Early Review of draft-ietf-manet-dlep-ether-credit-extension-02
review-ietf-manet-dlep-ether-credit-extension-02-tsvart-early-black-2023-12-19-00

This Internet-Draft is part of a cluster of four that specify credit-based flow control extensions to the DLEP (RFC 8175) router-modem protocol. TSVART Early Review for the other three drafts (draft-ietf-manet-dlep-credit-flow-control-, draft-ietf-manet-dlep-traffic-classification-, draft-ietf-manet-dlep-da-credit-extension-) was requested in October 2021. The assigned reviewer was David Black. He did a thorough job and provided good comments, some of which remain to be resolved. After a considerable hiatus, author(s) and document shepherd aim to finally address these. In addition, we humbly request this fourth document to be subjected to TSVART Early Review, preferably assigned to the same reviewer. One issue raised as part of the earlier review was, that the split into three (now four) documents resulted in one very short document, draft-ietf-manet-dlep-da-credit-extension-, which basically just defines a single DLEP Extension Type value. Merging of draft-ietf-manet-dlep-da-credit-extension- and draft-ietf-manet-dlep-traffic-classification- was suggested. The current document, draft-ietf-manet-dlep-ether-credit-extension-, specifies an alternate credit window mechanism (and Extension Type) to draft-ietf-manet-dlep-da-credit-extension-, based on IEEE 802.1Q tags instead of DiffServ CodePoints. It is just as short as its DSCP-based counterpart. The WG's rationale for keeping the document division the way it is, can be found in the shepherd write-ups for each of the three earlier I-Ds, e.g., https://datatracker.ietf.org/doc/draft-ietf-manet-dlep-da-credit-extension/shepherdwriteup/, in the answers to question 2.