Re: [Teas] Slicing Framework Open issue #1 : Service != Realization

[LUIS MIGUEL CONTRERAS MURILLO <[e-mail]>]

Hi all,

Agree, the proposed change is ok.

Best regards

Luis

-----Mensaje original-----
De: Teas <[e-mail]> En nombre de Joel M. Halpern
Enviado el: viernes, 25 de marzo de 2022 10:30
Para: [e-mail]
Asunto: Re: [Teas] Slicing Framework Open issue #1 : Service != Realization

Works for me.
Yours,
Joel

On 3/25/2022 5:17 AM, Adrian Farrel wrote:
> Hi,
>
> First in a series of emails to resolve the open issues mentioned
> during the TEAS meeting.
>
> We have, for the longest time, suffered from a blurring between the
> service provided to the customer, and how that service is engineered in the network.
> This leads us to talk about VPNs in a way where sometimes a VPN is
> what the customer gets and sometimes it is what the operator
> engineers. A good example is the term "MPLS VPN" as though the
> customer cares whether the VPN is provided using MPLS technology.
>
> We have, to some extent, clarifies this with recent YANG "Customer
> Service Models" that describe the service offered to the customer, but
> do not constrain the provider's choice of implementation technology or options.
>
> As the discussion of IETF Network Slices continues, I have repeatedly
> seen some blurring between the topics of the "IETF Network Slice
> Service" and the "IETF Network Slice." It seems to me that this mixing
> of concepts will continue as future readers pick up the document.
>
> Although I have tried to use the two terms clearly and distinctly, the
> document is missing a clear statement to disambiguate the two.
>
> Section 3 provides the definitions of the two terms at some length
> using subsections. The clarification would get lost if it was placed
> at the bottom of the section after the subsections, so I propose to
> include some text near the top of section as follows.
>
> OLD
>     IETF Network Slices are created to meet specific requirements,
>     typically expressed as bandwidth, latency, latency variation, and
>     other desired or required characteristics.  Creation of an IETF
>     Network Slice is initiated by a management system or other
>     application used to specify network-related conditions for particular
>     traffic flows in response to an actual or logical IETF Network Slice
>     service request.
>
>     Once created, these slices can be monitored, modified, deleted, and
>     otherwise managed.
>
>     Applications and components will be able to use these IETF Network
>     Slices to move packets between the specified end-points of the
>     service in accordance with specified characteristics.
> NEW
>     IETF Network Slices are created to meet specific requirements,
>     typically expressed as bandwidth, latency, latency variation, and
>     other desired or required characteristics.  Creation of an IETF
>     Network Slice is initiated by a management system or other
>     application used to specify network-related conditions for particular
>     traffic flows in response to an actual or logical IETF Network Slice
>     service request.
>
>     Once created, these slices can be monitored, modified, deleted, and
>     otherwise managed.
>
>     Applications and components will be able to use these IETF Network
>     Slices to move packets between the specified end-points of the
>     service in accordance with specified characteristics.
>
>     A clear distinction should be made between the "IETF Network
>     Slice service" which is the function delivered to the customer
>     (see Section 3.2) and which is agnostic to the technologies and
>     Mechanisms used by the service provider, and the "IETF Network
>     Slice" which is the realization of the service in the provider's
>     network achieved by partitioning network resources and by
>     applying certain tools and techniques within the network (see
>     Section 3.1).
> END
>
> Any objections?
>
> Thanks,
> Adrian
>
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