Re: [nvo3] Poll for WG adoption: draft-narten-nvo3-overlay-problem-statement-04

Somesh Gupta <someshg@Brocade.COM> Mon, 27 August 2012 16:37 UTC

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From: Somesh Gupta <someshg@Brocade.COM>
To: Yakov Rekhter <yakov@juniper.net>, "thomas.morin@orange.com" <thomas.morin@orange.com>
Date: Mon, 27 Aug 2012 09:37:16 -0700
Thread-Topic: [nvo3] Poll for WG adoption: draft-narten-nvo3-overlay-problem-statement-04
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References: <CC5031C9.322D5%matthew.bocci@alcatel-lucent.com> <6065_1346073171_503B7245_6065_970_1_503B727C.3040309@orange.com> <201208271322.q7RDMah65391@magenta.juniper.net>
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Cc: "nvo3@ietf.org" <nvo3@ietf.org>
Subject: Re: [nvo3] Poll for WG adoption: draft-narten-nvo3-overlay-problem-statement-04
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I agree that the statement does not have proof behind it.

Perhaps the question is whether a distributed control plane
makes sense in this environment. It seems that there will be
a central management entity that will do all of the provisioning
and setup/teardown etc. And it may be better to have a protocol
to query/distribute the information from this entity to all
NVEs (that need to have this information) than to update one or
two NVEs and for the NVEs to distribute the information among
themselves - just seems redundant.

The preferred answer may depend on whether you think NVE will
be primarily in the hypervisor or the TOR.

> -----Original Message-----
> From: nvo3-bounces@ietf.org [mailto:nvo3-bounces@ietf.org] On Behalf Of
> Yakov Rekhter
> Sent: Monday, August 27, 2012 6:23 AM
> To: thomas.morin@orange.com
> Cc: nvo3@ietf.org
> Subject: Re: [nvo3] Poll for WG adoption: draft-narten-nvo3-overlay-
> problem-statement-04
> 
> Thomas,
> 
> > Hi all,
> >
> > *Support*, pending removal of this paritcular piece (end of the
> second
> > paragraph of "3.5 Overlay Networking Work Areas"):
> >  >
> > > For example, routing protocols  (e.g., IS-IS, BGP) may have scaling
> >  > difficulties if implemented directly in all NVEs, based on both
> >  > flooding and convergence time concerns. An alternative approach
> >  > would be to use a standard query protocol between NVEs and the set
> of
> >  > network nodes that maintain address mappings used across the data
> >  > center for the entire overlay system.
> >
> > The above, beyond the fact that it is very debatable, would belong to
> a
> > discussion on solutions.
> 
> I agree with you that the above is highly debatable, and should be
> removed from the document prior to its adoption.
> 
> Yakov.
> 
> >
> > Thanks,
> >
> > -Thomas
> >
> >
> >
> > Matthew Bocci, 2012-08-14 :
> > > All,
> >  >
> >  > At the Vancouver IETF, there was considerable support for adopting
> >  > draft-narten-nvo3-overlay-problem-statement-03 as an NVO3 working
> >  > group document. However, there was also some support for
> >  > draft-fang-vpn4dc-problem-statement-01.
> >  >
> >  > Therefore, the chairs asked authors from both drafts, with help
> from
> >  > Eric Gray, to work together on a common problem statement draft,
> the
> >  > result of which is the subject of this adoption poll.
> >  >
> >  > If you support adoption of
> >  > draft-narten-nvo3-overlay-problem-statement-04, please reply to
> this
> >  > thread with 'support'.
> >  >
> >  > If you do not support adoption, please reply to this thread with
> 'do
> >  > not support', and state your reasons.
> >  >
> >  > This poll will close on Tuesday 28th August 2012.
> >  >
> >  > Note that we will be polling for adoption of the NVO3 framework
> >  > draft separately. We will start that poll in a separate thread,
> >  > shortly.
> >  >
> >  > Regards
> >  >
> >  > Matthew & Benson
> >  >
> >  >
> >  >
> >  > _______________________________________________ nvo3 mailing list
> >  > nvo3@ietf.org https://www.ietf.org/mailman/listinfo/nvo3
> >
> >
> >
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