Interworking between Locator/ID Separation Protocol (LISP) and Non-LISP Sites
RFC 6832
Document | Type | RFC - Experimental (January 2013; No errata) | |
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Authors | Darrel Lewis , David Meyer , Dino Farinacci , Vince Fuller | ||
Last updated | 2015-10-14 | ||
Replaces | draft-lewis-lisp-interworking | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6832 (Experimental) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jari Arkko | ||
IESG note | Terry Manderson <terry.manderson@icann.org> is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) D. Lewis Request for Comments: 6832 D. Meyer Category: Experimental D. Farinacci ISSN: 2070-1721 Cisco Systems V. Fuller January 2013 Interworking between Locator/ID Separation Protocol (LISP) and Non-LISP Sites Abstract This document describes techniques for allowing sites running the Locator/ID Separation Protocol (LISP) to interoperate with Internet sites that may be using either IPv4, IPv6, or both but that are not running LISP. A fundamental property of LISP-speaking sites is that they use Endpoint Identifiers (EIDs), rather than traditional IP addresses, in the source and destination fields of all traffic they emit or receive. While EIDs are syntactically identical to IPv4 or IPv6 addresses, normally routes to them are not carried in the global routing system, so an interoperability mechanism is needed for non- LISP-speaking sites to exchange traffic with LISP-speaking sites. This document introduces three such mechanisms. The first uses a new network element, the LISP Proxy Ingress Tunnel Router (Proxy-ITR), to act as an intermediate LISP Ingress Tunnel Router (ITR) for non-LISP- speaking hosts. Second, this document adds Network Address Translation (NAT) functionality to LISP ITRs and LISP Egress Tunnel Routers (ETRs) to substitute routable IP addresses for non-routable EIDs. Finally, this document introduces the Proxy Egress Tunnel Router (Proxy-ETR) to handle cases where a LISP ITR cannot send packets to non-LISP sites without encapsulation. Lewis, et al. Experimental [Page 1] RFC 6832 LISP and Non-LISP Interworking January 2013 Status of This Memo This document is not an Internet Standards Track specification; it is published for examination, experimental implementation, and evaluation. This document defines an Experimental Protocol for the Internet community. 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/rfc6832. 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. Lewis, et al. Experimental [Page 2] RFC 6832 LISP and Non-LISP Interworking January 2013 Table of Contents 1. Introduction ....................................................3 2. Definition of Terms .............................................5 3. LISP Interworking Models ........................................6 4. Routable EIDs ...................................................7 4.1. Impact on Routing Table ....................................7 4.2. Requirement for Sites to Use BGP ...........................7 4.3. Limiting the Impact of Routable EIDs .......................7 4.4. Use of Routable EIDs for Sites Transitioning to LISP .......7 5. Proxy Ingress Tunnel Routers ....................................8 5.1. Proxy-ITR EID Announcements ................................8 5.2. Packet Flow with Proxy-ITRs ................................9 5.3. Scaling Proxy-ITRs ........................................11 5.4. Impact of the Proxy-ITR's Placement in the Network ........11 5.5. Benefit to Networks Deploying Proxy-ITRs ..................11 6. Proxy Egress Tunnel Routers ....................................12 6.1. Packet Flow with Proxy-ETRs ...............................12 7. LISP-NAT .......................................................13 7.1. Using LISP-NAT with LISP-NR EIDs ..........................14Show full document text