Re: [nvo3] New Version Notification for draft-ietf-bfd-vxlan-08.txt
"Joel M. Halpern" <jmh@joelhalpern.com> Mon, 04 November 2019 03:52 UTC
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To: Anoop Ghanwani <anoop@alumni.duke.edu>, Greg Mirsky <gregimirsky@gmail.com>
Cc: rtg-bfd WG <rtg-bfd@ietf.org>, NVO3 <nvo3@ietf.org>, Dinesh Dutt <didutt@gmail.com>
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From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Sun, 03 Nov 2019 22:52:05 -0500
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Subject: Re: [nvo3] New Version Notification for draft-ietf-bfd-vxlan-08.txt
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Anoop, I think I at least am misunderstanding you. If one is using the management VNI, as I understand it there is no tenant. So there are no tenant MAC addresses. (This is one of the reasons I like using the management VNI.) Yours, Joel On 11/3/2019 10:32 PM, Anoop Ghanwani wrote: > Hi Greg, > > In the case of the management VNI, are we trying to say that we would > allow any MAC address other than a tenant MAC address? I would suggest > some more text be added to clarify what is permitted on the management > VLAN. Assuming that we want to allow any MAC other than a tenant MAC, > how does this get enforced? In other words, what can be done for the > network to protect itself if a sender violates this? > > One possible answer is to restrict the MAC address that may be used to > one that is owned by the VTEP or a "agreed on" multicast MAC address. > That means the receiver only needs to validate for those, and just > treats everything else as data. > > Also, for interoperability purposes, it would be best to specify that a > receiver MUST be able to handle any valid MAC address for the BFD > session, while a sender MAY pick any of them. > > Thanks, > Anoop > > On Sun, Nov 3, 2019 at 6:50 PM Greg Mirsky <gregimirsky@gmail.com > <mailto:gregimirsky@gmail.com>> wrote: > > Hi Anoop, > thank you for your comments and questions. Please find my notes > in-line tagged GIM>>. > > Regards, > Greg > > On Fri, Nov 1, 2019 at 4:24 PM Anoop Ghanwani <anoop@alumni.duke.edu > <mailto:anoop@alumni.duke.edu>> wrote: > > Hi Greg, > > A few comments. > > The draft has nits, specifically around the way the IPv6 address > is written. > > In section 4: > > BFD packet MUST be encapsulated -> > > BFD packets MUST be encapsulated > > GIM>> Thanks, will do. > > > >>> > > Destination MAC: This MUST NOT be of one of tenant's MAC > addresses. The destination MAC address MAY be the address > associated with the destination VTEP. The MAC address MAY be > configured, or it MAY be learned via a control plane protocol. > The details of how the MAC address is obtained are outside the > scope of this document. > > >>> > It looks like we have removed the option of using a well-known > IANA assigned MAC. If so, why is the above a MAY and not a > MUST? What else can it be? One interpretation is that it can > be anything unicast, or multicast, as long as it's not a tenant > MAC. Is that the intent? If so, it would be better to state it > that way. Also (and this is purely editorial), I think it would > be better if the first sentence above were moved to the end of > the paragraph. > > GIM>> Yes, you're right, we've removed that option and have removed > the request to IANA. I also agree that " MAY be the address > associated with the destination VTEP" is not the right choice of > normative language. On the other hand, MUST might be too restrictive > if BFD session is using the Management VNI. Would the following > update address your concern: > OLD TEXT: > Destination MAC: This MUST NOT be of one of tenant's MAC > addresses. The destination MAC address MAY be the address > associated with the destination VTEP. The MAC address MAY be > configured, or it MAY be learned via a control plane protocol. > The details of how the MAC address is obtained are outside the > scope of this document. > NEW TEXT: > Destination MAC: If the BFD session is not using the > Management VNI, > the destination MAC address MUST be the address > associated with the destination VTEP. The Destination MAC > MUST NOT be one of the tenant's MAC addresses. > The MAC address MAY be configured, or it MAY be learned via > a control plane protocol. The details of how the MAC address > is obtained are outside the scope of this document. > > > "The inner Ethernet frame carrying the BFD > Control packet- has the following format:" > > Extraneous '-' after packet. > > GIM>> Thanks, will do that too. > > > Thanks, > Anoop > > On Fri, Nov 1, 2019 at 10:53 AM Greg Mirsky > <gregimirsky@gmail.com <mailto:gregimirsky@gmail.com>> wrote: > > Dear All, > the new version includes updates resulting from the > discussions of Joel's comments in the RtrDir review of BFD > over VXLAN draft, comments from Anoop, and Dinesh. On behalf > of editors, thank you for your constructive comments and for > sharing your expertise, all much appreciated. > I hope we've addressed all your comments, and the draft can > proceed further. > > Regards, > Greg > > ---------- Forwarded message --------- > From: <internet-drafts@ietf.org > <mailto:internet-drafts@ietf.org>> > Date: Fri, Nov 1, 2019 at 10:45 AM > Subject: New Version Notification for > draft-ietf-bfd-vxlan-08.txt > To: Gregory Mirsky <gregimirsky@gmail.com > <mailto:gregimirsky@gmail.com>>, Mallik Mudigonda > <mmudigon@cisco.com <mailto:mmudigon@cisco.com>>, Sudarsan > Paragiri <sudarsan.225@gmail.com > <mailto:sudarsan.225@gmail.com>>, Vengada Prasad Govindan > <venggovi@cisco.com <mailto:venggovi@cisco.com>>, Santosh > Pallagatti <santosh.pallagatti@gmail.com > <mailto:santosh.pallagatti@gmail.com>> > > > > A new version of I-D, draft-ietf-bfd-vxlan-08.txt > has been successfully submitted by Greg Mirsky and posted to the > IETF repository. > > Name: draft-ietf-bfd-vxlan > Revision: 08 > Title: BFD for VXLAN > Document date: 2019-11-01 > Group: bfd > Pages: 11 > URL: > https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-08.txt > Status: https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ > Htmlized: https://tools.ietf.org/html/draft-ietf-bfd-vxlan-08 > Htmlized: > https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan > Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-08 > > Abstract: > This document describes the use of the Bidirectional > Forwarding > Detection (BFD) protocol in point-to-point Virtual > eXtensible Local > Area Network (VXLAN) tunnels forming up 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 <http://tools.ietf.org>. > > The IETF Secretariat >
- [nvo3] Fwd: New Version Notification for draft-ie… Greg Mirsky
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani
- Re: [nvo3] New Version Notification for draft-iet… Greg Mirsky
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani
- Re: [nvo3] New Version Notification for draft-iet… Joel M. Halpern
- Re: [nvo3] New Version Notification for draft-iet… Dinesh Dutt
- Re: [nvo3] New Version Notification for draft-iet… Joel M. Halpern
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani
- Re: [nvo3] New Version Notification for draft-iet… Dinesh Dutt
- Re: [nvo3] New Version Notification for draft-iet… Santosh P K
- Re: [nvo3] New Version Notification for draft-iet… Santosh P K
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani
- Re: [nvo3] New Version Notification for draft-iet… Santosh P K
- Re: [nvo3] New Version Notification for draft-iet… Dinesh Dutt
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani
- Re: [nvo3] New Version Notification for draft-iet… Greg Mirsky
- Re: [nvo3] New Version Notification for draft-iet… Dinesh Dutt
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani
- Re: [nvo3] New Version Notification for draft-iet… Dinesh Dutt
- Re: [nvo3] New Version Notification for draft-iet… Anoop Ghanwani