The IESG has approved the following document: - 'LISP Delegated Database Tree' (draft-ietf-lisp-ddt-09.txt) as Experimental RFC This document is the product of the Locator/ID Separation Protocol Working Group. The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-lisp-ddt/ Technical Summary The document describes the LISP Delegated Database Tree (LISP-DDT), a distributed hierarchical mapping database. LISP-DDT is composed of servers (DDT nodes) organised as a hierarchical tree, based on EID namespace delegation. Every DDT node, from the root to the leafs, is authoritative for a set of EID-prefixes. To each EID-prefix is associated either a set of RLOCs or child DDT nodes to which more specific EID-prefixes are delegated. Each LISP-DDT node can be queried using Map-Request messages [RFC6830]. The node will reply either with a Map-Reply message [RFC6830], carrying the the set of RLOCs associated to the prefix, or with a Map-Referral (Defined in this document), indicating the DDT nodes that are authoritative for a more specific EID-prefix covering the requested EID. Working Group Summary The document received a strong support from the WG from the very beginning, and actually the design of the system is the result of a strong collaboration among WG participants. The version of the document that was approved during WG Last Call is -03. As a shepherd I required a few editorial changes to the document. This delayed the document since the main author did not have time anymore to updated the document. (The document actually expired.) A new author joined the team recently and after a couple of updates the document is ready to go further. Document Quality There are two independent and inter-operable implementations of the proposed hierarchical distributed database and lookup mechanisms. Personnel Who is the Document Shepherd for this document? Luigi Iannone Who is the Responsible Area Director? Deborah Brungard
