I have reviewed this document as part of the Ops area directorate's ongoing effort to review all IETF documents being processed by the IESG.  These comments were written primarily for the benefit of the Ops area directors.
Document editors and WG chairs should treat these comments just like any other last-call comments.

While the document elaborates on how to implement and signal Multi-Topology capabilities in mLDP, it lacks a detailed discussion on scalability. With the introduction of MT, each unique topology-path combination may require a unique FEC. This inherently increases the number of FECs that the LDP must manage. In large networks with multiple topologies, this could lead to a significant increase in the number of FECs. Each topology essentially multiplies the number of potential FECs needed, as separate FECs are necessary for the same network prefix across different topologies.
Addressing how to manage this increase efficiently would be beneficial. It would be nice to add a Management Consideration section to address the compounded scalability concerns when each topology requires potentially unique FECs.

Thank you, 

Linda Dunbar