The IESG has approved the Internet-Draft 'Signalling Unnumbered Links in CR-LDP' <draft-ietf-mpls-crldp-unnum-10.txt> as a Proposed Standard. This document is the product of the Multiprotocol Label Switching Working Group. The IESG contact persons are Scott Bradner and Bert Wijnen. Technical Summary This document defines procedures and extensions to Constraint-Routing Label Distribution Protocol (CR-LDP), one of the MPLS TE signaling protocols, that are needed in order to support unnumbered links. Supporting MPLS TE over unnumbered links (i.e., links that do not have IP addresses) involves two components: (a) the ability to carry traffic engineering (TE) information about unnumbered links in IGP TE extensions (ISIS or OSPF), and (b) the ability to specify unnumbered links in MPLS TE signaling. The focus of this document is on the latter. Working Group Summary The MPLS working group supported publication of this document. Protocol Quality This document was reviewed for the IESG by Scott Bradner.