Network Working Group F. Coras
Internet-Draft A. Cabellos-Aparicio
Intended status: Informational J. Domingo-Pascual
Expires: August 29, 2013 Technical University of
Catalonia
F. Maino
D. Farinacci
cisco Systems
February 25, 2013
LISP Replication Engineering
draft-coras-lisp-re-02
Abstract
This document describes a method to build and optimize inter-domain
LISP router distribution trees for locator-based unicast and
multicast replication of EID-based multicast packets.
Status of this Memo
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Coras, et al. Expires August 29, 2013 [Page 1]
Internet-Draft LISP-RE February 2013
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Definition of Terms . . . . . . . . . . . . . . . . . . . . . 4
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Overlay Distribution Tree . . . . . . . . . . . . . . . . . . 5
4.1. Overlay Management Considerations . . . . . . . . . . . . 6
5. Automated Computation of RTR Level . . . . . . . . . . . . . . 7
5.1. Algorithm for Computing Optimized Distribution Trees . . . 8
6. Security Considerations . . . . . . . . . . . . . . . . . . . 9
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 9
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9.1. Normative References . . . . . . . . . . . . . . . . . . . 10
9.2. Informative References . . . . . . . . . . . . . . . . . . 10
Appendix A. MADDBST heuristic . . . . . . . . . . . . . . . . . . 11
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12
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1. Introduction
The Locator/Identifier Separation Protocol (LISP) [RFC6830] provides
the mechanisms for the separation of Location and Identity semantics
presently overloaded by IP addresses. The split results in the
creation of two namespaces that unambigously identify edge-site
network objects, Endpoint IDs (EIDs), and core routing objects,
Routing LOCators (RLOCs). Apart from aiding the scalablity of the
core routing infrastructure, the decoupling also enables the
(re)implementation of new or existing inter-domain routing
mechanisms.
One such mechanism is inter-domain IP source-specific multicast (SSM)
[RFC4607]. In this sense, [RFC6831] defines the procedures carried
out for delivering multicast packets from a source host in a LISP
site to receivers residing in the same domain or in other LISP or
non-LISP sites when an underlying multicast infrastructure exists.
The signaling protocol it specifies for conveying (S-EID,G) state and
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