Re: [Teas] Network Slicing design team definitions- transport slice

John E Drake <jdrake@juniper.net> Tue, 01 September 2020 14:42 UTC

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From: John E Drake <jdrake@juniper.net>
To: "BRUNGARD, DEBORAH A" <db3546@att.com>, TEAS WG <teas@ietf.org>
Thread-Topic: Network Slicing design team definitions- transport slice
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Date: Tue, 1 Sep 2020 14:41:58 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/9HlhavjCtE7saG5Cztyil4ASzDE>
Subject: Re: [Teas] Network Slicing design team definitions- transport slice
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Deborah,

I completely agree with you - we should be using the term 'network slice'.

Yours Irrespectively,

John



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From: Teas <teas-bounces@ietf.org> On Behalf Of BRUNGARD, DEBORAH A
Sent: Tuesday, September 1, 2020 10:31 AM
To: TEAS WG <teas@ietf.org>
Subject: [Teas] Network Slicing design team definitions- transport slice

[External Email. Be cautious of content]

Hi,
(speaking as an individual)

Picking up on Jari's comment "sometimes people want to use labels that are a bit more imprecise, but I think we should strive to avoid such labels as much as we can", can you give more background on the choice of the term "transport slice"?

I noted while you have text on the use of "transport" by 3GPP as specifying a very specific sub-network in the radio network (which excludes the handoff to the rest of the network), you referenced RFC5921 (MPLS-TP) for the term "transport".

There was a long thread of mail on ACTN, RFC8453, to move away from the term "transport" to "TE networks" which was agreed to be more specific/appropriate for TEAS. Considering IETF is already using the term "network slicing" (including TEAS RFC8453) and 3GPP use of the term, I don't understand the use of "transport" in this document.

Considering IETF already uses the term "network slice" and 3GPP uses the term (and all the industry SDOs), I am concerned we will be confusing the industry, especially as "transport" is an imprecise term for TEAS work. Is this work a subset and scoped only to the 3GPP "transport" cloud (and implied use of MPLS-TP)? Or is it planned to be generic (for all TE networks)?

Deborah
(speaking as individual)