I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at < http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq> Please resolve these comments along with any other Last Call comments you may receive. Document: draft-ietf-mpls-multipath-use-03 Reviewer: Peter Yee Review Date: January-16-2014 IETF LC End Date: January-17-2014 IESG Telechat date: January-23-2014 Summary: This draft is basically ready for publication as an Informational RFC, but has nits that should be fixed before publication. [Ready with nits.] This document discusses multipath MPLS operations and describes the means of supporting MPLS as a server layer for MPLS-TP and vice versa. It lists requirements and implications for these operations. Nits: General nits: Make all references to the expansion of ECMP read "Equal-Cost Multipath" for consistency with RFC 2991. In the usage RFCxxxx, use a space between RFC and xxxx except when used as a reference, e.g., [RFCxxxx]. There are many unexplained acronyms without definition or reference. Unless these are abundantly clear to most readers, expand them on first usage and provide a reference pointer where feasible. Specific nits: Page 1, Abstract, 2nd paragraph, 1st sentence: change "MPLS Entropy label" to "the MPLS Entropy Label". Page 2, Section 1, 1st paragraph, 1st sentence: delete the comma after "traffic". Page 2, Section 1, 1st paragraph, last sentence: change "load split" to "load splitting". Page 2, Section 1, 2nd paragraph, last sentence: hyphenate "fate sharing". Page 3, Section 1, 1st paragraph, 1st sentence: hyphenate "equal cost". Page 3, definition of "Loop Free Alternate Paths (LFA)": hyphenate "Loop Free". Page 3, definition of "Loop Free Alternate Paths (LFA), 1st sentence: change the terminating period to a colon. Page 4, Section 3.1, 1st paragraph, 1st sentence: change "date" to "data". Page 4, Section 3.1, 1st paragraph, 2nd sentence: change the terminating period to a colon. Page 5, 1st full paragraph, 1st sentence: insert "Section 3.1.1" between "[RFC5960]" and "paragraph 3". Capitalize "paragraph". Page 5, 1st full paragraph, 3rd sentence: same as previous instructions. Page 5, 2nd paragraph, 2nd sentence: change ' "Section 1 Introduction"' to ' Section 1 ("Introduction")'. Page 6, 1st paragraph, 3rd sentence: change ' "Section 2.9.4 Equal Cost Multipath") to ' Section 2.9.4 ("Equal Cost Multipath")'. Page 6, Section 3.2, 1st paragraph, 1st sentence: hyphenate "MPLS-TP conformant" and delete the comma after "multipath". Page 7, 2nd paragraph, 2nd sentence: change "A" to "An". Page 7, 2nd paragraph, 5th and 6th sentences: change all occurrences of "LSP" to "LSPs". Page 7, 3rd paragraph, 2nd sentence: change "LSP" to "LSPs". Page 7, 4th paragraph, 2nd sentence: change "LSR" to "LSRs". Page 7, 5th paragraph: change all occurrences of "LSP" to "LSPs". Page 7, 5th paragraph last sentence: change "co-existance" to "coexistence". Page 8, 1st partial paragraph, 2nd full sentence: change all occurrences of "LSP" to "LPSs" and change "LSR" to "LSRs". Page 8, 2nd full paragraph: change all occurrences of "LSP" to "LSPs". Page 8, 4th paragraph, 1st sentence: change "LSP" to "LSPs". Page 8, 4th paragraph, 2nd sentence: is there a quantitative definition for "very infrequent" that can be substituted or explained? Page 8, 4th paragraph, 3rd sentence: change "presense" to "presence". Insert "a" before "GAL". Page 9, 1st partial paragraph: delete "label" following "EL" in two locations. Page 9, Section 4, 1st paragraph, 1st sentence: change first "LSP" to "LSPs". Change "a MPLS-TP" to "an MPLS-TP" unless MPLS is pronounced liked "mipples" or something similar and not just spelled out. Page 9, Section 4, 2nd paragraph: replace all occurrences of "LSP" with "LSPs". Page 9, Section 4, 2nd paragraph, 2nd sentence: insert "the" between "in" and "number". Page 9, Section 4, 2nd paragraph, 3rd sentence: change "ILM" to "ILMs". Page 9, Section 4, 3rd paragraph, 1st sentence: change "Server Layer" to "server layer" for consistency of usage. Insert "of" between "use" and "MPLS-TP". Change "LSP" to "LSPs". Page 9, Section 4, 3rd paragraph, 4th sentence: change "LSP" to "LSPs". Page 9, Section 4, 3rd paragraph, 5th sentence: change "LSP" to "LSPs". Change "capacity" to "capacities". Insert "generally" before "not integer" unless it is always the case that the capacity is not a multiple of 10 Gb/s. Page 9, Section 4, 4th paragraph, 1st sentence: change "Server Layer" to "server layer". Page 10, Section 6, 2nd paragraph, 2nd sentence: hyphenate "high end" and append a comma after that. Hyphenate "packet processing". Page 10, Section 6, 3rd paragraph, last sentence: same as previous instructions. Page 10, Section 8, 1st sentence: insert "a" between "of" and "framework". I'm not particularly knowledgeable about MPLS, so I'm unable to express much about the correctness of the operational points made in the document. -Peter Yee