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Re: [Teas] Network Slicing Design Team definitions

John E Drake <jdrake@juniper.net> Thu, 30 April 2020 15:07 UTC

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From: John E Drake <jdrake@juniper.net>
To: "Joel M. Halpern" <jmh@joelhalpern.com>, Jari Arkko <jari.arkko@piuha.net>
CC: "teas@ietf.org" <teas@ietf.org>
Thread-Topic: [Teas] Network Slicing Design Team definitions
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Date: Thu, 30 Apr 2020 15:06:41 +0000
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Subject: Re: [Teas] Network Slicing Design Team definitions
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Hi,

This section is incorrect for at least two reasons.  It is describing the PE rather than the CE as the transport slice endpoint and every PE device will modify a CE packet if only to tag it with an identifier of the transport slice to which it belongs.

Yours Irrespectively,

John


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> -----Original Message-----
> From: Teas <teas-bounces@ietf.org> On Behalf Of Joel M. Halpern
> Sent: Thursday, April 30, 2020 10:59 AM
> To: Jari Arkko <jari.arkko@piuha.net>
> Cc: teas@ietf.org
> Subject: Re: [Teas] Network Slicing Design Team definitions
>
> [External Email. Be cautious of content]
>
>
> I am referring to the later text on endpoints.  It defines transport endpoints and
> service endpoints.  But not actual endpoints.  So I found it odd.
>
> Yours,
> Joel
>
> On 4/30/2020 10:29 AM, Jari Arkko wrote:
> > Joel:
> >
> >> Oddity:
> >>     The definition of Endpoint has the oddity that it seems to leave the original
> packet source and the intended packet destination as not being Endpoints?  They
> can not be attached directly to the transport slice?
> >
> > I’d like to understand your comment better. What specific text are you
> referring to? The definition simply said:
> >
> > "A transport slice is a logical network topology connecting a number
> >     of endpoints and a set of shared or dedicated network resources,
> >     which are used to satisfy specific Service Level Objectives (SLO)”.
> >
> > At least in my mind this isn’t necessarily related to packet source and
> destination addresses; I may want a VPN between your network and mine, but
> that’s different from the addresses used in the traffic entering the VPN. For
> instance, my computer’s address is not the endpoint of the VPN, my VPN router
> is.
> >
> > But maybe I misunderstood the comment. I agree that the sections that come
> after the definition and talk about e.g. specific characteristics may have
> confused something in some cases. E.g., not sure we’ve entirely covered
> directionality correctly in all the text.
> >
> > Jari
> >
>
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