Hi Shahram, Thanks for the prompt response. I would suggest to add some text to explain the scope of this draft in the context of NTP, i.e., your explanation below.
A question to the WG chairs: if NTP TCs are indeed on the agenda, wouldn't it be best to define these entities in parallel to the MPLS draft? It seems more natural, and more likely to produce a coherent mechanism. Thanks, Tal. ________________________________________ From: Shahram Davari [[email protected]] Sent: Monday, October 22, 2012 6:46 PM To: Tal Mizrahi; [email protected] Cc: [email protected]; [email protected] Subject: RE: [TICTOC] I-D Action: draft-ietf-tictoc-1588overmpls-03.txt Hi Tal, If you recall the Area director asked for generalizing this draft to NTP and other possible future Timing methods such as a Shim header that can carry Timing. I know NTP does not have TC, but IETF may add TC in future. Also on the egress LER the timing Label (defined in the draft) may be used as an indicator to sample ToD at the port level. Thanks Shahram -----Original Message----- From: Tal Mizrahi [mailto:[email protected]] Sent: Monday, October 22, 2012 7:47 AM To: [email protected] Cc: [email protected]; [email protected] Subject: RE: [TICTOC] I-D Action: draft-ietf-tictoc-1588overmpls-03.txt Hi Shahram et al. What is the motivation for adding NTP to this draft? Are we planning to define something similar to a correctionField in NTP? Regards, Tal. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, October 22, 2012 10:28 AM To: [email protected] Cc: [email protected] Subject: [TICTOC] I-D Action: draft-ietf-tictoc-1588overmpls-03.txt A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Timing over IP Connection and Transfer of Clock Working Group of the IETF. Title : Transporting Timing messages over MPLS Networks Author(s) : Shahram Davari Amit Oren Manav Bhatia Peter Roberts Laurent Montini Filename : draft-ietf-tictoc-1588overmpls-03.txt Pages : 36 Date : 2012-10-22 Abstract: This document defines the method for transporting Timing messages such as PTP and NTP over an MPLS network. The method allows for the easy identification of these PDUs at the port level to allow for port level processing of these PDUs in both LERs and LSRs. The basic idea is to transport Timing messages inside dedicated MPLS LSPs. These LSPs only carry timing messages and possibly Control and Management packets, but they do not carry customer traffic. Two methods for transporting Timing messages over MPLS are defined. The first method is to transport Timing messages directly over the dedicated MPLS LSP via UDP/IP encapsulation, which is suitable for MPLS networks. The second method is to transport Timing messages inside a PW via Ethernet encapsulation, which is suitable for both MPLS and MPLS-TP networks. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-tictoc-1588overmpls There's also a htmlized version available at: http://tools.ietf.org/html/draft-ietf-tictoc-1588overmpls-03 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-ietf-tictoc-1588overmpls-03 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ TICTOC mailing list [email protected] https://www.ietf.org/mailman/listinfo/tictoc _______________________________________________ TICTOC mailing list [email protected] https://www.ietf.org/mailman/listinfo/tictoc
