The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] [mpls] ITU SG15 Q12 Liaison Progress on G.8110.1 Amendment
To ITU SG15 CC ITU SG13 For Action The PWE3 and MPLS WGs have studied ITU SG15 Q12 Liaison Progress on G.8110.1 Amendment https://datatracker.ietf.org/public/liaison_detail.cgi?detail_id=312 and have the following comments on the document: Section 3.5 Transport MPLS definition Should be amended to make it clear TMPLS is a true subset of IETF PWE3 over MPLS and that in the case of any differences, the IETF definition is considered the Normative definition. Section 4.7.2 and A.3 The PWE3 WG is concerned that the OAM is not based on VCCV. Any true subset of the IETF PWE3/MPLS design should allow the use of the IETF preferred OAM mechanism. This does not preclude the ITU specifying an additional mechanism as an optional extension to enhance VCCV, although it would be preferable for the ITU to work with the IETF to enhance VCCV to provide the additional OAM mechanisms that are needed. The PWE3 WG is not clear how you determine that the client signal is not present when the client is a packet service. Section 4.10 "– Minimize the rerouting distance (to avoid physical layer impairments on the signals)." We do not understand why in a well engineered network the distance in the virtual layer providing reroute has impact results in physical layer impairments Appendix V The introductory material to Appendix V states that it will be re-written at some time in the future to align with the IETF work on p2mp LSPs. We would therefore request that you liaise the final text to us when it is completed. As it stands the text of Appendix V looks correct, however we do have two proposals that we would ask you consider 1. We recommend that Upstream Assigned Labels be used over P2MP connections, or at least that you note in the text that generally administration of labels is simplified by using upstream assignment in this scenario. 2. That you include a reference to RFC 4875 (RSVP-P2MP) as this discusses many issues pertaining to P2MP MPLS connections. The PWE3 and MPLS WGs will meet at IETF69 on 22 July 2007, and we would request a response in time for us to consider at the meeting. Regards Stewart Bryant on behalf of IETF PWE3 and MPLS Co-chairs _______________________________________________ mpls mailing list mpls@lists.ietf.org https://www1.ietf.org/mailman/listinfo/mpls
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