I am the assigned Gen-ART reviewer for this draft. The General Area Review Team (Gen-ART) reviews all IETF documents being processed by the IESG for the IETF Chair. Please treat these comments just like any other last call comment. For background on Gen-ART, please see the FAQ at <http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq> Document: draft-ietf-trill-channel-tunnel-09 Reviewer: Peter Yee Review Date: July 1, 2016 IETF LC End Date: July 1, 2016 IESG Telechat date: July 7, 2016 Summary: This draft is basically ready for publication as a Proposed Standard, but has some nits that should be fixed before publication. [Ready with nits] This draft extends TRILL RBridge Channels so that they can transmit additional, tunneled message types. Security services for RBridge Channel messages can be provisioned via RFC 5310 authentication and/or DTLS. The draft is well-written and easy to understand in the larger TRILL context. Major issues: None Minor issues: None Nits: General: For cases of "[RFC5310] Based authentication" to "[RFC5310]-based authentication". Watch for one instance of "RFC 5310 Based" as well. Specific: Page 3, Section 1, 1st paragraph, last sentence: delete the comma following "link". Page 4, "HKDF" definition: Change "Hash based" to "HMAC-based". Page 4, "MTU" definition: add a period at the end of the definition for consistency. Page 4, "Sz" definition: change "Campus wide" to "Campus-wide". Page 6, 1st full paragraph, 1st sentence: suggest changing "RBridge Channel Extension Protocol" to "Extended RBridge Channel Protocol" as this is the usage throughout the rest of the document. Page 8, Section 3.1, 3rd sentence: insert "tunneled" before "data". I hope this will help clarity when referring back to Figure 2.4 which includes "Tunneled Data". Page 8, Section 3.2, 1st sentence: append "(tunneled data)" after "payload". This is done for the same reason, although I'm not recommending doing this for all further occurrences of "payload" in other sections as I hope the connection is made by that point. Page 12, 1st paragraph, 1st sentence: change "link local" to "link-local". Page 12, 1st paragraph, 2nd sentence: change "These constructed addresses" to "A constructed address". Page 14, Section 4, 2nd paragraph, 1st sentence: change "use" to "used". Page 14, Section 4, 3rd paragraph, 1st sentence: change "DTLS based" to "DTLS-based". Page 14, Section 4, 4th paragraph, 2nd sentence: change "data accessible" to "data-accessible". Page 15, 1st partial paragraph, last sentence: insert "the" before "output-derived". Page 16, 1st bullet item: change "or" to "on". Page 17, 1st paragraph: delete the comma after "keying". Page 18, 2nd full paragraph, last sentence: change "secuirty" to "security". Page 20, Section 6.2, 1st paragraph: change "a" to "an". Page 21, Section 7, 3rd paragraph, 2nd sentence: delete "processing of". Or change "processing" to "process".