The IESG has approved the following document: - 'TRILL Distributed Layer 3 Gateway' (draft-ietf-trill-irb-14.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-irb/ Technical Summary TRILL provides optimum routing for layer 2 traffic. A centralized gateway solution is typically used for layer 3 inter-subnet traffic forwarding in a TRILL campus but has the following issues: 1. Sub-optimum forwarding paths for inter-subnet traffic. 2. A centralized gateway may need to support a very large number of gateway interfaces in a data center, one per tenant per data label used by that tenant, to provide interconnect functionality for all the layer 2 virtual networks in a TRILL campus. 3. A traffic bottleneck at the gateway. This document specifies an optional TRILL distributed gateway solution that resolves these centralized gateway issues. Working Group Summary There has been good support from the working group to advance this work. There have been no changes in the concept or basic architecture since it was adopted as a WG draft. This document isn't strictly in the charter, but there was support and it is a useful idea. I asked the IESG about a year ago, when I was consulted and read it, whether it was better to progress as an AD-sponsored draft or as a WG draft and there was agreement for it to go as a WG draft with the associated review. Document Quality This document is of high quality. It has received numerous reviews including the RTG DIR QA review here: http://www.ietf.org/mail-archive/web/trill/current/msg07133.html Implementations are planned by IPinfusion and Huawei. Personnel Document Shepherd: Donald Eastlake Responsible Area Director: Alia Atlas WG Chairs: Jon Hudson, Sue Hares
