The IESG has approved the following document: - 'TFTP Windowsize Option' (draft-masotta-tftpexts-windowsize-opt-13.txt) as Proposed Standard This document has been reviewed in the IETF but is not the product of an IETF Working Group. The IESG contact person is Joel Jaeggli. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-masotta-tftpexts-windowsize-opt/ Technical Summary This document describes a TFTP option which allows the client and server to negotiate a window-size of consecutive blocks to send as an alternative for replacing the single block lock-step schema. Activity Summary The Genesis of draft-masotta-tftpexts-windowsize-opt is an involved one. It entered the IETF review process as an individual submission. Concern over interaction with existing IETF standards was identified. As no instance of the working groups in which tftp was advanced still exists, it has been variously sponsored by A Transport Area AD and by an Ops AD. Document Quality This document has over time received extensive scrutiny by the IESG. Review by the transport directorate was solicited and received, resulting in more explicit description of the circuit breaker mechanisms employed with TFTP (which while widely employed a not part of the specification) and some implementation specific values. Security review during IETF LC resulted in draft 11. Personnel Joel Jaeggli is the sponsoring AD.