Network Working Group C. Qin, Ed. Internet-Draft Y. Xi Intended status: Standards Track W. Xu Expires: December 16, 2018 Alibaba-Inc June 14, 2018 IPv6 Router Advertisement Option for Network Boot draft-qin-6man-nb-option-00 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 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 December 16, 2018. 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 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. Qin, et al. Expires December 16, 2018 [Page 1] Internet-Draft RA Network Boot Option June 2018 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Requirements Language . . . . . . . . . . . . . . . . . . 3 2. Option . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1. Boot File Uniform Resource Locator (URL) Option . . . . . 3 3. Deployment Considerations . . . . . . . . . . . . . . . . . . 3 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 5. Security Considerations . . . . . . . . . . . . . . . . . . . 4 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 4 7. References . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.1. Normative References . . . . . . . . . . . . . . . . . . 4 7.2. Informative References . . . . . . . . . . . . . . . . . 4 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5 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. This approach is useful in networks with no DHCPv6 infrastructure. The intention is to simplify the implementation on both node side (i.e. PXE firmware), and network side. 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. The distribution of additional information and further 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 into routers sending RA messages. The configuration mechanism ( manual or automatic) is out of scope of this document. Qin, et al. Expires December 16, 2018 [Page 2] Internet-Draft RA Network Boot Option June 2018 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]. 2. Option The option formats comply with ND options per [RFC4861] (Section 4.6). 2.1. Boot File Uniform Resource Locator (URL) Option Routers send this option to nodes with a URL to a boot file. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | ~ Boot-File-URL (variable length) ~ | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 1 Fields description: Type TBD. Length The length of this option (including the Type and Length fields) in octets. Boot-File-URL The URL for a boot file in string. Its format Must comply with [RFC3986]. 3. Deployment Considerations TBD. 4. IANA Considerations This document requires a new ND option type to be allocated. Option Name Type Boot-File-URL TBD. Qin, et al. Expires December 16, 2018 [Page 3] Internet-Draft RA Network Boot Option June 2018 5. Security Considerations TBD. 6. Acknowledgements TBD. 7. References 7.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . [RFC3986] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform Resource Identifier (URI): Generic Syntax", STD 66, RFC 3986, DOI 10.17487/RFC3986, January 2005, . [RFC4861] Narten, T., Nordmark, E., Simpson, W., and H. Soliman, "Neighbor Discovery for IP version 6 (IPv6)", RFC 4861, DOI 10.17487/RFC4861, September 2007, . [RFC4862] Thomson, S., Narten, T., and T. Jinmei, "IPv6 Stateless Address Autoconfiguration", RFC 4862, DOI 10.17487/RFC4862, September 2007, . [UEFI23] UEFI Forum, "Unified Extensible Firmware Interface (UEFI) Specification, Version 2.7 Errata A", August 2017, . 7.2. Informative References [RFC3315] Droms, R., Ed., Bound, J., Volz, B., Lemon, T., Perkins, C., and M. Carney, "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)", RFC 3315, DOI 10.17487/RFC3315, July 2003, . [RFC4578] Johnston, M. and S. Venaas, Ed., "Dynamic Host Configuration Protocol (DHCP) Options for the Intel Preboot eXecution Environment (PXE)", RFC 4578, DOI 10.17487/RFC4578, November 2006, . Qin, et al. Expires December 16, 2018 [Page 4] Internet-Draft RA Network Boot Option June 2018 [RFC5970] Huth, T., Freimann, J., Zimmer, V., and D. Thaler, "DHCPv6 Options for Network Boot", RFC 5970, DOI 10.17487/RFC5970, September 2010, . Authors' Addresses Chao Qin (editor) Alibaba-Inc P.R.China Email: jacni@jacni.com Yongqing Xi Alibaba-Inc P.R.China Email: yongqing.xyq@alibaba-inc.com Wei Xu Alibaba-Inc P.R.China Email: arthur.xw@alibaba-inc.com Qin, et al. Expires December 16, 2018 [Page 5]