This document has been reviewed as part of the transport area review team's ongoing effort to review key IETF documents. These comments were written primarily for the transport area directors, but are copied to the document's authors and WG to allow them to address any issues raised and also to the IETF discussion list for information. When done at the time of IETF Last Call, the authors should consider this review as part of the last-call comments they receive. Please always CC tsv-art@ietf.org if you reply to or forward this review. Summary: Ready with Nits 1: The TLV formats in the draft look identical with RFC7471 except the value in Type field. it would be better to clarify this points so that the readers who are familiar with RFC7471 can interpret them easily. I am also wondering if the format figures of TLV are necessary when the same figures are already presented in RFC7471. 2: There is no guidance for default values such as measurement interval in the draft. If these values should also be inherited from other draft, it should be stated. 3: (Editorial) The length of Type filed in the figures look 15 bits length. But, I believe it should be 16 bits.