IPv6 Backbone Router
draft-ietf-6lo-backbone-router-04
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Active Internet-Draft (6lo WG)
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Last updated |
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2017-07-17
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IETF
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(None)
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WG state
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WG Document
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Document shepherd |
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Samita Chakrabarti
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I-D Exists
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Send notices to |
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"Samita Chakrabarti" <samitac.ietf@gmail.com>
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6lo P. Thubert, Ed.
Internet-Draft cisco
Intended status: Standards Track July 17, 2017
Expires: January 18, 2018
IPv6 Backbone Router
draft-ietf-6lo-backbone-router-04
Abstract
This specification proposes an update to IPv6 Neighbor Discovery, to
enhance the operation of IPv6 over wireless links that exhibit lossy
multicast support, and enable a large degree of scalability by
splitting the broadcast domains. A broadcast-efficient backbone
running classical IPv6 Neighbor Discovery federates multiple wireless
links to form a large MultiLink Subnet, but the broadcast domain does
not need to extend to the wireless links for the purpose of ND
operation. Backbone Routers placed at the wireless edge of the
backbone proxy the ND operation and route packets from/to registered
nodes, and wireless nodes register or are proxy-registered to the
Backbone Router to setup proxy services in a fashion that is
essentially similar to a classical Layer-2 association.
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 http://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 January 18, 2018.
Copyright Notice
Copyright (c) 2017 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
Thubert Expires January 18, 2018 [Page 1]
Internet-Draft IPv6 Backbone Router July 2017
(http://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 . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Applicability and Requirements Served . . . . . . . . . . . . 4
3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5. Backbone Router Routing Operations . . . . . . . . . . . . . 9
5.1. Over the Backbone Link . . . . . . . . . . . . . . . . . 10
5.2. Over the LLN Link . . . . . . . . . . . . . . . . . . . . 11
6. BackBone Router Proxy Operations . . . . . . . . . . . . . . 13
6.1. Registration and Binding State Creation . . . . . . . . . 15
6.2. Defending Addresses . . . . . . . . . . . . . . . . . . . 16
7. Security Considerations . . . . . . . . . . . . . . . . . . . 18
8. Protocol Constants . . . . . . . . . . . . . . . . . . . . . 18
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 19
11.1. Normative References . . . . . . . . . . . . . . . . . . 19
11.2. Informative References . . . . . . . . . . . . . . . . . 20
11.3. External Informative References . . . . . . . . . . . . 23
Appendix A. Requirements . . . . . . . . . . . . . . . . . . . . 24
A.1. Requirements Related to Mobility . . . . . . . . . . . . 24
A.2. Requirements Related to Routing Protocols . . . . . . . . 25
A.3. Requirements Related to the Variety of Low-Power Link
types . . . . . . . . . . . . . . . . . . . . . . . . . . 26
A.4. Requirements Related to Proxy Operations . . . . . . . . 26
A.5. Requirements Related to Security . . . . . . . . . . . . 27
A.6. Requirements Related to Scalability . . . . . . . . . . . 28
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 29
1. Introduction
One of the key services provided by IEEE std. 802.1 [IEEEstd8021]
Ethernet Bridging is an efficient and reliable broadcast service, and
multiple applications and protocols have been built that heavily
depends on that feature for their core operation. But a wide range
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