IPv6 Router Advertisement Option for Network Boot
draft-qin-6man-nb-option-02

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Last updated 2018-09-06
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Network Working Group                                        C. Qin, Ed.
Internet-Draft                                                     Y. Xi
Intended status: Standards Track                                   W. Xu
Expires: March 10, 2019                                      Alibaba-Inc
                                                       September 6, 2018

           IPv6 Router Advertisement Option for Network Boot
                      draft-qin-6man-nb-option-02

Abstract

   This document specifies an IPv6 Router Advertisement (RA) option
   (called "Boot File URL option") to allow IPv6 routers to advertise
   configuration information for booting a node from the network.

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 March 10, 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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  Option  . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Boot File Uniform Resource Locator (URL) Option . . . . .   3
   3.  Implementation Considerations . . . . . . . . . . . . . . . .   4
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   This document describes an IPv6 Neighbor Discovery (ND) option
   (called BFURL option) that can be used to provide configuration
   information for nodes to be booted from network instead of local
   media.

   IPv6 Stateless Address Autoconfiguration (SLAAC) [RFC4862] and IPv6
   Neighbor Discovery (ND) [RFC4861] define ways to configure IPv6
   addresses, on-link prefix list, default routers and other parameters.

   The existing ND message (RA) is used to carry this network boot
   information.  Nodes can get the boot file url and parameters through
   RA messages via BFRUL option.  A boot file can be a boot-loader
   program or a minimal OS kernel.  The node firmware needs to download
   the boot file and execute it.

   This approach is useful in networks with no DHCPv6 infrastructure.
   The intention is to simplify the implementation of first-stage
   communicating functionalities of the nodes (i.e.  PXE firmware), and
   network.  The distribution of additional information and subsequent
   communications between the node and network side (e.g., an install
   server) should be handled by applications built in the boot file.

   The configuration of a Boot-File-URL would be required onto routers
   sending RA messages.  The configuration mechanism (manual or
   automatic) is out of scope of this document.

1.1.  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 RFC 2119 [RFC2119].

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2.  Option

   The option formats comply with ND options per [RFC4861].

2.1.  Boot File Uniform Resource Locator (URL) Option
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