Re: [Teas] "Hierarchical T-SDN Controller"

Michael,

Are you saying that making this Software Defined Transport Network
(SDTN) Controller would be acceptable?

/Loa

On 2017-07-19 11:02, Scharf, Michael (Nokia - DE/Stuttgart) wrote:
> As a chair in TSV, I can confirm that “transport” is used for L4 “stuff”.
>
>
>
> As far as I can tell, the term “transport network” is not used for L4
> “stuff”.
>
>
>
> Michael
>
>
>
>
>
>
>
> *From:* Jeff Tantsura [mailto:jefftant.ietf@gmail.com]
> *Sent:* Wednesday, July 19, 2017 10:58 AM
> *To:* Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>; Scharf,
> Michael (Nokia - DE/Stuttgart) <michael.scharf@nokia.com>; TEAS WG
> <teas@ietf.org>
> *Subject:* Re: [Teas] "Hierarchical T-SDN Controller"
>
>
>
> dealing with this on daily bases, outside of our, rather small world,
> transport is commonly understood as L4 “stuff”
>
>
>
> Cheers,
>
> Jeff
>
>
>
> *From: *Teas <teas-bounces@ietf.org <mailto:teas-bounces@ietf.org>> on
> behalf of Daniele Ceccarelli <daniele.ceccarelli@ericsson.com
> <mailto:daniele.ceccarelli@ericsson.com>>
> *Date: *Wednesday, July 19, 2017 at 10:49
> *To: *"Scharf, Michael (Nokia - DE/Stuttgart)" <michael.scharf@nokia.com
> <mailto:michael.scharf@nokia.com>>, TEAS WG <teas@ietf.org
> <mailto:teas@ietf.org>>
> *Subject: *Re: [Teas] "Hierarchical T-SDN Controller"
>
>
>
> And on that i totally agree with you.
>
>
>
> …and yes, on the netslices mailing list I was reprimanded by the
> transport ADs for using the term transport for non layer 4 stuff 😊
>
>
>
> BR
> Daniele
>
>
>
> *From:* Teas [mailto:teas-bounces@ietf.org] *On Behalf Of *Scharf,
> Michael (Nokia - DE/Stuttgart)
> *Sent:* mercoledì 19 luglio 2017 10:41
> *To:* Daniele Ceccarelli <daniele.ceccarelli@ericsson.com
> <mailto:daniele.ceccarelli@ericsson.com>>; TEAS WG <teas@ietf.org
> <mailto:teas@ietf.org>>
> *Subject:* Re: [Teas] "Hierarchical T-SDN Controller"
>
>
>
> Well, the IETF has an area called “TSV” and so in the IETF “transport”
> has yet another meaning ;-)
>
>
>
> Given that, such terminology would have to be defined in IETF documents
> anyway. A definition of these terms could clarify the meaning for
> MPLS-TE and SR-TE.
>
>
>
> Anyway, my key point is that I think the terminology used by
> draft-bryskin-te-topo-and-tunnel-modeling-00 is easy to understand by
> people outside the IETF.
>
>
>
> Michael
>
>
>
>
>
>
>
> *From:* Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
> *Sent:* Wednesday, July 19, 2017 10:28 AM
> *To:* Scharf, Michael (Nokia - DE/Stuttgart) <michael.scharf@nokia.com
> <mailto:michael.scharf@nokia.com>>; TEAS WG <teas@ietf.org
> <mailto:teas@ietf.org>>
> *Subject:* RE: "Hierarchical T-SDN Controller"
>
>
>
> +1 , BUT…
>
>
>
> We need to be careful with the word “transport”. In some contexts it
> refers to pure transport technologies (e.g. OTN, WDM) and does not
> include other upper layer TE technologies (e.g. MPLS-TE and SR-TE), in
> other contexts it includes also the latter.
> I’m more than happy to use the term transport SDN controller provided
> we’re all on the same page (which should be the second).
>
>
>
> BR
> Daniele
>
>
>
>
>
>
>
> *From:* Teas [mailto:teas-bounces@ietf.org] *On Behalf Of *Scharf,
> Michael (Nokia - DE/Stuttgart)
> *Sent:* mercoledì 19 luglio 2017 10:01
> *To:* TEAS WG <teas@ietf.org <mailto:teas@ietf.org>>
> *Subject:* [Teas] "Hierarchical T-SDN Controller"
>
>
>
> In the (useful) I-D draft-bryskin-te-topo-and-tunnel-modeling-00,
> Section 1.9. “Multi-Domain Transport Service Coordination” uses the
> following wording:
>
>
>
>    A client of multiple TE network domains may need to
>
>    orchestrate/coordinate its transport service setup/manipulation
>
>    across some or all the domains. One example of such a client is a
>
>    Hierarchical T-SDN Controller, HC, managing a connected multi-domain
>
>    transport network where each of the domains is controlled by a
>
>    separate Domain T-SDN Controller, DC.
>
>
>
> Outside the IETF, I have the impression that this terminology is quite
> common when discussing TEAS YANG models. I wonder whether we could use
> this terminology more frequently inside in TEAS.
>
>
>
> Michael
>
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-- 

Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64