PIM Join Attributes for Locator/ID Separation Protocol (LISP) Environments
RFC 8059
Internet Engineering Task Force (IETF) J. Arango
Request for Comments: 8059 S. Venaas
Category: Experimental Cisco Systems
ISSN: 2070-1721 I. Kouvelas
Arista Networks Inc.
D. Farinacci
lispers.net
January 2017
PIM Join Attributes
for Locator/ID Separation Protocol (LISP) Environments
Abstract
This document defines two PIM Join/Prune attributes that support the
construction of multicast distribution trees where the root and
receivers are located in different Locator/ID Separation Protocol
(LISP) sites. These attributes allow the receiver site to select
between unicast and multicast underlying transport and to convey the
RLOC (Routing Locator) address of the receiver ETR (Egress Tunnel
Router) to the control plane of the root ITR (Ingress Tunnel Router).
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 7841.
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/rfc8059.
Arango, et al. Experimental [Page 1]
RFC 8059 PIM Join Attributes for LISP Environments January 2017
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Requirements Notation . . . . . . . . . . . . . . . . . . . . 3
3. PIM Join/Prune Attributes . . . . . . . . . . . . . . . . . . 3
4. The Transport Attribute . . . . . . . . . . . . . . . . . . . 4
4.1. Transport Attribute Format . . . . . . . . . . . . . . . 4
4.2. Using the Transport Attribute . . . . . . . . . . . . . . 5
5. Receiver ETR RLOC Attribute . . . . . . . . . . . . . . . . . 5
5.1. Receiver RLOC Attribute Format . . . . . . . . . . . . . 6
5.2. Using the Receiver RLOC Attribute . . . . . . . . . . . . 6
6. Security Considerations . . . . . . . . . . . . . . . . . . . 7
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
8.1. Normative References . . . . . . . . . . . . . . . . . . 8
8.2. Informative References . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
The construction of multicast distribution trees where the root and
receivers are located in different LISP sites [RFC6830] is defined in
[RFC6831]. Creation of (root-EID,G) state in the root site requires
that unicast LISP-encapsulated Join/Prune messages be sent from an
ETR on the receiver site to an ITR on the root site. The term "EID"
is short for "Endpoint ID".
[RFC6831] specifies that (root-EID,G) data packets are to be LISP-
encapsulated into (root-RLOC,G) multicast packets. However, a wide
deployment of multicast connectivity between LISP sites is unlikely
to happen any time soon. In fact, some implementations are initially
focusing on unicast transport with head-end replication between root
and receiver sites.
Arango, et al. Experimental [Page 2]
RFC 8059 PIM Join Attributes for LISP Environments January 2017
The unicast LISP-encapsulated Join/Prune message specifies the
(root-EID,G) state that needs to be established in the root site, but
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