<?xml version='1.0'?>

<reference anchor='RFC2491'>

<front>
<title abbrev='IPv6 over NBMA networks'>IPv6 over Non-Broadcast Multiple Access (NBMA) networks</title>
<author initials='G.' surname='Armitage' fullname='Grenville Armitage'>
<organization>Bell Laboratories, Lucent Technologies</organization>
<address>
<postal>
<street>101 Crawfords Corner Road</street>
<street>Holmdel</street>
<street>NJ 07733</street>
<country>USA</country></postal>
<email>gja@lucent.com</email></address></author>
<author initials='P.' surname='Schulter' fullname='Peter Schulter'>
<organization>Bright Tiger Technologies</organization>
<address>
<postal>
<street>125 Nagog Park</street>
<street>Acton</street>
<street>MA 01720</street></postal>
<email>paschulter@acm.org</email></address></author>
<author initials='M.' surname='Jork' fullname='Markus Jork'>
<organization>European Applied Research Center</organization>
<address>
<postal>
<street>Digital Equipment GmbH</street>
<street>CEC Karlsruhe</street>
<street>Vincenz-Priessnitz-Str. 1</street>
<street>D-76131 Karlsruhe</street>
<country>Germany</country></postal>
<email>jork@kar.dec.com</email></address></author>
<author initials='G.' surname='Harter' fullname='Geraldine Harter'>
<organization>Digital UNIX Networking</organization>
<address>
<postal>
<street>Compaq Computer Corporation</street>
<street>110 Spit Brook Road</street>
<street>Nashua</street>
<street>NH 03062</street></postal>
<email>harter@zk3.dec.com</email></address></author>
<date month='January' year='1999' />
<area>Internet</area>
<keyword>broadcast</keyword>
<keyword>frame relay</keyword>
<keyword>internet protocol version 6</keyword>
<keyword>non-broadcast multiple access</keyword>
<keyword>point-to-point protocol</keyword>
<abstract>
<t>
   This document describes a general architecture for IPv6 over NBMA
   networks. It forms the basis for subsidiary companion documents that
   describe details for various specific NBMA technologies (such as ATM
   or Frame Relay). The IPv6 over NBMA architecture allows conventional
   host-side operation of the IPv6 Neighbor Discovery protocol, while
   also supporting the establishment of &apos;shortcut&apos; NBMA forwarding paths
   when dynamically signaled NBMA links are available. Operations over
   administratively configured Point to Point NBMA links are also
   described.
</t>
<t>
   Dynamic NBMA shortcuts are achieved through the use of IPv6 Neighbor
   Discovery protocol operation within Logical Links, and inter-router
   NHRP for the discovery of off-Link NBMA destinations. Both flow-
   triggered and explicitly source-triggered shortcuts are supported.
</t></abstract></front>

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