The IESG has approved the following document: - 'TRILL Multilevel Using Unique Nicknames' (draft-ietf-trill-multilevel-unique-nickname-07.txt) as Proposed Standard This document is the product of the Transparent Interconnection of Lots of Links Working Group. The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-trill-multilevel-unique-nickname/ Technical Summary TRILL routing can be extended to support multiple levels by building on the multilevel feature of IS-IS routing. Depending on how nicknames are managed, there are two primary alternatives to realize TRILL multilevel: the unique nickname approach and the aggregated nickname approach as discussed in [MultiL]. This document specifies a unique nickname approach. This approach gives unique nicknames to all TRILL switches across the multilevel TRILL campus. Working Group Summary Consensus strong on this methodology. A word on TRILL WG: TRILL working worked on the multi-level, multiple topology work item together over the last 3+ years. The WG operates with high discussion level at IETFs for these new features, and individuals working hard on drafts between time. During the last 12 months, early drafts in the multi-level, multiple topology (E.g. RFC8243) have been approved. Document Quality Huawei and IPInfusion have TRILL implementations, Scaling work was engaged in to aid long-term growth. No implementations of this draft have been done. On responses about known IPR by authors, Honjun Zhai did reply on Feb 9 and Donald forwarded Dongxin Liu's email reply to the trill mailing list on Feb 20. Personnel Document Shepherd: Susan Hares AD: Alia Atlas
