The IESG has approved the following document: - 'OWAMP and TWAMP Well-Known Port Assignments' (draft-ietf-ippm-port-twamp-test-04.txt) as Proposed Standard This document is the product of the IP Performance Measurement Working Group. The IESG contact persons are Mirja Kühlewind and Spencer Dawkins. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-ippm-port-twamp-test/ Technical Summary This memo explains the motivation and describes the re-assignment of well-known ports for the OWAMP and TWAMP protocols for control and measurement, and clarifies the meaning and composition of these standards track protocol names for the industry. Working Group Summary There was reasonable discussions in the mailing list. A couple of people supported the adoption of this document. There was no objection in the mailing list when the WG chair raised the LC. Document Quality This document request an IANA action and clarifies existing RFCs. Therefore no implementation or additional reviews are needed. Personnel Tianran Zhou is the shepherd. Mirja Kühlewind is the responsible AD.