The IESG has approved the following document: - 'TRILL: Header Extension' (draft-ietf-trill-rbridge-extension-05.txt) as Proposed Standard This document is the product of the Transparent Interconnection of Lots of Links Working Group. The IESG contact persons are Ralph Droms and Brian Haberman. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-trill-rbridge-extension/ Technical Summary The IETF TRILL (Transparent Interconnection of Lots of Links) base protocol specifies minimal hooks to safely support TRILL Header extensions. This document specifies an initial extension providing additional flag bits and specifies two of those bits, plus the Critical Channel Alert Flag used by the channel draft. Working Group Summary There was rough consensus in the working group in favor of the document, with one relatively strong dissenter. The main point of the dissenter was that the material in this draft is not needed to provide an RBridge channel that can be used for BFD and error reporting, hence the extensions are speculative on future standardization that would make use of them. The WG neverless wants to proceed with this document. Document Quality The document has been carefully reviewed in the WG and by the document shepherd. There are no known implementations of the additional Critical Channel Alert Flag specified in this document. Personnel Erik Nordmark is the Document Shepherd. Ralph Droms is the responsible Area Director.