March 2010 - nml-wg - lists.ogf.org

Informational Doc on translating NM-WG - NML
by Jeroen van der Ham 19 Apr '10

19 Apr '10

Hello, As some of you know, I've worked several weeks at Internet2 last year. While I was there, we worked on translating between the format the DICE IDC uses and NDL. I've written a report on this, detailling the translation and highlighting some issues that we encountered while implementing the translation. The document can be found at:http://staff.science.uva.nl/~vdham/research/publications/DCN-NDL-Translation.pdf I would like to submit this to the OGF as an informational document. I can do this personally, or from the NML WG. I would prefer the latter, does anyone disagree? Jeroen.

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Minutes of the NML sessions
by Jeroen van der Ham 17 Mar '10

17 Mar '10

Hello, I've uploaded the minutes of the NML sessions to the Forge: http://forge.ogf.org/sf/docman/do/listDocuments/projects.nml-wg/docman.root… We have made some good progress, but we have some next actions to finalize everything and keep the progress going: Summary of next actions: * Freek and Jeroen will prepare a new proposal on Layer definition * Jerry and Freek will further clarify Adaptations in the schema doc * Martin will investigate whether the Service concept is related to the GLUE schema concept of a Service * Inder and Jeroen will add the agreed definition of Topology, NetworkDomain and PolicyDomain to the schema doc * Freek and Jeroen will add the agreed definitions of AdaptationType, AdaptationService, Adaptation to the schema doc * Martin will add the agreed defintion of Service to the schema doc * Chin and Martin will prepare definitions of Link/Path/Segment * Jerry, Pascal/Sebastien and Freek will prepare definitions of SwitchMatrix and TransferFunction Service Example Volunteers (from OGF27): * Adaptation Service - Jeroen * Switching Matrix Service - Jeroen * Segment Concatenation Service - John * Multicast Service - Petr * Label Conversion Service - Freek * Data Transport Service - Freek * Measurement Point Service * Virtualization Service * Lookup Service - Gigi * Path Finding Service Jeroen.

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Adaptation Algebra
by Freek Dijkstra 16 Mar '10

16 Mar '10

Hi Jerry (and others), My apology for some blatant self-references. During today's NML discussion, you toyed with the idea of defining transfer functions as algebraic functions. We in fact did that, using the Identity function for links and regular functions for adaptation and inverse functions for de-adaptation. Here is the paper: http://dx.doi.org/10.1016/j.comnet.2008.02.013 or http://staff.science.uva.nl/~fdijkstr/publications/G805_Multilayer_Model.pdf A slightly revised version is found in chapter 4 of my thesis: http://www.macfreek.nl/work/ Although I do not see practical use in an OGF standard, it was a nice exercise. If you are interested, I recommend you contact Cees de Laat; the ideas in those papers led to the idea of using Prolog for path finding, and his group is still actively looking into the exact logic that underly path finding algorithms. Regards, Freek

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Slides
by Freek Dijkstra 16 Mar '10

16 Mar '10

I uploaded the introductory slides for the NML-WG: http://forge.gridforum.org/sf/docman/do/listDocuments/projects.nml-wg/docma… I will upload a PDF version after the session is finished. The proposed agenda is as follows: Session 1 (15:00-16:30): 15:00 Agenda & note taker & Overview 15:10 Network concepts proposal 15:20 Adaptation concepts proposal 15:30 Addenda to & vote on proposals 16:00 NSI Request on Network Topology – John Vollbrecht Session 2 (17:00-18:30): 17:00 Discussion on cross-connects (configuration) 17:30 Discussion on links and channels 18:00 Discussion on end-to-end path Regards, Freek

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Group meeting at 10h30
by Cees de Laat 16 Mar '10

16 Mar '10

Sorry for sending this again, previous mail was send from private address and bounced at ghpn mailing list. So, I invite you to yell at me for spamming in the upcoming ghpn session :-) Dear *, I want to bring to your attention the GHPN meeting later this morning 10h30 at HGB-A-022. The agenda: Tuesday Mar. 15th, 10h30 – 12h30 - Agenda Bashing - Status of documents in the RG - Victor Reijs - Victor Reijs from HEANET has been working on a solution to the path computation in multi-layer technology networks. This work proposes an alternative solution to the one proposed by Freek Dijkstra in his PhD thesis. - This presentation will take about one hour including demonstrations. - Discussion about possible work/research items for OGF. - Any Other Subject - Adjourn Best regards, Cees.

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Group meeting at 10h30
by Cees de Laat 16 Mar '10

16 Mar '10

Dear *, I want to bring to your attention the GHPN meeting later this morning 10h30 at HGB-A-022. The agenda: Tuesday Mar. 15th, 10h30 – 12h30 - Agenda Bashing - Status of documents in the RG - Victor Reijs - Victor Reijs from HEANET has been working on a solution to the path computation in multi-layer technology networks. This work proposes an alternative solution to the one proposed by Freek Dijkstra in his PhD thesis. - This presentation will take about one hour including demonstrations. - Discussion about possible work/research items for OGF. - Any Other Subject - Adjourn Best regards, Cees.

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Request for NML help
by John Vollbrecht 12 Mar '10

12 Mar '10

Attached is a powerpoint description of NSI network concepts. It raises questions about how to describe topology for these concepts. I am wondering if it would be possible to present this and discuss it at an NML session next week. Sorry for the late submission. If it is not possible at a session perhaps we can find some time between sessions. Thanks John

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Deliverables
by Freek Dijkstra 12 Mar '10

12 Mar '10

FYI, Deliverable #1 has received the identifier GFD.165 and is now officially published: http://www.ogf.org/gf/docs/?final Also, Jeroen's changes to deliverable #2 in the TeX source are now also present in the PDF itself: http://forge.gridforum.org/sf/docman/do/viewDocument/projects.nml-wg/docman… Regards, Freek

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[Nsi-wg] Field trip to BMW Munich Plant tour Munich Fri (3/19)
by Jeroen van der Ham 09 Mar '10

09 Mar '10

Hi all, There are a few of us that are planning to visit the BMW Munich Plant <http://www.bmw-plant-munich.com>on Friday (Mar 19) after OGF. If there is enough of us (> 16), it would be more economical to book a private tour. The private tour will cost 100 euro and can accommodate up to 30 people. So far, we have 3 folks: Chin Guok Jeroen van der Ham Inder Monga If you would like to join us, please reply to this email and I'll keep a running tally. There is also a BMW Museum tour <http://www.bmw-museum.com> if folks are interested. Thanks! Jeroen.

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Proposals in document
by Freek Dijkstra 03 Mar '10

03 Mar '10

Inder, Jeroen, (and also to myself), Thank you once more for the proposal definitions on domain/topology and adaptation respectively. Could I ask for one more bit of your time? It would be beneficial for the discussions at OGF28 if these definitions are in the proposal by March 6th. Especially the proposal on domain/topology is "good enough" to be solidified in our deliverable. I'm certain that more discussion will pop up by the time we are going to created classes and attributes of these terms. I would very much appreciate it if you can copy and paste these definitions. If not, just let me know and I'll ask for another volunteer. The base document can be found at the svn repository: http://forge.gridforum.org/sf/scm/do/listRepositories/projects.nml-wg/scm The emails with the proposals are here: http://www.ogf.org/pipermail/nml-wg/2010-February/000444.html http://www.ogf.org/pipermail/nml-wg/2010-January/000438.html Regards, Freek

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