket per second?
**Jeff Haas**: Poll actually for the rate that t= he session is currently running. pps is limiting factor for most bfd implem= entations. =C2=A0bfd large changes bps as well.=C2=A0 That may interact poo= rly with policers?
**Reshad Rahman**: Have you considered instead= of on top of small packet doing poll on just large packet?
**Xia= o Min**: Intent is to keep bfd running when trying to toggle mode.
**Reshad Rahman**: You could replace a regular packet with a padded packe= t. Concern that it could cause a BFD session to fail?
**Jeff Haas= ** (speaking as BFD large packet author): Would you (Xiao) consider merging= into bfd large?=C2=A0
**Xiao Min**: Yes.
**Jeff Haas**= : Need to discuss requirements for operators that need the large packet fea= ture always on vs. negotiated.

----

=
## BFD unaffiliated echo (draft-cw-bfd-unaffiliated-echo):
=
=C2=A0 10 minutes =C2=A0- Weiqiang Cheng

**We= iqiang Cheng**: Procedural text in BBF document is unclear.
**Rak= esh Gandhi**: We are doing similar things with TWAMP for responder/reflecto= r.=C2=A0 Does this means we'll update 5880?
**Weiqiang Cheng*= *: Is aware of TWAMP.=C2=A0 Don't have to change BFD solution. Don'= t need to change remote implementation.=C2=A0 It's just configuration.<= /div>
**Jeff Haas**: This is different from BBF in that we're talki= ng about a BFD implementation on the receiver. This would update 5880 if so= .
**Greg Mirsky**: Clarify on multiplexing on sessions for sender= /receiver. System assigns discriminator to the session - and it goes into t= he packet.
**Jaganbabu Rajamanickam** (Cisco): Is this same as S-= BFD?
**Greg Mirsky**: Reflector (learned via IGP, etc.) has an ac= tive role in BFD.=C2=A0 This proposal uses transport layer looping.
**Jaganbabu Rajamanickam**: Could be loopback in data path.=C2=A0
<= div>**Greg Mirsky**: And therefore it's echo mode.
**Xiao Min= **: The BFD echo is actually a control packet.
**Greg Mirsky**: I= f you're running multiple sessions, you'll want to demux them.=C2= =A0 The contents of the packet matters then.

**Jef= f Haas**: Hum for adoption. Hum was panissimo - will take this further to t= he mailing list.

-----

##= Actions for after IETF:
- Submit BFD for vxlan to IESG
- Submit BFD Unsolicited to IESG
- Try to get last updates on BF= D Authentication documents to respond to shepherd reviews.=C2=A0 Submit to = IESG.
- Update BFD Large Packets per WG discussion. Discuss wheth= er we're submitting or holding back for further work.
- Updat= e working group about chartering discussion for bfd v2/extended.
= - Start adoption conversation for BFD unaffiliated.
--00000000000092de7205abc4b76e--