[Teas-ns-dt] FW: Progress of Slicing Design Team and overlap with existing TEAS work

["Adrian Farrel" <[e-mail]>]

Hi NS-DT,

I sent Jari a message way back in the last decade, but I know he has been busy skiing (curiously, on the same slopes as me, but not with me - perhaps I should have hunted him down).

I'm copying the message here to see whether anyone has any thoughts.

Thanks,
Adrian

-----Original Message-----
From: Adrian Farrel <[e-mail]> 
Sent: 27 December 2019 19:29
To: [e-mail]
Cc: [e-mail]
Subject: Progress of Slicing Design Team and overlap with existing TEAS work

Hi Jari,

Happy New Year!

I confess, I have not been following "your" Design Team closely. I should because I'm paid so very much to be the TEAS Technical Advisor. But I have also been overcome by the need to be in the Alps 😊

I'm a little puzzled where the DT is going. There seems to be a lot of pulling in different directions from the members of the team with some talking about making a "Northbound Interface" for requesting/managing slices, and some talking about a framework that describes what slicing is (presumably from the perspective of the IP network and not the 5G service). Even some of the team got so excited that they posted a "design team" draft that wasn't a design team draft!

You're no doubt aware of draft-ietf-teas-enhanced-vpn. I've been trying to nurture this and direct the authors to do good things with it. The document is not a technology solution, but a set of observations and a framework that explains how the concept of a "slice" looks very much like a VPN (in that it is a connectivity service between a set of end points with some guarantee of service) but offers more specific service behaviours.

I would like not to get into an "arms race" between this draft and the output of the Design Team where each set of authors updates their document to steal turf from the other: that might produce a lot of good thought and work, but would also involve a fair bit of stress and duplicated effort. Instead there is probably some potential for synergy. But I am struggling to know exactly what the DT is intending to produce. The charter and the most recent status (in Singapore) seems to suggest that the DT is still in the phase of working out what it needs to / should document. 

Any thoughts on a way forward?

Thanks,
Adrian