%% You should probably cite rfc9658 instead of this I-D. @techreport{ietf-mpls-mldp-multi-topology-09, number = {draft-ietf-mpls-mldp-multi-topology-09}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-mpls-mldp-multi-topology/09/}, author = {IJsbrand Wijnands and Mankamana Prasad Mishra and Syed Kamran Raza and Zhaohui (Jeffrey) Zhang and Arkadiy Gulko}, title = {{mLDP Extensions for Multi-Topology Routing}}, pagetotal = 16, year = 2024, month = may, day = 21, abstract = {Multi-Topology Routing (MTR) is a technology to enable service differentiation within an IP network. Flexible Algorithm (FA) is another mechanism of creating a sub-topology within a topology using defined topology constraints and computation algorithm. In order to deploy mLDP (Multipoint label distribution protocol) in a network that supports MTR, FA, or other methods of signaling non-default IGP algorithms, mLDP is required to become topology and algorithm aware. This document specifies extensions to mLDP to support MTR, with an algorithm, in order for Multipoint LSPs(Label Switched Paths) to follow a particular topology and algorithm. It updates {[}RFC7307{]} by allocating eight bits from a previously reserved field to be used as the IGP Algorithm (IPA) field.}, }