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The Locator/ID Separation Protocol Internet Groper (LIG)
RFC 6835

Internet Engineering Task Force (IETF)                      D. Farinacci
Request for Comments: 6835                                      D. Meyer
Category: Informational                                    Cisco Systems
ISSN: 2070-1721                                             January 2013

        The Locator/ID Separation Protocol Internet Groper (LIG)

Abstract

   A simple tool called the Locator/ID Separation Protocol (LISP)
   Internet Groper or 'lig' can be used to query the LISP mapping
   database.  This document describes how it works.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6835.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Farinacci & Meyer             Informational                     [Page 1]
RFC 6835               LISP Internet Groper (LIG)           January 2013

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Definition of Terms  . . . . . . . . . . . . . . . . . . . . .  3
   3.  Basic Overview . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  Implementation Details . . . . . . . . . . . . . . . . . . . .  6
     4.1.  LISP Router Implementation . . . . . . . . . . . . . . . .  6
     4.2.  Public Domain Host Implementation  . . . . . . . . . . . .  8
   5.  Testing the ALT  . . . . . . . . . . . . . . . . . . . . . . .  9
   6.  Future Enhancements  . . . . . . . . . . . . . . . . . . . . . 10
   7.  Deployed Network Diagnostic Tools  . . . . . . . . . . . . . . 10
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 11
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 11
   Appendix A.  Acknowledgments . . . . . . . . . . . . . . . . . . . 12

1.  Introduction

   The Locator/ID Separation Protocol [RFC6830] specifies an
   architecture and mechanism for replacing the addresses currently used
   by IP with two separate namespaces: Endpoint IDs (EIDs), used within
   sites, and Routing Locators (RLOCs), used on the transit networks
   that make up the Internet infrastructure.  To achieve this
   separation, LISP defines protocol mechanisms for mapping from EIDs to
   RLOCs.  In addition, LISP assumes the existence of a database to
   store and propagate those mappings globally.  Several such databases
   have been proposed, among them: a Content distribution Overlay
   Network Service for LISP [LISP-CONS], a Not-so-novel EID-to-RLOC
   Database (LISP-NERD) [RFC6837], and LISP Alternative Topology (LISP+
   ALT) [RFC6836], with LISP+ALT being the system that is currently
   being implemented and deployed on the pilot LISP network.

   In conjunction with the various mapping systems, there exists a
   network-based API called LISP Map-Server [RFC6833].  Using Map-
   Resolvers and Map-Servers allows LISP sites to query and register
   into the database in a uniform way independent of the mapping system
   used.  Sending Map-Requests to Map-Resolvers provides a secure
   mechanism to obtain a Map-Reply containing the authoritative EID-to-
   RLOC mapping for a destination LISP site.

   The 'lig' is a manual management tool to query the mapping database.
   It can be run by all devices that implement LISP, including Ingress
   Tunnel Routers (ITRs), Egress Tunnel Routers (ETRs), Proxy-ITRs,
   Proxy-ETRs, Map-Resolvers, Map-Servers, and LISP-ALT Routers, as well
   as by a host system at either a LISP-capable or non-LISP-capable

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