IPv6 Backbone Router
draft-ietf-6lo-backbone-router-09
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6lo P. Thubert, Ed.
Internet-Draft Cisco Systems
Updates: 4861, 8505 (if approved) C. Perkins
Intended status: Standards Track Futurewei
Expires: June 8, 2019 E. Levy-Abegnoli
Cisco Systems
December 5, 2018
IPv6 Backbone Router
draft-ietf-6lo-backbone-router-09
Abstract
Backbone Routers are RFC8505 Routing Registrars that provide proxy
services for IPv6 Neighbor Discovery. Backbone Routers federate
multiple wireless Links over a Backbone Link to form a MultiLink
Subnet. Backbone Routers placed along the wireless edge of the
Backbone handle IPv6 Neighbor Discovery, and route packets on behalf
of registered nodes.
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on June 8, 2019.
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
Thubert, et al. Expires June 8, 2019 [Page 1]
Internet-Draft IPv6 Backbone Router December 2018
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 . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. BCP 14 . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2. References . . . . . . . . . . . . . . . . . . . . . . . 5
2.3. New Terms . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4. Acronym Definitions . . . . . . . . . . . . . . . . . . . 6
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Access Link . . . . . . . . . . . . . . . . . . . . . . . 9
3.2. Route-Over Mesh . . . . . . . . . . . . . . . . . . . . . 10
3.3. MultiLink Subnet Consistency . . . . . . . . . . . . . . 11
3.4. Registering Node . . . . . . . . . . . . . . . . . . . . 11
3.5. Using IPv6 ND Over the Backbone Link . . . . . . . . . . 12
3.6. Routing Proxy Operations . . . . . . . . . . . . . . . . 13
3.7. Bridging Proxy Operations . . . . . . . . . . . . . . . . 14
3.8. Leveraging Optimistic DAD . . . . . . . . . . . . . . . . 14
4. Updating RFC 4861 . . . . . . . . . . . . . . . . . . . . . . 15
5. Updating RFC 8505 . . . . . . . . . . . . . . . . . . . . . . 15
6. 6BBR detailed Operations . . . . . . . . . . . . . . . . . . 15
6.1. Primary and Secondary 6BBRs . . . . . . . . . . . . . . 16
6.2. Binding Table . . . . . . . . . . . . . . . . . . . . . . 16
6.3. Registration and Binding Table Entry Creation . . . . . . 17
6.4. Defending Addresses . . . . . . . . . . . . . . . . . . . 18
7. Security Considerations . . . . . . . . . . . . . . . . . . . 20
8. Protocol Constants . . . . . . . . . . . . . . . . . . . . . 20
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 20
10. Future Work . . . . . . . . . . . . . . . . . . . . . . . . . 20
11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 20
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 21
12.1. Normative References . . . . . . . . . . . . . . . . . . 21
12.2. Informative References . . . . . . . . . . . . . . . . . 22
12.3. External Informative References . . . . . . . . . . . . 24
Appendix A. Applicability and Requirements Served . . . . . . . 25
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 26
1. Introduction
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