%% You should probably cite rfc5283 instead of this I-D. @techreport{ietf-mpls-ldp-interarea-04, number = {draft-ietf-mpls-ldp-interarea-04}, 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-ldp-interarea/04/}, author = {Ina Minei and Jean-Louis Le Roux and Bruno Decraene}, title = {{LDP Extension for Inter-Area Label Switched Paths (LSPs)}}, pagetotal = 12, year = 2008, month = jun, day = 18, abstract = {To facilitate the establishment of Label Switched Paths (LSPs) that would span multiple IGP areas in a given Autonomous System (AS), this document describes a new optional Longest-Match Label Mapping Procedure for the Label Distribution Protocol (LDP). This procedure allows the use of a label if the Forwarding Equivalence Class (FEC) Element matches an entry in the Routing Information Base (RIB). Matching is defined by an IP longest-match search and does not mandate an exact match. {[}STANDARDS-TRACK{]}}, }