[Teas] R: Connectivity matrix in draft-ietf-teas-yang-te-topo
"Belotti, Sergio (Nokia - IT)" <sergio.belotti@nokia.com> Mon, 23 May 2016 14:48 UTC
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From: "Belotti, Sergio (Nokia - IT)" <sergio.belotti@nokia.com>
To: Igor Bryskin <Igor.Bryskin@huawei.com>, "Beller, Dieter (Nokia - DE)" <dieter.beller@nokia.com>, Cyril Margaria <cyril.margaria@gmail.com>, Xufeng Liu <xufeng.liu.ietf@gmail.com>
Thread-Topic: [Teas] Connectivity matrix in draft-ietf-teas-yang-te-topo
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Date: Mon, 23 May 2016 14:47:46 +0000
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Cc: TEAS WG <teas@ietf.org>
Subject: [Teas] R: Connectivity matrix in draft-ietf-teas-yang-te-topo
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Hi Igor, I'm a little confused : connectivity matrix is a concept introduced in the WSON context afaik, I do not understand the relationship at OTN/ODUk where we suppose to have no blocking matrix . Probably need to clarify the picture in the coming call. Cheers Sergio Sergio Belotti Da: Teas [mailto:teas-bounces@ietf.org] Per conto di Igor Bryskin Inviato: lunedì 23 maggio 2016 16:25 A: Beller, Dieter (Nokia - DE); Cyril Margaria; Xufeng Liu Cc: TEAS WG Oggetto: Re: [Teas] Connectivity matrix in draft-ietf-teas-yang-te-topo Dieter, Your understanding is correct, and it does not contradict to what Cyril is saying. For example, a connectivity matrix in the OCh layer must provided on a lambda (not link) level. Likewise, as we discussed, in the OTN/ODUk layer the connectivity matrix entry should be specific, generally speaking, to ODU type. As you see, this has nothing to do with the inter-layer relationships. Cheers, Igor From: Dieter Beller [mailto:Dieter.Beller@nokia.com] Sent: Monday, May 23, 2016 10:06 AM To: Igor Bryskin; Cyril Margaria; Xufeng Liu Cc: TEAS WG Subject: Re: [Teas] Connectivity matrix in draft-ietf-teas-yang-te-topo Hi Igor, Cyril, all, fixed client to server mappings is s multi-layer aspect if I'm not wrong. I thought that the connectivity matrix was trying to address abstraction drawbacks within a single network layer, i.e., to provide additional information that would get lost during the abstraction process (example: srlg information associated with the underlying topology that was abstracted into a single node). Thanks, Dieter On 23.05.2016 15:51, Igor Bryskin wrote: Cyril, You are absolutely right. But this belongs to the layer specific augmentations, agreed? On the other hand I do a see a value in adding an abstract label to the connectivity matrix (just like a label object in the TE path), so the basic model will be more complete to address more than one layer. Igor From: Teas [mailto:teas-bounces@ietf.org] On Behalf Of Cyril Margaria Sent: Monday, May 23, 2016 9:41 AM To: Xufeng Liu Cc: TEAS WG Subject: Re: [Teas] Connectivity matrix in draft-ietf-teas-yang-te-topo Hi, Another item that can be considered is to add a Label (Following RFC7579) restrictions. This is needed, for example, in case of Fixed muxponders, where the connectivity between the Low order ODUs to the high-order ODU is fixed on each end. Can it be added to the list of changes for the connectivity matrix? Thanks, Cyril On 16 May 2016 at 09:27, Xufeng Liu <xufeng.liu.ietf@gmail.com<mailto:xufeng.liu.ietf@gmail.com>> wrote: Authors and contributors have discussed the use case of abstract topology, to address the incompleteness of connectivity matrix. Current connectivity modeling is as follows: | +--rw connectivity-matrix* [id] | | +--rw id uint32 | | +--rw from | | | +--rw tp-ref? leafref | | +--rw to | | | +--rw tp-ref? leafref | | +--rw is-allowed? Boolean A Link TP may connect or disconnect to another Link TP, without detailed information such as cost and resource sharing restriction. To get a better abstraction of such connectivity, the following additional attributes are planned to be added: max-bandwidth? decimal64 max-resv-bandwidth? decimal64 unreserved-bandwidth* [priority] priority uint8 +-- bandwidth? decimal64 +-- te-default-metric uint32 performance-metric // re-use the container from te-link-atrributes te-srlgs // re-use the container from te-link-atrributes Comments are welcome. Thanks, - Xufeng _______________________________________________ Teas mailing list Teas@ietf.org<mailto:Teas@ietf.org> https://www.ietf.org/mailman/listinfo/teas _______________________________________________ Teas mailing list Teas@ietf.org<mailto:Teas@ietf.org> https://www.ietf.org/mailman/listinfo/teas
- [Teas] Connectivity matrix in draft-ietf-teas-yan… Xufeng Liu
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Cyril Margaria
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Igor Bryskin
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Cyril Margaria
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Dieter Beller
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Igor Bryskin
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Dieter Beller
- [Teas] R: Connectivity matrix in draft-ietf-teas-… Belotti, Sergio (Nokia - IT)
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Igor Bryskin
- Re: [Teas] Connectivity matrix in draft-ietf-teas… Igor Bryskin