Support for adjustable maximum router lifetimes per-link
draft-ietf-6man-maxra-03

Document Type Active Internet-Draft (6man WG)
Last updated 2017-09-27 (latest revision 2017-07-03)
Replaces draft-krishnan-6man-maxra
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Robert Hinden
Shepherd write-up Show (last changed 2017-07-24)
IESG IESG state IESG Evaluation
Consensus Boilerplate Yes
Telechat date On agenda of 2017-11-30 IESG telechat
Has a DISCUSS. Needs one more YES or NO OBJECTION position to pass.
Responsible AD Terry Manderson
Send notices to bob.hinden@gmail.com, otroan@employees.org
IANA IANA review state IANA OK - No Actions Needed
IANA action state None
IPv6 Maintenance                                             S. Krishnan
Internet-Draft                                                    Kaloom
Updates: 4861 (if approved)                                  J. Korhonen
Intended status: Standards Track                                Broadcom
Expires: January 4, 2018                                  S. Chakrabarti
                                                                Ericsson
                                                             E. Nordmark
                                                         Arista Networks
                                                          A. Yourtchenko
                                                                   cisco
                                                            July 3, 2017

        Support for adjustable maximum router lifetimes per-link
                        draft-ietf-6man-maxra-03

Abstract

   The neighbor discovery protocol specifies the maximum time allowed
   between sending unsolicited multicast Router Advertisements from a
   router interface as well as the maximum router lifetime.  It also
   allows the limits to be overridden by link-layer specific documents.
   This document allows for overriding these values on a per-link basis.

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
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   This Internet-Draft will expire on January 4, 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

Krishnan, et al.         Expires January 4, 2018                [Page 1]
Internet-Draft         Adjustable Router Lifetimes             July 2017

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   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Relationship between AdvDefaultLifetime and MaxRtrAdvInterval   3
   4.  Updates to RFC4861  . . . . . . . . . . . . . . . . . . . . .   4
   5.  Host Behavior . . . . . . . . . . . . . . . . . . . . . . . .   4
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   4
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   4
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   IPv6 Neighbor Discovery relies on IP multicast with the expectation
   to be efficient with respect to available bandwidth and to avoid
   generating interrupts in the network nodes.  On some datalink layers
   multicast may not be natively supported.  On such links any possible
   reduction of multicast traffic will be highly beneficial.
   Unfortunately, due to the fixed protocol constants specified in
   [RFC4861] it is difficult to relax the multicast timers for neighbor
   discovery.  There are already link technology specific clarifications
   how to tune protocol constants for certain system with the
   expectation to reduce excess Neighbor Discovery Protocol (NDP)
   traffic. 3GPP cellular links are one existing example
   [RFC6459][RFC7066].

   This document specifies updates to the IPv6 Neighbor Discovery
   Protocol [RFC4861] for relaxing the the maximum time allowed between
   sending unsolicited multicast Router Advertisements (RA) from a
   router interface as well as for the maximum router lifetime.

2.  Terminology
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