Re: [Teas-ns-dt] New Version Notification for draft-nsdt-teas-transport-slice-definition-00.txt

Jari Arkko <jari.arkko@ericsson.com> Sun, 17 November 2019 08:07 UTC

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From: Jari Arkko <jari.arkko@ericsson.com>
To: "Rokui, Reza (Nokia - CA/Ottawa)" <reza.rokui@nokia.com>
CC: "teas-ns-dt@ietf.org" <teas-ns-dt@ietf.org>
Thread-Topic: New Version Notification for draft-nsdt-teas-transport-slice-definition-00.txt
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Date: Sun, 17 Nov 2019 08:07:17 +0000
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Subject: Re: [Teas-ns-dt] New Version Notification for draft-nsdt-teas-transport-slice-definition-00.txt
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Thanks for the discussion.



I reviewed the definition again today, and have some comments/suggestions.



First off, there’s overall quite a bit of material in the draft overall. Sometimes it is useful to nail down a concept in few words familiar to networking geeks even outside the mobile network space, and leave examples and use cases and mapping to interesting other things (such as 5G) to other documents. That might benefit understanding from others… we can talk about how we want to convey the final definitions once we’re done.



Secondly, I’d still love to polish the compactness of the definition a bit, to base it on fundamental concept. How about this:



OLD:

A Transport Slice is an abstract network topology connecting different network functions (NFs) with appropriate isolation and a specific Service Level Agreement (SLA) described in terms of shared or dedicated network resources. In other words, a transport slice is a group of connections that connect various NFs in the network to achieve some specific SLA for a customer as shown in Figure-2.

NEW:

A Transport Slice is an abstract network topology connecting different network functions (NFs) with a specific Service Level Agreement (SLA) described in terms of expected network service. The SLA can include characteristics such as guaranteed bandwidth or latency, requirements on the use of physically separate equipment, etc.

Jari