LISP Predictive RLOCs
draft-ietf-lisp-predictive-rlocs-04
Network Working Group D. Farinacci
Internet-Draft lispers.net
Intended status: Experimental P. Pillay-Esnault
Expires: November 16, 2019 Huawei Technologies
May 15, 2019
LISP Predictive RLOCs
draft-ietf-lisp-predictive-rlocs-04
Abstract
This specification describes a method to achieve near-zero packet
loss when an EID is roaming quickly across RLOCs.
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 [RFC2119].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on November 16, 2019.
Copyright Notice
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definition of Terms . . . . . . . . . . . . . . . . . . . . . 3
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4. Design Details . . . . . . . . . . . . . . . . . . . . . . . 5
4.1. RLE Encoding . . . . . . . . . . . . . . . . . . . . . . 6
4.2. Packet Delivery Optimizations . . . . . . . . . . . . . . 7
4.3. Trading Off Replication Cost . . . . . . . . . . . . . . 8
5. Directional Paths with Intersections . . . . . . . . . . . . 9
6. Multicast Considerations . . . . . . . . . . . . . . . . . . 10
7. Multiple Address-Family Considerations . . . . . . . . . . . 11
8. Scaling Considerations . . . . . . . . . . . . . . . . . . . 11
9. Security Considerations . . . . . . . . . . . . . . . . . . . 12
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 12
11.1. Normative References . . . . . . . . . . . . . . . . . . 12
11.2. Informative References . . . . . . . . . . . . . . . . . 13
Appendix A. Acknowledgments . . . . . . . . . . . . . . . . . . 14
Appendix B. Document Change Log . . . . . . . . . . . . . . . . 14
B.1. Changes to draft-ietf-lisp-predictive-rlocs-04 . . . . . 14
B.2. Changes to draft-ietf-lisp-predictive-rlocs-03 . . . . . 14
B.3. Changes to draft-ietf-lisp-predictive-rlocs-02 . . . . . 14
B.4. Changes to draft-ietf-lisp-predictive-rlocs-01 . . . . . 14
B.5. Changes to draft-ietf-lisp-predictive-rlocs-00 . . . . . 14
B.6. Changes to draft-farinacci-lisp-predictive-rlocs-02 . . . 15
B.7. Changes to draft-farinacci-lisp-predictive-rlocs-01 . . . 15
B.8. Changes to draft-farinacci-lisp-predictive-rlocs-00 . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
1. Introduction
The LISP architecture [RFC6830] specifies two namespaces, End-Point
IDs (EIDs) and Routing Locators (RLOCs). An EID identifies a node in
the network and the RLOC indicates the EID's topological location.
When an node roams in the network, its EID remains fixed and
unchanged but the RLOCs associated with it change to reflect its new
topological attachment point. This specification will focus EIDs and
RLOCs residing in separate nodes. An EID is assigned to a host node
that roams while the RLOCs are assigned to network nodes that stay
stationary and are part of the network topology. For example, a set
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