Hi Shahram,
Absolutely, the solution described in this draft does not aim at addressing all possible use cases. Other solutions, like the ones described in your draft “Transporting PTP messages (1588) over MPLS Networks”, are also valid and may be more adapted to specific scenarios. Note that, in theory, it might be possible to use a link local addressing solution with multiple timing domains, assuming that multiple instances of BCs or TCs (one per domain) are implemented in the intermediate network nodes. I agree however that this may not be the simplest solution from the implementation perspective. The major reason that I wrote this draft was to introduce this second flavor of solutions, and to highlight the fact that carrying PTP messages over MPLS networks is possible without necessarily using an MPLS tunnel. Thanks. BR, Sébastien De : Shahram Davari [mailto:[email protected]] Envoyé : mercredi 7 mars 2012 15:29 À : JOBERT Sebastien RD-CORE-LAN; '[email protected]'; '[email protected]' Objet : Re: [TICTOC] TICTOC meeting at IETF-83 Sebastien, You probably know that Your proposed method can't support tunneling multiple 1588 flows belonging to multiple customers or domains. Regards Shahram From: [email protected] [mailto:[email protected]] Sent: Wednesday, March 07, 2012 01:51 AM To: [email protected] <[email protected]>; [email protected] <[email protected]> Subject: Re: [TICTOC] TICTOC meeting at IETF-83 Hi, I have uploaded a draft which discussed the topic of PTP over MPLS networks: http://www.ietf.org/id/draft-jobert-tictoc-ptp-link-local-00.pdf http://www.ietf.org/id/draft-jobert-tictoc-ptp-link-local-00.txt Abstract This document introduces a method for transporting PTP messages over an MPLS network supported by an Ethernet physical layer. The MPLS layer itself is not used to carry the PTP messages with this method; instead, a link local Ethernet channel is used. Several advantages related to this method are highlighted in this document. The method targets in particular telecom applications requiring accurate phase/time synchronization, with "link-by-link" PTP architectures, where all the network nodes support a PTP function, such as Boundary Clock or Transparent Clock. Any comment is welcome. Yaakov, as I told you by email, I would like if possible to briefly introduce this draft during the TICTOC meeting (I guess that 10 min will be sufficient). I think it is connected in a way to the topic discussed in the draft “draft-ietf-tictoc-1588overmpls-02” Thanks. BR, Sébastien De : [email protected] [mailto:[email protected]] De la part de Yaakov Stein Envoyé : mardi 6 mars 2012 17:50 À : [email protected] Objet : [TICTOC] TICTOC meeting at IETF-83 Hi all, Please note that the TICTOC session is early Monday morning, so make your travel plans accordingly. I have uploaded a preliminary agenda to the meeting site http://www.ietf.org/proceedings/83/agenda/agenda-83-tictoc.txt If you believe that additional items need to be discussed, please email the chairs. Y(J)S
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