The IESG has approved the following document: - 'Signaling MSD (Maximum SID Depth) using IS-IS' (draft-ietf-isis-segment-routing-msd-18.txt) as Proposed Standard This document is the product of the Link State Routing Working Group. The IESG contact persons are Alvaro Retana, Martin Vigoureux and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-isis-segment-routing-msd/ Technical Summary This document defines a way for an Intermediate System to Intermediate System (IS-IS) Router to advertise multiple types of supported Maximum SID Depths (MSDs) at node and/or link granularity. Such advertisements allow entities (e.g., centralized controllers) to determine whether a particular SID stack can be supported in a given network. Working Group Summary Nothing to highlight; normal process. Document Quality This document has been a WG document for over a year (and has existed for over 2 yars) and has been regularly revised and well reviewed. Personnel Shepherd: Christian Hopps AD: Alvaro Retana IANA Note Designated Experts for the new "IGP MSD Types" registry are: Uma Chunduri (uma.chunduri@huawei.com) and Jeff Tantsura (jefftant.ietf@gmail.com).