LISP Explicit Locator Path (ELP) Probing
draft-filyurin-lisp-elp-probing-01

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Last updated 2018-05-14
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Internet Engineering Task Force                              Y. Filyurin
Internet-Draft                                                 R. Raszuk
Intended status: Experimental                               Bloomberg LP
Expires: November 15, 2018                                      T. Boyes
                                                                     MLB
                                                            D. Farinacci
                                                             lispers.net
                                                            May 14, 2018

                LISP Explicit Locator Path (ELP) Probing
                   draft-filyurin-lisp-elp-probing-01

Abstract

   This document describes a LISP-TE mechanism to probe an Explicit
   Locator Path (ELP) for reachability and telemetry data.  The
   mechanism is called ELP-Probing.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on November 15, 2018.

Copyright Notice

   Copyright (c) 2018 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
   (https://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

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Requirements Language . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Definition of Terms . . . . . . . . . . . . . . . . . . . . .   3
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  RLOC-Probing  . . . . . . . . . . . . . . . . . . . . . . . .   5
   6.  ELP-Probing . . . . . . . . . . . . . . . . . . . . . . . . .   5
   7.  Data-Plane Operation  . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Appendix A.  Acknowledgments  . . . . . . . . . . . . . . . . . .  11
   Appendix B.  Document Change Log  . . . . . . . . . . . . . . . .  11
     B.1.  Changes to draft-filyurin-lisp-elp-probing-01.txt . . . .  11
     B.2.  Changes to draft-filyurin-lisp-elp-probing-00.txt . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

2.  Introduction

   This document describes traffic engineering features of the Locator/
   Identifier Separation Protocol (LISP), which provides a set of
   functions for routers to exchange information used to map from non
   globally routable Endpoint Identifiers (EIDs) to routable Routing
   Locators (RLOCs).  The LISP protocol also defines a mechanism for
   LISP routers to encapsulate IP packets addressed with EIDs for
   transmission across the Internet that uses RLOCs for routing and
   forwarding.

   When LISP routers encapsulate packets to other LISP routers, the path
   stretch is typically 1, meaning the packet travels on a direct path
   from the encapsulating ITR to the decapsulating ETR at the
   destination site.  The direct underlay path is determined by the
   underlying routing protocol and metrics it uses to find the shortest
   path.

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   This specification will examine how reencapsulating tunnels [RFC6830]
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