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 comments. For more information, please see the FAQ at . Document: draft-ietf-idr-bgp-prefix-sid-21 Reviewer: Peter Yee Review Date: 2018-06-12 IETF LC End Date: 2018-06-12 IESG Telechat date: Not scheduled for a telechat Summary: This document is ready for publication, although there are a few nits that should be corrected prior to publication. I am not a routing expert, so I cannot vouch for the correctness of this specification, but it otherwise appears consistent and reflect s the many iterations it has undergone. Major issues: None. Minor issues: None Nits/editorial comments: General: Expand uncommon acronyms on first use. (See: https://www.rfc-editor.org/materials/abbrev.expansion.txt.). Acronyms need expansion include: AS, ECMP, and EBGP. Specific: Page 3, 7th paragraph, last sentence: actually, this isn’t a complete sentence. I’m not sure what you wanted to do with the fragment. Page 5, 2nd full paragraph, last sentence: change “prefix-SID” to “BGP Prefix-SID” to make usage in the remainder of the document. Page 7, Section 3.2, 2nd bullet item: insert “positive” before “multiple”. Page 9, last paragraph, 1st sentence: delete “to”. Page 12, 1st paragraph after the (unlabeled) Value/Type/Reference table, last sentence: insert “ Prefix” before “-SID”. Page 12, 2nd paragraph after the (unlabeled) Value/Type/Reference table, last sentence: insert “ Prefix” before “-SID”.