This document is well written and clear for its scope.

This I-D, together with draft-ietf-manet-dlep-credit-flow-control and draft-ietf-manet-dlep-traffic-classification, specify a DiffServ-aware credit window based flow control scheme as a new extension to DLEP (RFC 8175).

From an OPSDIR point of view, the document includes a dedicated section on Management Considerations.
Since I also looked at the companions draft-ietf-manet-dlep-credit-flow-control and draft-ietf-manet-dlep-traffic-classification, I think that some details about the implementation can be provided.
It would be good to mention or give examples on how the different parameters can be configured and how the information can possibly be exported.
This suggestion mainly applies to the companion documents, which are normative references for this I-D.

As an editorial comment for this I-D, you can consider to include a figure with the Extension Data Item or you can simply add a reference to section 13.6 of RFC 8175 somewhere.