Signal-Free Locator/ID Separation Protocol (LISP) Multicast
RFC 8378

Document Type RFC - Experimental (May 2018; No errata)
Last updated 2018-05-02
Replaces draft-farinacci-lisp-signal-free-multicast
Stream IETF
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Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Luigi Iannone
Shepherd write-up Show (last changed 2017-12-15)
IESG IESG state RFC 8378 (Experimental)
Consensus Boilerplate Yes
Telechat date
Responsible AD Deborah Brungard
Send notices to ggx@gigix.net
IANA IANA review state IANA OK - No Actions Needed
IANA action state No IC
Internet Engineering Task Force (IETF)                         V. Moreno
Request for Comments: 8378                                 Cisco Systems
Category: Experimental                                      D. Farinacci
ISSN: 2070-1721                                              lispers.net
                                                                May 2018

      Signal-Free Locator/ID Separation Protocol (LISP) Multicast

Abstract

   When multicast sources and receivers are active at Locator/ID
   Separation Protocol (LISP) sites, the core network is required to use
   native multicast so packets can be delivered from sources to group
   members.  When multicast is not available to connect the multicast
   sites together, a signal-free mechanism can be used to allow traffic
   to flow between sites.  The mechanism described in this document uses
   unicast replication and encapsulation over the core network for the
   data plane and uses the LISP mapping database system so encapsulators
   at the source LISP multicast site can find decapsulators at the
   receiver LISP multicast sites.

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 candidates for any level of
   Internet Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8378.

Moreno & Farinacci            Experimental                      [Page 1]
RFC 8378               Signal-Free LISP Multicast               May 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
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Definition of Terms . . . . . . . . . . . . . . . . . . . . .   4
   3.  Requirements Language . . . . . . . . . . . . . . . . . . . .   5
   4.  Reference Model . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  General Procedures  . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  General Receiver-Site Procedures  . . . . . . . . . . . .   8
       5.1.1.  Multicast Receiver Detection  . . . . . . . . . . . .   8
       5.1.2.  Receiver-Site Registration  . . . . . . . . . . . . .   9
       5.1.3.  Consolidation of the Replication List . . . . . . . .  10
     5.2.  General Source-Site Procedures  . . . . . . . . . . . . .  10
       5.2.1.  Multicast Tree Building at the Source Site  . . . . .  10
       5.2.2.  Multicast Destination Resolution  . . . . . . . . . .  11
     5.3.  General LISP Notification Procedures  . . . . . . . . . .  11
   6.  Source-Specific Multicast Trees . . . . . . . . . . . . . . .  12
     6.1.  Source Directly Connected to Source-ITRs  . . . . . . . .  12
     6.2.  Source Not Directly Connected to Source-ITRs  . . . . . .  12
   7.  Multihoming Considerations  . . . . . . . . . . . . . . . . .  13
     7.1.  Multiple ITRs at a Source Site  . . . . . . . . . . . . .  13
     7.2.  Multiple ETRs at a Receiver Site  . . . . . . . . . . . .  13
     7.3.  Multiple RLOCs for an ETR at a Receiver Site  . . . . . .  14
     7.4.  Multicast RLOCs for an ETR at a Receiver Site . . . . . .  14
   8.  PIM Any-Source Multicast Trees  . . . . . . . . . . . . . . .  15
   9.  Signal-Free Multicast for Replication Engineering . . . . . .  16
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  18
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  19
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     12.2.  Informative References . . . . . . . . . . . . . . . . .  20
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  21
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  21

Moreno & Farinacci            Experimental                      [Page 2]
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